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牛粪生物炭对Cd2+的吸附影响因素及特性

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王丹丹, 林静雯, 张岩, 王禹川, 孙丽娜, 王英刚. 牛粪生物炭对Cd2+的吸附影响因素及特性[J]. 环境工程学报, 2015, 9(7): 3197-3203. doi: 10.12030/j.cjee.20150720
引用本文: 王丹丹, 林静雯, 张岩, 王禹川, 孙丽娜, 王英刚. 牛粪生物炭对Cd2+的吸附影响因素及特性[J]. 环境工程学报, 2015, 9(7): 3197-3203. doi: 10.12030/j.cjee.20150720
shu
Wang Dandan, Lin Jingwen, Zhang Yan, Wang Yuchuan, Sun Lina, Wang Yinggang. Cd2+ adsorption influential factors and performance of dairy dung biochar[J]. Chinese Journal of Environmental Engineering, 2015, 9(7): 3197-3203. doi: 10.12030/j.cjee.20150720
Citation: Wang Dandan, Lin Jingwen, Zhang Yan, Wang Yuchuan, Sun Lina, Wang Yinggang. Cd2+ adsorption influential factors and performance of dairy dung biochar[J]. Chinese Journal of Environmental Engineering, 2015, 9(7): 3197-3203. doi: 10.12030/j.cjee.20150720
shu

牛粪生物炭对Cd2+的吸附影响因素及特性

  • 1.

    沈阳大学环境学院, 沈阳 110044

  • 基金项目:

    国家"水体污染控制与治理"重大专项(2012ZX07505-002)

    科技部中德科技合作项目(S2012ZR01912)

  • 中图分类号: X52

Cd2+ adsorption influential factors and performance of dairy dung biochar

  • 1.

    College of Environment, Shenyang University, Shengyang 110044, China

  • Fund Project:

  • 摘要: 为了考察以牛粪为原料制备的生物炭对水溶液中Cd2+的吸附效果,进行了吸附影响因素、吸附等温线和动力学研究。结果表明,当热解温度为700℃、投加量为20 g/L、溶液初始pH为5、水溶液Cd2+初始浓度为10 mg/L、吸附平衡时间为60 min和溶液温度为25℃时,对Cd2+的吸附效果最佳,Cd2+去除率可达99%以上。提高溶液温度有利于吸附。降低生物炭热解温度和投加量对吸附效果影响不大。Langmuir方程能更好地拟合生物炭对Cd2+的吸附等温过程,吸附过程符合准二级动力学方程。牛粪生物炭是性能优良、价格经济的水溶液中Cd2+的吸附剂。
    Abstract: In order to explore the adsorption effect of biochar with dairy dung as raw material preparation to Cd2+ inaqueous solution,the factors that affect the adsorption,adsorption isotherm model and kinetics of the adsorption process were studied.Results showed that the adsorption efficiency of biochar to Cd2+ was optimal and Cd2+ removal rate reached more than 99% as the pyrolysis temperature reached 700℃,the dosage of adsorbent was 20 g/L,the pH value of initial solution was 5,initial Cd2+ concentration was 10 mg/L,the adsorption equilibrium time was 60 minutes and solution temperature reached 25℃.Increasing the solution temperature was favorable to the adsorption efficiency.Decreasing thebiochar pyrolysis temperature and dosing quantity had a weakly affecting on adsorption efficiency.Langmuir equation could better imitate the isothermal process of biochar to Cd2+ adsorption,adsorption process could be fitted by the puasi-second order equation.Dairy dung biochar is better and economical adsorbent to aqueous solution Cd2+.
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  • 收稿日期:  2014-09-23
  • 刊出日期:  2015-07-02
王丹丹, 林静雯, 张岩, 王禹川, 孙丽娜, 王英刚. 牛粪生物炭对Cd2+的吸附影响因素及特性[J]. 环境工程学报, 2015, 9(7): 3197-3203. doi: 10.12030/j.cjee.20150720
引用本文: 王丹丹, 林静雯, 张岩, 王禹川, 孙丽娜, 王英刚. 牛粪生物炭对Cd2+的吸附影响因素及特性[J]. 环境工程学报, 2015, 9(7): 3197-3203. doi: 10.12030/j.cjee.20150720
shu
Wang Dandan, Lin Jingwen, Zhang Yan, Wang Yuchuan, Sun Lina, Wang Yinggang. Cd2+ adsorption influential factors and performance of dairy dung biochar[J]. Chinese Journal of Environmental Engineering, 2015, 9(7): 3197-3203. doi: 10.12030/j.cjee.20150720
Citation: Wang Dandan, Lin Jingwen, Zhang Yan, Wang Yuchuan, Sun Lina, Wang Yinggang. Cd2+ adsorption influential factors and performance of dairy dung biochar[J]. Chinese Journal of Environmental Engineering, 2015, 9(7): 3197-3203. doi: 10.12030/j.cjee.20150720
shu

牛粪生物炭对Cd2+的吸附影响因素及特性

  • 1. 沈阳大学环境学院, 沈阳 110044
  • 收稿日期:  2014-09-23
基金项目:

国家"水体污染控制与治理"重大专项(2012ZX07505-002)

科技部中德科技合作项目(S2012ZR01912)

摘要: 为了考察以牛粪为原料制备的生物炭对水溶液中Cd2+的吸附效果,进行了吸附影响因素、吸附等温线和动力学研究。结果表明,当热解温度为700℃、投加量为20 g/L、溶液初始pH为5、水溶液Cd2+初始浓度为10 mg/L、吸附平衡时间为60 min和溶液温度为25℃时,对Cd2+的吸附效果最佳,Cd2+去除率可达99%以上。提高溶液温度有利于吸附。降低生物炭热解温度和投加量对吸附效果影响不大。Langmuir方程能更好地拟合生物炭对Cd2+的吸附等温过程,吸附过程符合准二级动力学方程。牛粪生物炭是性能优良、价格经济的水溶液中Cd2+的吸附剂。

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