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Relevant bibliographies by topics / Soil binding sites

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Academic literature on the topic 'Soil binding sites'

Author: Grafiati

Published: 4 June 2021

Last updated: 20 February 2023

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Journal articles on the topic "Soil binding sites"

1

Kogan, Marcelo, Alejandra Metz, and Rodrigo Ortega. "Adsorption of glyphosate in chilean soils and its relationship with unoccupied phosphate binding sites." Pesquisa Agropecuária Brasileira 38, no. 4 (April 2003): 513–19. http://dx.doi.org/10.1590/s0100-204x2003000400010.

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The objective of this work was to investigate glyphosate adsorption by soils and its relationship with unoccupied binding sites for phosphate adsorption. Soil samples of three Chilean soils series - Valdivia (Andisol), Clarillo (Inceptisol) and Chicureo (Vertisol) - were incubated with different herbicide concentrations. Glyphosate remaining in solution was determined by adjusting a HPLC method with a UV detector. Experimental maximum adsorption capacity were 15,000, 14,300 and 4,700 mg g¹ for Valdivia, Clarillo, and Chicureo soils, respectively. Linear, Freundlich, and Langmuir models were used to describe glyphosate adsorption. Isotherms describing glyphosate adsorption differed among soils. Maximum adjusted adsorption capacity with the Langmuir model was 231,884, 17,874 and 5,670 mg g-1 for Valdivia, Clarillo, and Chicureo soils, respectively. Glyphosate adsorption on the Valdivia soil showed a linear behavior at the range of concentrations used and none of the adjusted models became asymptotic. The high glyphosate adsorption capacity of the Valdivia soil was probably a result of its high exchangeable Al, extractable Fe, and alophan and imogolite clay type. Adsorption was very much related to phosphate dynamics in the Valdivia soil, which showed the larger unoccupied phosphate binding sites. However relationship between unoccupied phosphate binding sites and glyphosate adsorption in the other two soils (Clarillo and Chicureo) was not clear.

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Peng, Shimeng, Pei Wang, Lanfang Peng, Tao Cheng, Weimin Sun, and Zhenqing Shi. "Predicting Heavy Metal Partition Equilibrium in Soils: Roles of Soil Components and Binding Sites." Soil Science Society of America Journal 82, no. 4 (May 17, 2018): 839–49. http://dx.doi.org/10.2136/sssaj2018.03.0104.

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3

Gustafsson, Jon Petter, Charlotta Tiberg, Abubaker Edkymish, and Dan Berggren Kleja. "Modelling lead(II) sorption to ferrihydrite and soil organic matter." Environmental Chemistry 8, no. 5 (2011): 485. http://dx.doi.org/10.1071/en11025.

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Environmental contextLead(II) is a toxic metal pollutant with many anthropogenic sources. We show that lead(II) is bound more strongly to soil surfaces than previously understood. This knowledge may lead to better models for lead(II) dissolution from the soils, which will improve risk assessments for this metal. AbstractLead(II) adsorption to soil organic matter and iron (hydr)oxides is strong, and may control the geochemical behaviour of this metal. Here, we report the adsorption of Pb2+ (i) to 2-line ferrihydrite, and (ii) to a mor layer. The results showed that ferrihydrite has heterogeneous Pb2+ binding. Use of a surface complexation model indicated that ~1 % of the surface sites adsorbed Pb2+ more strongly than the remaining 99 %. Although only one surface complexation reaction was used (a bidentate complex of the composition (≡FeOH)2Pb+), three classes of sites with different affinity for Pb2+ were needed to simulate Pb2+ binding correctly over all Pb/Fe ratios analysed. For the mor layer, Pb2+ sorption was much stronger than current models for organic complexation suggest. The results could be described by the Stockholm Humic Model when the binding heterogeneity was increased, and when it was assumed that 0.2 % of the binding sites were specific for Pb. Use of revised model parameters for nine Vietnamese soils suggest that lead(II) binding was more correctly simulated than before. Thus, underestimation of lead(II) sorption to both (hydr)oxide surfaces and organic matter may explain the failure of previous geochemical modelling attempts for lead(II).

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Naidu, R., S. Mcclure, NJ Mckenzie, and RW Fitzpatrick. "Soil solution composition and aggregate stability changes caused by long-term farming at four contrasting sites in South Australia." Soil Research 34, no. 4 (1996): 511. http://dx.doi.org/10.1071/sr9960511.

