南京师范大学学报（工程技术版）2018，Vol.18Issue(1)：86-92,7.DOI:10.3969/j.issn.1672-1292.2018.01.012
改性生物质炭对水溶液中Hg2+的吸附性能研究
The Investigation of Modified Biochar's Adsorption Performance on Hg2+in Solution
摘要
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+.关键词
生物质炭/改性/Hg2+/吸附Key words
biomass carbon/modified/Hg2+/adsorb分类
资源环境引用本文复制引用
赫斌,陈亚君,林军,王风贺,李明海..改性生物质炭对水溶液中Hg2+的吸附性能研究[J].南京师范大学学报（工程技术版）,2018,18(1):86-92,7.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) （41473071）
