Дисертації з теми "Acide sulfate soils"
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Yvanes-Giuliani, Yliane. "Aluminium geochemistry in coastal lowland acid sulfate soils (CLASS) : speciation, reactivity and mobility." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4364.
Повний текст джерелаThe aim of this thesis was to further understanding on Al geochemistry in coastal lowland acid sulfate soils (CLASS). It was observed that Al was present almost solely (> 98%) as negatively charged complexes in CLASS pore-waters, presumably with natural organic matter. Isotopically exchangeable concentrations (E-values) of Al and extraction solutions used to estimate the exchangeable pool showed that 1 M KCl always underestimated isotopically exchangeable Al concentrations in these soils and that 0.2 M CuCl2 improved agreement between both methodologies but sometimes overestimated corresponding E values. A sequential extraction procedure showed that substantial amounts of Al have already been dissolved from primary aluminosilicates initially present in the soils and remain in the soils mostly as reactive secondary Al minerals. The outcomes of this thesis significantly further our understanding of Al geochemistry in CLASS environments and how this knowledge can be incorporated into land management practices
Karczewska, Hanna. "The effects of acid leaching on some physico-chemical properties of Quebec soil /." Thesis, McGill University, 1987. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=64017.
Повний текст джерелаMorgan, Marcus John. "Optimal prediction of coastal acid sulphate soil severity using geographic information systems." Access electronically, 2006. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20070208.153133/index.html.
Повний текст джерелаMustafa, Akhmad Biological Earth & Environmental Sciences Faculty of Science UNSW. "Improving acid sulfate soils for brackish water aquaculture ponds in South Sulawesi, Indonesia." Awarded by:University of New South Wales. Biological, Earth & Environmental Sciences, 2007. http://handle.unsw.edu.au/1959.4/40619.
Повний текст джерелаReynolds, Jason Kurt Faculty of Science UNSW. "Hydrogel determined metal bioaccessibility in acid sulfate-affected landscapes." Awarded by:University of New South Wales, 2008. http://handle.unsw.edu.au/1959.4/41436.
Повний текст джерелаBryson, Autumn Leah. "Sulfate sorption of acidified forest soils in the Otter Creek Wilderness area." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4900.
Повний текст джерелаTitle from document title page. Document formatted into pages; contains vi, 36 p. : ill. (some col.), col. maps. Includes abstract. Includes bibliographical references (p. 31-36).
Belkacem, Saïd. "Étude de la restauration des sols acides soumis à de forts apports acides : effet des formes et doses d'amendements sur le fonctionnement d'un sol acide forestier." Nancy 1, 1993. http://www.theses.fr/1993NAN10282.
Повний текст джерелаGunnarsson, Niklas. "Mineralogical speciation of sulfur in acid sulfate soils from Luleå, Sweden." Thesis, Luleå tekniska universitet, Geovetenskap och miljöteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-71759.
Повний текст джерелаCoastal watercourses in Bottenviken: Method development and ecological restoration- A cross-border Swedish-Finnish cooperation project
Banasiak, Laura Joan. "The role of a subsurface lime-fly ash barrier in the mitigation of acid sulphate soils." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20050706.121221/index.html.
Повний текст джерелаNguyen, Nga. "Multivariate analysis and GIS in generating vulnerability map of acid sulfate soils." Thesis, KTH, Mark- och vattenteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170472.
Повний текст джерелаDiallo, Ndeye Helene. "Improved Management of Acid Sulfate Soils for Rice Production in Casamance, Senegal." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81697.
Повний текст джерелаMaster of Science
Courchesne, François. "Mechanisms regulating sulfate movement in some podzols from Quebec." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75774.
Повний текст джерелаMcBroom, Mark David. "Kinetics and community profiling of sulfate-reducing bacteria in organic carbon treated mine tailings." Thesis, Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/mcbroom/McBroomM0505.pdf.
Повний текст джерелаLindström, Carola. "Acid Sulfate Soils and Metal Accumulation in Sediments in Rosån Catchment, Northern Sweden." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-325213.
