ADSORPTION BEHAVIOR OF PB(II) IN AQUEOUS SOLUTION USING COFFEE HUSK-BASED ACTIVATED CARBON MODIFIED BY NITRIC ACID

Tạp chí / nơi xuất bản: American Journal of Engineering Research, Volume-5, Issue-4, pp-120-129, 2016

Thuộc nhóm
Tóm tắt	Activated carbon (AC) was prepared from coffee husk and modified by nitric acid for effective lead ions removal from aqueous solution. The as-prepared samples have uniform particles size, developed surface area and contain acidic surface functional groups. Nitric acid modification showed a pronounced effect on improving Pb(II) adsorption capacity. The Freundlich isotherm model and pseudo second-order kinetic model could best describe the adsorption of Pb(II) onto AC-Nitric. Thermodynamics parameters proved the spontaneous, physic and endothermic nature of the adsorption of Pb(II) onto AC-Nitric.
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Ngày đưa lên	09/11/2016
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