Log in

Relevant bibliographies by topics / Acid sulfate soils / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Acid sulfate soils.

Dissertations / Theses on the topic 'Acid sulfate soils'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Acid sulfate soils.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

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.

Full text

Abstract:

Ce projet de thèse vise à étudier les processus géochimiques de l'aluminium dans les sols acides à sulfates. Les résultats obtenus avec le dispositif de dialyse de Donnan montrent que l'aluminium dans la solution du sol est presque exclusivement (> 98%) présent sous forme de complexes de charge négative, vraisemblablement des organo-complexes d'aluminium. Les concentrations d'aluminium isotopiquement échangeables (valeurs-E) et les concentrations obtenues par extractions chimiques révèlent qu'une solution de 1 M KCl sous-estime systématiquement les valeurs E. Une méthode d'extraction séquen

APA, Harvard, Vancouver, ISO, and other styles

2

Reynolds, 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.

Full text

Abstract:

Exposure of sulfidic sediments to atmospheric conditions can under various environmental and anthropogenic influences. The oxidation of sulfides results in the production of acidity, dissolution of aluminosilicates and pedogenci development. This process has acid sulfate landscapes throughout the world identified as major emitters of elevated concentrations of chemical metals. This emission of acidity and metals alters the bioaccessibility and subsequently has a deleterious impact on the surrounding biologic environment. Despite this, the examination of the biologic impact in these landscapes

APA, Harvard, Vancouver, ISO, and other styles

3

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.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Gunnarsson, 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.

Full text

Abstract:

Marine sulfide – bearing sediments that oxidize when in contact with oxygen and leach outelements in high concentrations to small watercourses have been a problem for many years allover the world especially around the Bothnian Bay. The purpose of this study was to furtherinvestigate the sulfur mineralogy present in acid sulfate soils in the area of Luleå, Sweden. Asecondary aim was to see if elements leach out and accumulate in an acid sulfate soil closer tothe recipient. Samples were taken in two profiles (one oxidized and one waterlogged) fromfour sites (sites A-D) and were analyzed for whol

APA, Harvard, Vancouver, ISO, and other styles

5

Mustafa, Akhmad Biological Earth &amp 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.

Full text

Abstract:

Brackish water aquaculture is one of the largest coastal industries in Indonesia. This farming system involves the construction of ponds m coastal sediments. Many ponds in Indonesia have been abandoned due to past development of ponds in acid 8ulfate soils (ASS); these soils produce sulfuric acid through the oxidation of pyrite du ring and after the sediments have been excavated. The soils also contain elevated concentrations of metal such as iron and aluminium which are harmful to farmed fish and shrimp. Acidification of pond soil causes recurrent fish and shrimp mortalities, poor growth rate

APA, Harvard, Vancouver, ISO, and other styles

6

Nguyen, 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.

Full text

Abstract:

The study employed multi-variate methods to generate vulnerability maps for acid sulfate soils (AS) in the Norrbotten county of Sweden. In this study, the relationships between the reclassified datasets and each biogeochemical element was carefully evaluated with ANOVA Kruskal Wallis and PLS analysis. The sta-tistical results of ANOVA Kruskall-Wallis provided us a useful knowledge of the relationships of the preliminary vulnerability ranks in the classified datasets ver-sus the amount of each biogeochemical element. Then, the statistical knowledge and expert knowledge were used to generate the

APA, Harvard, Vancouver, ISO, and other styles

7

Diallo, Ndeye Helene. "Improved Management of Acid Sulfate Soils for Rice Production in Casamance, Senegal." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81697.

Full text

Abstract:

Casamance is a region in southern Senegal that traditionally produces rainfed rice, but Senegal produces only 1/3 of its rice consumption. Lowland areas, where rice is primarily produced, have acid sulfate soils with low pH and potential aluminum and iron toxicity. The goal of this work was to determine if soil amendments can alleviate soil acidity, counteract the negative biogeochemical effects that occur in flooded conditions, and increase rice yield. A two-year experiment was conducted to test the following soil treatments – agricultural lime, pulverized oyster shell, biochar, and control (

APA, Harvard, Vancouver, ISO, and other styles

8

Bryson, 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.

