Academic literature on the topic 'Sediment remediation'

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Journal articles on the topic "Sediment remediation"

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Zhang, Min, Xiangchun Wang, Long Yang, and Yangyang Chu. "Research on Progress in Combined Remediation Technologies of Heavy Metal Polluted Sediment." International Journal of Environmental Research and Public Health 16, no. 24 (December 13, 2019): 5098. http://dx.doi.org/10.3390/ijerph16245098.

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Heavy metals contaminated sediment has become a worldwide environmental issue due to its great harm to human and aquatic organisms. Thus, economical, effective, and environmentally-friendly remediation technologies are urgently needed. Among which, combined remediation technologies have attracted widespread attention for their unique advantages. This paper introduces combined remediation technologies based on physical-, chemical-, and bio-remediation of heavy metal polluted sediments. Firstly, the research progress in physical-chemical, bio-chemical, and inter-organismal (including plants, animals, microorganisms) remediation of heavy metal polluted sediments are summarized. Additionally, the paper analyzes the problems of the process of combined remediation of heavy metals in river sediments and outlooks the future development trends of remediation technologies. Overall, this review provides useful technology references for the control and treatment of heavy metal pollution in river sediments.
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Praeger, Thomas H., Stuart D. Messur, and Richard P. DiFiore. "Remediation of PCB-containing sediments using surface water diversion “dry excavation”: a case study." Water Science and Technology 33, no. 6 (March 1, 1996): 239–45. http://dx.doi.org/10.2166/wst.1996.0102.

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Remediation of contaminated sediments presents an on-going challenge in the efforts toward improved water quality and environmental restoration. Faced with this challenge, Mercury Marine recently selected a remedial alternative that included diverting creek flow and removing approximately 5,900 in-situ cubic meters of sediments containing PCBs from an impoundment in Cedar Creek. The regulatory objective was to remove all sediment containing PCBs “to the extent practicable” from an 180-meter stretch of the impoundment. A remedial investigation was conducted to collect the data necessary to characterize the site and prepare a remedial design. Technical issues involved with dry excavation that were critical to implementing this alternative included: channel diversion, sediment characterization, pond dewatering, wastewater treatment, groundwater infiltration, surface water run-off, and sediment removal, handling and disposal. Mercury Marine and its engineering staff found sediment removal by dry excavation to be a labor intensive and costly means of remediating the PCB-affected sediments at this site. Before implementing dry excavation at any site, owners, consultants, and regulatory agencies must realize the many limitations of this alternative and give special consideration to site conditions, engineering, and planning.
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Chao, Lei, Xiaoyun Mo, Jia Meng, and Yafeng Li. "Study on enhanced bioremediation effect of oil-bearing dredging sediment." E3S Web of Conferences 252 (2021): 02031. http://dx.doi.org/10.1051/e3sconf/202125202031.

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To solve the problem of difficult treatment of oil-bearing dredging sediment, the effects of three methods of microbial remediation, phytoremediation and combined bioremediation on the treatment of oily river dredging sediments were compared and studied, and the influence factors of microbial remediation were explored through static bacteria-fling tests. The results showed that the combined remediation method was better than the single biological method in treating bottom mud. The oil content of the treated sediment was 1.21g/kg, and the removal rate was 95.31%; the organic matter of the treated sediment was 72.30g/kg, and the degradation rate was 37.33. %, which can meet the requirements in the “Control Standards of Pollutants in Sludge for Agricultural Use (GB4284–2018)” and can be used for agricultural purposes.
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Zhang, Jian, Yun Tang, Zhanguo Kou, Xiao Teng, Wei Cai, and Jian Hu. "Shift of Sediments Bacterial Community in the Black-Odor Urban River during In Situ Remediation by Comprehensive Measures." Water 11, no. 10 (October 14, 2019): 2129. http://dx.doi.org/10.3390/w11102129.

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The phenomenon of black-odor urban rivers with rapid urbanization has attracted extensive attention. In this study, we investigated the water quality and composition of sediment-associated bacteria communities in three remediation stages (before remediation, 30 days after remediation, and 90 days after remediation) based on the in situ remediation using comprehensive measures (physical, chemical, and biological measures). The results show that the overlying water quality was notably improved after in situ remediation, while the diversity and richness of sediment-associated bacterial communities decreased. A growing trend of some dominant genus was observed following the remediation of a black-odor river, such as Halomonas, Pseudomonas, Decarbonamis, Leptolina, Longilina, Caldiseericum, Smithella, Mesotoga, Truepera, and Ralstonia, which play an important role in the removal of nitrogen, organic pollutants and hydrogen sulfide (H2S) during the sediment remediation. Redundancy analysis (RDA) showed that the bacterial community succession may accelerate the transformation of organic pollutants into inorganic salts in the sediment after in situ remediation. In a word, the water quality of the black-odor river was obviously improved after in situ remediation, and the bacterial community in the sediment notably changed, which determines the nutrients environment in the sediment.
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Mench, Michel, Jaco Vangronsveld, and Nick Lepp. "Soil and sediment remediation [SSR]." Environmental Pollution 144, no. 1 (November 2006): 1. http://dx.doi.org/10.1016/j.envpol.2006.01.025.

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Huang, Jian Jun, Yu Hong Li, and Ya Jie Gao. "Ferric Nitrate Suppresses Internal Phosphorus Loading in Municipal River." Advanced Materials Research 393-395 (November 2011): 1242–46. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.1242.