Повний текст джерелаPå senare tid har man uppmärksammat de miljöproblem som uppstår när finkorniga sediment, innehållande järnsulfider, oxiderar på grund av mänsklig påverkan, t ex. dikning, eller annan typ av aktivitet som sänker grundvattennivån. När järnsulfiderna oxiderar bildas svavelsyra som gör att pH- värdet i marken blir väldigt lågt. Den sura miljön i dessa så kallade sura sulfatjordar, gör i sin tur att mineraler i marken vittrar fortare med påföljden att både surt vatten och ökade mängder metaller, sprids till närliggande vattendrag, sjöar och hav. Lågt pH och höga halter av metaller i vatten påverkar även vattenkvalitén negativt och har rapporterats orsaka fiskdöd och minskad akvatisk mångfald. Sura sulfatjordar är globalt förekommande och återfinns bland annat längs Bottenvikens kuster. De har kunnat bildas genom att sulfidhaltiga sediment, som avsattes i Östersjön efter den senaste istiden, nu befinner sig ovan havsnivån på grund av landhöjningen. I Finland har man i flera studier sett ett samband mellan sura sulfatjordar och ökade metallhalter i nyligen avsatta kustsediment och man kan anta att liknande förhållande gäller även i Sverige. Med finansiellt stöd från EU-projektet “Kustmynnande Vattendrag i Bottenviken-Metodutveckling och Ekologisk Restaurering” (Interreg Nord) genom Sveriges geologiska undersökning (SGU) och i samarbete med Länsstyrelsen i Norrbotten, har bottensediment från tre sjöar och två fjärdar i Rosåns avrinningsområde i Norrbotten provtagits och analyserats. För att fastställa hur koncentrationerna har förändrats över tiden har metallhalterna i de nyligen avsatta sedimenten jämförts med koncentrationerna i äldre sediment. Även jordprofiler från sura sulfatjordar i området har studerats för att kunna utvärdera ett ev. samband mellan urlakade ämnen i jordarna och ökade halter i sedimenten. Granskning av hur långt metallerna transporteras i systemet har gjorts, liksom försök att hitta kopplingar i tiden till mänsklig påverkan som t.ex. dikning. I de översta sedimenten kan man, förutom en generellt ökande trend av aluminium (Al), arsenik (As), kadmium (Cd), kobolt (Co), koppar (Cu), järn (Fe), mangan (Mn), nickel, (Ni) bly (Pb), sällsynta jordartsmetaller (REE) och zink (Zn), också se tydliga toppar med ökade halter av dessa ämnen på minst två specifika djup. De sura sulfatjordarna, som uppmätte pH-värden ner till 2,62, visade tecken på urlakning av Al, Cd, Co, Ni, Mn, REE, Zn och till viss del också As, Cu, Fe och Pb, varpå en trolig relation mellan sura sulfatjordar och ökade metallhalter i nyligen avsatta sediment kan fastställas. En uppskattning av ackumulationshastigheten, som gjordes utifrån när de provtagna sjöarna skiljdes från havet, och sedimentdjupet som visar övergången från hav till sjö, visar att de observerade topparna av ökade metallkoncentrationer i sedimenten skulle kunna vara förknippade med dikning i början av 1900-talet och efter andra världskriget. För en säker bestämning av sambandet till specifika händelser behövs dock en riktig datering.
Lusk, Mary Gilchrist. "Sulfate Dynamics and Base Cation Release in a High Elevation Appalachian Forest Soil." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36692.
Повний текст джерелаExperiments with SO42- adsorption and desorption divide the soils into two categories: (i) shallow surface horizons with high organic matter and little Fe oxide content which had little ability to adsorb additional SO42- and low capacity to retain SO42-; and (ii) deeper subsurface soils with low organic matter and high Fe oxide content which could adsorb SO42- at solution concentrations above 0.5 mmol/L. All soil horizons desorbed SO42- and had no ability for additional adsorption at solution concentrations below 0.5 mmol/L, which implies that the site may be saturated with respect to natural conditions. Initial mass (IM) and Langmiur modeling were used to illustrate SO42- dynamics and make correlations with soil physical, chemical, and mineralogical properties. Fe oxides and Al-saturated organic matter were shown to be the preferential sites for SO42- adsorption but may be already saturated or very near saturation.
Preliminary results from the base release study indicate that the two soils are dominated by different chemical processes and hence release ions into soil solution at different rates. Ion release is shown to be a function of both reactions on the exchange complex and the dissolution of mineral components.
Master of Science
Landin, Nils Charles. "Acid sulfate weathering in natural glacially derived soils of north western Indiana and the environmental implications." Thesis, Purdue University, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10159495.
Повний текст джерелаNorthwestern Indiana has land surfaces and soils that are around 15,000 years old, resulting from sediments deposited from the Wisconsinan Glaciation during the late Pleistocene period. These geologically young soils exhibit depletion of base cations and low pH's (near 4.0) which are chemically similar to much older and more intensely weathered soils. We hypothesize that FeS2 (iron pyrite) within the shale fragments of the glacial deposits was oxidized upon exposure of oxygen near the earth's surface and resulted in naturally occurring acid sulfate weathering. To test our hypothesis, we isolated the area with ArcGIS, collected clast samples from gravel pits, utilized historic soils databases, and analyzed samples with X-ray diffraction to determine if associated properties and soil minerals would support acid sulfate weathering as the cause of the current soil chemical properties. Soil samples and glacial outwash cobble-sized clasts were collected and X-ray diffraction was used to determine the presence of pyrite or of pyrite weathering products jarosite and gypsum. Existing soil databases and lab data were examined to obtain further details of the occurrence of the potential acid sulfate weathering. A review of the geologic literature was also conducted to put the acid sulfate weathering processes into a landscape perspective and geologic context. The clast samples and some soil samples indicated the presence of jarosite and gypsum which are commonly associated with acid sulfate weathering. This research also found that ultic soil properties and low pH soils were associated with sandy glacial outwash and this information was displayed spatially. The sandy outwash has a lower CEC and lower buffering capacity when compared to nearby higher clayey glacial till. There was inferential evidence of acid sulfate weathering in calcareous glacial which is illustrated by iron oxide pseudomorphs. The lack of initial pyritic shale combined with the neutralizing potential for the calcareous till prevented these soils from developing ultic properties and low pH's. Additionally, this research assessed the potential for naturally occurring arsenic in the soils. Elevated arsenic levels were found in soils that occurred in the lowest part of the landscape. Understanding the process of naturally occurring acid sulfate weathering and associated elevated arsenic within this landscape will provide more information on use and management of these areas.