Full text

Abstract:

Thesis (M.S.)--West Virginia University, 2006.<br>Title 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).

APA, Harvard, Vancouver, ISO, and other styles

9

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.

Full text

Abstract:

The reaction of sulfate with six podzolic horizons of the Southern Laurentians (Quebec) was investigated using batch reaction techniques. It was demonstrated that sulfate sorption increased with decreasing solution pH to a maximum sorption capacity at around pH 4.0; below this pH retention decreased. This drop in sorption capacity was related to the partial dissolution of Al surface coatings. Indeed, the amount of native sulfate and the maximum sorption during the experiment were positively correlated (R$ sp2$ = 0.982, 0.800) with the oxalate extractable Al content of these forested soils. In

APA, Harvard, Vancouver, ISO, and other styles

10

Lindström, 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.

Full text

Abstract:

Global environmental concerns arise when marine deposits with fine-grained iron sulfide-rich sediments (FeS and FeS2), now situated above sea level, oxidize from anthropogenic lowering of the groundwater table. The oxidation of iron sulfides decreases the soil pH and the acidic environment of these Acid Sulfate Soils (AS) soils increase weathering and mobilization of metals into adjacent watercourses, lakes and estuaries. Low pH and enhanced concentrations of metals are known to influence water quality negatively, causing fish kills and reduced aquatic diversity. Sulfide rich sediments were de

APA, Harvard, Vancouver, ISO, and other styles

11

McBroom, 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.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Morgan, 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.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

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.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Kozhukhar, 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.

Full text

Abstract:

1. В. Бузило, А. Павличенко, С. Кулина, В. Кіященко. Шляхи забезпечення екологічної безпеки при ліквідації вуглевидобувних підприємств. Розробка родовищ. 2013. С. 437-440. 2. Costa M.-C., Duarte J.-C. Bioremediation of acid mine drainage using acidic soil and organic wastes for promoting sulphate-reducing bacteria activity on a column reactor. Water, Air, and Soil Pollution. 2005. Vol. 165. P. 325-345. 3. Bhupinder D. Biotechnological Tools for Remediation of Acid Mine Drainage. Bio-Geotechnologies for Mine Site Rehabilitation / eds. MNV Prasad Paulo Jorge de Campos Favas Subodh Kumar Maiti.

APA, Harvard, Vancouver, ISO, and other styles

15

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.

Full text

Abstract:

<p> Northwestern 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 is

APA, Harvard, Vancouver, ISO, and other styles

16

Job, Thomas Anthony. "A systemic investigation of coastal acid sulfate soil acidification in the River Murray Estuary, South Australia." Thesis, University of Sydney, 2020. https://hdl.handle.net/2123/23474.

Full text

Abstract:

Extensive coastal acid sulfate soil (CASS) oxidation was observed in the River Murray Estuary (RME), South Australia, during an extreme drought (the Millennium Drought, 1996–2010). CASS oxidation causes significant surface water and porewater acidity, and the mobilisation of toxicants, negatively impacting proximal ecosystems and infrastructure. In this thesis I argue that the Millennium Drought acidification event provides a test case globally for how meteorological drought triggers extreme CASS oxidation, and how other variables can exacerbate the issue. I therefore present a systemic invest

APA, Harvard, Vancouver, ISO, and other styles

17

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.

