生物炭
化学
降级(电信)
邻苯二甲酸盐
颗粒
环境修复
生物降解
弹丸
邻苯二甲酸二丁酯
污染
钠
响应面法
环境化学
制浆造纸工业
核化学
色谱法
有机化学
热解
材料科学
电信
生态学
计算机科学
工程类
复合材料
生物
作者
Liangwei Kou,Hanyu Chen,Xueqi Zhang,Shaoqin Liu,Baozhong Zhang,Huina Zhu,Zhimin Du
标识
DOI:10.1080/09593330.2023.2215456
摘要
In this study, a new strain of bacteria, named Rhodococcus sp. KLW-1, was isolated from farmland soil contaminated by plastic mulch for more than 30 years. To improve the application performance of free bacteria and find more ways to use waste biochar, KLW-1 was immobilised on waste biochar by sodium alginate embedding method to prepare immobilised pellet. Response Surface Method (RSM) predicted that under optimal conditions (3% sodium alginate, 2% biochar and 4% CaCl2), di (2-ethylhexyl) phthalate (DEHP) degradation efficiency of 90.48% can be achieved. Under the adverse environmental conditions of pH 5 and 9, immobilisation increased the degradation efficiency of 100 mg/L DEHP by 16.42% and 11.48% respectively, and under the high-stress condition of 500 mg/L DEHP concentration, immobilisation increased the degradation efficiency from 71.52% to 91.56%, making the immobilised pellets have strong stability and impact load resistance to environmental stress. In addition, immobilisation also enhanced the degradation efficiency of several phthalate esters (PAEs) widely existing in the environment. After four cycles of utilisation, the immobilised particles maintained stable degradation efficiency for different PAEs. Therefore, immobilised pellets have great application potential for the remediation of the actual environment.
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