›› 2017, Vol. 29 ›› Issue (12): 2104-2108.DOI: 10.3969/j.issn.1004-1524.2017.12.20

• Environmental Science • Previous Articles     Next Articles

Effects of composting temperature and manner on degradation of natural hormones during cattle manure composting

WANG Daiyi1, YU Yang2, ZHANG Fengsong3, *, LI Xingyuan1, GOU Tizhong1   

  1. 1. Institute of Comprehensive Utilization of Plant Resources, Kaili University, Kaili 556011, China;
    2. China Institute of Geo-Environment Monitoring, Beijing 100081, China;
    3. Institute of Geographic Sciences and Natural Resource Research, Beijing 100101, China
  • Received:2017-06-13 Online:2017-12-20 Published:2018-01-08

Abstract: In order to achieve the innocuous treatment and resource utilization of livestock manure, fresh cow dung and straw were used as pile materials. Four types of hormone (progesterone , androstenedione, 17β-estradiol and estrone) were incubated in cow dung under different temperature (38, 50, 70 ℃) to study the influence of composting temperature on the degradation rate of 4 hormones under either aerobic or anaerobic composting conditions. It was shown that the degradation rate of 4 hormones ranged from 67.6% to 100% under different temperature, and the degradation rate ranged from 81.9% to 100% at 50 ℃. The degradation rate of estrone and androstenedione were higher under aerobic composting than that under anaerobic composting. The tested temperature (38-70 ℃) had little effect on degradation of 17β-estradiol, progesterone and androstenedione in cow dung. But, the degradation of estrone was inhibited under 70 ℃. Giving compost maturity and removal of disease-causing organisms, aerobic composting under 50 ℃ seemed to be the best option.

Key words: natural hormones, composting, degradation

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