Full text

Abstract:

The primary soil limitations to crop yield in the Senegalese "Peanut Basin" include salinity, acidity, and fertility. Crop yield may be increased by use of soil amendments and salt-tolerant cultivars. Objectives of this research were to evaluate salt tolerance of various millet (Pennisetum glaucum (L.) R.Br.) cultivars and compare effects of soil amendments on millet growth and yield in greenhouse and field studies. The research included two greenhouse experiments (i) comparing the salt tolerance of seven pearl millet cultivars (IBMV 8402, SOSAT C88, ICMV-IS 88102, IKMP1, IKMP2, IKMV 8201 and

APA, Harvard, Vancouver, ISO, and other styles

18

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.

Full text

Abstract:

This thesis describes the use of different DNA sequencing technologies to investigate the structure and function of microbial communities in two extreme environments, boreal acid sulfate soil and the terrestrial deep biosphere. The first of the two investigated environments was soils containing un-oxidized metal sulfides that are termed ‘potential acid sulfate soil’ (PASS) materials. If these materials are exposed to atmospheric oxygen by either natural phenomena (e.g., land uplift) or human activities (e.g., drainage) then the metal sulfides become oxidized and the PASS becomes acidic and is

APA, Harvard, Vancouver, ISO, and other styles

19

Groves, Sarah Anne Biological Earth &amp 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.

Full text

Abstract:

Many brackish water aquaculture ventures in Australia and overseas have established ponds in coastal regions with acid sulfate soils (ASS). Acid sulphate soils are known to leach relatively high concentrations of metals, acid (metal and H+ ion) and sulfur, however very little is known about how these leached elements affect the water quality of aquaculture ponds. The main objective of this thesis was to describe the hydrochemical processes controlling the water chemistry in the water column and sediment pore water in the studied aquaculture ponds over time and space. Water samples providing th

APA, Harvard, Vancouver, ISO, and other styles

20

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.

Full text

Abstract:

Acid sulfate soils (ASS) is a stress factor that is responsible for the failure of some mangrove restoration projects, including abandoned aquaculture ponds converted from mangrove ecosystems. Through experimental and field studies, this research provides a better understanding of the biogeochemistry of ASS disturbance and the response of mangrove seedlings (Rhizophoraceae) under high metal levels and acidic conditions. This study found that mangrove restorations under ASS disturbance can work but with lower numbers of survived seedlings. To prevent toxicity under high levels of metal, seed

APA, Harvard, Vancouver, ISO, and other styles

21

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.

Full text

Abstract:

Acid Sulfate soils (AS) are recognized for being a source of acidity in freshwaters in America, Europe, Australia, and Asia. Apart from the problematic acid leachate, AS soil serves as a possible source of toxic heavy metals in freshwaters, a problem which has received far less attention than problems related to acid leachate. This study assessed to what extent heavy metals enriched in sediments from the area around lake Persöfjärden (North-eastern Sweden) could be attributed to export from AS soils. I found that: i) Nickel (Ni), Zink (Zn), Copper (Cu) and Iron (Fe) in the sediments had a part

APA, Harvard, Vancouver, ISO, and other styles

22

Markström, 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.

Full text

Abstract:

Acid sulfate (AS) soils are characterized by a large pool of sulfates which may provide significant amounts of acidity and heavy metals – commonly nickel (Ni), Cobolt (Co), Zinc (Zn) and Arsenic (As) - to surrounding surface waters. The occurrence of AS soils is widespread, covering 17 million ha globally, and they are known for threatening freshwaters in Australia, North America as well as in many tropical regions. Mobilization of mercury (Hg) from AS soils is however poorly studied and could potentially be an environmental problem of concern due to its toxicity and capacity of bioaccumulatin

APA, Harvard, Vancouver, ISO, and other styles

23

MENDONÇA, 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.

