摘要
为了更有效地去除突发性污染水体中的致毒有机化合物,采用生物炭耦合微生物技术对污染水体中的苯胺进行了去除研究。首先,以柚皮为原料,利用高温裂解制备法,通过优化裂解温度和裂解时间,制备得到生物炭;进而,探明生物炭对苯胺的吸附特性与机制;最后,以体积比1∶1制得Comamonas sp.TZ1和Pseudomonas sp.JH1混合菌剂,接种至生物炭反应器(R1)中构建生物炭耦合微生物反应器(R2),考察其对苯胺的处理效果。结果表明:生物炭较适宜的制备条件为裂解温度600℃和裂解时间2 h;对苯胺的吸附过程符合Freundlich等温方程,属于多分子层吸附;在连续动态运行18 d过程中,当水体中苯胺初始浓度分别由50 mg/L降至10 mg/L和10 mg/L降至5 mg/L时,R1中所吸附的苯胺因浓度差驱动作用重新进入水体,去除率分别为-194%和-21.19%,而R2则能一直呈现较好的去除效果。
To more effectively remove the toxic compounds in the sudden polluted water,the technique of biochar coupling microbial agents was applied to eliminate aniline in polluted water. Firstly,the preparation of biochar was optimized with pyrolysis temperature and time. Secondly,aniline adsorption characteristic and mechanism was discussed. Finally,the microbial agents obtained by mixing Comamonas sp. TZ1 and Pseudomonas sp. JH1 in ratio of1 ∶ 1 was seeded into the biochar reactor,and then studied their elimination performance for aniline. Results showed that the optimal preparation conditions were 600 ℃ for 2 h; the adsorption process was in line with the Freundlich equation and belonged to multi-molecular layer adsorption; during 18 days＇ continuous operation,when the initial concentration of aniline decreased to 10 mg / L and 5 mg / L from 50 mg / L and 10 mg / L,respectively,aniline in the biochar reactor was re-entered into water due to concentration difference,and the removal rate was-194% and-21. 19%,but the good elimination performance for aniline in the biochar coupling microbial agents reactor was kept.
出处
《环境工程学报》
CAS
CSCD
北大核心
2016年第5期2454-2458,共5页
Chinese Journal of Environmental Engineering
基金
衢州市科技局资助项目(2015Y012)
衢州学院中青年学术骨干资助项目(XNZQN201506)
2015年浙江省大学生创新项目(2015R429003)
浙江省第六
七届大学生生命科学竞赛
关键词
污染水体
苯胺
生物炭
菌剂
polluted water
anilne
biochar
microbial agents
