当前位置: 首页 > 文章 > 腐植酸、EDTA、Cr(Ⅵ)调控猪粪尿废水异化Fe(Ⅲ)还原偶联VFAs的转化能力比较 农业环境科学学报 2016,35 (03) 590-595
Position: Home > Articles > A comparative study on ability of humic acids, EDTA and Cr(Ⅵ)to regulate dissimilatory Fe(Ⅲ)-mediated transformation of VFAs in swine wastewater Journal of Agro-Environment Science 2016,35 (03) 590-595

腐植酸、EDTA、Cr(Ⅵ)调控猪粪尿废水异化Fe(Ⅲ)还原偶联VFAs的转化能力比较

作  者:
何清明;邬红东;石广军;罗颖
单  位:
重庆大学三峡库区生态环境教育部重点实验室;泰州学院医药与化学化工学院重庆大学三峡库区生态环境教育部重点实验室
关键词:
异化Fe(Ⅲ)还原;EDTA;腐植酸;Cr(Ⅵ);VFAs
摘  要:
以人工合成Fe(OH)3作为电子受体,在猪粪尿废水中添加具有铁还原能力的菌株,厌氧恒温培养,通过对猪粪尿废水中添加不同浓度腐植酸、EDTA、Cr(Ⅵ),揭示3种典型理化因素调控猪粪尿废水中异化Fe(Ⅲ)还原偶联挥发性脂肪酸(Volatile fatty acids,VFAs)转化能力。结果表明,电子穿梭体腐植酸促进Fe(Ⅲ)还原,加速VFAs降解,而络合剂EDTA和重金属Cr(Ⅵ)则会阻碍Fe(Ⅲ)还原,减缓VFAs降解。虽然三种影响因子影响机理不同、途径不同,但最终Fe(Ⅲ)还原和VFAs平衡点不变。
译  名:
A comparative study on ability of humic acids, EDTA and Cr(Ⅵ)to regulate dissimilatory Fe(Ⅲ)-mediated transformation of VFAs in swine wastewater
作  者:
HE Qing-ming;WU Hong-dong;SHI Guang-jun;LUO Ying;College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University;Key Laboratory of the Three Gorges Reservoir Region′s Eco-Environment, Ministry of Education, Chongqing University;
关键词:
dissimilatory Fe(Ⅲ)reduction;;EDTA;;humic acids;;Cr(Ⅵ);;VFAs
摘  要:
Research has showed that environmental factors influence dissimilatory Fe(Ⅲ)-mediated transformation of VFAs in water. Here we examined the effects of humic acids, EDTA and Cr(Ⅵ)at different concentrations on the ability of dissimilatory Fe(Ⅲ)to regulate the degradation of VFAs in swine wastewater at constant temperatures. The reduction of Fe(Ⅲ)oxides was promoted by addition of humic acid to swine wastewater, and the rate of VFAs degradation was accelerated by increasing amount of humic acid. However, trisodium EDTA and Cr(Ⅵ)inhibited the reduction of Fe(Ⅲ) and slowed down the degradation of VFAs. Although these three factors had different mecha-nisms and processes influencing Fe(Ⅲ)reduction, the final reduction of Fe(Ⅲ)and the balance points of VFAs remained same.

相似文章

计量
文章访问数: 9
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