Full text

Abstract:

Submitted by (lucia.rodrigues@ufrpe.br) on 2016-08-16T14:23:12Z No. of bitstreams: 1 Suzana Kelley Gomes de Mendonca.pdf: 1457356 bytes, checksum: 55d06ce86944cd3f69644577e424587d (MD5)<br>Made available in DSpace on 2016-08-16T14:23:13Z (GMT). No. of bitstreams: 1 Suzana Kelley Gomes de Mendonca.pdf: 1457356 bytes, checksum: 55d06ce86944cd3f69644577e424587d (MD5) Previous issue date: 2011-02-25<br>Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq<br>Low lands in Brazil have a great potential for agriculture, however, they have some limitations due to the pres

APA, Harvard, Vancouver, ISO, and other styles

24

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.

Full text

Abstract:

The leakages of metals from acid sulfate soils and their potential toxicity to benthic invertebrates were studied in the sediment profiles of Lillkvasjön and Lövselefjärden - a lake and an estuary known to be affected by acid sulfate soils - in Västerbotten, northern Sweden. The concentrations of 25 different elements were analyzed throughout both sediment profiles through X-Ray Fluorescence (XRF) Spectrometer analysis. Organic matter was measured through loss-on-ignition (LOI). By performing correlation analysis and normalizations to LOI on all sediment variables, Cu, Fe, Ni, Pb, S and Zn wer

APA, Harvard, Vancouver, ISO, and other styles

25

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.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

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.

Full text

Abstract:

Two soils from the Fernow Experimental Forest near Parsons, West Virginia were characterized and evaluated in terms of their susceptibility to enhanced soil acidification via acidic atmospheric inputs. After initial physical, chemical, and mineralogical characterization, the soils were analyzed for their ability to adsorb and retain sulfate (SO42-) through a series of batch adsorption and desorption experiments. Reconstructed soil profiles were then subjected to water leaching as the preliminary step to a base release study in which each soil will be placed under simulated acid rain and eval

APA, Harvard, Vancouver, ISO, and other styles

27

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.

Full text

Abstract:

La restauration des sols forestiers acides et leur dynamique sont abordées par l'étude des effets des formes et quantités d'amendements apportés, en interaction avec la qualité de l'humus. Le caco#3, caco#3+mgo et caso#4 sont apportés en surface avec des doses de 0, 0. 56, 2. 8 et 5. 6 t/ha équivalent cao et les principaux résultats sont: le sol: la valeur du ph du sol est augmentée de 4 unités ph dans les couches de surface (a#1) et d'une unité ph en moyenne en profondeur (b) avec les amendements carbonates. La restauration a été rapide (moins de 7 mois) dans les premiers centimètres du sol a

APA, Harvard, Vancouver, ISO, and other styles

28

Avenius, 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.

Full text

Abstract:

Lake lowering in sulphide-rich areas is currently a major environmental impact for surface water. This study focuses on whether there is a relationship between a gradient of lake lowering and surface water impacts in areas of sulphide-rich sediments, in order to better understand their contribution of heavy metals and sulfuric acid. Also, is it a reasonable method to use the reduced lake area in order to quantify the gradient? The survey was conducted by collecting water samples from reference lakes and lowered lakes from south to north in coastal areas within the county of Västerbotten. Water

APA, Harvard, Vancouver, ISO, and other styles

29

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.

Full text

Abstract:

Acid sulfate soils covers an area area about 600 km-2 along the coast line of Northern Sweden. These soils originate from land uplift and oxidized sulfide soils. The oxidation process releases sulfur and Fe(III) and will lower the pH-value and mobilize metals that will cause toxic environments for water living organisms. Concerns of how higher occurrence of extreme weather conditions will affect the mobilization of metals has occurred. Understanding of the mobilizations of metals in different catchment conditions is therefore important knowledge for preparation of risk analyzes to protect ecos

APA, Harvard, Vancouver, ISO, and other styles

30

Hägglund, 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.