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The application of nitrate is an accepted procedure to manage eutrophication municipal rivers by controlling the phosphorus release from sediments into overlying water and offering electron acceptor for microorganism metabolism. In situ laboratory studies were carried out in simulated reactors to evaluate the potential of ferric nitrate for remediation municipal river sediment. Ferric nitrate could greatly improve the ability of bio-treatment properties for sediment. Two dose remediation experiment of ferric nitrate (70g and 35g per square meter) was carried out lasting 28 weeks. Observations showed that ferric nitrate could suppressed the release of phosphorus from the sediments. At the same time the TN concentration could reduce to common level compared to blank reactor by denitrification. As a whole the dose of 35g per square meter ferric nitrate is better. The results suggest that knowledge of a municipal river’s nitrogen budget may be a useful tool in the design of municipal river remediation efforts.
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Lintern, Anna, Marion Anderson, Paul Leahy, Ana Deletic, and David McCarthy. "Using sediment cores to establish targets for the remediation of aquatic environments." Water Science and Technology 73, no. 3 (October 19, 2015): 628–35. http://dx.doi.org/10.2166/wst.2015.525.

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When assigning site-specific restoration targets for deteriorating aquatic systems, it is necessary to have an understanding of the undisturbed or background state of the system. However, the site-specific characteristics of aquatic systems prior to disturbance are mostly unknown, due to the lack of historical water and sediment quality data. This study aims to introduce a method for filling this gap in our understanding, using dated sediment cores from the beds of aquatic environments. We used Bolin Billabong, a floodplain lake of the Yarra River (South-East Australia), as a case study to demonstrate the application of this method. We identified the concentrations of aluminium, cadmium, chromium, copper, iron, lead, manganese, nickel, tin and zinc at 8 cm intervals through the sediment core. This showed that aluminium, chromium, copper, iron, lead, nickel, tin and zinc concentrations in Bolin Billabong sediments significantly increased after European settlement in the river catchment in the mid-19th century. The differences between current Australian sediment quality guidelines trigger values and the background metal concentrations in Bolin Billabong sediments underscore the value of using locally relevant background toxicant concentrations when setting water and sediment quality targets.
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Forstner, U. "Risk assessment and technological options for contaminated sediments — a geochemical perspective." Marine and Freshwater Research 46, no. 1 (1995): 113. http://dx.doi.org/10.1071/mf9950113.

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The effective long-term remediation of contaminated sediments presents a particular challenge, since the large volume and the often diverse range of contaminants in these materials makes many of the traditional remediation techniques uneconomic. Future risk assessments of contaminated sediments should focus on assessing possible chemical changes in the stored sediment (e.g. redox changes and acid production) that could lead in the long term to contaminant remobilization. New biological criteria of contaminated sediments are also needed. These risk assessments must be undertaken with the potential remediation methods in mind. Priority needs to be given to the application of new geochemical engineering techniques, including chemical stabilization by additives and storage under permanent anoxic conditions, that optimize the long-term chemical stability of contaminated sediments.
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Rajic, Ljiljana, Bozo Dalmacija, Svetlana Ugarcina-Perovic, Malcolm Watson, and Milena Dalmacija. "Influence of nickel speciation on electrokinetic sediment remediation efficiency." Chemical Industry and Chemical Engineering Quarterly 17, no. 4 (2011): 451–58. http://dx.doi.org/10.2298/ciceq110216030r.

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This article presents a bench-scale investigation of nickel removal during electrokinetic (EK) remediation of sediment, and the dependency of removal efficacies upon the speciation of the metal, as influenced by the duration of the nickel-sediment interaction. The sediment used in this study was from the Grand Backa canal (Vojvodina, Republic of Serbia). The sediment used is anaerobic and the nickel pollution has been aged for several years, so it is mostly sorbed by sulphides and organic mater (57%). In EXP I, conventional EK remediation was conducted on this sediment for 7 days, but was ineffective (0% removal). EXP II investigated the influence of the duration of nickel sorption onto the sediment, by contaminating the sediment with additional nickel. In this sediment, nickel appeared mainly in the most mobile, acid-soluble fraction, and was thus available for migration towards the cathode. Consequently, conventional EK remediation of this sediment resulted in significantly better nickel removal (23%) than EXP I. During EXP III, the same spiked sediment was investigated using an increased applied current density, with no significant increase in removal efficacy. This study demonstrates that metal-sediment interaction duration affects efficacy of metal removal during EK remediation.
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Zarull, M. A., and T. B. Reynoldson. "A Management Strategy for Contaminated Sediment: Assessment and Remediation." Water Quality Research Journal 27, no. 4 (November 1, 1992): 871–82. http://dx.doi.org/10.2166/wqrj.1992.052.

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Abstract Sediment contaminated with metals, persistent toxic organics and nutrients represents a significant concern throughout the Great Lakes. The highest levels of sediment-associated contaminants and some of the worst manifestations of their resultant problems are found in the urban-industrial harbours, embayments and river mouths. These “Areas of Concern” require complete problem definition and remediation of all impaired uses. However, our ability to fully remediate contaminated sediments in these nearshore areas is limited by the availability of proven technology, adequate assessment data and suitable restoration goals. All of these requirements are currently in the research, development and demonstration phases. Each of these is discussed in the context of their technical problems and further research needs and development directions are indicated.
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Dissertations / Theses on the topic "Sediment remediation"

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Shao, Mingfei. "Autotrophic denitrification in nitrate-induced marine sediment remediation." Click to view the E-thesis via HKUTO, 2009. http://sunzi.lib.hku.hk/hkuto/record/B44139226.

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Xu, Jing. "Laboratory scale electrochemical remediation of phenanthrene in sediment." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.497444.

