您好，欢迎访问中国热带农业科学院 机构知识库！
中国热带农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Sorption of Atrazine in Tropical Soil by Biochar Prepared from Cassava Waste

文献类型： 外文期刊

作者： Deng, Hui 1 ; Yu, Huamei 3 ; Chen, Miao 4 ; Ge, Chengjun 1 ;

作者机构： 1.Hainan Univ, Key Lab Protect & Dev Utilizat Trop Crop Germplas, Minist Educ, Haikou 570228, Peoples R China

2.Hainan Univ, Dept Environm Sci, Haikou 570228, Peoples R China

3.China Univ Min & Technol, Sch Chem & Environm Engn, Beijing 100083, Peoples R China

4.Chinese Acad Trop Agr Sci, Inst Environm & Plant Protect, Haikou 571101, Peoples R China

关键词： Sorption;Biochars;Cassava wastes;Atrazine;Paddy soil

期刊名称：BIORESOURCES （ 影响因子：1.614； 五年影响因子：1.923 ）

ISSN： 1930-2126

年卷期： 2014 年 9 卷 4 期

页码：

收录情况： SCI

摘要： Biochar (BC) is a carbonaceous and porous product generated from the incomplete combustion of biomass and has been recognized as an efficient adsorbent. This study evaluated the ability of BC to sorb atrazine pesticide in tropical soil, and explored potential environmental values of BC on mitigating organic micro-pollutants. BC was produced from cassava waste via pyrolyzation under oxygen-limiting conditions at 350, 550, and 750 degrees C (MS350, MS550, and MS750, respectively). Three biochars were characterized and investigated as sorbents for the removal atrazine from tropical soil. BC pyrolyzed at higher temperatures more quickly reached equilibrium. The pseudo-second-order model perfectly simulated the sorption kinetics for atrazine with the coefficients R-2 above 0.996, and the sorption amount at equilibrium (q(e)) was 0.016 mg/g for MS350, 0.025 mg/g for MS550 and 0.050 mg/g for MS750. The isotherms of MS350 displayed relatively linear behavior, whereas the sorption of atrazine on MS550 and MS750 followed a nonlinear isotherm. The sorption data were well described by the Freundlich model with logK(F) of 0.476 for MS350, 0.771 for MS550, 1.865 for MS750. A thermodynamic study indicated that the sorption of atrazine in BC-added soil was a spontaneous and endothermic process and was primarily controlled by physisorption. In addition, lower pH was conducive to the sorption of atrazine in BC-added soil.

  • 相关文献

[1]Effects of flooding and ferrhydrite on copper fractionation in paddy soil. Dong Qu,Xin Chen,Qinfen Li,Lixu Peng,Beibei Liu. 2013

[2]Influence of dissolved organic matter on sorption and desorption of MCPA in ferralsol. Wu, Dongming,Yun, Yonghuan,Jiang, Lei,Wu, Chunyuan,Jiang, Lei,Wu, Chunyuan,Wu, Chunyuan. 2018

[3]The environmental fate of thymol, a novel botanical pesticide, in tropical agricultural soil and water. Liu, Beibei,Zhang, Jing,Feng, Gang,Liu, Beibei,Chen, Bing,Wang, Ping.

[4]Sorption of Atrazine by Biochar Prepared from Manioc Wastes in Tropical Soils. Deng, Hui,Ge, Chengjun,Yu, Huamei,Chen, Miao,Chen, Miao. 2014

[5]Effects of flooding and ferrhydrite on copper fractionation in paddy soil. Liu, Beibei,Chen, Xin,Li, Qinfen,Peng, Lixu,Liu, Beibei,Chen, Xin,Li, Qinfen,Peng, Lixu,Liu, Beibei,Chen, Xin,Li, Qinfen,Peng, Lixu,Qu, Dong. 2013

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国热带农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台