Zaalklapspruit Wetland Before and After Rehabilitation
Field assessment of a wetland in the Mpumalanga coalfields, drawing on water chemistry and biological indicators, aimed at mining companies and licensing authorities.
by CSIR Natural Resources and the Environment | February 2015
Ecological integrity of a Mpumalanga wetland affected by coal mining was assessed before and after rehabilitation, using water quality, bacterial consortium, freshwater algae and vegetation indicators. The work sits within a wider programme to give the coal sector and regulators practical ways of limiting and mitigating mining impacts on wetlands.
R1500,00
Description
Related Products
More Effective Use of Disposable Dust masks
Underground field trials, laboratory seal tests and operator questionnaires at two collieries, covering mask selection, fit, issue records and service time. For ventilation and occupational hygiene staff.
What this report foundDust masks worn by load haul dump operators passed 200 mg of filter loading in an average of 1.7 hours, and continuous miner, shuttle car and roofbolt...
R1500,00
Dust masks worn by load haul dump operators passed 200 mg of filter loading in an average of 1.7 hours, and continuous miner, shuttle car and roofbolt operators reached the same point within two to five hours. Every mask failed laboratory fit testing. An eight hour service life is too long.
R1500,00
Unlocking obstacles to the commercialisation of eutectic freeze crystallisation
2022
Laboratory crystallisation cell tests on copper, brass, stainless steel and aluminium cooling plates in sodium sulphate solution, aimed at replacing mechanical scraping in brine treatment plants.
What this report foundHeat exchanger material governs how fast ice scale forms during eutectic freeze crystallisation of dilute brine.
R1500,00
Heat exchanger material governs how fast ice scale forms during eutectic freeze crystallisation of dilute brine. Induction time fell as thermal conductivity rose, so copper scaled first, while aluminium gave the lowest scaling rate because its low surface energy pushed ice crystallisation into the bulk. Stainless steel delayed onset but scaled heavily once nucleation started.