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As a consequence of the link of polycyclic aromatic hydrocarbons (PAHs) to adverse health effects in the human population, efforts should be made to reduce or even eliminate them wherever possible. The limited pore water and contaminant movement in tight soils poses problems for traditional soil cleansing processes, which makes remediation of sediments contaminated with persistent PAH one of the more intractable environmental problems. Iimovative, new techniques are required for cleaning up PAHs contaminated sediment. In recent years, the application of electrochemistry to environmental pollution treatment has been thoroughly investigated and electrochemical remediation is shown to be more suitable to the removal of organic pollutants from low-permeability soils and sediments, but problems with removing PAHs still exist because of their low aqueous solubility and high preferential sorption to soils and sediment. The promising results from the complete destruction of PAHs from wastewater permit to consideration of the electrochemical technology as an alternative to PAH contaminated sediment.
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Shao, Mingfei, and 邵明非. "Autotrophic denitrification in nitrate-induced marine sediment remediation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2009. http://hub.hku.hk/bib/B44139226.

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He, Ziqi. "Sonochemical remediation of Mercury from contaminated sediments." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1155666284.

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Para, Eric George. "Coastal Sediment and Fish Biosolids Remediation Using a Microbial Fuel Cell." Fogler Library, University of Maine, 2006. http://www.library.umaine.edu/theses/pdf/ParaEG2006.pdf.

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Foltz, John Richard. "Impacts of contaminated sediment remediation on early life stages of rainbow trout." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Thesis/Fall2009/J_Foltz_113009.pdf.

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Thesis (M.S. in engineering)--Washington State University, December 2009.
Title from PDF title page (viewed on Feb. 4, 2010). "College of Engineering and Architecture." Includes bibliographical references (p. 50-55).
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Acharya, Lok. "Chemical and physical characteristics of Mahoning River sediment before and after fungal bioremediation /." Connect to resource online, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1211558693.

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Dejan, Krčmar. "Uticaj promene fizičko-hemijskih uslova i odabranih tretmana na mobilnost metala u sistemu sediment/voda." Phd thesis, Univerzitet u Novom Sadu, Prirodno-matematički fakultet u Novom Sadu, 2010. http://dx.doi.org/10.2298/NS20101008KRCMAR.

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U radu je ispitana distribucija metala u sistemu sediment/voda na najugroženijim vodotocima uAP Vojvodini. Na osnovu dobivenih podataka urađena je procena rizika na osnovu analizeporne vode, kiselog volatilnog sulfida i simultano ekstrahovanih metala i sekvencijalneekstrakcione procedure. Procena mobilnosti metala u sistemu sediment/voda određena jepromenom fizičko-hemijskih uslova u realnom sistemu (vodotok) i u laboratorijskim uslovima.Ispitana je efikasnost in-situ (aeracijom sistema sediment/voda) i ex-situ remedijacijesedimenta metodama termičkog tretmana i solidifikacije/stabilizacije.Rezultati su ukazali da u svakom vodotoku i zaštićenoj zoni postoji lokacija u kojoj je sedimentbarem po jednom metalu klasifikovan (holandski sistem klasifikacije sedimenata) kao zagađen(klasa 3) ili izuzetno zagađen sediment (klasa 4). Generalno, kvalitet sedimenta manjihvodotoka (Krivaja, Nadela, Kudoš, Veliki Bački kanal i Begej) je lošiji u odnosu na ostaleispitivane vodotoke.Procena dostupnosti metala u sedimentu Velikog Bačkog kanala ukazala je da na svakomispitivanom profilu postoji minimum jedan metal i jedna metoda koja definiše sediment kaovisoko rizičan. Takođe je zaključeno da je sediment na delu od 2+000 do 4+900 km zagađeniji,jer postoji veći broj metala i metoda koji ga definišu kao visoko rizičnim. Ovako dobijenirezultati ukazuju da nije dovoljan jednostavan i samo jedan pristup u oceni kvaliteta sedimentai proceni rizika koji metali mogu da ispolje u akvatičnom ekosistemu.Ukazano je da pomeranje sedimenta (npr. otvaranja ustave), dovodi do promene fizičkohemijskihuslova u sistemu sediment/voda, resuspenzije i transporta sedimenta. Usled ovihpromena povećava se dostupnost metala i dolazi do povećanja njihove koncentracije u vodenojfazi čime se znatno povećava rizik i mogućnost ispoljavanja negativnih efekata na akvatičniekosistem.U slučaju resuspenzije sedimenta u sistemu sediment/voda pronađena je zavisnost izmeđukoncentracije metala u suspendovanim materijama i vodi od sadržaja određenih frakcija ususpendovanim materijama (sadržaj organskih materija i frakcije do 63 μm).Remedijacione tehnike često su ekonomski neprihvatljive zbog velike zapremine zagađenogsedimenta. Ukazano je da primena in-situ aeracije, omogućava smanjenje količine sedimenta(čime se smanjuju troškovi eventualno naknadnog tretmana sedimenta), a da je tretmansolidifikacije/stabilizacije sedimenta sa glinom i termičke remedijacije zadovoljavjući saaspekta izluživanja metala. Dobijeni rezultati izvedenih testova izluživanja ukazali su namoguću primenu ovih tretmana u pogledu rešavanja problema sedimenta koji je zagađenmetalima, bilo u pogledu sigurnog odlaganja na deponiju ili u smislu njegove upotrebe kaododatka pri proizvodnji građevinskog materijala (opeke), osnove za puteve, uređenje obale(nasipa) itd. Na taj način mogu se znatno umanjiti troškovi izmuljivanja i manipulacijekontaminiranog sedimenta, a sama remedijacija učiniti mnogo prihvatljivijom
This work investigates the distribution of metals in the sediment / water systems of the most endangered rivers in Vojvodina. Utilizing the data obtained, risk assessments are carried out based on analysis of pore water, acidic volatile sulphides and simultaneously extracted metals and sequential extraction procedure. The assessment of metal mobility in the sediment / water system is determined by the changing physical and chemical conditions in real systems (waterways) and under laboratory conditions. The effectiveness of in-situ (aeration of sediment / water) and ex-situ remediation of sediment by thermal treatment methods and solidification / stabilization are investigated. The results show that in each waterbody and protected area, certain locations have sediment which for at least one metal, is classified (by the Dutch system of sediment classification ) as polluted (class 3) or highly polluted (class 4). In general, the quality of sediment in smaller rivers (Krivaja, Nadela, Kudoš, Veliki Bački canal and Begej) is inferior to the other rivers studied. Assessment of the metals availability in the sediments of the Veliki Bački canal indicates that in each profile examined, at least one metal and one method defines the sediment as very hazardous. It is also shown that the sediment at the section from 2 +000 to 4 +900 km is the most polluted, with a number of metals and methods that define it as a high risk. The results indicate that it is inadequate to have a simple singular approach to sediment quality assessment and the assessment of the risks posed by metals detected in aquatic ecosystems. This work shows that sediment movement (e.g. from opening a sluice gate) leads to changes in the physical-chemical conditions of the sediment / water system, with resuspension and sediment transport. These changes increase metals availability and increase their concentrations in the aqueous phase, significantly increasing the posed risk and the possibility of adverse effects on aquatic ecosystems. In the case of sediment resuspension in the sediment / water system, a relationship was found between the concentration of metals in suspended matter and the concentration in the water for certain fractions of suspended matter (organic matter content and the fraction up to 63 μm). Remediation techniques are often not economically viable due to the large volume of contaminated sediments involved. It is shown that the implementation of in-situ aeration reduces the amount of sediment (which reduces the costs of subsequent sediment treatment), and that solidification / stabilization treatment with clay and thermal remediation results in satisfactory remediation with respect to metals leaching. Leaching test results show the potential of these treatments to solve the problem of sediments which are contaminated with metals, either in terms of safe disposal in landfill or in terms of its use as a supplement in the production of building materials (brick), as road foundation, or for river bank reinforcement (dams), etc.. Thus, the costs of dredging and manipulating contaminated sediments can be significantly reduced, making remediation itself much more applicable.
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au, jchen1232005@yahoo com, and Juan Chen. "Sediment remediation as a technique for restoring eutrophic wetlands and controlling nuisance Chironomidae." Murdoch University, 2004. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20050817.102759.

