摘要
为了有效去除感潮河道底泥中邻苯二甲酸二甲酯(DMP),从深圳市某受DMP污染的感潮河道底泥中富集驯化出了一个土著DMP高效降解功能菌群(命名为菌群ZM),确定了菌群ZM的优势功能菌属,探究了pH、温度、盐度对其降解DMP的影响,研究了其在模拟底泥中的DMP降解性能。结果表明,变形杆菌门(Proteobacteria)α-变形菌纲(α-Proteobacteria)的新鞘氨醇杆菌属(Novosphingobium)是最主要的DMP降解功能菌。pH为6、温度为35℃是菌群ZM降解DMP的最佳条件。菌群ZM在盐度0.05%~1.00%内表现出较好的耐受性。菌群ZM在2 d内可以降解模拟底泥中70%的DMP(初始质量浓度100 mg/kg)。综上,菌群ZM在处理感潮河道底泥中DMP污染问题上具有一定的实际应用潜力。
In order to effectively remove dimethyl phthalate(DMP)from the sediment in tidal river,an indigenous DMP degrading functional bacterial consortium(named ZM)was domesticated and concentrated from a tidal river contaminated by DMP in Shenzhen.The dominant functional bacterial of ZM was determined.The effects of pH,temperature and salinity on DMP degradation were explored,and DMP degradation performance in simulated sediment was studied,too.Results showed that the dominant functional genus was Novosphingobium fromα-Proteobacteria of Proteobacteria.pH=6 and 35℃were the optimal conditions for ZM to degrade DMP.ZM showed considerable salt tolerance in the salinity range of 0.05%-1.00%.ZM could degrage 70%DMP(initial mass concentration 100 mg/kg)in simulated sediment within 2 days.In conclusion,ZM had certain practical application potential in the treatment of DMP pollution in tidal river sediment.
作者
周婷
王宏杰
董文艺
黄潇
杨墨
ZHOU Ting;WANG Hongjie;DONG Wenyi;HUANG Xiao;YANG Mo(School of Civil and Environmental Engineering,Harbin Institute of Technology(Shenzhen),Shenzhen Guangdong 518055;State Key Laboratory of Urban Water Resource and Environment,School of Environment,Harbin Institute of Technology,Harbin Heilongjiang 150090;Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control,Shenzhen Guangdong 518055;College of Environmental Science and Engineering,Nanjing University of Information Science and Technology,Nanjing Jiangsu 210000)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2023年第2期188-193,共6页
Environmental Pollution & Control
基金
深圳市科技创新委员会2020年度计划项目(No.KCXFZ202002011006362)。
关键词
功能菌群
邻苯二甲酸二甲酯
感潮河道
底泥
functional bacteria consortium
dimethyl phthalate
tidal river
sediment