Blomkvist, Bella. "Temporal and spatial trends of heavy metal leakage from acid sulfate soils : Leakage of Ni, Zn, Cu and Fe to freshwater and marine sediments, North-eastern Sweden." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-174837.
Повний текст джерелаKozhukhar, Nazariy, and Назарій Кожухар. "Microbial communities of soils and acid mine drainage bioremediation." Thesis, National Aviation University, 2021. https://er.nau.edu.ua/handle/NAU/50768.
Повний текст джерелаAs a result of restructuring in 1990-2000 and occupation in 2014 the coal-rich Donetsk Basin saw massive mine closures. Leaving behind acid mine drainage, dam failures, non-remediated areas and cases of direct discharges into waterways that could lead to serious and long-term environmental impacts. The elimination of mines leads to changes in natural conditions for the living organisms and the formation of unfavorable environmental situations, such as. Acidic mine drainage occurs naturally in some environments as part of rock weathering, but is enhanced by large-scale soil disturbances common in mining. Acid mine drainage neutralization depends on its chemistry, electron donors / receptors, temperature, and pH. Iron-reducing bacteria and sulfate-reducing bacteria form the root component of these bioreactors. Acidophilic heterotrophic bacteria promote the oxidation of ferrous to ferric iron in acidic waters.
В результаті реструктуризації в 1990-2000 рр. та окупації в 2014 р. багатого вугіллям Донецький басейн побачив масове закриття шахт. Залишаючи за собою дренаж кислотних шахт, аварії дамб, не відновлювані ділянки та випадки прямих скидів у водні шляхи, які можуть призвести до серйозних і довгострокових впливів на навколишнє середовище. Ліквідація шахт призводить до змін природних умов для живих організмів та формування несприятливих екологічних ситуацій. Кислотний дренаж шахт природним чином відбувається в деяких середовищах як частина вивітрювання гірських порід, але посилюється широкомасштабними ґрунтовими порушеннями, характерними для гірничодобувних робіт. Нейтралізація дренажу кислотних шахт залежить від його хімії, донорів / акцепторів електронів, температури та рН. Основним компонентом цих біореакторів є залізоредукуючі бактерії та сульфатредукуючі бактерії. Ацидофільні гетеротрофні бактерії сприяють окисленню заліза(ІІ) до заліза(ІІІ) в кислих водах.
Diatta, Sekouna. "Improving Pearl Millet (Pennisetum glaucum (L.) R.Br.) Productivity in Salt-affected soils in Senegal: A Greenhouse and Field investigation." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81975.
Повний текст джерелаMaster of Science
Wu, Xiaofen. "Structure and function of microbial communities in acid sulfate soil and the terrestrial deep biosphere." Doctoral thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-52538.
Повний текст джерелаGroves, Sarah Anne Biological Earth & Environmental Sciences Faculty of Science UNSW. "Spatial and temporal variation in the hydrochemistry of marine prawn aquaculture ponds built in acid sulfate soils, Queensland, Australia." Publisher:University of New South Wales. Biological, Earth & Environmental Sciences, 2008. http://handle.unsw.edu.au/1959.4/43273.
Повний текст джерелаMENDONÇA, Suzana Kelly Gomes de. "Caracterização de Solos Tiomórficos da várzea do Rio Camocim, Caaporã, PB." Universidade Federal Rural de Pernambuco, 2011. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5353.
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Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq
Low lands in Brazil have a great potential for agriculture, however, they have some limitations due to the presence of high water table and severe risk of flooding. When located near by the sea cost, these floodplains can have influence of the sea water, resulting in the presence of sulfide soils, which, if drained, can develop sulfuric horizons. The sulfuric horizons are mainly characterized by high levels of acidity and exchangeable aluminum, which can result in serious environmental impact to the ecosystem. The agriculture use of these soils requires a deep knowledge of soil physical, chemical and mineralogical properties, in order to support the development of sustainable management practices. The objective of this work was to study chemical and mineralogical properties of acid sulfate soils formed in the floodplain of Camocim river, Caaporã municipality, state of Paraíba. The main aim was to support decisions on the viability of sugarcane cropping in these areas. Soils were characterized morphologically and samples were collected along a transect from the high land towards the river channel. Besides the routine physical, chemical and mineralogical analysis, other determinations were carried out involving total sulfur, incubation pH, soluble anions, electrical conductivity of the saturation extract and sequential iron extraction. The soils were classified as: Argisolic,Dystric Tb Haplic Gleysol (P1) Typic Sapric Sulfide Organosol (P2), Organosolic Orthic Sulfide Gleysol (P3 and P4). Soil distribution in the landscape of the Camocim river floodplain is mainly related to the relief, which determines drainage, water table and, consequently, the soil forming processes related to water excess. The presence of sulfuric horizons occur at the surface, in the very poorly drained soil profiles, and at 43 cm depth in the poorly drained soils close to the river channel. The studied acid sulfate soils do not have salinity at present time, and the high electrical conductivity is determined by the formation sulfuric acid (H+ + SO4 2-) from pyrite oxidation. Sugarcane crop decay in the floodplain of Camocim River, after one year of cultivation was a consequente of the sulfuric horizon formation after the implementation of the drainage system in soils with sulfide materials. The main soil minerals, indentified by X-ray diffraction, in the clay fraction were jarosite quartz, feldspars, kaolinite, smectite (essentially montmorillonite), illite and gibbsite. Quartz and feldspars were the minerals identified in sand and silt fractions. The results of the iron sequential extraction showed predominance of non crystalline iron oxides and very low amounts or absence of iron associated with pyrite, reflecting the advanced oxidation stage determined by the drainage system.
