Issue 41, 2013
From the journal:

RSC Advances

Anaerobic biodegradability and toxicity of caprolactam-tetrabutyl ammonium bromide ionic liquid to methanogenic gas production

Erhong Duan,*a   Zaixing Li,a   Jingjing Liu,b   Yanfang Liu,a   Yu Song,a   Jian Guana  and  Kun Yanga  

* Corresponding authors

a School of Environmental Science and Engineering, Hebei University of Science and Technology, No. 26 Yu xiang street, Yu hua district, Shijiazhuang, Hebei 050018, China
E-mail: deh@hebust.edu.cn
Fax: 86 031181668436
Tel: 86 031181668436

b School of Civil and Environment, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, P. R. China
E-mail: 348756386@qq.com

Abstract

The anaerobic biodegradability and toxicity of caprolactam-tetrabutyl ammonium bromide ionic liquid to methanogenic gas production were investigated in this study. Both methane production and chemical oxygen demand removal from liquid wastewater decreased with increasing concentrations of the ionic liquid. The toxicity of caprolactam-tetrabutyl ammonium bromide ionic liquid to methanogenic gas production was clear. During the sludge digestion incubation period, domesticated microorganisms acclimated to caprolactam-tetrabutyl ammonium bromide ionic liquid and were able to adapt to the ionic liquid solutions. The pH of the control sample was stable for 15 days and then slowly increased. The caprolactam-tetrabutyl ammonium bromide ionic liquid takes a longtime to be digested. Therefore, caprolactam-tetrabutyl ammonium bromide ionic liquids are biodegradable.

Graphical abstract: Anaerobic biodegradability and toxicity of caprolactam-tetrabutyl ammonium bromide ionic liquid to methanogenic gas production

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Article information

DOI
https://doi.org/10.1039/C3RA42638F
Article type
Paper
Submitted
30 May 2013
Accepted
05 Aug 2013
First published
07 Aug 2013

RSC Adv., 2013,3, 18817-18820

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Anaerobic biodegradability and toxicity of caprolactam-tetrabutyl ammonium bromide ionic liquid to methanogenic gas production

E. Duan, Z. Li, J. Liu, Y. Liu, Y. Song, J. Guan and K. Yang, RSC Adv., 2013, 3, 18817 DOI: 10.1039/C3RA42638F

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