Full text

Abstract:

In the north of Sweden lots of the soil is naturally contaminated by acid sulfate. When soil gets in contact with oxygen an oxidation process begins which releases elements that may be harmful to the surroundings. When the Botniabanan was built, soil had to be transported from the railroad area to deposit sites. This study was made to investigate the suspicions a landowner had regarding if his estate had been contaminated sulphide soil soil during the building of the Botniabanan. To do that four pits were dug in the area where the soil had been deposited. Then the soil was analyzed to see the

APA, Harvard, Vancouver, ISO, and other styles

31

Tran, 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.

Full text

Abstract:

Douze souches, parmi les plus abondantes dans la population des bactéries fixatrices d'azote, ont été isolées à l'aide du modèle spermosphère, de la rhizosphère du riz cultive sur un sol sulfate acide vietnamien. Les critères phénotypiques montrent que les souches appartiennent au genre burkholderia. L'absence de fixateurs d'azote dans ce genre a conduit à l'utilisation d'une approche polyphasique intégrant les hybridations ADN:ARNR, ADN:ADN, / et l'analyse auxanographique. Cette approche a permis de distinguer ces souches des espèces b. Cepacia et b. Gladioli et a conduit à la création d'une

APA, Harvard, Vancouver, ISO, and other styles

32

HAMA, 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.

Full text

Abstract:

Made available in DSpace on 2014-10-09T12:46:00Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:04:46Z (GMT). No. of bitstreams: 1 07316.pdf: 5554844 bytes, checksum: f2a2161155dc5992abc29a9496405892 (MD5)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

APA, Harvard, Vancouver, ISO, and other styles

33

Matson, 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.

Full text

Abstract:

One of the modern times worst environmental problem are polluted water resources. An example of source of pollution to water resources are, heavy metal leached from acid sulfate soils (ASS). When these soils are stable, which they are if they are left underwater in an anoxic environment (for example below the water table), they are often sought after since they consist of high amount of nutrients which farmers use as farmlands. ASS is therefore created when farmers drain their land and the sulfide soil gets exposed to air, resulting in its oxidation and therefore formation of sulfuric acid. In

APA, Harvard, Vancouver, ISO, and other styles

34

Tshibanda, 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.

Full text

Abstract:

Ce travail traite d’un problème de pollution liée à la présence de métaux de base dans des passifs environnementaux issus d’un traitement métallurgique des minerais sulfureux cuivre – zinc provenant de la mine de Kipushi en République Démocratique du Congo. L’objectif principal de ce travail a été d’arriver à proposer des scénarios de gestion durable au passif environnemental de la filière présentant les risques environnementaux les plus élevés. Pour cela, on a d’abord procédé à une identification des différents problèmes environnementaux tout au long de la filière de traitement sur les quatre

APA, Harvard, Vancouver, ISO, and other styles

35

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.

Full text

Abstract:

I Fredriksdalsvikens naturreservat i Kristianstads kommun skedde omfattande metalläckage efter en översvämning sommaren 2007 som orsakade skador på djur- och växtliv. De kraftiga metalläckagen misstänks härledas till sura sulfatjordar. Sura sulfatjordar tillhör de miljöskadligaste jordarna i världen på grund av de kraftiga metalläckagen och försurningen som jordarna orsakar till omgivningen. Mot bakgrund till humusämnens centrala roll för metalltransport i naturliga miljöer, syftade denna studie till att kartlägga hur organiskt kol är fördelat, sprids samt hur det kan förklaras i ett område nä

APA, Harvard, Vancouver, ISO, and other styles

36

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.

Full text

Abstract:

Sura sulfatjordar (SSJ) bildas på tidigare havsbottnar med sulfidhaltiga sediment som med landhöjningen har lyfts upp ur havet och genom grundvattensänkande aktiviteter exponerats för syre. Vörå å är ett vattendrag i västra Finland som är kraftigt SSJ-påverkat. Närings-, trafik- och miljöcentralen i Österbotten har gjort vattenmätningar i Vörå å i flera decennier och syftet med detta arbete var att strukturera, beskriva och tolka tidigare obehandlade data från vattenmätningar som gjorts mellan 1969 och 2017 och därmed synliggöra årstidsvariationer och förändringar i vattnets kemiska sammansä

APA, Harvard, Vancouver, ISO, and other styles

37

Reilly, Richard John. "Nitrate reduction in agricultural acid sulfate soil." Phd thesis, 2011. http://hdl.handle.net/1885/149927.

