Abstract：The effectiveness of bioleaching is highly dependent on many biological factors. Four factors were investigated: sucrose concentration, spores concentration, fly ash concentration, and the time of fly ash addition. By using the central composite design, the non-linear equations, which described the relationship between the concentration of extracted heavy metals and the four factors above were obtained. Besides, the range of optimal bioleaching conditions were determined as follows: the concentration of sucrose, spores, fly ash was 114~126g/L, 1.6×107~2.1×107 spores/mL, 29~39g/L, respectively, and the time of fly ash addition was 3.6~4.4d. The trial was carried out in the optimum conditions by bioleaching 70g/L fly ash for 20 days. The concentration of extracted heavy metals was up to 901mg/L, which was 41% of the total heavy metals in fly ash.
吴庭吉, 汪群慧, 杨洁, 马鸿志. 利用响应面法优化生物淋滤飞灰处理条件的研究[J]. 中国环境科学, 2009, 29(7): 738-744.
WU Ting-Ji, WANG Qun-Hui, YANG Jie, MA Hong-Zhi. Optimization on bioleaching factors of municipal solid waste incineration fly ash using response surface methodology.. CHINA ENVIRONMENTAL SCIENCECE, 2009, 29(7): 738-744.