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Showing 1 to 11 of 11 for “"Biological sulphate reduction"”.
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The development of a kinetic model for biological sulphate reduction with primary sewage sludge as substrate
Central to this process is biological sulphate reduction (BSR) using primary sewage sludge (PSS) as the electron donor and organic carbon source, with the concomitant reduction of sulphate to sulphide and production of carbonate alkalinity. To optimise the design, operation and control of BSR with …
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Optimisation of a linear flow channel reactor for semi-passive, simultaneous biological sulphate reduction and partial sulphide oxidation
… activities and typically has high levels of sulphate and heavy metals, at acidic pH. Similarly, high sulphate neutral rock drainage is of increasing concern. High sulphate content increases water salinity leading to adverse effects on human health as well as agriculture. Types of ARD and …
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An investigation into the relationship between process kinetics and microbial community dynamics in a lactate-fed sulphidogenic CSTR as a function of residence time and sulphate loading
The treatment of acid mine drainage and other sulphate-laden wastewaters usingbiological sulphate reduction technology has been shown to offer several advantages.This process effectively removes the following toxicants: sulphate, heavy metals andacidity. Previous studies have also revealed that the …
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A novel semi-passive process for sulphate removal and elemental sulphur recovery centred on a hybrid linear flow channel reactor
… These semi-passive systems typically target sulphate salinity through biological sulphate reduction catalysed by sulphate reducing bacteria (SRB). These anaerobic bacteria reduce sulphate, in the presence of a suitable electron donor, to sulphide and bicarbonate. However, the hydrogen …
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Identification of Wastewater Primary Sludge Composition using Augmented Batch Tests and Mathematical Models
… AugBMP test, as methanogenesis was replaced by Biological Sulphate Reduction (BSR), minimising the gas measurement error commonly experienced during the BMP test. The proposed AugBMP and AugBSP tests coupled with mathematical bioprocess modelling, provides a powerful tool for determining the …
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A mathematical model of a high sulphate wastewater, anaerobic treatment system
High sulphate wastewaters, originating from industrial activity or from the biological oxidation of sulphide ores (acid mine drainage), cannot be discharged into the environment untreated. Apart from the high sulphate levels, these waters may be very acidic and have high dissolved heavy metal …
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Investigation of alternative carbon sources for the biological treatment of synthetic sulphate-laden water and mine impacted water in a linear flow channel reactor
… metal components of AMD but often fail to meet sulphate removal standards, necessitating additional polishing steps that add to expense. They also carry drawbacks such as high operational costs and metal sludge generation for active treatment and reduced process control and the need for large …
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A Comparative Analysis of the Performance and the Microbial Ecology of Biological Sulphate Reducing Reactor Systems
… defined as acidic waste-water contaminated with sulphate and heavy metals which is generated through the oxidation of sulphidic ores in the presence of water and oxygen. Mining activities accelerate this process by bringing these ores to the surface where they are further crushed and, eventually …
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Linking microbial community dynamics and performance of a biological sulphate reducing system using a mixed volatile fatty acid stream as electron donor
… by lowering its pH and increasing its metal and sulphate loading, thus making it unsuitable for use by many forms of life. AMD must therefore be treated before entering nearby water systems and soils. An effective treatment technology is considered as the one that can result in water …