Now showing items 1-10 of 16
A laboratory scale study to investigate the effects of solids concentration on the efficiency of anaerobic digestion.
With the exceptions of mixing and heating mechanisms, and the recycling of settled solids, no radical changes or improvements have been made to conventional anaerobic digesters treating municipal sewage. These digesters ...
Microbiological investigations into granular sludge from two anaerobic digesters differing in design and industrial effluent purified.
Due to a combination of selection criteria, sludges from upflow anaerobic digesters treating industrial waste waters consist primarily of well-settling, dense agglomerates called granules. Quantification of the component ...
Bioremediation of oil-contaminated soil : a South African case study.
In 1990, an oil recycling plant situated in Hammarsdale, South Africa, was decommissioned and a decision was taken by management to rehabilitate the site in preparation for resale. The heavily impacted area covered over ...
Development of a laboratory river model to determine the environmental impacts of key xenobiotic compounds.
Microorganisms are increasingly used in toxicological studies to determine potential environmental impacts of xenobiotic compounds. A multi-stage laboratory model was developed to facilitate the examination of environmental ...
Quantification of fungal degradation of pinus patula and eucalyptus grandis.
Previous studies of fungal decay have mainly examined long term effects of wood decay. In contrast, the present work, was designed to quantify fungal degradation of wood during incipient decay. Three facultatively ...
Development of a code of practice for co-disposal to obviate inimical environmental impacts of generated gases and leachates.
Despite its phasing out in numerous countries, such as Germany and the U.S.A., co-disposal of hazardous waste with municipal solid waste continues to be widely practised in South Africa. Co-disposal utilises properties ...
Genetic manipulation of saccharomyces cerevisiae for improved ethanol production from d-xylose.
No abstract available.
Installation, commissioning and preliminary microbiological and operational investigations of full-scale septic tank digestion of sewage.
This study investigated the commissioning and maintenance of a Pennells two-tank bioreactor system with specific reference to its application in rural areas of KwaZulu- Natal, South Africa to treat sewage and generate ...
Exploitation of indigenous fungi in low-cost ex situ attenuation of oil- contaminated soil.
The central aim of this study was to determine if indigenous fungi of an oil-contaminated soil could be effectively used in a low-cost bioremediation of the soil. Since some of the contaminant had been present at the ...
Application of image analysis in microecophysiology research : methodology development.
Rehabilitation of landfill sites is important for successful land utilization. Revegetation is one key element of the process since it can overcome aesthetic problems. The inimical challenges of landfill leachate and gas ...