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The effect of long-term farming on the cation exchange capacity (CEC), organic carbon content, soil solution composition, and aggregate stability was investigated using contrasting soils from 4 sites in the Mid North of South Australia. Undisturbed and farmed profiles were characterised at each site. Farming led to a 10–50% decrease, approximately, in organic matter and CEC in the surface horizon. Scanning electron microscopic study of the surface and selected subsurface soils revealed poor aggregation, compaction, reduced porosity, and a decrease in aggregate particle size in the farmed surface soils. Intra-aggregate binding in the undisturbed soils appeared to be largely due to fungal hypha, with the roots largely contributing to inter-aggregate binding of soil particles. Electrical conductivity (EC) of soil solutions was generally 2–3 times higher in the undisturbed soils than farmed soils, suggesting increased leaching of ions associated with loss of tree cover. This was also supported by a decrease in the concentrations of mobile ions such as Cl-and Na+ in the farmed soils. The concentrations of Na+ and K+ decreased with farming leading to a decrease in the Gapon selectivity constant for Na–Ca and K–Ca exchange. The changes in soil solution composition together with the decline in organic matter concentrations resulted in increased sensitivity of soils to dispersion.

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Ghabbour, Elham A., Geoffrey Davies, Nadeem K. Ghali, and Matthew D. Mulligan. "The effect of temperature on tight metal binding by peat and soil derived solid humic acids." Canadian Journal of Soil Science 81, no. 3 (August 1, 2001): 331–36. http://dx.doi.org/10.4141/s00-065.

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The brown biomaterials called humic acids (HA) in peats and soils retain water and bind metal cations and other solutes. Studies of the interactions of purified solid peat and soil-derived HA from different countries with metal cations in water probe HA microstructures and help to characterize the metal binding sites. Labile cations such as Caaq2+, Co aq2+, Cu aq2+, Fe aq3+, Mg aq2+ and Mn aq2+ tightly bind to solid HAs in sequential steps. The isotherms A vs. c are well fitted with the Langmuir model and plots of 1/A vs. 1/c are linear for each step. Here, A is mmol bound metal g–1 HA and c is the equilibrium cation concentration (M). This paper compares the stoichiometric site capacities vi and equilibrium constants Ki for tight binding of Ca aq2+, Co aq2+, Cu aq2+, Fe aq3+, Mg aq2+ and Mn aq2+ at different solid HA sites. Measurements at different temperatures give linearly correlated metal binding enthalpy and entropy changes, indicating that conformational changes and cation/HA hydration/dehydration are important factors in metal binding and release by solid HAs. Key words: Humic acids; metal binding; isotherms; thermodynamics

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6

Kayler, Z. E., M. Kaiser, A. Gessler, R. H. Ellerbrock, and M. Sommer. "Application of <i>δ</i><sup>13</sup>C and <i>δ</i><sup>15</sup>N isotopic signatures of organic matter fractions sequentially separated from adjacent arable and forest soils to identify carbon stabilization mechanisms." Biogeosciences Discussions 8, no. 2 (March 1, 2011): 1985–99. http://dx.doi.org/10.5194/bgd-8-1985-2011.

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Abstract. Identifying the chemical mechanisms behind soil carbon bound in organo-mineral complexes is necessary to determine the degree to which soil organic carbon is stabilized belowground. We used the δ13C and δ15N isotopic signatures from two organic matter (OM) fractions from soil to identify the likely binding mechanisms involved. We used OM fractions hypothesized to contain carbon stabilized through organo-mineral complexes: (1) OM separated chemically with sodium pyrophosphate (OM(PY)) and (2) OM stabilized in microstructures found in the chemical extraction residue (OM(ER)). Furthermore, because the OM fractions were separated from five different soils with paired forest and arable land use histories, we could address the impact of land use change on carbon binding and processing mechanisms within these soils. We used partial least squares regression to analyze patterns in the isotopic signature of OM with established proxies of different binding mechanisms. Parsing soil OM into different fractions is a systematic method of dissection, however, we are primarily interested in how OM is bound in soil as a whole, requiring a means of re-assembly. Thus, we implemented the recent zonal framework described by Kleber et al. (2007) to relate our findings to undisturbed soil. The δ15N signature of OM fractions served as a reliable indicator for microbial processed carbon in both arable and forest land use types. The δ13C signature of OM fractions in arable sites did not correlate well with proxies of soil mineral properties while a consistent pattern of enrichment was seen in the δ13C of OM fractions in the forest sites. We found a significant difference in δ13C of pooled OM fractions between the forest and arable land use type although it was relatively small (<1‰). We found different binding mechanisms predominate in each land use type. The isotopic signatures of OM fractions from arable soils were highly related to the clay and silt size particles amount while organic matter not directly bound to mineral surfaces in the contact zone was involved in cation bonding with Ca. In forest soils, we found a relationship between isotopic signatures of OM(PY) and the ratio of soil organic carbon content to soil surface area (SOC/SSA). For arable soils, the formation of OM(PY)-Ca-mineral associations seems to be a relevant OM stabilization mechanism while the OM(PY) of forest soils seems to be separated from layers of slower exchange not directly attached to mineral surfaces. This means there is a potential to build multiple OM layers on mineral particles in the arable soil and thus the potential for carbon accumulation.

