期刊
PROCESS BIOCHEMISTRY
卷 38, 期 7, 页码 997-1001出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0032-9592(02)00225-X
关键词
aerobic granules; biosorption; cadmium; adsorption kinetics; batch test
Aerobic granules have excellent settle ability and high-porosity structure. This study investigated the feasibility of aerobic granules as a novel type of biosorbent, for cadmium removal from industrial wastewater. Batch tests were carried out at different initial Cd2+ and granule concentrations. Based on experimental data, a kinetic model was developed to describe Cd2+ biosorption by aerobic granules. Results showed that the Cd2+ biosorption on aerobic granule surface was closely related to both initial Cd2+ and granule concentrations. The maximum biosorption capacity of Cd2+ by aerobic granules was 566 mg/g. This study for the first time shows that aerobic granules have a high biosorption capacity to Cd2+ and can be used as an effective biosorbent for the removal of cadmium or other types of heavy metals from industrial wastewater. (C) 2002 Elsevier Science Ltd. All rights reserved.
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