As áreas de várzeas no Brasil apresentam um grande potencial para a agricultura, no entanto, estas áreas apresentam algumas limitações ao uso agrícola devido à presença de lençol freático elevado e risco freqüente de inundação. Quando localizadas em áreas litorâneas, estas áreas podem sofrer influência marinha podendo apresentar solos tiomórficos que, quando drenados, formam horizonte sulfúrico, caracterizados principalmente pela elevada acidez, elevados teores de alumínio trocável, podendo causar sérios impactos ambientais no ecossistema onde ocorrem. A incorporação destas áreas no processo produtivo depende de um profundo conhecimento das propriedades físicas, mineralógicas e principalmente químicas, de forma a subsidiar o desenvolvimento de técnicas sustentáveis de manejo. Neste contexto, foi realizada a caracterização física, química, mineralógica, além da extração sequencial de ferro de solos tiomórficos desenvolvidos na várzea do rio Camocim, no município de Caaporã, PB. O objetivo do estudo foi identificar a ocorrência de solos tiomórficos e caracterizá-los, com o fim de obter subsídios para a tomada de decisão de incorporar estas áreas ao cultivo de cana-de-açúcar ou mantê-las nas condições naturais. Para tanto foi feito um transecto perpendicular ao canal principal do rio, a partir das terras altas, onde foram descritos e coletados quatro perfis de solo. Em campo foi realizada a caracterização morfológica dos perfis e coletadas amostras para as análises físicas, químicas e mineralógicas de rotina, além de análises específicas para determinação do enxofre total, pH de incubação, ânions solúveis, CE do extrato da pasta saturada e extração sequencial de ferro. Os solos foram classificados como Gleissolo Háplico Tb Distrófico argissólico (P1), Organossolo Tiomórfico Sáprico típico (P2) e Gleissolo Tiomórfico Órtico organossólico (P3 e P4). A distribuição dos solos na várzea do rio Camocim guarda estreita relação com o relevo, que condiciona a drenagem e, consequentemente, os processos de formação relacionados com o excesso de água. A presença de horizonte sulfúrico foi constatada a partir do horizonte superficial nos perfis muito mal drenados da planície de inundação, e a partir de 43 cm, nos solos mal drenados da ombreira. Os solos tiomórficos estudados não apresentam salinidade, sendo a alta condutividade elétrica resultante da formação de ácido sulfúrico proveniente da oxidação da pirita (H+ e SO4 2-). A degradação do canavial em grandes áreas da várzea do rio Camocim, após um ano de cultivo, foi consequência da formação do horizonte sulfúrico com a drenagem da área, tendo em vista que os materiais sulfídricos ocorrem desde a superfície. Os minerais identificados por DRX foram: jarosita, quartzo, feldspatos, caulinita, esmectita (essencialmente montmorilonita), ilita e gibbsita, na fração argila. Quartzo e feldspatos foram os minerais identificados nas frações areia e silte. Os valores da extração sequencial de ferro mostraram predomínio de formas não cristalinas de óxidos de ferro e baixíssimos teores ou ausência de ferro associado à pirita, indicando que os solos tiomórficos estudados apresentam avançado estágio de oxidação, promovido pela drenagem realizada na área de estudo na tentativa de viabilizar o cultivo da cana-de-açúcar.
Isyrini, Rantih. "The effects of geochemical conditions on the establishment and growth of mangrove seedlings in acid sulfate soil environments." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/78681/1/Rantih_Isyrini_Thesis.pdf.
Повний текст джерелаMarkström, Jimmy. "Is mercury mobilized from acid sulfate soils? : Interpreting the mercury record from lake- and marine sediments in Persöfjärden and adjacent sea bay." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-171611.
Повний текст джерелаAvenius, Joel. "Sänkta sjöars inverkan på ytvatten i Västerbottens kustland : Samband mellan sänkningsnivåer och vattenkemi i sjöar på sulfidrika sedimentjordar." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-62140.
Повний текст джерелаFLISIK (för livskraftiga småvatten i kvarkenregionen)
Eriksson, Blomberg Malin. "Sjöars inverkan på metallackumulationen i havsvikar - En undersökning av metallmobilisering från sura sulfatjordar." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-174671.
Повний текст джерелаHägglund, Emma. "Misstänkt sulfidjord i deponi vid Stöcke, Umeå." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-112707.
Повний текст джерелаMuniz, Edgard Alves. "Efeitos de gesso agrícola e corretivos de acidez do abacaxizeiro cultivado em Latossolo e Plintossolo." Universidade Federal de Goiás, 2015. http://repositorio.bc.ufg.br/tede/handle/tede/5092.
