Adsorption of toxic metals from greywater using coconut husk biochar and spent green tea
Abudu Ballu Duwiejuah, Emmanuel Frimpong Adjei, Elliot Haruna Alhassan
Abstract
) of coconut husk biochar ranged from 235.64 to 1132.40 mg/g for Cd, 1.31-8.80 mg/g for Cr and 58.85-415.80 mg/g for Pb. Lead demonstrated the highest affinity for the binding of coconut husk biochar and spent impra ginseng flavoured green tea adsorbent with a trend of Pb > Cd > Cr. Coconut husk biochar and spent impra ginseng flavoured green tea adsorbent were suitable for the toxic metals adsorption in the greywater. Cr showed different removal efficiencies where coconut husk biochar showed more effective removal than spent impra ginseng flavoured green tea. The application of coconut husk biochar and spent impra ginseng flavoured green tea in wastewater treatment is a green technology means and can lead to zero pollution of freshwater.