固定化微生物吸附剂的制备及其对六价铬和磺胺类抗生素的吸附性能  

Preparation of an immobilized microbial adsorbent and its performance on the adsorption of Cr (Ⅵ) and sulfonamide antibiotics

作　　者：刘慧铃 檀笑 黄鸿 罗雅嫣 韩伟江 陈烁娜[1,2] LIU Huiling;TAN Xiao;HUANG Hong;LUO Yayan;HAN Weijiang;CHEN Shuona(College of Natural Resources and Environment,South China Agricultural University,Guangzhou 510642,China;Guangdong Provincial Key Laboratory of Agricultural&Rural Pollution Abatement and Environmental Safety,Guangzhou 510642,China;South China Institute of Environmental Science,Ministry of Ecology and Environment,Guangzhou 510655,China)

机构地区：[1]华南农业大学资源环境学院,广东510642 [2]广东省农业农村污染治理与环境安全重点实验室,广州510642 [3]生态环境部华南环境科学研究所,广东510655

出　　处：《环境工程学报》2022年第9期2807-2816,共10页Chinese Journal of Environmental Engineering

基　　金：广东省重点领域研发计划项目(2020B0202080001);岭南现代农业实验室科研项目(NT2021010);广东省科技计划项目(2021B1212040008)。

摘　　要：以银叶金合欢木屑为载体包埋伯克氏菌属(Burkholderia sp.,简称Y12菌)制备固定化微生物吸附剂——木屑-Y12吸附剂(SY12),考察了其对不同磺胺类抗生素和重金属Cr(Ⅵ)的吸附性能。结果表明,SY12能有效吸附水体中的磺胺甲嘧啶(sulfamerazine, SMZ)、磺胺嘧啶(sulfadiazine, SZ)和磺胺甲噁唑(sulfamethoxazole,SMX),且对5 mg·L^(-1)SZ的去除率最高,为47.9%。SY12对Cr(Ⅵ)也有高效吸附效果,其中对1 mg·L^(-1)Cr(Ⅵ)吸附效果最佳,去除率达96.7%,吸附机制以化学吸附为主。SY12还能同时去除Cr(Ⅵ)–磺胺类药物((sulfonamide antibiotics, SAs)复合污染,但复合污染体系中,SY12对SAs的吸附能力略微下降,对Cr(Ⅵ)的去除能力却增强。此外,SY12能有效去除酸性电镀废水中的Cr;热干燥处理的木屑更有利于吸附Cr(Ⅵ)。An immobilized microbial adsorbent was prepared through embedding Burkholderia sp.(strain Y12)in Acacia sawdust carrier,: Na-alginate immobilized sawdust and Y12 adsorbent(SY12). The performance on the adsorption of Cr(Ⅵ) and different kinds of sulfonamide antibiotics by SY12 was studied. The results showed that SY12 could effectively remove sulfamerazine(SMZ), sulfadiazine(SZ) and sulfamethoxazole(SMX) from water, of which the highest removal rate of 47.9% occurred for 5 mg·L^(-1)SZ. SY12 showed a high Cr(Ⅵ)removal rate, and the best adsorption appeared toward 1 mg·L^(-1)Cr(Ⅵ), the corresponding removal rate was 96.7%, and chemical adsorption dominated Cr(Ⅵ) removal mechanism. SY12 could also eliminate Cr(Ⅵ) – SAs composite pollution simultaneously, but in the combined pollution system, the removal capacity of SAs by SY12 slightly decreased, while the removal capacity of Cr(Ⅵ) increased. Another study indicated that SY12 could effectively remove Cr from acidic electroplating wastewater. In addition, the sawdust treated by heat drying was more conducive to Cr(Ⅵ) adsorption,and all the removal rates decreased with the increase of pollutant mass concentration.

关 键 词：固定化 微生物吸附 重金属 抗生素 复合污染 

分 类 号：X511[环境科学与工程—环境工程]