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Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq
The latosolic Concretionary Petric Plintosol is the less fertile soil in the bioma Cerrado. Making it to produce food in order to contribute to the Brazilian agribusiness, turns into a great challenge for Science. In addition to this fact, the\pineapple fruits exports are important incomes sources for our Country. For this reason, the present work aimed to assess effects of application, on soil, of calcium carbonate, calcium & magnesium carbonate and calcium sulfate, on productivity of pineapple plant (Ananas comosus L. Merril) var. Pérola cultivated in typical Distrocohesive Yellow Latosol and latosolic Concretionary Petric Plintosol on a same topossequence of Cerrado bioma. Soon after planting, it were applied on both soils, the following equivalent doses\(kg ha-1): on the latossol area – 2000, 2000 and 1000; and on the plintossol area – 3000, 3000 and 1500; of calcium carbonate, calcium & magnesium carbonate and calcium sulfate, respectively. As effects, the fruits production averages (t ha-1), in both soils were: 8,32; 12,94; 13,82; 15,09; 5,02; 12,60; 14,11; e 14,82, respectively, in the same sequence above. The essays were set up in 2010, in a region of Anápolis, Goiás State, latitude 16º19ˈ 36 ̎ S, longitude 48º57ˈ 10 ̎ W and altitude 1017 m. The yearly pluviosity average is 1.200 mm, and the temperature oscillates between 21 and 35ºC; the climate is classified as Aw according to Köppen system. The harvest was achieved in 2012. The experimental design was in randomized blocks. Each plot measured 1,20 x 6,60 m and were four the number of treatments with five replications. The three products, in the mentioned equivalent doses, induced the latosolic Concretionary Petric Plintosol studied to reach a pineapple Pérola production capacity equivalent to the typical Distrocohesive Yellow Latosol. Calcium sulfate, calcium carbonate and calcium & magnesium carbonate, individually, increased the tenor of changeable bases in the upper layers of both soils, wich made it possible to obtain greater pineapple Pérola yielding.
Plintossolo Pétrico Concrecionário latossólico é o menos fértil dos solos cerradinos. Fazê-lo produzir alimentos para contribuir com o agronegócio brasileiro, tornase um desafio para a ciência. Em adição a este fato, abacaxi é uma importante fonte de divisas para o país. Por estas razões, o presente trabalho objetivou avaliar efeitos de aplicações, no solo, de calcário calcítico, calcário dolomítico e gesso agrícola sobre a produtividade do abacaxizeiro (Ananas comosus L. Merril) var. Pérola cultivado em Latossolo Amarelo Distrocoeso típico e em Plintossolo Pétrico Concrecionário latossólico de uma mesma topossequência de bioma Cerrado. Logo após o plantio, foram aplicadas, aos dois solos, as seguintes doses equivalentes (kg ha-1): na área de latossolo – 2.000, 2.000 e 1.000; e na área de plintossolo – 3000, 3000 e 1 .500 de calcário calcítico, calcário dolomítico e gesso agrícola, respectivamente. Como efeitos, as produções médias de frutos (t ha-1), nos dois solos, foram: 8,32; 12,94; 13,82; 15,09; 5,02; 12,60; 14,11; e 14,82, na mesma ordem das doses equivalentes descritas acima. Os ensaios foram instalados em 2010, no município de Anápolis (GO), com latitude de 16º19ˈ 36 ̎ S, longitude 48º57ˈ 10 ̎ W e altitude 1017 m. A média anual de pluviosidade é de 1.200 mm e a temperatura oscila entre 21 e 35ºC; clima é classificado como Aw no sistema Köppen. A colheita realizou-se em 2012. O delineamento experimental foi em blocos ao acaso. Cada parcela mediu 1,20 x 6,60 m, e foram quatro os tratamentos de cinco repetições. Os três insumos, nas doses equivalentes mencionadas, induziram o Plintossolo Pétrico Concrecionário latossólico estudado a atingir uma capacidade de produção de abacaxi Pérola estatisticamente igual à do Latossolo Amarelo Distrocoeso típico. O gesso agrícola, o calcário dolomítico e calcário calcítico, individualmente, aumentaram os teores de bases trocáveis nas camadas mais superficiais dos dois solos, o que possibilitou a obtenção de maiores produtividades do abacaxizeiro Pérola.
Johansson, June. "Sediment chemistry and the potential toxicity to benthic invertebrates in sediments affected by acid sulfate soils : A study on freshwater and marine sediments in Västerbotten, Sweden." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-172323.
Повний текст джерелаTran, Van Van. "Burkholderia vietnamiensis sp. Nov. , une protéobactérie fixatrice d'azote de la rhizosphère du riz isolée d'un sol sulfate acide : taxonomie et effets de l'inoculation sur la croissance et le rendement du riz." Nancy 1, 1994. http://www.theses.fr/1994NAN10369.
Повний текст джерелаHAMA, PATRICIA. "Estudo da influencia da chuva acida na concentracao de aluminio em solos proximos a uma termoeletrica a carvao." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10951.
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Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
Harris, Mark Anglin. "Some organic amendments for heavy metal toxicity, acidity and soil structure in acid-sulphate mine tailings /." Title page, contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09PH/09phh3148.pdf.