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Eutrophication is a global problem affecting many inland and estuarine waters. Many wetlands on the Swan Coast Plain, in Western Australia, have undergone increasing nutrient enrichment since European settlement of the region in the 1850’s. Problems such as algal blooms and nuisance swarms of non-biting midges (Diptera; Chironomidae) are the consequence of nutrient enrichment in many of these wetlands. The restoration of these degraded wetlands, especially with respect to reducing nutrient enrichment, requires a range of comprehensive and effective techniques including catchment management, diversion or treatment of surface inputs and treatment of enriched sediments. Nitrogen and phosphorus, especially phosphorus, are not the only factors controlling algal biomass in water bodies, but they are the only elements that can be removed efficiently and economically. Internal P cycling from wetland sediments can initiate and sustain eutrophication and related algal blooms and nuisance midge problems even after external sources are diverted or reduced. The aim of this study was to identify an effective material to reduce sediment phosphorus release and thereby the phosphorus concentration of the water column. It was also important to determine the impact of the selected amendment material on phytoplankton and larval midge (chironomid) communities. A range of experiments at increasing scales, from bench-top, to microcosm to outdoor mesocosm experiments were designed to test three hypotheses: 1) Materials which have a high P sorption capacity, over a wide range of P solution concentrations, and low P release rate, are potentially suitable agents to reduce P in wetlands with enriched sediments by inactivating sediment P; 2) A reduction in the abundance of cyanobacteria caused by increasing the N:P ratio of an aquatic ecosystem results in a reduction in the density of nuisance species of Chironomidae. 3) Successful amendment of enriched sediments reduces P in the water column thereby reducing the total phytoplankton biomass and the related density of nuisance species of Chironomidae. The adsorption and desorption experiments were carried out under a range of pH values and P concentrations, with a number of materials including fly ash, red mud, precipitated calcium carbonate, crushed limestone and lime to determine the maximum adsorption capacity and affinity of these materials. A rang of P concentrations (0-1000 µg/L) simulated the P concentration of the water column in a range of wetlands of differing trophic status. Poor fits to the Langmuir equation occurred with both red mud and fly ash due to their high P content. A good fit occurred with lime, with a high P removal rate (90%-96%) over the same range. Fly ash and red mud were eliminated from further investigation due to the possibility that they might release phosphorus rather than absorb when P concentrations in surrounding environment were less than 300 µg/L or 200 µg/L respectively (concentrations which can occur in eutrophic systems). Among the three lime-based, redox-insensitive materials tested in the second mesocosm experiments, precipitated calcium carbonate (PCC) possessed the highest maximum adsorption capacity and lowest desorption rate under a range of pH values (6.2, 7.2 and 10) and P concentrations (0-12 000 µg/L), followed by crushed limestone and lime. The different maximum absorption capacities of the three materials appears to be mainly attributed to their particle size (surface area). Lime was chosen as the amendment material for further investigation because it was the only one of the three available in sufficient quantities within the timeframe of this study. Microcosm experiments showed that lime was effective in reducing sediment P release from intact sediment cores, and the ratio of TN:TP in the treatment cores increased over time compared to the control cores (in which TN: TP decreased slightly). In the first mesocosm experiment a significantly higher density of larval midges was found in the treatments than in the controls. The treatments were aimed to increase N:P ratio in the systems to reduce cyanobacteria and, subsequently, larval midge densities. However even though cyanobacteria were eliminated from the treatments, the nitrogen addition appeared to result in higher phytoplankton biomass overall, which fuelled an increase in larval midge densities. In the second mesocosm experiment, the addition of lime to enriched sediments resulted in a reduction in P in the water column. This reduction was accompanied by a reduction in total phytoplankton biomass, the absence of cyanobacteria, and a less abundant and more species - diverse chironomid fauna in the treatment mesocosms. Sediment P fractionation undertaken for both the microcosm and mesocosm experiments showed that most of the phosphorus adsorbed by lime was in the labile fraction (NH3Cl extractable P and NaOH extractable P). Phosphorus in the HCl extractable fraction was also found to be higher in the treatments due to the presence of inert mineral P in the lime than the formation of new hydroxyapatite from adsorbed P. The two mesocosm experiments suggested that larval midges were non-selective feeders, responding to total phytoplankton biomass, rather than the presence of cyanobacteria. Dissolved oxygen and predation also influenced larval midge densities. In summary, although lime appeared to be a useful material for reducing P release from enriched sediments under controlled laboratory conditions, the effect under field conditions was not as definitive. Further work is required to more fully determine the conditions under which sediment remediation may be used as a means of controlling sediment P release and associated high densities of larval chironomids.
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Chen, Juan. "Sediment remediation as a technique for restoring eutrophic wetlands and controlling nuisance Chironomidae." Chen, Juan (2003) Sediment remediation as a technique for restoring eutrophic wetlands and controlling nuisance Chironomidae. PhD thesis, Murdoch University, 2003. http://researchrepository.murdoch.edu.au/651/.