Full text

Abstract:

A significant proportion of Australia's sugarcane crop is grown on east-coast estuarine floodplains underlain by pyritic gel-clay subsoils. At the current study site these agricultural acid sulfate soils are typically characterised by a topsoil horizon of river alluvium, a subsoil of oxidised actual acid sulfate soil (AASS), a zone of partially oxidised AASS and a deep sulfidic horizon of pyritic potential acid sulfate soil (PASS). Addition of nitrogenous fertiliser at key points in the sugarcane cropping cycle can create soil nitrogen levels in excess of immediate soil flora/fauna and crop re

APA, Harvard, Vancouver, ISO, and other styles

38

Yuan, Chaolei. "Remediation of acid sulfate soils by organic matter addition." Thesis, 2015. http://hdl.handle.net/2440/104712.

Full text

Abstract:

Acid sulfate soils (ASS) are soils containing iron sulfide minerals (predominantly pyrite) and/or their oxidation products. ASS have a large distribution in the world (10⁷−10⁸ ha coastal ASS) and in Australia (215,000 km²). Sulfide in ASS is formed from sulfate in sea water or fresh water under anaerobic conditions by sulfate-reducing bacteria, which need organic matter (OM) as the energy source. Sulfide then reacts with dissolved Fe(II) to form pyrite. Sulfuric material (containing sulfuric acid) is formed during oxidation of ASS with sulfidic material (containing sulfide minerals), resulting

APA, Harvard, Vancouver, ISO, and other styles

39

Gröger, Jens [Verfasser]. "Acid sulfate soils : processes and assessment / vorgelegt von Jens Gröger." 2010. http://d-nb.info/1011005603/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Chen, 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.

Full text

Abstract:

碩士<br>國立中興大學<br>水土保持學系所<br>105<br>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 st

APA, Harvard, Vancouver, ISO, and other styles

41

Kinsela, Andrew Stephen School of Biological Earth &amp Environmental Sciences UNSW. "Volatile sulfur compounds in coastal acid sulfate soils, northern N.S.W." 2007. http://handle.unsw.edu.au/1959.4/40889.

Full text

Abstract:

The cycling of biogenic volatile sulfur compounds (VSCs) within marine and terrestrial ecosystems has been shown to play an integral role in atmospheric chemistry; by influencing global climate change through the creation of cloud condensation nuclei and controlling acid-base chemistry; as well as influencing sediment chemistry including the interactions with trace metals, particularly regarding iron sulfide formation. Despite this, the examination of VSCs within Australian coastal acid sulfate soils (ASS) is an unexplored area of research. As ASS in Australia occupy an area in excess of 9 M h

APA, Harvard, Vancouver, ISO, and other styles

42

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.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Broughton, John D. "Element behaviour in inundated actual acid sulfate soils, East Trinity, Cairns." Thesis, 2008. https://researchonline.jcu.edu.au/2126/1/01front.pdf.

Full text

Abstract:

Actual Acid Sulfate Soils (AASS) undergoing inundation with seawater were examined for: 1) element distributions; 2) element mobilisation during seawater inundation; 3) the fate of elements mobilised during inundation; and 4) element phytoavailability. Seawater inundation is a potential method of ameliorating the acidic soil conditions and on-going release of elements in toxic concentrations frequently associated with AASS. The key research question to be answered by the study was: What are the effects of seawater inundation on the distribution, hosting, fate and phytoavailability of

APA, Harvard, Vancouver, ISO, and other styles

44

Heath, Lance. "An integrated approach to the remediation and management of coastal acid sulfate soils." Phd thesis, 2004. http://hdl.handle.net/1885/146393.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

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.

