%0 Journal Article
%T A Novel Approach to Bioleach Soluble Phosphorus from Rock Phosphate
%A CHI Ruan
%A XIAO Chun-qiao
%A HUANG Xiao-hui
%A WANG Cun-wen
%A WU Yuan-xin
%A <br>池汝安
%A 肖春桥
%A 黄晓慧
%A 王存文
%A 吴元欣
%J 过程工程学报
%D 2007
%I 
%X A novel approach to bioleach soluble phosphorus from rock phosphate, involving the bio-oxidation of pyrite by adaptated Acidithiobacillus ferrooxidans (At. f) and the product of sulfuric acid to dissolve rock phosphate, has been proposed in this paper. The soluble phosphorus could be leached more effectively in the presence of pyrite by At. f than that leached directly by sulfuric acid. The optimal technological parameters are presented. The highest phosphorus leaching rate is 9.00% when the culture substrate is the mixture of FeSO4·7H2O and pyrite, the phosphorus leaching rate is 8.00% when the initial pH and culture time are 2.5 and 5 d, respectively. The optimal rock phosphate particle size is 0.05 mm for the leaching of phosphorus. The bigger the grains of pyrite, the lower the phosphorus leaching rate. The bacterium At. f should be appropriately adaptated, which makes it easier to bioleach soluble phosphorus from rock phosphate.
%K bioleaching
%K soluble phosphorus
%K rock phosphate
%K pyrite
%K Acidithiobacillus ferrooxidans (At
%K f)<br>微生物化学
%K 生物技术
%K 免疫力
%K 生物知识
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=8CD74C24DB618F9BB9727619FF2CCD82&yid=A732AF04DDA03BB3&vid=DF92D298D3FF1E6E&iid=0B39A22176CE99FB&sid=85002451B65CE0D1&eid=EC34D52BE81085CE&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=0&reference_num=21