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Eutrophication is a global problem affecting many inland and estuarine waters. Many wetlands on the Swan Coast Plain, in Western Australia, have undergone increasing nutrient enrichment since European settlement of the region in the 1850's. Problems such as algal blooms and nuisance swarms of non-biting midges (Diptera; Chironomidae) are the consequence of nutrient enrichment in many of these wetlands. The restoration of these degraded wetlands, especially with respect to reducing nutrient enrichment, requires a range of comprehensive and effective techniques including catchment management, diversion or treatment of surface inputs and treatment of enriched sediments. Nitrogen and phosphorus, especially phosphorus, are not the only factors controlling algal biomass in water bodies, but they are the only elements that can be removed efficiently and economically. Internal P cycling from wetland sediments can initiate and sustain eutrophication and related algal blooms and nuisance midge problems even after external sources are diverted or reduced. The aim of this study was to identify an effective material to reduce sediment phosphorus release and thereby the phosphorus concentration of the water column. It was also important to determine the impact of the selected amendment material on phytoplankton and larval midge (chironomid) communities. A range of experiments at increasing scales, from bench-top, to microcosm to outdoor mesocosm experiments were designed to test three hypotheses: 1) Materials which have a high P sorption capacity, over a wide range of P solution concentrations, and low P release rate, are potentially suitable agents to reduce P in wetlands with enriched sediments by inactivating sediment P; 2) A reduction in the abundance of cyanobacteria caused by increasing the N:P ratio of an aquatic ecosystem results in a reduction in the density of nuisance species of Chironomidae. 3) Successful amendment of enriched sediments reduces P in the water column thereby reducing the total phytoplankton biomass and the related density of nuisance species of Chironomidae. The adsorption and desorption experiments were carried out under a range of pH values and P concentrations, with a number of materials including fly ash, red mud, precipitated calcium carbonate, crushed limestone and lime to determine the maximum adsorption capacity and affinity of these materials. A rang of P concentrations (0-1000 mcg/L) simulated the P concentration of the water column in a range of wetlands of differing trophic status. Poor fits to the Langmuir equation occurred with both red mud and fly ash due to their high P content. A good fit occurred with lime, with a high P removal rate (90%-96%) over the same range. Fly ash and red mud were eliminated from further investigation due to the possibility that they might release phosphorus rather than absorb when P concentrations in surrounding environment were less than 300 mcg/L or 200 mcg/L respectively (concentrations which can occur in eutrophic systems). Among the three lime-based, redox-insensitive materials tested in the second mesocosm experiments, precipitated calcium carbonate (PCC) possessed the highest maximum adsorption capacity and lowest desorption rate under a range of pH values (6.2, 7.2 and 10) and P concentrations (0-12 000 mcg/L), followed by crushed limestone and lime. The different maximum absorption capacities of the three materials appears to be mainly attributed to their particle size (surface area). Lime was chosen as the amendment material for further investigation because it was the only one of the three available in sufficient quantities within the timeframe of this study. Microcosm experiments showed that lime was effective in reducing sediment P release from intact sediment cores, and the ratio of TN:TP in the treatment cores increased over time compared to the control cores (in which TN: TP decreased slightly). In the first mesocosm experiment a significantly higher density of larval midges was found in the treatments than in the controls. The treatments were aimed to increase N:P ratio in the systems to reduce cyanobacteria and, subsequently, larval midge densities. However even though cyanobacteria were eliminated from the treatments, the nitrogen addition appeared to result in higher phytoplankton biomass overall, which fuelled an increase in larval midge densities. In the second mesocosm experiment, the addition of lime to enriched sediments resulted in a reduction in P in the water column. This reduction was accompanied by a reduction in total phytoplankton biomass, the absence of cyanobacteria, and a less abundant and more species - diverse chironomid fauna in the treatment mesocosms. Sediment P fractionation undertaken for both the microcosm and mesocosm experiments showed that most of the phosphorus adsorbed by lime was in the labile fraction (NH3Cl extractable P and NaOH extractable P). Phosphorus in the HCl extractable fraction was also found to be higher in the treatments due to the presence of inert mineral P in the lime than the formation of new hydroxyapatite from adsorbed P. The two mesocosm experiments suggested that larval midges were non-selective feeders, responding to total phytoplankton biomass, rather than the presence of cyanobacteria. Dissolved oxygen and predation also influenced larval midge densities. In summary, although lime appeared to be a useful material for reducing P release from enriched sediments under controlled laboratory conditions, the effect under field conditions was not as definitive. Further work is required to more fully determine the conditions under which sediment remediation may be used as a means of controlling sediment P release and associated high densities of larval chironomids.
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Books on the topic "Sediment remediation"