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Burlakovs, Juris, Raimonds Kasparinskis, and Maris Klavins. "Leaching of Contamination from Stabilization/Solidification Remediated Soils of Different Texture." Scientific Journal of Riga Technical University. Environmental and Climate Technologies 9, no. 1 (September 1, 2012): 12–16. http://dx.doi.org/10.2478/v10145-012-0011-0.

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Abstract Development of soil and groundwater remediation technologies is a matter of great importance to eliminate historically and currently contaminated sites. Stabilization/solidification (S/S) refers to binding of waste contaminants to a more chemically stable form and thus diminishing leaching of contamination. It can be performed using cement with or without additives in order to stabilize and solidify soil with the contamination in matrix. A series of experiments were done to determine leaching properties of spiked soils of different texture bound with cement. Results of experiments showed, that soil texture (content of sand, silt and clay particles) affects the leaching of heavy metals from stabilized soils.

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Taillon, K. M., and W. H. Hendershot. "Measurement and modeling of surface charge and cation binding in agricultural soil." Canadian Journal of Soil Science 88, no. 5 (November 1, 2008): 749–59. http://dx.doi.org/10.4141/cjss07076.

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Models of metal adsorption have typically been developed and tested for soil components rather than whole soils and at cation concentrations higher than usual environmental conditions. This study investigates whether the non-ideal consistent competitive adsorption (NICA) model can be applied to ion binding in whole soils at low total metal concentrations. Surface charge was measured for 18 agricultural soils from southern Quebec over the pH range 3.5 to 8. The adsorption of Ca, Cd, Cu, Pb and Zn was also measured for three total metal concentrations of 2, 5 and 10 mg L-1 at pH 6 in a 0.005 M Ca(ClO4)2 solution. NICA model parameters were solved for each soil using the surface charge and adsorption data and a non-linear least squares fitting routine. Two types of binding sites were identified: the first type had a pKa near 4 while the second type had a pKa near 7.5. The first type of binding site contributed the greater proportion of the variable charge over most of the pH range, and the second site was unimportant at the lower pHs. The surface charge was accurately described by the NICA model with a mean R2 of 0.995. A mean of the surface charge parameters describing H+ binding accounted for more than 95% of the variable charge on the soils. For individual soils, the NICA model gave a fit to the experimental data with mean R2 values for Ca, Cd, Cu, Pb and Zn of 1.00, 0.906, 0.879 (two concentrations only), 0.825 and 0.918 respectively. When mean adsorption parameters, instead of values determined for each soil individually, are used, the model gave mean R2s for Ca, Cd, Cu, Pb and Zn of 0.938, 0.941, 0.998 (two concentrations only), 0.978 and 0.935. It seems that the NICA model can be used to describe the surface charge and adsorption of cations by whole soils. The mean adsorption parameters appear to describe the adsorption behavior of the soil nearly as well as the individually fitted parameters. This implies that mean parameters for these agricultural soils may provide satisfactory predictions for the adsorption behavior of similar soils. Key words: NICA model, NICCA, surface charge, cation binding, agricultural soil

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Liu, Paiyu, Pei Wang, Yang Lu, Yang Ding, Guining Lu, Zhi Dang, and Zhenqing Shi. "Modeling kinetics of heavy metal release from field-contaminated soils: Roles of soil adsorbents and binding sites." Chemical Geology 506 (February 2019): 187–96. http://dx.doi.org/10.1016/j.chemgeo.2018.12.030.

