科研之友
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摘要
Water safety and security are global problems. Indeed, researchers have taken this matter seriously and have begun to find alternative ways of treating wastewater. The conventional method for treating wastewater has been found to be uneconomical, and the polymeric materials used were not environmentally friendly. Biosorption techniques and mechanisms have been shown to be an effective alternative to replace conventional technologies. As agricultural waste is abundantly available, it has been chosen as the best starting material to produce biosorption material. Also, the hydroxyl functional groups in cellulose act as important parts to produce better absorbent materials. This review has explored the role of natural fibres as adsorbents for wastewater treatment while at the same time, for the removal of adsorbates such as oil, dyes, heavy metals, ionic compounds, and others as reported in the literature. Also investigated in this study, were the different modification types used to enhance the fibres and the mechanism of contaminant removal by the absorbents. Lastly, the physical forms of adsorbates and common types of effluents treated using natural fibres were examined and discussed.
