Browsing Faculty of Natural and Agricultural Sciences by Author "Claassens, S."
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Application of evolutionary algorithms to develop a rule set for assessing the rehabilitation status of asbestos mines in South Africa
Bezuidenhout, J.J.; Liebenberg, D.; Claassens, S.; Van Rensburg, L. (Springer Link, 2013)Asbestos mining has left a legacy of pollution in former mining areas that continues to negatively affect both the environment and local communities. In 2007, the Rehabilitation Prioritisation Index was developed as a ... -
Evaluation of organic matter stability in wood compost by chemical and thermogravimetric analysis
Nada, W.M.; Van Rensburg, L.; Claassens, S.; Blumenstein, O.; Friedrich, A. (University of Tehran (Graduate Faculty of Environment), 2012)This study investigated maturation and stability levels during composting of Quercus robur (QR) woodchips mixed with different nitrogen sources (horse manure, HM and lake mud, LM) for potential agronomic utilisation. The ... -
Insights and lessons learned from the long–term rehabilitation of an iron ore mine
Liebenberg, D.; Claassens, S.; Van Rensburg, L. (Graduate Faculty of Environment, 2013)A long-term study was conducted between 1985 and 2003 on rehabilitation trials at Sishen Iron Ore Mine, South Africa, to identify grass species that would survive in the artificial growth medium applied to the sites, and ... -
Rehabilitation of asbestos mining waste: a rehabilitation prioritisation index (RPI) for South Africa
Van Rensburg, L.; Claassens, S.; Bezuidenhout, J.J.; Jansen van Rensburg, P.J. (Springer, 2008)The much publicised problem with major asbestos pollution and related health issues in South Africa, has called for action to be taken to negate the situation. The aim of this project was to establish a prioritisation index ... -
Soil microbial community function and structure in a post-mining chronosequence
Claassens, S.; Jansen van Rensburg, P.J.; Maboeta, M.S..; Van Rensburg, L. (Springer, 2008)Temporal changes in microbial community function (enzymatic activities) and structure (phospholipid fatty acids) were studied in a post-mining chronosequence of coal discard sites of different rehabilitation ages. The ...