1

New York State Energy Research and Development Authority. Mobile containment and cleanup for subsurface contaminated sediment remediation: Final report. Albany, N.Y: New york State Energy Research and Development Authority, 2005.

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vila, B. Da. Technology alternatives for the remediation of PCB-contaminated soil and sediment. [Cincinnati, OH: U.S. Environmental Protection Agency, Center for Environmental Research Information], 1993.

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Zarull, Michael A. Ecological benefits of contaminated sediment remediation in the Great Lakes Basin. Windsor, Ont: International Joint Commission, 1999.

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W, Whitford K., Saylor E. S, Center for Environmental Research Information (U.S.), and United States. Environmental Protection Agency. Technology Innovation Office, eds. Technology alternatives for the remediation of PCB-contaminated soil and sediment. Washington, D.C: U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response, Technology Innovation Office, 1994.

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Dávila, B. Technology alternatives for the remediation of PCB-contaminated soil and sediment. Washington, D.C: U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response, Technology Innovation Office, 1994.

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Sullivan, Jerry. Cleaning up contaminated sediment: A citizens' guide. [Washington, D.C.?: U.S. Environmental Protection Agency, 1995.

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National Academies Press (U.S.), ed. Sediment dredging at Superfund megasites: Assessing the effectiveness. Washington, D.C: National Academies Press, 2007.

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H, Eijsackers, and Hamers Timo, eds. Integrated soil and sediment research: A basis for proper protection : selected proceedings of the first European Conference on Integrated Research for Soil and Sediment Protection and Remediation (EUROSOL). Dordrecht: Kluwer Academic, 1993.

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Massachusetts, Inc AMEC. Phase III remedial action plan: Phase IV remedy implementation plan : sediment portion of the Former Everett Staging Yard Disposal Site : 1 Horizon Way, Everett, Massachusetts. Chelmsford, MA: AMEC Massachusetts, Inc., 2017.

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Lawson, Daniel E. Physical processes and natural attenuation alternatives for remediation of white phosphorus contamination, Eagle River Flats, Fort Richardson, Alaska. [Hanover, N.H.]: US Army Corps of Engineers, Cold Regions Research & Engineering Laboratory, 1996.

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Book chapters on the topic "Sediment remediation"

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Bisht, Anu Singh. "Bioavailability of Metals in Sediment." In Commercial Surfactants for Remediation, 9–11. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0221-3_2.

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Reible, Danny D. "Sediment and Contaminant Processes." In SERDP/ESTCP Environmental Remediation Technology, 13–24. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6726-7_2.

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Hayter, Earl J., and Joseph Z. Gailani. "Fundamentals of Sediment Transport." In SERDP/ESTCP Environmental Remediation Technology, 25–79. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6726-7_3.

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Palermo, Michael, and Donald F. Hays. "Sediment Dredging, Treatment and Disposal." In SERDP/ESTCP Environmental Remediation Technology, 365–91. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6726-7_13.

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Reible, Danny D., and Alicia J. Shepard. "Contaminated Sediment Research and Development Needs." In SERDP/ESTCP Environmental Remediation Technology, 415–30. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-6726-7_15.

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Pamukcu, Sibel. "In Situ Soil and Sediment Remediation." In Handbook of Environmental Engineering, 209–48. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119304418.ch8.

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Zarull, Michael A., John H. Hartig, and Gail Krantzberg. "Ecological Benefits of Contaminated Sediment Remediation." In Reviews of Environmental Contamination and Toxicology, 1–18. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-1-4757-4260-2_1.

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Skei, Jens M. "A review of assessment and remediation strategies for hot spot sediments." In Sediment/Water Interactions, 629–38. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2783-7_56.

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DiToro, Dominic M., and Laura D. De Rosa. "Sediment Toxicity and Equilibrium Partitioning Development of Sediment Quality Criteria for Toxic Substances." In Remediation and Management of Degraded River Basins, 197–230. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-57752-9_5.

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Dalmacija, Milena, Božo Dalmacija, Miljana Prica, Dejan Krčmar, Milena Bečelić-Tomin, and Ljiljana Rajić. "Green Remediation—Use of Fly Ash for Remediation of Metals Polluted Sediment." In Contaminated Sediments: 5th Volume, Restoration of Aquatic Environment, 1–14. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 2012. http://dx.doi.org/10.1520/stp104198.

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Conference papers on the topic "Sediment remediation"

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Kellems, Barry, Kristof Fabian, Barbara Orchard, Rhiannon Parmelee, Brooke Bonkoski, Philip Spadaro, Jamie Beaver, William P. Fitzgerald, Roger Santiago, and Wally Rozenberg. "Randle Reef Sediment Remediation Project." In Proceedings of Ports '13: 13th Triennial International Conference. Reston, VA: American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784413067.008.

