小分子有机物对自养型氧化硫硫杆菌与异养型胶红酵母菌共培养的影响

发布时间：2017-12-26 21:05

本文关键词：小分子有机物对自养型氧化硫硫杆菌与异养型胶红酵母菌共培养的影响　出处：《生态环境学报》2017年10期 　论文类型：期刊论文

【摘要】：在污泥生物淋滤过程中起主要作用的微生物是嗜酸性氧化硫硫杆菌(Acidithiobacillus thiooxidans),污泥中大量的可溶性小分子有机物对氧化硫硫杆菌的生长有抑制作用,而异养型胶红酵母菌(Rhodotorula mucilaginosa)对这些小分子有机物具有吸收和降解作用。通过研究小分子有机物对自养型氧化硫硫杆菌与异养型胶红酵母共培养的影响,探寻能加快生物淋滤进程,缩短生物淋滤周期的方法。采用复合菌体系(氧化硫硫杆菌和胶红酵母菌)和单菌体系(氧化硫硫杆菌)的比较实验,探讨了乙酸、丙酸、柠檬酸、草酸和腐殖酸5种小分子有机物对自养型氧化硫硫杆菌和异养型胶红酵母菌共培养的影响。结果表明:乙酸、丙酸、柠檬酸、草酸和腐殖酸5种小分子有机物对氧化硫硫杆菌的生长及氧化产酸能力均有一定的抑制作用,其抑制作用大小顺序为乙酸丙酸腐殖酸草酸柠檬酸,但实验后期抑制作用都有所消减;在实验前期复合菌体系的氧化硫硫杆菌氧化产酸能力均好于单菌体系,而在实验后期,复合菌体系与单菌体系变化差距逐渐缩小;有机物的分子量越小,对氧化硫硫杆菌的影响越大,胶红酵母菌消除有机物对氧化硫硫杆菌的抑制作用越明显。因此,胶红酵母菌与氧化硫硫杆菌的共培养在一定程度上能有效加快生物淋滤进程,缩短淋滤周期,提高淋滤效率,在污泥生物淋滤技术中有着良好的应用前景。
[Abstract]:Play a major role in the sludge bioleaching microorganism Acidithiobacillus thiooxidans (Acidithiobacillus thiooxidans), the growth of a large amount of sludge in soluble small molecular organic compounds on the inhibition of Thiobacillus thiooxidans, heterotrophic glue (Rhodotorula mucilaginosa) red yeast with absorption and degradation of these small organic molecules. By studying the effect of small organic compounds on the co culture of autotrophic Thiobacillus Thiobacillus and heterotrophic Rhodotorula, we explored ways to speed up bioleaching and shorten bioleaching cycle. The composite microbial system (Thiobacillus thiooxidans and gum red yeast) and single bacteria system (thiooxidans) experiments to investigate the effect of acetic acid, propionic acid, citric acid, oxalic acid and humic acid of 5 kinds of small molecular organic co culture of autotrophic Thiobacillus thiooxidans and heterotrophic bacteria Rhodotorula mucilaginosa. The results showed that the growth inhibition and oxidative acid production ability were acetic acid, propionic acid, citric acid, oxalic acid and humic acid of 5 kinds of small organic molecules of sulfur oxidizing bacteria, the inhibition order of acetic acid and propionic acid humic acid oxalic acid, citric acid, but the inhibition of reduction has been late early in the experiment; the compound bacteria system of Thiobacillus thiooxidans oxidation acid production ability were better than single bacteria system, while in the later stage of the experiment, composite bacteria system and single bacteria change gradually narrowing the gap; organic matter quantity is small, the thiooxidans influence more big, red gum and eliminate the inhibitory effect on yeast organic sulfur coli is more obvious. Therefore, the co culture of Rhodotorula Thiobacillus and Rhodotorula Thiobacillus can speed up the bioleaching process, shorten the leaching cycle and improve the leaching efficiency to a certain extent, and has a good application prospect in sludge bioleaching technology.
【作者单位】：九江学院鄱阳湖生态经济研究中心;九江学院化学与环境工程学院;九江市流域管理与生态保护重点实验室(九江学院);兰州理工大学石油化工学院;
【基金】：国家自然科学基金项目(21367014) 江西省自然科学基金项目(20151BAB203026) 江西省教育厅科技项目(GJJ14732)
【分类号】：X172
【正文快照】： 引用格式:杨期勇,杨文锋,朱琼,张庆芳,刘艺奇,唐梅,谭婵娟.2017.小分子有机物对自养型氧化硫硫杆菌与异养型胶红酵母菌共培养的影响[J].生态环境学报,26(10):1768-1775.YANG Qiyong,YANG Wenfeng,ZHU Qiong,ZHANG Qingfang,LIU Yiqi,TANG Mei,TAN Chanjuan.2017.Effects oflow

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