Xiaoshan Jia

Publications (2)5.77 Total impact

• Article: The addition of modified attapulgite reduces the emission of nitrous oxide and ammonia from aerobically composted chicken manure.

  Kaizhi Xie, Xiaoshan Jia, Peizhi Xu, Xu Huang, Wenjie Gu, Fabao Zhang, Shaohai Yang, Shuanhu Tang
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  ABSTRACT: The acceleration of the composting process and the improvement of compost quality have been explored by evaluating the efficacy of various additives, inoculating with specific microorganisms and the application of various biosurfactants. The magnesium-aluminum silicate attapulgite is a low-cost potential composting additive, but its effects on aerobic composting are unknown. This study investigated the effects of attapulgite application on compost production and quality during the aerobic composting of chicken manure. Addition of attapulgite significantly increased the temperature (p < 0.05) while it reduced compost total organic carbon (TOC) and seed germination indices (GIs) throughout the process. Its addition enhanced nitrate concentrations, promoted organic matter degradation, increased seed germination indices, and accelerated the composting process. Interestingly, attapulgite addition did not increase the population of ammonia-oxidizing bacteria. These results suggest that attapulgite is a good additive for the composting industry. Implications: We investigated the addition of two forms of attapulgite during aerobic composting of chicken manure to determine their effects under strict composting environmental parameter control. Our results provides primary evidence that attapulgite may have potential for application in the composting industry. All treatments showed no increase within the first 15 days. However, emissions increased for all treatments within 15-45 days, reaching approximately 6300, 2000, and 4000 mg/m2 from the control, artifactitious attapulgite, and raw attapulgite treatments, respectively.
  Journal of the Air & Waste Management Association (1995) 10/2012; 62(10):1174-81. · 1.52 Impact Factor
• Article: Improved composting of poultry feces via supplementation with ammonia oxidizing archaea.

  Kaizhi Xie, Xiaoshan Jia, Peizhi Xu, Xu Huang, Wenjie Gu, Fabao Zhang, Shaohai Yang, Shuanhu Tang
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  ABSTRACT: Ammonia-oxidizing archaea (AOA) play an important role in the oxidation of ammonia. However, the participation of AOA in the composting process has not been established. The addition of AOA to a compost mix was able to speed up both the onset of the hyperthermic phase and the composting time. The composition of the microflora and the relative abundance were determined by using denaturing gradient gel electrophoresis and quantitative real-time PCR, based on the presence of the archaeal amoA genes. The amplicon profiles allowed some of the major AOA species present in the final compost to be identified, and their relative abundance to be estimated from their amplification intensity. The lower pH during the lower temperature phase of compost served to enhance the nitrogen content of the final compost. The addition of AOA resulted in the expanding diversity of microflora species than that of the natural colonization.
  Bioresource technology 06/2012; 120:70-7. · 4.25 Impact Factor