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NaOH活化栗苞生物质炭对亚甲基蓝的吸附性能

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昌晶, 王丽萍, 田红景. NaOH活化栗苞生物质炭对亚甲基蓝的吸附性能[J]. 环境工程学报, 2016, 10(10): 5373-5379. doi: 10.12030/j.cjee.201602128
引用本文: 昌晶, 王丽萍, 田红景. NaOH活化栗苞生物质炭对亚甲基蓝的吸附性能[J]. 环境工程学报, 2016, 10(10): 5373-5379. doi: 10.12030/j.cjee.201602128
shu
CHANG Jing, WANG Liping, TIAN Hongjing. Adsorption ability of methylene blue on NaOH activated chestnut-bud bio-char[J]. Chinese Journal of Environmental Engineering, 2016, 10(10): 5373-5379. doi: 10.12030/j.cjee.201602128
Citation: CHANG Jing, WANG Liping, TIAN Hongjing. Adsorption ability of methylene blue on NaOH activated chestnut-bud bio-char[J]. Chinese Journal of Environmental Engineering, 2016, 10(10): 5373-5379. doi: 10.12030/j.cjee.201602128
shu

NaOH活化栗苞生物质炭对亚甲基蓝的吸附性能

  • 1.

    青岛农业大学资源与环境学院, 青岛 266109

  • 2.

    北京化工大学化工资源有效利用国家重点实验室, 北京 100029

  • 3.

    青岛科技大学化工学院, 青岛 266042

  • 基金项目:

    国家自然科学基金资助项目（51608291，51106077）

    山东省自然科学基金资助项目（ZR2015PE026）

    北京化工大学化工资源有效利用国家重点实验室开放课题（CRE-2013-C-302）

  • 中图分类号: X703

Adsorption ability of methylene blue on NaOH activated chestnut-bud bio-char

  • 1.

    College of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, China

  • 2.

    State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China

  • 3.

    College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao 266042, China

  • Fund Project:

摘要

  • 摘要: 以栗苞炭化料（C-BC）为原料，以NaOH为活化剂制备栗苞活化生物质炭（Na-BC），研究其对水中亚甲基蓝的吸附行为。选取炭碱比、活化温度和活化时间为影响因素，通过正交试验确定了最佳活化工艺，即炭碱比为1：4，活化温度为800℃，活化时间为30 min，此时Na-BC的最大吸附量为609.38 mg·g-1。对最优条件下制备的生物质炭进行SEM、BET等表征，比表面积达1 563.78 m2·g-1，总孔容达1.452 cm3·g-1。吸附实验结果显示，吸附反应能较好用Langmuir模型和准二级动力学方程模型进行模拟，Na-BC对亚甲基蓝的吸附为自发吸热反应。通过热法与碱法再生处理饱和吸附生物质炭，再生后的Na-BC对亚甲基蓝具有较好的吸附能力。
    Abstract: Activated bio-char (Na-BC) was prepared by the activation of chestnut bud bio-char (C-BC) using NaOH,and its adsorption behavior towards methylene blue in water was examined.The optimum activation conditions,namely the alkali carbon ratio (1:4),activation temperature (800℃),and activation time (30 min),were determined by orthogonal testing.Under these conditions,the maximum adsorption capacity of Na-BC was 609.38 mg·g-1.The prepared Na-BC particles were characterized using scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) analysis.The BET surface area and the total pore volume were 1 563.78 m2·g-1 and 1.452 cm3·g-1,respectively.In the adsorption tests,the kinetic curves of Na-BC fit well with the pseudo second-order kinetics model,while the equilibrium isotherm data fit well with the Langmuir equation.Furthermore,the adsorption of methylene blue on Na-BC is a spontaneous endothermic reaction.Finally,following regeneration of Na-BC by alkaline solution and thermal treatment,Na-BC continued to exhibit a high adsorption capacity for methylene blue.
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  • 收稿日期:  2016-05-04
  • 刊出日期:  2016-10-20
昌晶, 王丽萍, 田红景. NaOH活化栗苞生物质炭对亚甲基蓝的吸附性能[J]. 环境工程学报, 2016, 10(10): 5373-5379. doi: 10.12030/j.cjee.201602128
引用本文: 昌晶, 王丽萍, 田红景. NaOH活化栗苞生物质炭对亚甲基蓝的吸附性能[J]. 环境工程学报, 2016, 10(10): 5373-5379. doi: 10.12030/j.cjee.201602128
shu
CHANG Jing, WANG Liping, TIAN Hongjing. Adsorption ability of methylene blue on NaOH activated chestnut-bud bio-char[J]. Chinese Journal of Environmental Engineering, 2016, 10(10): 5373-5379. doi: 10.12030/j.cjee.201602128
Citation: CHANG Jing, WANG Liping, TIAN Hongjing. Adsorption ability of methylene blue on NaOH activated chestnut-bud bio-char[J]. Chinese Journal of Environmental Engineering, 2016, 10(10): 5373-5379. doi: 10.12030/j.cjee.201602128
shu

NaOH活化栗苞生物质炭对亚甲基蓝的吸附性能

  • 1.  青岛农业大学资源与环境学院, 青岛 266109
  • 2.  北京化工大学化工资源有效利用国家重点实验室, 北京 100029
  • 3.  青岛科技大学化工学院, 青岛 266042
  • 收稿日期:  2016-05-04
基金项目:

国家自然科学基金资助项目（51608291，51106077）

山东省自然科学基金资助项目（ZR2015PE026）

北京化工大学化工资源有效利用国家重点实验室开放课题（CRE-2013-C-302）

摘要: 以栗苞炭化料（C-BC）为原料，以NaOH为活化剂制备栗苞活化生物质炭（Na-BC），研究其对水中亚甲基蓝的吸附行为。选取炭碱比、活化温度和活化时间为影响因素，通过正交试验确定了最佳活化工艺，即炭碱比为1：4，活化温度为800℃，活化时间为30 min，此时Na-BC的最大吸附量为609.38 mg·g-1。对最优条件下制备的生物质炭进行SEM、BET等表征，比表面积达1 563.78 m2·g-1，总孔容达1.452 cm3·g-1。吸附实验结果显示，吸附反应能较好用Langmuir模型和准二级动力学方程模型进行模拟，Na-BC对亚甲基蓝的吸附为自发吸热反应。通过热法与碱法再生处理饱和吸附生物质炭，再生后的Na-BC对亚甲基蓝具有较好的吸附能力。

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