[1]赫 斌,陈亚君,林 军,等.改性生物质炭对水溶液中Hg的吸附性能研究[J].南京师范大学学报(工程技术版),2018,18(01):086.[doi:10.3969/j.issn.1672-1292.2018.01.012]
 He Bin,Chen Yajun,Lin Jun,et al.The Investigation of Modified Biochar’s AdsorptionPerformance on Hg in Solution[J].Journal of Nanjing Normal University(Engineering and Technology),2018,18(01):086.[doi:10.3969/j.issn.1672-1292.2018.01.012]
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改性生物质炭对水溶液中Hg2+的吸附性能研究
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南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
18卷
期数:
2018年01期
页码:
086
栏目:
化学工程
出版日期:
2018-03-31

文章信息/Info

Title:
The Investigation of Modified Biochar’s AdsorptionPerformance on Hg2+ in Solution
文章编号:
1672-1292(2018)01-0086-07
作者:
赫 斌1陈亚君2林 军13王风贺2李明海1
(1.南京师范大学化学与材料科学学院,江苏 南京 210023)(2.南京师范大学环境学院,江苏 南京 210023)(3.南京师范大学常州创新发展研究院,江苏 常州 213000)
Author(s):
He Bin1Chen Yajun2Lin Jun13Wang Fenghe2Li Minghai1
(1.School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210023,China)(2.School of Environment,Nanjing Normal University,Nanjing 210023,China)(3.Changzhou Institute of Innovation and Development,Nanjing Normal University,Changzhou 213000,China)
关键词:
生物质炭改性Hg2+吸附
Keywords:
biomass carbonmodifiedHg2+adsorb
分类号:
X703
DOI:
10.3969/j.issn.1672-1292.2018.01.012
文献标志码:
A
摘要:
制备了KOH改性低温生物质炭(low temperature biochar modified by potassium hydroxide,BC-P)、KOH改性高温生物质炭(high temperature biochar modified by potassium hydroxide,HC-P)、NaHS改性低温生物质炭(low temperature biochar modified by sodium hydrosulfide,BC-S)、NaHS改性高温生物质炭(high temperature biochar modified by sodium hydrosulfide,HC-S),并研究了溶液pH、吸附剂投加量、吸附温度和Hg2+浓度等因素对上述 4种改性生物质炭吸附水溶液中Hg2+的影响. 结果表明,BC-S对Hg2+吸附效果最好,在pH为4、温度为298 K、投加量为1.2 g/L时,对10.0 mg/L的Hg2+溶液中Hg2+吸附量为8.48 mg/g,去除率达到97.89%. 准二级动力学能很好地描述BC-S对Hg2+的吸附动力学过程,其等温吸附过程符合Langmuir吸附等温线,吸附热力学表明298 K最有利于BC-S吸附Hg2+.
Abstract:
The low temperature biomass carbon modified by KOH(BC-P),high temperature biomass carbon modified by KOH(HC-P),low temperature biomass carbon modified by NaHS(BC-S)and high temperature biomass carbon modified by NaHS(HC-S)are prepared respectively. The influence of solution pH,adsorbents dosage,temperature and initial concentration of Hg2+ on the adsorption of Hg2+ of the four modified adsorbents are discussed. The results show that the adsorption capacity of BC-S is better than the other adsorbents. The maximum adsorption amounts is 8.48 mg/g and the removal percentage is 97.89% at the condition of pH 4,dosage 1.2 g/L and temperature 298 K. The pseudo-second-order model can describe the adsorption kinetic of BC-S on Hg2+ well and the adsorption behavior follows Langmuir model. Adsorption thermodynamics show that 298 K is the most favorable temperature to adsorb Hg2+.

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备注/Memo

备注/Memo:
收稿日期:2018-01-15.
基金项目:国家自然科学基金(41473071)、江苏省产学研前瞻性联合研究项目(BY2016001-03)、江苏省高校自然科学研究重大项目(16KJA610001).
通讯联系人:林军,博士,教授,研究方向:化工分离、废弃资源综合利用. E-mail:linjun@njnu.edu.cn
更新日期/Last Update: 1900-01-01