Повний текст джерелаORDONIO, Iran Neves. "Propriedades de três amostras de solos da Zona da Mata de Pernambuco sob aplicação de carbonato de cálcio,carbonato de cálcio e magnésio e sulfato de cálcio." Universidade Federal Rural de Pernambuco, 2004. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5130.
Повний текст джерелаMade available in DSpace on 2016-08-01T13:16:57Z (GMT). No. of bitstreams: 1 Iran Neves Ordonio.pdf: 868102 bytes, checksum: 02c9599adf76f389980e6006cdfb959a (MD5) Previous issue date: 2004-12-29
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
Samples of the surface and B horizons of a Plintosol as well as the B horizon of a Nitosol were treated with calcium carbonate, calcium and magnesium carbonate, and calcium sulfate. The objective was to study the effects of such amendments on chemical and physical properties of the soils. The experiment was carried out in a completely randomized design with three replicates. The samples were packed into PVC columns sectioned in two 15 cm-cylinders. The amendments were applied on the upper cylinder. The lime requirement was calculated to reach 60% of base saturation while the gypsum dose was equivalent to 25% of lime requirement. Soil samples were kept incubated for 36 days. During this period, they were leached out through two pore-volumes using deionized water. The results showed that the treatments were not effective at ameliorating the soil acidic condition. There was not a significant influence of the amendments on the cation movement in the soil column as corroborated by low cation concentrations in the lower cylinder. On the other hand, calcium carbonate and its application with calcium sulphate provoked highest Ca contents in the lower cylinder. Calcium and magnesium carbonate treatments as well as their association with calcium sulphate provided the highest Mg concentrations in lower cylinders. This resultshows the role of such chemical amendments in supplying Ca and Mg to subsurfacee layers of soil. The treatments did not alter the physical soil properties. Water dispersed clay and floculation were little influenced by treatments, especially for the B horizons, which were statistically equal.
Amostras de Plintossolo horizonte Ap, Plintossolo horizonte Bt e Nitossolo horizonte B1 foram utilizadas no estudo, com o objetivo de avaliar o uso de carbonato de cálcio, carbonato de cálcio e magnésio, sulfato de cálcio e associação entre eles, investigando suas interações nas alterações químicas e físicas. O experimento foi realizado em delineamento inteiramente casualizado, com quatro repetições. As amostras de solos foram acondicionadas em colunas de PVC com 10 cm de diâmetro e 30 cm de altura, seccionados em dois cilindros de 15 cm. Nos cilindros superiores foram aplicados os corretivos. A necessidade de calagem foi calculada de modo a elevar a saturação por bases a 60 %, e a dose de sulfato de cálcio correspondente a 25 % da necessidade de calagem de cada amostra de solo. O período de incubação foi de 36 dias, durante o qual as amostras foram lixiviadas com dois volumes de poros com água deionizada, em aplicações semanais. Após esse período, procederam-se às avaliações físicas e químicas dos solos e químicas do material lixiviado. Os resultados obtidos indicaram que não houve correção de forma efetiva quando as propriedades químicas após o período de incubação. Houve pequena influência das doses aplicadas quanto à movimentação de cátions em profundidade, evidenciado pela pequena concentração de cátions no cilindro inferior. Entretanto, no cilindro inferior, maiores teores de cálcio foram relacionados aos tratamentos contendo carbonato de cálcio (CC) e sua combinação com sulfato de cálcio (CCG). Os tratamentos contendo carbonato de cálcio e magnésio (CM) e sua combinação com sulfato de cálcio (CMG), proporcionaram, por sua vez, maiores teores de magnésio nas referidas camadas. Esse fato evidencia a contribuição do carbonato de cálcio e carbonato de cálcio e magnésio no fornecimento de Ca e Mg e o efeito do sulfato de cálcio em profundidade. Os tratamentos de correção aplicados não proporcionaram diferenças nas propriedades físicas entre os cilindros. Após a aplicação dos tratamentos percebe-se um efeito pouco expressivo de argila dispersa em água e do grau de floculação, principalmente para as amostras doPlintossolo Horizonte Bt e o Nitossolo Horizonte Bt, cujas diferenças não foram significativas.
Montoroi, Jean-Pierre. "Dynamique de l'eau et géochimie des sels d'un bassin versant aménagé de Basse-Casamance (Sénégal) : conséquences sur la gestion durable de l'écosystème de mangrove en période de sécheresse." Nancy 1, 1994. http://docnum.univ-lorraine.fr/public/SCD_T_1994_0401_MONTOROI.pdf.
Повний текст джерелаBoivin, Pascal. "Caracterisation physique des sols sulfates acides da la vallee de katoure (basse casamance-senegal). Etude de la variabilite spatiale et relations avec les caracteristiques pedologiques." Paris 6, 1990. http://www.theses.fr/1990PA066045.
Повний текст джерелаDiep, Thi My Hanh. "Influence des contraintes édaphiques sur la nutrition minérale, le développement et la production du cocotier (Cocos nucifera. L. ) dans les sols sulfatés acides salés ou non salés du delta du Mekong : effet améliorant d'un apport de phosphate naturel." Paris 12, 1994. http://www.theses.fr/1994PA120047.
Повний текст джерелаMatson, Johan. "Coffee grounds as an adsorbent for heavy metals in water treatment : Study based on the environment around Vattenriket, Kristianstad." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-96299.
