Kayal N, Sinhia P K, Kundu D
Analytical Chemistry Section, Central Glass and Ceramic Research Institute, 196, Raja S. C. Mullick Road, Kolkata-700 032, India.
J Environ Sci Eng. 2010 Jan;52(1):15-8.
The removal efficiency of lead, cadmium and zinc from aqueous solution on adsorption by using rice husk, a non-conventional material in its natural and chemically modified form has been presented in this paper. It has been observed that rate of adsorption is dependent on the nature of the adsorbent, adsorbent dose, particle size of the adsorbent, concentration, pH, contact time, temperature, etc. Under identical experimental condition chemically modified rice husk was found to possess greater adsorption capacity for all metals than untreated rice husk and chemically modified rice husk ash. Chemically modified rice husk could remove 99.8% Pb, 95% Cd and 97% Zn from aqueous solution at room temperature.
本文介绍了以天然和化学改性形式的非常规材料稻壳对水溶液中铅、镉和锌的吸附去除效率。据观察，吸附速率取决于吸附剂的性质、吸附剂剂量、吸附剂粒径、浓度、pH值、接触时间、温度等。在相同实验条件下，发现化学改性稻壳对所有金属的吸附能力均高于未处理的稻壳和化学改性稻壳灰。化学改性稻壳在室温下可从水溶液中去除99.8%的铅、95%的镉和97%的锌。
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