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Shephard, Eugene, Nelson Walter, Heath Downey, Peter Collopy, and John Conant. "Remediation of Uranium Impacted Sediments in a Watercourse." In ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96115.

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In 2009, remediation was initiated for a non-operational fuel cycle facility previously used for government contract work located in Windsor, Connecticut, USA. Radiological contaminants consisted primarily of high enriched uranium (HEU). Other radionuclides encountered in relatively minor amounts in certain areas of the clean-up included Co-60, Cs-137, Ra-226, Th-232 and low enriched uranium (LEU). Between 2009 and the spring of 2011, remediation efforts were focused on demolition of contaminated buildings and removal of contaminated soil. In the late spring of 2011, the last phase of remediation commenced involving the removal of contaminated sediments from portions of a 1,200 meter long gaining stream. Planning and preparation for remediation of the stream began in 2009 with submittal of permit applications to undertake construction activities in a wetland area. The permitting process was lengthy and involved securing permits from multiple agencies. However, early and frequent communication with stakeholders played an integral role in efficiently obtaining the permit approvals. Frequent communication with stakeholders throughout the planning and remediation process also proved to be a key factor in timely completion of the project. The remediation of the stream involved the use of temporary bladder berms to divert surface water flow, water diversion piping, a sediment vacuum removal system, excavation of sediments using small front-end loaders, sediment dewatering, and waste packaging, transportation and disposal. Many safeguards were employed to protect several species of concern in the work area, water management during project activities, challenges encountered during the project, methods of Final Status Survey, and stream restoration.
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Y., Ahmad, Y. Nakamura, T. Miyatuji, Y. Hagino, T. Kobayashi, Y. Shigeoka, and T. Inoue. "Remediation of Coastal Marine Sediment using Iron." In Special Session on Observations and Numerical Modeling of the Coastal Ocean Zone Dynamics. SCITEPRESS - Science and Technology Publications, 2019. http://dx.doi.org/10.5220/0007756303350339.

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Johannessen, Kim Maree, David Templeton, and Bruce McDonald. "Middle Waterway Sediment Remediation: A Case Study." In Third Specialty Conference on Dredging and Dredged Material Disposal. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40680(2003)23.

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Rude, Peter D. "The Cascade Pole Site Sediment Remediation: Part 1 - The Road to Remediation." In Third Specialty Conference on Dredging and Dredged Material Disposal. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40680(2003)131.

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She, Nian, Jian Liu, and William Lucas. "An Enzyme-Based Treatment Technology for Contaminated Sediment Remediation." In World Environmental And Water Resources Congress 2012. Reston, VA: American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412312.024.

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Romagnoli, Robert, and J. Paul Doody. "An Evaluation of Environmental Dredging for Remediation of Contaminated Sediment." In Third Specialty Conference on Dredging and Dredged Material Disposal. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40680(2003)59.

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Kleb, H. R., and R. L. Zelmer. "Remediating While Preserving Wetland Habitat at an LLR Waste Site in Canada." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7088.

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The Low-Level Radioactive Waste Management Office was established in 1982 to carry out the federal government’s responsibilities for low-level radioactive (LLR) waste management in Canada. The Office operates programs to characterize, delineate, decontaminate and consolidate historic LLR waste for interim and long-term storage. In this capacity, the Office is currently considering the remediation of 9,000 cubic metres of contaminated sediment in a coastal marsh in the context of a major remediation project involving multiple urban sites. The marsh is situated between the Lake Ontario shoreline and the urban fringe of the Town of Port Hope. The marsh is designated a Cattail Mineral Shallow Marsh under the Ecological Land Classification system for Southern Ontario and was recently named the A.K. Sculthorpe Marsh in memory of a local community member. The marsh remediation will therefore require trade offs between the disruption of a sensitive wetland and the removal of contaminated sediment. This paper discusses the issues and trade-offs relating to the waste characterization, environmental assessment and regulatory findings and thus the remediation objectives for the marsh. Considerations include the spatial distribution of contaminated sediment, the bioavailability of contaminants, the current condition of the wetland and the predicted effects of remediation. Also considered is the significance of the wetland from provincial and municipal regulatory perspectives and the resulting directives for marsh remediation.
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Wu, Po-Chang, Chih-Feng Chen, and Cheng-Di Dong. "Remediation of polycyclic aromatic hydrocarbons (PAH)-contaminated marine sediment with surfactants." In 2016 Techno-Ocean (Techno-Ocean). IEEE, 2016. http://dx.doi.org/10.1109/techno-ocean.2016.7890694.

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Varlakov, Andrey P., Sergey V. Karlin, Alexandr S. Barinov, Elena V. Zaharova, and Viatcheslav M. Ermolaev. "Study of the Radioactive Silt Sediment Cementation Techniques." In ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16138.

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Radioactive silt deposits (RSD) of the spent fuel rod cooling pools were used as an object of these studies. In this paper the following techniques were considered for the silt processing: the cementation of silt without a prior treatment, cementation of the dried silt product, cementation of the calcined silt product, and the impregnation of the calcined silt with high penetrating cement grouts. This paper reports the results of the following studies: the chemical and isotope silt composition, physicochemical silt properties, properties of the cement grouts and solidified compounds, obtained as a result of various silt processing techniques. For every processing technique the following cement compound quality index stated in the Russian standard GOST R 51883-2002 was determined: the mechanical strength, freeze-thaw resistance and leach rate of 137Cs. Effects of variations in the thermal silt treatment mode, in the water/cement ratio, and in the binder material type have been determined. Based upon the results of the studies a comparative assessment of the silt cementation techniques has been performed.
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Reports on the topic "Sediment remediation"

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Bridges, Todd, Sandra Newell, Alan Kennedy, David Moore, Upal Ghosh, Trevor Needham, Huan Xia, Kibeum Kim, Charles Menzie, and Konrad Kulacki. Long-term stability and efficacy of historic activated carbon (AC) deployments at diverse freshwater and marine remediation sites. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38781.

