文档介绍：小论文甲醛降解菌的分离纯化及其降解效果研究摘要: 本文以甲醛为唯一碳源,从工业废水中分离得到 2株甲醛降解菌, 经形态学观察、生理生化特性研究,初步判定一株为假单胞菌,另一株为霉菌。通过单因素试验,分析两者的单菌株以及混合菌株甲醛降解效果:菌①的最适 pH= ,转速为 120 rpm ;菌②最适 pH= ,转速为 80 rpm ;菌①+②混合菌最适为 pH= ,转速为 100 rpm 。在两因素三水平实验中通过在 30℃培养 24h, 找到 pH 和摇床转速对甲醛降解的共同影响:菌①为 pH= 、转速 80 rpm ,% ;菌②为 pH= 、转速80 rpm , % ; 菌①+②双菌混合培养时为 pH= 、转速 100 rpm ,其甲醛降解率达到 % 。在常温情况下,分别保证两菌在最适条件下进行降解实验,结果显示在 72 小时时其甲醛降解率分别达到 % 、 % 、 % 。关键词: 甲醛;甲醛降解菌;筛选;降解特性;降解曲线 The separation and purification of formaldehyde degrading bacteria and their degradation effect research In this paper, using formaldehyde asa sole carbon source, from industrial waste water of2 strains isolated from formaldehyde degradation bacteria, by morphological observation, physiological and biochemical characteristics of the strain, the preliminary determination for Pseudomonas, another one for mold. Through single factor analysis of both single-strain and hybrid strains of formaldehyde degradation effect: bacteria ① optimum pH =, the rotating speed is 120rpm; bacteria ② optimum pH =, the rotating speed is 80rpm; bacteria ①+② mixed bacteria most suitable for the pH =, speed is 100rpm. In two experimental factors and three levels by30℃ for 24h, find the pH and shaking speed on bined effect of the degradation of formaldehyde: for bacteria ① the pH =, speed 80 rpm, the formaldehyde degrad