葡萄糖和氯化钠对米根霉利用鱼粉废水生成乳酸的影响  

Effect of Glucose and Sodium Chloride on Lactic Acid Production Integrated with Fishmeal Wastewater Treatment by Rhizopus oryzae

作　　者：董涛[1] 黄丽萍[1] 陈景文[1] 李宁[1] 乔显亮[1] 

机构地区：[1]大连理工大学环境科学与工程系,辽宁大连116024

出　　处：《应用与环境生物学报》2007年第4期579-582,共4页Chinese Journal of Applied and Environmental Biology

基　　金：教育部留学回国人员科研启动基金(教外司留[2004]527);工业生态与环境工程教育部重点实验室资助项目~~

摘　　要：米根霉AS3.254能较好地利用鱼粉废水生成乳酸,葡萄糖和NaCl浓度能显著影响该过程的实现.当外加葡萄糖浓度为30g/L,发酵培养72h的鱼粉废水CODCr去除率为97.8%,乳酸产量为19.4g/L,生物量为3.56g/L;最大乳酸得率和总氮去除率分别为0.66g/g和55%.鱼粉废水中较高浓度氯化钠(NaCl)能抑制菌株生长,降低其产酸能力.当NaCl浓度大于12g/L时,菌株生长被完全抑制,产酸能力完全丧失.Lactic acid production integrated with fishmeal wastewater treatment by Rhizopus oryzae AS 3. 254 was investigated. The concentrations of glucose and NaCl could affect the production of lactic acid and bionmss formation. The addition of 30 g/ L glucose in fishmeal wastewater for 72 hours＇ fermentation could lead to 97.8% CODcr reduction, 19.4 g/L production of lactic acid and 3.56 g/L bionmss yield, with the maximum production of lactic acid and the removal rate of total nitrogen being 0. 66 g/g and 55% , respectively. High NaCl concentration inhibited the fungal growth and lactic acid production. Consequently, 12 g/L NaCl could completely restrain the growth of R. oryzae AS 3. 254, as well as its capability of producing lactic acid. Fig 4, Tab 1, Ref 20

关 键 词：鱼粉废水 米根霉 乳酸 生物量 葡萄糖 NACL 

分 类 号：X703[环境科学与工程—环境工程]