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4 edition of Plant material as substrate for sulphate reduction in acid mine drainage treatment found in the catalog.

Plant material as substrate for sulphate reduction in acid mine drainage treatment

Punyapriya Patel

Plant material as substrate for sulphate reduction in acid mine drainage treatment

by Punyapriya Patel

  • 288 Want to read
  • 16 Currently reading

Published by National Library of Canada in Ottawa .
Written in English


Edition Notes

Thesis (M.A.Sc.) -- University of Toronto, 1998.

SeriesCanadian theses = -- Thèses canadiennes
The Physical Object
FormatMicroform
Pagination2 microfiches : negative. --
ID Numbers
Open LibraryOL19887675M
ISBN 100612542130
OCLC/WorldCa50790165

A three-step process for the treatment of acid mine drainage (AMD), proposed earlier, separates sulphate reducing activity from metal precipitation units and from a pH control system. Following our earlier work on the first step (biological reactor), this paper examines the . sulphate-reducing bacteria (SRB) to treat acid mine drainage (AMD), in a pit or an underground mine. Following an initial study conducted in batch flasks that determined major process parameters (residence time, temperature effect, nutrients and substrate requirements), a conceptual flow .

During coal and iron mining, pyrite is often exposed to oxygen, causing acid mine drainage (AMD). Acid mine drainage has characteristic traits of: a rust color, low pH levels (around 3 or 4) and high concentrations of sulfate, metal sulfates and heavy metals. Sulfate reducing bacteria (SRB) are often utilized in acid mine drainage treatment. Wood dust and typical solid waste materials were shown to support sulfate reduction, but maintenance of sulfate reduction in AMD solutions was limited. In addition to wood dust and solid waste materials, sponge substrates were used to "package" the microbial community in portable units which could be added to AMD impoundments.

@article{osti_, title = {Sulfate reduction in freshwater wetland soils and the effects of sulfate and substrate loading}, author = {Feng, J and Hsieh, Y P}, abstractNote = {Elevated sulfate and organic C loadings in freshwater wetlands could stimulate dissimilatory sulfate reduction that oxidizes organic C, produces hydrogen sulfide and alkalinity, and sequesters trace metals. Bioremediation of Acid Mine Drainage Using Sulfate-Reducing Bacteria LIST OF FIGURES Figure 1. Microbial processes that can impact sulfate-reduction in an organic carbon substrate. Reprinted pg 5 Figure 2. Diagram of possible passive treatment systems to treat mine .


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Plant material as substrate for sulphate reduction in acid mine drainage treatment by Punyapriya Patel Download PDF EPUB FB2

Acidophilic sulphate-reducing bacteria: candidates for bioremediation of acid mine drainage. Process Metallurgy 9 – /S(99)X [Google Scholar] Sheoran A., Sheoran V., Choudhary R.

Bioremediation of acid-rock drainage by sulphate-reducing prokaryotes: a by:   Acid mine drainage (AMD), which contains high concentrations of sulphate and dissolved metals, is a serious environmental problem.

It can be treated in situ by sulphate reducing bacteria (SRB), but effectiveness of the treatment process depends on the organic substrate chosen to supply the bacteria’s carbon by:   I. Chang, P. Shin, B. KimBiological treatment of acid mine drainage under sulphate-reducing conditions with solid waste materials as substrate Water Res., 34 Cited by: Acid Mine Drainage (AMD) waters pose a significant environmental threat to the quality of surface and underground water resources.

This paper describes a novel system for the biological sulphate reduction (BSR) of acid mine drainage using primary sewage sludge (PSS) as carbon source in an upflow anaerobic sludge bed (UASB) reactor. Biological treatment of acid mine drainage under sulfate-reducing conditions with solid waste materials as substrate Article in Water Research 34(4) March with 78 Reads.

Novel immobilized sulfate-reducing bacteria (SRB) beads were prepared for the treatment of synthetic acid mine drainage (AMD) containing high concentrations of Fe, Cu, Cd and Zn using up-flow. MICROBIAL SULFATE REDUCTION FOR THE TREATMENT OF ACID MINE DRAINAGE: A LABORATORY STUDY R.

Hammack and R. Hedin Pittsburgh Research Center U.S. Bureau of Mines U.S. Department of the Interior Pittsburgh, PA ABSTRACT A laboratory study was conducted to determine if sulfate‐reducing ecosystems can effectively.

Other compost materials include peat moss, wood chips, sawdust or hay. A typical compost wetland will have 12 to 24 inches of organic substrate and be planted with cattails or other emergent vegetation.