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A number of sites around the United States have used activated carbon (AC) amendments to remedy contaminated sediments. Variation in site-specific characteristics likely influences the long-term fate and efficacy of AC treatment. The long-term effectiveness of an AC amendment to sediment is largely unknown, as the field performance has not been monitored for more than three years. As a consequence, the focus of this research effort was to evaluate AC’s long-term (6–10 yr) performance. These assessments were performed at two pilot-scale demonstration sites, Grasse River, Massena, New York and Canal Creek, Aberdeen Proving Ground (APG), Aberdeen, Maryland, representing two distinct physical environments. Sediment core samples were collected after 6 and 10 years of remedy implementation at APG and Grasse River, respectively. Core samples were collected and sectioned to determine the current vertical distribution and persistence of AC in the field. The concentration profile of polychlorinated biphenyls (PCBs) in sediment pore water with depth was measured using passive sampling. Sediment samples from the untreated and AC-treated zones were also assessed for bioaccumulation in benthic organisms. The data collected enabled comparison of AC distribution, PCB concentrations, and bioaccumulation measured over the short- and long-term (months to years).
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Averett, Daniel E., Bret D. Perry, Elizabeth J. Torrey, and Jan A. Miller. Review of Removal, Containment and Treatment Technologies for Remediation of Contaminated Sediment in the Great Lakes. Fort Belvoir, VA: Defense Technical Information Center, December 1990. http://dx.doi.org/10.21236/ada233946.

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Kennedy, Alan, Mark Ballentine, Andrew McQueen, Christopher Griggs, Arit Das, and Michael Bortner. Environmental applications of 3D printing polymer composites for dredging operations. Engineer Research and Development Center (U.S.), January 2021. http://dx.doi.org/10.21079/11681/39341.

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This Dredging Operations Environmental Research (DOER) technical note disseminates novel methods to monitor and reduce contaminant mobility and bioavailability in water, sediments, and soils. These method advancements are enabled by additive manufacturing (i.e., three-dimensional [3D] printing) to deploy and retrieve materials that adsorb contaminants that are traditionally applied as unbound powders. Examples of sorbents added as amendments for remediation of contaminated sediments include activated carbon, biochar, biopolymers, zeolite, and sand caps. Figure 1 provides examples of sorbent and photocatalytic particles successfully compounded and 3D printed using polylactic acid as a binder. Additional adsorptive materials may be applicable and photocatalytic materials (Friedmann et al. 2019) may be applied to degrade contaminants of concern into less hazardous forms. This technical note further describes opportunities for U.S. Army Corps of Engineers (USACE) project managers and the water and sediment resource management community to apply 3D printing of polymers containing adsorptive filler materials as a prototyping tool and as an on-site, on-demand manufacturing capability to remediate and monitor contaminants in the environment. This research was funded by DOER project 19-13, titled “3D Printed Design for Remediation and Monitoring of Dredged Material.”
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Antrim, Liam D., and Nancy P. Kohn. POST-REMEDIATION BIOMONITORING OF PESTICIDES AND OTHER CONTAMINANTS IN MARINE WATERS AND SEDIMENT NEAR THE UNITED HECKATHORN SUPERFUND SITE, RICHMOND, CALIFORNIA. Office of Scientific and Technical Information (OSTI), September 2000. http://dx.doi.org/10.2172/965181.

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LD Antrim and NP Kohn. Post-remediation biomonitoring of pesticides and other contaminants in marine waters and sediment near the United Heckathorn Superfund Site, Richmond, California. Office of Scientific and Technical Information (OSTI), May 2000. http://dx.doi.org/10.2172/755571.

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LD Antrim and NP Kohn. Post-Remediation Biomonitoring of Pesticides and Other Contaminants in Marine Waters and Sediment Near the United Heckathorn Superfund Site, Richmond, California. Office of Scientific and Technical Information (OSTI), September 2000. http://dx.doi.org/10.2172/761575.

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Antrim, Lyle D., and Nancy P. Kohn. Post-Remediation Biomonitoring of Pesticides and Other Contaminants in Marine Waters and Sediment Near the United Heckathorn Superfund Site, Richmond, California. Office of Scientific and Technical Information (OSTI), May 2000. http://dx.doi.org/10.2172/15002695.

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Strickland, Christopher E., Amanda R. Lawter, Nikolla Qafoku, James E. Szecsody, Michael J. Truex, and Guohui Wang. Evaluation of Iodine Remediation Technologies in Subsurface Sediments: Interim Status Report. Office of Scientific and Technical Information (OSTI), September 2017. http://dx.doi.org/10.2172/1418095.

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Gschwend, Philip, and Kevin Palaia. Passive PE Sampling in Support of In Situ Remediation of Contaminated Sediments. Fort Belvoir, VA: Defense Technical Information Center, August 2015. http://dx.doi.org/10.21236/ad1002553.

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Knox, A., M. Michael Paller, D. Danny D. Reible, and I. Ioana G. Petrisor. INNOVATIVE IN-SITU REMEDIATION OF CONTAMINATED SEDIMENTS FOR SIMULTANEOUS CONTROL OF CONTAMINATION AND EROSION. Office of Scientific and Technical Information (OSTI), November 2007. http://dx.doi.org/10.2172/921682.

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