Fixed-bed biosorption of cadmium using immobilized Scenedesmus obliquus CNW-N cells on loofa (Luffa cylindrica) sponge

被引：41

作者：

Chen, Bor-Yann ^{[1
]}

Chen, Chun-Yen ^{[2
]}

Guo, Wan-Qian ^{[3
]}

Chang, Hao-Wei ^{[4
]}

Chen, Wen-Ming ^{[5
]}

Lee, Duu-Jong ^{[6
]}

Huang, Chieh-Chen ^{[7
,8
]}

Ren, Nan-Qi ^{[3
]}

Chang, Jo-Shu ^{[2
,4
,9
]}

机构：

[1] Natl Ilan Univ, Dept Chem & Mat Engn, Ilan, Taiwan

[2] Natl Cheng Kung Univ, Ctr Biosci & Biotechnol, Tainan 701, Taiwan

[3] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China

[4] Natl Cheng Kung Univ, Dept Chem Engn, Tainan 701, Taiwan

[5] Natl Kaohsiung Marine Univ, Dept Seafood Sci, Microbiol Lab, Kaohsiung 811, Taiwan

[6] Natl Taiwan Univ Sci & Technol, Dept Chem Engn, Taipei, Taiwan

[7] Natl Chung Hsing Univ, Agr Biotechnol Ctr, Taichung 402, Taiwan

[8] Natl Chung Hsing Univ, Dept Life Sci, Taichung 402, Taiwan

[9] Natl Cheng Kung Univ, Res Ctr Energy Technol & Strategy, Tainan 701, Taiwan

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 160卷

关键词：

Biosorption; Cadmium; Scenedesmus obliquus; Fixed-bed process; Microalgal biosorbent; AQUEOUS-SOLUTIONS; PRETREATED BIOMASS; HEAVY-METALS; LEAD; REMOVAL; ALGAE; IONS; BIOSORBENT; ENHANCE;

D O I：

10.1016/j.biortech.2014.02.006

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A continuous fixed-bed biosorption process was established for cadmium (Cd) removal by Scenedesmus obliquus CNW-N (isolated from southern Taiwan) cells immobilized onto loofa sponge. This immobilized-cell biosorption process allows better recovery and reusability of the microalgal biomass. The growth of microalgae on the matrix support with appropriate nutrient supplementation could enhance the overall metal removal activity. Major operating parameters (e.g., feeding flow rate, cycle number of medium replacement, and particle diameter of the sponge) were studied for treatability evaluation. The most promising cell growth on the sponge support was obtained at a flow rate of 0.284 bed volume (BV)/min, sponge particle diameter of 1 cm, and with one cycle of medium replacement. The performance of fixed-bed biosorption (adsorption capacity of 38.4 mg, breakthrough time at 15.5 h) was achieved at a flow rate of 5 ml/min with an influent concentration of 7.5 mg Cd/l. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：175 / 181

页数：7

共 29 条

[1] Microalgal-luffa sponge immobilized disc: a new efficient biosorbent for the removal of Ni(II) from aqueous solution [J].