期刊
CHEMICAL ENGINEERING JOURNAL
卷 242, 期 -, 页码 187-194出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2013.10.058
关键词
Methylene blue; LDH-bacteria aggregates; Adsorption; Enhanced biodegradation
资金
- National Science Foundation of China [21377079]
- Science and Technology Commission of Shanghai [10DZ120010C, 09DZ2251700]
- Shanghai Leading Academic Discipline [S30109]
A new biological material, a layered double hydroxide (LDH) combined with Bacillus subtilis (termed LDH-bacteria aggregates), was used to remove methylene blue (MB) by both adsorption and biodegradation. The effects of the initial dye concentration, solution pH, temperature, coexisting anions and adsorbent dosages on decolourisation performance were studied by batch tests. The Ni and Fe ions released from the LDH improved the activity and growth of the bacteria. The mechanism for the adsorption of MB dye onto LDH-bacteria aggregates may involve both chemical and physical adsorption. The aggregates were regenerated through microbial metabolism. After the fourth regeneration, the amount of MB adsorbed onto the LDH-bacteria aggregates was 5.23 mg/g (83.3% of the initial adsorption amount). The results showed that LDH-bacteria aggregates could be employed as effective materials for the removal of dyes from aqueous solution. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据