细胞内聚合物诱导导电聚苯胺提高厌氧污水处理产甲烷量研究  

Intracellular Polymer Induces Conductive Polyaniline to Increase Methane Production in Anaerobic Wastewater Treatment

作　　者：姚兵 鲁鉴予 Yao Bing;Lu Jianyu(Key Laboratory of Environmental Protection in Water Transport Engineering,Ministry of Communications,Tianjin 300456,China;Tianjin Research Institute for Water Transport Engineering,M.O.T,Tianjin 300456,China)

机构地区：[1]交通运输部天津水运工程科学研究所,天津300456 [2]水路交通环境保护技术交通行业重点实验室,天津300456

出　　处：《环境科学与管理》2021年第4期117-120,130,共5页Environmental Science and Management

摘　　要：研究以细菌细胞内聚合物(IPS)为模板,合成了多孔结构聚苯胺(PANI)。IPS诱导的PANI比表面积约为原始PANI的1.8倍。在光密度(OD)为0.536时,对细菌细胞的用量进行了优化。IPS诱导的多孔PANI的导电率约为3.1s/cm,是未经模板合成的PANI的4倍左右。结晶度的提高、d-间距的减小和带隙的降低共同促成了IPS诱导的PANI导电性的提高。利用多孔PANI作为导电介质,提高厌氧微生物之间的电子传递,从而加速废水产生甲烷(CH 4)气体。在0.7~3.1s/cm范围内,IPS诱导的PANI对CH 4的生成有积极的影响。In this study,a porous structure of polyaniline(PANI)was synthesized using bacterial intracellular polymer(IPS)as a template.The specific surface area of PANI induced by IPS is about 1.8 times that of the original PANI.When the optical density(OD)is 0.536,the dosage of bacterial cells is optimized.The conductivity of porous PANI induced by IPS is about 3.1s/cm,which is about 4 times that of PANI synthesized without template.The increase of crystallinity,the decrease of d-spacing and the decrease of band gap together contribute to the increase of PANI conductivity induced by IPS.The study uses porous PANI as a conductive medium to improve the electron transfer between anaerobic microorganisms,thereby accelerating the production of methane(CH 4)gas from wastewater.In the range of 0.7~3.1 s/cm,PANI induced by IPS has a positive effect on the production of CH 4.

关 键 词：聚苯胺 细菌细胞 导电性 甲烷产生 

分 类 号：X703[环境科学与工程—环境工程]