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Contribution of Acid Additive to Co-Composting of Chicken Manure: Gas Emission Reduction and Economic Assessment

Author

Listed:
  • Wentao Xue

    (Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
    These authors contributed equally to this work and should be considered co-first authors.)

  • Mao Li

    (College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China
    These authors contributed equally to this work and should be considered co-first authors.)

  • Ling Zhang

    (Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China)

  • Qinping Sun

    (Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China)

  • Shanjiang Liu

    (Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China)

  • Hao Sun

    (Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China)

  • Rong Wu

    (Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China)

  • Guoyuan Zou

    (Institute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China)

  • Na Duan

    (College of Water Resources and Civil Engineering, China Agricultural University, Beijing 100083, China)

Abstract

Acidic additives have garnered significant attention due to their ability to reduce ammonia (NH 3 ) emissions, enhance nitrogen retention, and balance function with cost-effectiveness. This study aimed to investigate the potential of oxalic acid (OA) in reducing gas emissions, promoting compost humification, and enhancing nutrient retention during the co-composting of chicken manure. Moreover, the comparative analysis of the effects and the economic benefits was conducted among OA groups with varying concentrations (OA1: 0.03 mol·kg −1 , OA2: 0.10 mol·kg −1 , and OA3: 0.15 mol·kg −1 ) and a sulfuric acid (SA) group (SA1: 0.03 mol·kg −1 ). The results indicated that the addition of OA can extend the thermophilic phase to some extent and achieve the required composting maturity. As the amount of OA increased, the NH 3 emissions ( p < 0.05) and the total nitrogen loss rate was decreased; however, this also increased the cost. No significant difference in the total nitrogen loss rate was observed between SA1 and OA1 ( p < 0.05). It is worth noting that the addition of SA increased the SO 4 2− content, leading to an increase of 113.52% in H 2 S emissions. In contrast, the addition of OA resulted in a reduction in H 2 S emissions by 29.92–45.90%. In terms of economic analysis, OA1 was the most effective (OA1 > OA2 > OA3 > SA1). Thereby, OA was proved to be a good alternative for SA in the co-composting of chicken manure, and 0.03 mol·kg −1 OA is recommended.

Suggested Citation

  • Wentao Xue & Mao Li & Ling Zhang & Qinping Sun & Shanjiang Liu & Hao Sun & Rong Wu & Guoyuan Zou & Na Duan, 2025. "Contribution of Acid Additive to Co-Composting of Chicken Manure: Gas Emission Reduction and Economic Assessment," Agriculture, MDPI, vol. 15(4), pages 1-22, February.
    • Handle: RePEc:gam:jagris:v:15:y:2025:i:4:p:425-:d:1593781
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    References listed on IDEAS

    as
    1. Yue Wang & Shanjiang Liu & Wentao Xue & He Guo & Xinrong Li & Guoyuan Zou & Tongke Zhao & Hongmin Dong, 2019. "The Characteristics of Carbon, Nitrogen and Sulfur Transformation During Cattle Manure Composting—Based on Different Aeration Strategies," IJERPH, MDPI, vol. 16(20), pages 1-18, October.
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