The vegetation helps stabilize the substrate and provides additional organic materials to perpetuate the sulfate reduction reactions. Toward a Solution for Acid Mine Drainage Treatment: Role of Electron Donors in Sulfate Reduction at Low pH.

Geomicrobiology Journal: Vol. 36, No. 9, pp. When appropriately designed and maintained, passive systems can provide long-term, efficient, and effective treatment for many acid mine drainage (AMD) sources. Passive AMD treatment relies on natural processes to neutralize acidity and to oxidize or reduce and precipitate metal contaminants.

Passive treatment is most suitable for small to moderate AMD discharges of. Acid mine drainage (AMD) has been considered one of the industries toughest problems to solve.

Most water remediation techniques are timely and costly, and AMD can continue over a period of many years, therefore requiring treatment of AMD to continue until well after the. An experimental wetland was designed and built in Pennsylvania, USA, to maximize contact between mine drainage and the anaerobic zone of the organic substrate, where sulfate reduction takes place.

Preliminary results show that iron concn decreased from to 27 ppm, pH increased from toand alkalinity increased from 0 to ppm when the mine drainage was forced through the. Over the past three years, Noranda Technology Centre (NTC) has evaluated the feasibility of using sulphate-reducing bacteria (SRB) to treat acid mine drainage (AMO), in a pit or an underground mine.

Following an initial study conducted in batch flasks that determined major process parameters (residence time, temperature effect, nutrients and substrate requirements), a conceptual flow sheet was. Objective: To develop an in-mine water treatment system in which bacterial sulfate reduction and limestone dissolution continuously remove metals and acidity from contaminated drainage.

Approach: A section of mine tunnel was converted into a water treatment bioreactor by constructing cinder block dams and filling the area between them with a porous substrate mixture of limestone gravel and.

Since mine waters a and b have a positive record of biological treatment, they were selected to evaluate the effect of fine organic mixtures and acid drainage composition on sulfate reduction, whereas mine water c, deemed considerably more toxic, was selected to determine the feasibility of treating AMD containing high copper concentrations.

Keywords: acid mine drainage, sulfate removal, water treatment technologies. Are We Making Progress In The Treatment of Acid Mine Drainage. Roxanne Naidoo, Kerri du Preez, Yageshni Govender-Ragubeer Mintek, Malibongwe Drive, Randburg, Gauteng, A Introduction Acid Mine Drainage (AMD) is produced when sul˚ de-bearing material is exposed.

Acid mine drainage (AMD), water draining active and, in particular, abandoned mines is largely acid Materials and Methods Mine water SRB genera Desulfovibrio cannot utilize acetate as growth substrate [5].

Bacterial sulphate reduction was stopped at the influence of suitable organic substrate absence. 0 Sulfate is a pollutant present in the mining waste water and acid mine drainage.

High levels of sulfate can generate important environmental problems. One of the alternatives proposed for the treatment of water with high levels of sulfate is the use of sulfate-reducing microorganisms. This work describes the synergistic combination of a treatment system for the removal of metals by biosorption.

Riekkola-Vanhanen M, Mustikkamäki UP () In situ treatment of acid mine drainage by sulphate reducing bacteria in an open pit mine. In: Proceedings of biomine international conference, Sydney, Australia, pp E-ROME-ROM Google Scholar.

Passive biochemical reactors (PBRs) are a viable alternative to neutralization plants for the treatment of acid mine drainage (AMD) because they require lower investment costs and use residual materials.

However, high iron (Fe) concentrations (≥ g/L) in AMD are challenging for their long-term efficiency. Abstract - Biological acid mine drainage treatment depends significantly on inoculum origin, pH, COD/sulfate ratio, and carbon source.

In this study, the performance and microbial diversity of anaerobic batch reactors used for sulfate reduction was evaluated.

A medium COD/sulfate ratio of ± was used, and the evaluation was.Research was conducted to evaluate methods for the biological treatment of acid mine drainage (AMD). Two general approaches were evaluated. The first evaluated treatment of impounded AMD through the addition of a mixed microbial community and carbon sources appropriate for their maintenance.

This approach was designed to promote sulfate reduction.Featuring contributions from leading experts in science and engineering, this book explores the complex biogeochemistry of acid mine drainage, rock drainage, and acid sulfate soils.

It describes how to predict, prevent, and remediate the environmental impact of acid drainage and the oxidation of sulfides, offering the latest sampling and.