Повний текст джерелаTshibanda, Kabumana Dieudonne. "Contribution à la recherche d'un modèle de gestion d'un passif envronnemental issu d'un traitement métallurgique des minerais sulfurés cuivre zinc en République Démocratique du Congo." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209618.
Повний текст джерелаPar contre, les autres rejets de la filière, en l’occurrence les rejets de flottation de Kipushi et les scories de fusion pour matte de cuivre, peuvent eux être acceptés en décharge de classe I, sans traitement préalable au regard des limites fournies par la même directive. Les procédés de lixiviation acide chaude et de digestion ont été proposés et retenus comme scénarios de gestion durable à appliquer à ces rejets Ex – UZK, car ils se réalisent tous deux en milieu acide sulfurique d’une part et d’autre part leur application et surtout leur faisabilité en République Démocratique du Congo reste possible ;en outre ils aboutissent à des nouveaux rejets contenant le fer sous forme d’hématite, pouvant être stocké aisément et durablement dans la nature, ce qui est conforme au principe du développement durable. Nous avons tenté de modéliser ces deux scénarios en discutant et comparant la circulation des flux de matière dans les deux procédés, d’abord autour de chaque opération métallurgique unitaire, et ensuite sur l’ensemble du procédé. Ainsi nous avons pu chiffrer tous les flux entrant et sortant dans le système étudié, en considérant 1000 kg de rejets Ex –UZK alimentés. Cette quantification nous a permis de comparer les coûts opératoires de ces deux procédés. Les résultats obtenus dans la présente étude sont encourageants et nous ont permis de formuler des recommandations pour les études ultérieures éventuelles dont les résultats pourront l’enrichir davantage, notamment sur les aspects technologiques, économiques et environnementaux, de manière à faciliter les applications sur terrain.
This work deals with environmental liabilities consisting of base metals pollution due to metallurgical processing of copper – zinc sulphide ores in Kipushi mine in Democratic Republic of Congo. The main objective of this work was to propose sustainable management scenarios for the most important environmental liabilities from metallurgical sector. For this purpose, liabilities were first identified on four metallurgical plants. Then, leaching tests with deionized water were carried out to assess the soluble fractions of base metals. These effluents were also classified according to the test described in european decision 2003-33-EC, which determines the conformity of waste to landfill. Ex – UZK effluents are the most dangerous from this sector, according to this directive, since the quantities of leached copper and zinc were far beyond the limits :they cannot be sent to class I landfill without prior metallurgical processing. However, other effluents like flotation wast and Lubumbashi slag originating from melting for copper matte, are acceptable without prior treatment. Hot acid leaching and digestion were proposed as sustainable management scenarios for to these Ex – UZK waste because :both can be performed in sulfuric acid and they are feasible in Democratic Republic of Congo. They also lead to an iron – rich waste consisting of hematite that can be stored easily and sustainably in nature, which is consistent with the principle of sustainable development. We have modeled these two scenarios by discussing and comparing the flows in both processes, first for each individual metallurgical unit process, and then for the whole chain of value. So we could assess all the inputs and outputs of the studied system, expressed per ton of Ex – UZK waste. The operating costs of both processes were calculated and compared. The results are encouraging. Recommendations were proposed for further studies, in order to investigate more deeply the technological, economical and environmental aspects, to facilitate the final application.
Doctorat en Sciences
info:eu-repo/semantics/nonPublished
Lindquist, Thérese. "Undersökning av mängden organiskt kol i ett område med sura sulfatjordar i Kristianstads kommun." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-89373.
Повний текст джерелаIn the nature reserve Fredriksdalsviken in Kristianstad municipality, extensive metal leakage occurred after a flood in the summer of 2007 that caused damage to wildlife and plant life. The heavy metal leaks are suspected to be derived from acid sulphate soils in the area. Acid sulphate soils are among the most environmentally harmful soils in the world due to its extensive acidification and leaching of metals to the environment. In the light of humic substances key role for metal transport in natural environments, this study aimed to investigate how organic carbon is distributed, spread and how it can be explained in an area near the affected nature reserve. The study is part of an ongoing research project in the area conducted at Linnaeus University. The study area is dominated by agriculture land which is drained by a ditch system from north to south. The drained water in the ditch system is finally pumped to a wetland in the Fredriksdalsviken nature reserve. In the area, total organic carbon was analysed on soil from arable land, ditch sediment, pore water and ditch water with the methods loss of ignition and cuvette-test. Total levels were compared with pH and the groundwater level in arable land. The results and conclusions of the study are that the highest content of dissolved organic carbon in the ditch water upstream the ditch system is probably due to benthic fauna that doesn’t grow in other parts of the system. In the ditch sediment, the organic content increases downstream in the ditch system and can be explained by the supply of organic carbon from two ditches that drain arable land rich in organic carbon. In arable land are the highest levels of organic carbon due to a thin peat layer. The results does not show a clear statistical correlation between pH and total organic carbon in soil, but a sharp decrease in pH together with high total levels of organic carbon in peat soil is probably due to humic substances rather than to acid sulphate soil. In the western arable land of the ditch system, levels of total organic carbon increase laterally towards the ditch system at the same time as the pH decreases, which is probably affected by stronger binding mechanisms to minerals, lower microbial activity and reduced leaching of dissolved organic carbon. However, more research is required in the study area, since land use, erosion, soil texture and constitution together with the flow paths of water also are crucial factors for the distribution and pathways of organic carbon in natural environments.
