BIOLOGICAL CHARACTERISTICS OF MICROBIAL STRATEGIES, APPLICATIONS FOR PRODUCTION TO REDUCE AIR POLLUTION  IN LIVESTOCK AREAS

Nguyễn Hà Trung; Lê Huy Hoàng; Phạm Kiên Cường; Nguyễn Thị Tâm Thư

doi:10.34238/tnu-jst.8999

BIOLOGICAL CHARACTERISTICS OF MICROBIAL STRATEGIES, APPLICATIONS FOR PRODUCTION TO REDUCE AIR POLLUTION IN LIVESTOCK AREAS

About this article

Received: 18/10/23 Revised: 05/01/24 Published: 03/02/24

Authors

1. Nguyen Ha Trung, Institute of New Technology/ Academy of Military Science and Technology
2. Le Huy Hoang, Institute of New Technology/ Academy of Military Science and Technology
3. Pham Kien Cuong, Institute of New Technology/ Academy of Military Science and Technology
4. Nguyen Thi Tam Thu , Institute of New Technology/ Academy of Military Science and Technology

Abstract

The environment and human health are seriously affected by the odor which produced from fermentation of livestock manure. NH₃ and H₂S are the two main components which cause the problem. In order to reduce the odor pollution caused by livestock manure, efficient strains were isolated from swine manure (faeces, urine) in this study. Then, according to ammonia and hydrogen sulfide removal effects, the high efficiency of deodorizing strains was screened. Four strains isolated were identified as Paracoccus sp. N1, Saccharomyces sp. TB2, Bacillus sp. S3, Trichoderma sp. TB1. These strains have the capability to reduce NH₃ odor from 18.45% to 56.44% and H₂S odor from 21.98% to 59.92%. A mixture of these strains in a 1:1:1:1 (v/v) ratio at the concentration of 10⁸ CFU/mL reduces waste odor, NH₃, and H₂S gases by 66.54% and 66.67% after 24 hours of treatment, 78.47% and 81.58% after 72 hours, and 84.69% and 86.67% after 120 hours compared to the control. These results provide the basis for applying the production of livestock waste odor control products in concentrated farming areas.

Keywords

Microorganisms; NH3; H2S; Odor removal; Livestock waste

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DOI: https://doi.org/10.34238/tnu-jst.8999

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