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10

Peng, Lanfang, Zhenqing Shi, Pei Wang, Wei Li, Zhang Lin, Zhi Dang, and Donald L. Sparks. "A novel multi-reaction model for kinetics of Zn release from soils: Roles of soil binding sites." Journal of Colloid and Interface Science 514 (March 2018): 146–55. http://dx.doi.org/10.1016/j.jcis.2017.12.006.

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Dissertations / Theses on the topic "Soil binding sites"

1

Jeong, Chang-Yoon. "Modelling metal competition for adsorption sites on humic acid." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389363.

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Ryan, Gregory Lawrence, University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "Mechanisms of phosphorus removal by constructed wetland systems." THESIS_CSTE_SFH_Ryan_G.xml, 2003. http://handle.uws.edu.au:8081/1959.7/532.

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The objective of this thesis is to provide a detailed investigation of phosphorus transformations in constructed wetlands. Five replicate Wetland Units were constructed adjacent the wastewater treatment plant in Richmond, Australia. Each wetland was supplied with secondary or tertiary sewage effluent and planted identically with species of schoenoplectus, Phragmites, and Triglochin. Detention times for each Unit were established at 5 or 15 days. Phosphorus concentrations were monitored routinely at the inlet and outlet of each Unit, with a number of specific studies conducted to investigate internal transformations. These studies, undertaken in 1994 and 1995, determined that plants were the dominant phosphorus store in the short term, during wetland establishment and that sediments were the dominant long-term phosphorus storage compartment. Laboratory investigations indicated that there was no significant role for bacteria or algae in the water column relating to phosphorus sequestering, although microorganisms appeared to have some role in the translocation of phosphorus to soil binding sites. After phosphorus contacted the soil surface, transpiration related entrainment of surface water and direct phosphorus uptake by plants were the dominant mechanisms for causing phosphorus to move deeper through the soil substrate. Removal of phosphorus from the interstitial water was by incorporation to biomass or direct sorption to soil binding sites
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Ryan, Gregory Lawrence. "Mechanisms of phosphorus removal by constructed wetland systems." Thesis, View thesis, 2003. http://handle.uws.edu.au:8081/1959.7/532.

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The objective of this thesis is to provide a detailed investigation of phosphorus transformations in constructed wetlands. Five replicate Wetland Units were constructed adjacent the wastewater treatment plant in Richmond, Australia. Each wetland was supplied with secondary or tertiary sewage effluent and planted identically with species of schoenoplectus, Phragmites, and Triglochin. Detention times for each Unit were established at 5 or 15 days. Phosphorus concentrations were monitored routinely at the inlet and outlet of each Unit, with a number of specific studies conducted to investigate internal transformations. These studies, undertaken in 1994 and 1995, determined that plants were the dominant phosphorus store in the short term, during wetland establishment and that sediments were the dominant long-term phosphorus storage compartment. Laboratory investigations indicated that there was no significant role for bacteria or algae in the water column relating to phosphorus sequestering, although microorganisms appeared to have some role in the translocation of phosphorus to soil binding sites. After phosphorus contacted the soil surface, transpiration related entrainment of surface water and direct phosphorus uptake by plants were the dominant mechanisms for causing phosphorus to move deeper through the soil substrate. Removal of phosphorus from the interstitial water was by incorporation to biomass or direct sorption to soil binding sites

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Books on the topic "Soil binding sites"

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Te shu di zhi sheng gong cheng: Vegetation engineering for specific sites. Taibei Shi: Wu nan tu shu chu ban gong si, 2012.

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Book chapters on the topic "Soil binding sites"

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Glüsenkamp, K.-H., H. Kosegarten, K. Mengel, F. Grolig, A. Esch, and H. E. Goldbach. "A fluorescein boronic acid conjugate as a marker for borate binding sites in the apoplast of growing roots of Zea mays L. and Helianthus annuus L." In Boron in Soils and Plants, 229–35. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5564-9_44.

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"Ion Binding to Minerals: Discrete Site Modeling." In Soil Colloids, 444–75. CRC Press, 2016. http://dx.doi.org/10.1201/b15349-17.

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"Ion Binding to Humic Substances: Distributed Site Modeling." In Soil Colloids, 476–507. CRC Press, 2016. http://dx.doi.org/10.1201/b15349-18.

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