Phytoremediation of Heavy Metals by Water Hyacinth in Sewage Wastewater Stabilization Ponds Under Humid Lowland Tropical Climatic Conditions
作者: Patrick S. Michael
作者单位: 1Department of Agriculture, PNG University of Technology, Papua New guinea
刊名: International Journal of Environment, 2019, Vol.8 (1), pp.30-42
来源数据库: Progressive Sustainable Developers
DOI: 10.3126/ije.v8i1.23091
原始语种摘要: Plant macrophytes in wastewater treatment systems are important for providing various ecological and environmental benefits, e.g. detoxification and removal of toxic heavy metals. In this study, phytoremediation of four heavy metals (Cd, Cu, Pb and Zn) by water hyacinth (E. crassipes) in sewage wastewater stabilization ponds under humid lowland tropical climatic conditions in Papua New Guinea was studied using a purposive design and grab sampling technique. The wastewater and plant samples collected were analysed for the heavy metals. In almost all cases, an increasing concentration of heavy metals exceeding the standard (FAO and WHO) minimum permissible levels was measured in both the wastewater and the leaves. The general trend in concentration of the effluent pond was such that...
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  • wastewater 废水
  • effluent 
  • heavy 重大的
  • sewage 阴沟水
  • removal 消去
  • concentration 浓度
  • studied 学习
  • respectively 分别
  • availability 有效度
  • treatment 处理