Full text

Abstract:

Acid sulfate soils (ASS) are common in wetlands and important for crop production. However, little is known about P availability in ASS which is constrained due to high Fe content and changing redox potential. This thesis aimed to investigate the effect of P addition, pH and soil water content on P pools in ASS. A sandy sulfuric ASS (pH 3.2) was used in the experiments. In the first experiment, the ASS was amended with NaOH or Ca(OH)2) to achieve soil pH 4 or 5.5, without or with addition of inorganic P equivalent to 20 kg ha−1. Soils were incubated in either submerged or moist conditions (100

APA, Harvard, Vancouver, ISO, and other styles

46

Baker, Andrew K. M. "New approaches to investigate and construct biogeochemical models of inland acid sulfate soils: linkages to environmental degradation processes and mineral exploration." 2007. http://hdl.handle.net/2440/57109.

Full text

Abstract:

Title page, contents and abstract only. The complete thesis in print form is available from the University of Adelaide Library.<br>"Inland acidic sulfate soils under fresh water conditions where contemporary clearning of native vegetation has caused erosion, rising of local water tables and excess discharge of saline-sulfatic groundwater. A new systematic and interactive web-based approach was used to improve acquisition, collation, integration and communication of diverse soil-regolith data ... Successful application of the interactive web-based data site, as part of this study, resulted in i

APA, Harvard, Vancouver, ISO, and other styles

47

Baker, Andrew Kenneth Martin. "New approaches to investigate and construct biogeochemical models of inland acid sulfate soils: linkages to environmental degradation processes and mineral exploration." Thesis, 2007. http://hdl.handle.net/2440/57109.

Full text

Abstract:

"Inland acidic sulfate soils under fresh water conditions where contemporary clearning of native vegetation has caused erosion, rising of local water tables and excess discharge of saline-sulfatic groundwater. A new systematic and interactive web-based approach was used to improve acquisition, collation, integration and communication of diverse soil-regolith data ... Successful application of the interactive web-based data site, as part of this study, resulted in its uptake as a standard tool for coordinating and reporting on a number of current and future national and international soil-regol

APA, Harvard, Vancouver, ISO, and other styles

48

D{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.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Trueman, Austin. "Exploring the Composition, Dissolution Kinetics and Passivation of Jarosite from an Acid Sulfate Soil." Thesis, 2020. http://hdl.handle.net/2440/130120.

Full text

Abstract:

Jarosite minerals (XFe(SO4)2(OH)6, where X is typically K or Na) are common secondary reaction products of iron sulfide oxidation. Consequently, jarosite is a diagnostic feature of sulfuric material (pH < 4) in acid sulfate soils (ASS), where it constitutes the principal source of retained acidity: an operationally defined pool of potential acidity associated with the hydrolysis of Al3+ and Fe3+ from minerals such as jarosite and schwertmannite. Soils containing considerable quantities of jarosite tend to exhibit hazardous properties (e.g. acidic and metalliferous drainage) for years to decade

APA, Harvard, Vancouver, ISO, and other styles

50

Miller, Karen S. "Jarosite Formation at the Davis Mine, Rowe, Massachusetts." 2011. https://scholarworks.umass.edu/theses/700.

Full text

Abstract:

This study investigates jarosite formation and stability patterns at the abandoned Davis Pyrite Mine in Rowe, Massachusetts. Jarosite, an iron-sulfate hydroxide, is found in acid mine drainage (AMD) environments, in acid sulfate soils, and on Mars. Jarosite and the iron oxides goethite and hematite are present at the site. Soil samples from the site were examined by XRD, SEM, and EDS. Five mineralogical areas were found, based on mineral abundance patterns. Jarosite exists in four of these areas. Two jarosite morphologies were identified. “Variable” jarosite, with partly-dissolved crystals of

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!