摘要
为提高磺胺甲恶唑(SMX)的生物降解性,研究将SMX加入到以葡萄糖为碳源的培养基中,以考察SMX对微生物生长的抑制作用规律。结果表明,随着SMX含量的增加,其抑制作用增强。但当采用紫外光对SMX进行辐照后,其对微生物的抑制作用得到缓解。加入葡萄糖作为共基质通过共代谢机制可提高SMX的矿化程度,而经过紫外辐照后,其矿化程度还可进一步提高。通过离子色谱分析发现,在紫外辐照下,SMX结构中S元素以SO42-形式释放出来,而N元素则主要以NH4+、NO2-和NO3-的形式释放出来,所形成的中间产物的可生化性比SMX明显提高。
In order to enhance sulfamethoxazole （SMX） biodegradability, SMX was added into a medium including glucose to investigate its inhibition to microbial growth. The experimental results indicated that the inhibition increased with SMX concentration increasing. But the inhibition was relieved by means of UV irradiation. SMX removal rate and mineralization degree were increased by means of co-metabolism, in Which glucose was as co-substrate with SMX, and the mineralization degree was increased further when UV irradiation was used for photolysis ofSMX. SMX photolysis intermediates became easier biodegradable, with S and N atoms releasing in SO4^2-, NP4^＋, NO2 and NO; from its structure according to ion chromatography analysis.
出处
《水处理技术》
CAS
CSCD
北大核心
2014年第5期38-42,共5页
Technology of Water Treatment
基金
高等学校博士学科点专项科研基金项目(20113127110002)
上海市基础研究重点项目(11JC1409100)
上海师范大学校级科研项目(SK201336)
上海师范大学大学生创新实验项目
关键词
磺胺甲恶唑
生物抑制作用
紫外光解
生物降解
共基质
sulfamethoxazole
biological inhibitory
UV photolysis
biodegradation
co-substrate
