China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (8): 2684-2693.doi: 10.16431/j.cnki.1671-7236.2020.08.039

• Environmental Safety • Previous Articles    

Study on Optimizing the Effectiveness of Microbial Deodorization by Response Surface Methodology

SHAO Shuan1,2, DANG Xiaowei3, LI Huijuan4, CHANG Juan1, WANG Ping1, YIN Qingqiang1, GAO Tianzeng5   

  1. 1. College of Animal Science and Veterinary Medicine, Zhengzhou 450002, China;
    2. Manasi Bureau of Agriculture and Rural Affairs, Changji 832200, China;
    3. Henan Delin Biological Product Co., Ltd., Xinxiang 453000, China;
    4. Zhengzhou Breeding Farm of Henan Province, Zhengzhou 450011, China;
    5. Henan Guangan Biotechnology Co., Ltd., Zhengzhou 450001, China
  • Received:2019-12-09 Online:2020-08-20 Published:2020-08-15

Abstract: In order to reduce the odor pollution caused by livestock and poultry manure,four species of microbes with deodorization function such as Bacillus velezensis, Bacillus subtilis,Candida utilis and Lactobacillus casei were selected as 4 factors of experimental design in this study.The corresponding viable counts used in pig manure were 1×104,1×105,and 1×106 CFU/g as the three coding levels of the response surface design.In order to obtain an ideal microbial inoculation proportion for fecal deodorization,4 factors and 3 levels were used to construct 29 combinations of microorganisms in Box-Behnke design for removing indole,NH3 and H2S in feces.The results showed that the optimal ratio of Bacillus velezensis,Bacillus subtilis,Candida utilis and Lactobacillus casei obtained by response surface optimization were 0.47%,0.05%,0.01% and 1.00% at the concentration of 1×108 CFU/mL,respectively.After 7 d microbial fermentation,the removal rates of indole,NH3 and H2S in pig feces were 73.59%,63.60% and 70.29%,respectively.It could be concluded that an ideal compound microbial preparation for pig fecal innocent treatment had been obtained in this study,which provided the high application value to control the odor pollution caused by livestock and poultry manure.

Key words: manure; indole; ammonia; hydrogen sulfide; microbial fermentation; deodorization

CLC Number: