生铁屑固定硫酸盐还原菌颗粒特性实验分析

发布时间：2018-07-24 16:50

【摘要】：针对硫酸盐还原菌(SRB)处理煤矿酸性废水(AMD)需要充足碳源,易受外界因素干扰,单独作用效果差等问题,利用微生物固定化技术,以生铁屑作为主要基质材料,并联合SRB污泥、麦饭石及玉米芯颗粒,制备高活性生铁屑固定化颗粒,以完全活化的固定化颗粒为研究对象,探究生铁屑固定化颗粒的理化性状及对Mn~(2+)的吸附规律。结果表明:颗粒能够抵抗p H值为4的酸溶液(如AMD),并在碱、盐溶液中保持较好的稳定性,对Mn~(2+)的吸附容量符合Freundlich等温吸附方程(R2=0.98868,1/n=0.4896),吸附动力学符合Elovich动力学模型(R2=0.9964),可见,所制备的固定化颗粒对Mn~(2+)具有表面快速吸附的能力,且对处理AMD具有一定的适应性。
[Abstract]:In order to solve the problems such as sufficient carbon source is needed to treat (AMD) from coal mine acid wastewater by sulphate reducing bacteria (SRB), it is easy to be interfered by external factors, and the effect of single action is poor. Using microbial immobilization technology, iron scraps are used as the main matrix material and combined with SRB sludge. The immobilized iron particles with high activity were prepared from Maifan stone and corncob. The physicochemical properties of immobilized particles and the adsorption law of mn ~ (2) were studied. The results show that the particle can resist acid solution with pH value of 4 (such as AMD), and maintain good stability in alkali and salt solution). The adsorption capacity of Mn2 conforms to the Freundlich isothermal adsorption equation (R2O0.988681pncnc4896), and the adsorption kinetics accords with the Elovich kinetic model (R2O0.9964). The immobilized particles have the ability to adsorb mn ~ (2) rapidly on the surface and have some adaptability to the treatment of AMD.
【作者单位】： 辽宁工程技术大学力学与工程学院;辽宁工程技术大学建筑与工程学院;
【基金】：国家自然科学基金(41672247、51274110、51474121) 辽宁省自然科学基金(2015020619)
【分类号】：X752;X172
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本文编号：2142019