›› 2018, Vol. 30 ›› Issue (4): 632-639.DOI: 10.3969/j.issn.1004-1524.2018.04.15

• Environmental Science • Previous Articles     Next Articles

Effect of rice straw derived biochar addition on adsorption and degradation of androstenedione

WANG Daiyi1, ZHANG Fengsong2, *, PAN Juan1, LIU Denglu3, GOU Tizhong1   

  1. 1. Institute of Comprehensive Utilization of Plant Resources, Kaili University, Kaili 556011, China;
    2. Institute of Geographic Sciences and Natural Resource Research, Beijing 100101, China;
    3. Sichuan Institute of Coal Field Geological Engineering Exploration and Designing, Chengdu 610072 China
  • Received:2017-07-31 Online:2018-04-20 Published:2018-04-19

Abstract: The effects of rice straw biochar on the sorption and degradation of androstenedione in soils were studied by both batch equilibrium experiment and incubation experiment. The results showed that sorption coefficients (Kf) of cinnamon soil and alluvial soil were increased by 121.5% and 32.8%, respectively, after biochar addition. Degradation kinetics of androstenedione in control soils and biochar amended soils were well fitted with the first-order kinetics equation. The half-lives of androstenedione in cinnamon soil and alluvial soil amended with biochar were increased by 71.8% and 52.7%, respectively. The androstenedione in soils would keep for longer time as biochar added. However, the enhancement of androstenedione sorption ability to soils by adding biochar would likely to reduce the transportation of androstenedione to water.

Key words: androstenedione, sorption, degradation, biochar

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