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Removal Of Boron From Aqueous Solution Using A Composite

Congress: 2015
Author(s): Vhahangwele Masindi (Polokwane)

Keyword(s): Sub-theme 10: Management of water resources,
AbstractThis study evaluated the feasibility of integrating amorphous magnesite and bentonite clay (composite) as an alternative technology for removing Boron from industrial effluents. The removal of boron from industrial effluents by using Magnesite-bentonite clay composite was studied in batch equilibration technique. The effects of equilibration time, adsorbent dosage, adsorbate concentration and pH on removal of boron were investigated. The experiments demonstrated that boron removal is optimum at 30 minutes of agitation, 2g of adsorbent dosage, 20 mg L-1 of adsorbate concentration. The adsorption data fitted well into both Langmuir adsorption isotherm and Freundlich adsorption isotherm hence proving monolayer and multilayer adsorption. The kinetic studies reported that the data favours pseudo second order reaction than first order hence proving chemisorption. Under optimized conditions, the composite was able to remove Boron to below World Health Organization (WHO) water quality guidelines. Henceforth, it was concluded that this fundamental study will be helpful for further application in the treatment of boron contaminated water.
2011 IWRA - International Water Resources Association - - Admin