Hagenby, John. "Sura sulfatjordar och vattenkvalitet Vattenmätningar från Vörå å 1969–2017." Thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-75741.
Повний текст джерелаAcid sulphate soils (ASS) form in sulphide bearing marine sediments that have been exposed to atmospheric oxygen caused by eustatic uplift and draining of cultivated fields. The river Vörå å, in western Finland, is a small stream that is severely affected by ASS. Finnish authorities have during decades sampled and analysed the water, but the data has not been interpreted. The objective of this study was to structure, describe and interpret previously untreated analyses data of the water samples from the years 1969 to 2017. Wa-ter quality was in general very bad and the worst situations occurred during springs and late autumns with pH <5, high sulphate concentrations and EC between 25–100 mS/m. Suspended solids and turbidity peaked in April while pH, EC, iron concentration and COD were highest during the summer. The variations in the chemical composition of the water were lowest during the spring and most widespread during the summer. At the end of the measurement period, many variables showed a slight improvement, the reason for this is unclear. Due to climate change the mean temperatures in Finland have increased, this may possibly affect the timing for snow melt in the spring and the time for flooding during the autumn. There are signs in the data indicating such changes. Metal concentra-tions from samples collected since 2005/2010 were compared with regional background values. Some metals demonstrated high concentrations.
Trueman, Austin. "Exploring the Composition, Dissolution Kinetics and Passivation of Jarosite from an Acid Sulfate Soil." Thesis, 2020. http://hdl.handle.net/2440/130120.
Повний текст джерелаThesis (MPhil) -- University of Adelaide, School of Agriculture, Food and Wine, 2020
Poolpipatana, Sunthorn. "Chemistry and mineralogy of acid sulfate soils and potential utilization of green manures as acid soil amendments." Thesis, 1994. http://hdl.handle.net/10125/9266.
Повний текст джерелаReilly, Richard John. "Nitrate reduction in agricultural acid sulfate soil." Phd thesis, 2011. http://hdl.handle.net/1885/149927.
Повний текст джерелаYuan, Chaolei. "Remediation of acid sulfate soils by organic matter addition." Thesis, 2015. http://hdl.handle.net/2440/104712.
Повний текст джерелаThesis (Ph.D.) (Research by Publication) -- University of Adelaide, School of Agriculture, Food and Wine, 2015.
Mayakaduwage, Sonia Samanthi. "Influence of pH, phosphorus addition and soil water content on phosphorus pools in acid sulfate soils." Thesis, 2020. http://hdl.handle.net/2440/128818.
Повний текст джерелаThesis (Ph.D.) -- University of Adelaide, School of Agriculture, Food and Wine, 2020
Gröger, Jens [Verfasser]. "Acid sulfate soils : processes and assessment / vorgelegt von Jens Gröger." 2010. http://d-nb.info/1011005603/34.
Повний текст джерелаChen, Huey-Shan, and 陳慧珊. "Spatial distribution of slopeland acid sulfate soils in northeastern Taiwan." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/61067130394141621168.
Повний текст джерела國立中興大學
水土保持學系所
105
Generally, grasses are the pioneer plant in disturbed area and then successes to woody plants under subtropical and high humidity climate in northeastern Taiwan. However, Rui-Fang is a mining area with abandonment coal mine. Because the mining activity from 1895 to 1990, tailings of coal mine with high sulfides is vulnerable to oxidized to sulfuric acid and then cause Acid Sulfate Soils (ASS). Therefore, vegetation growth and succession will be disturbed by ASS so the distribution of ASS can be an important index for retarding vegetation succession. In this study, the areas of grass land were delineated by imageries of SPOT and Google Earth. Furthermore, the reason of grass land distribution would be discussed with topographical factors (elevation, slope and aspect) and the distance from coal mines coupled with cluster and discrimination analysis. Finally, the verification of delineation results for ASS which is potential area of mines tailings was compared with field survey and environment geology map draught by Industrial Technology Research Institute. The results showed that the overall accuracy of grass land reached 92.8%. The higher ratio of grass land in a subdivision has, the higher discrimination accurate it is. According to the study results, the grass land could be extracted by satellite images. The potential distribution of mines tailings would be delineated by environment indices such as topographical factors and the distance from coal mines coupled with statistical analysis in order to avoid secondary use of mines tailings.
Kinsela, Andrew Stephen School of Biological Earth & Environmental Sciences UNSW. "Volatile sulfur compounds in coastal acid sulfate soils, northern N.S.W." 2007. http://handle.unsw.edu.au/1959.4/40889.
Повний текст джерелаBroughton, John D. "Element behaviour in inundated actual acid sulfate soils, East Trinity, Cairns." Thesis, 2008. https://researchonline.jcu.edu.au/2126/1/01front.pdf.
Повний текст джерелаD{u00FC}rr, Mira. "Biogeochemistry of acid sulfate soils : an investigation of the molecular characteristics of the bacterial and archaeal community." Phd thesis, 2008. http://hdl.handle.net/1885/150961.
Повний текст джерела