Elucidating adsorption mechanism of super-fine powdered activated carbon by isotope-imaging

通过同位素成像阐明超细粉状活性炭的吸附机理

• 批准号: 23656323
• 负责人: MATSUI Yoshihiko
• 金额: $ 2.41万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23656323/
• 关键词: 用排水システム; 環境技術; 環境材料; 土木環境システム; 反応・分離工学; 水資源; 土木環境ｼｽﾃﾑ; 反応・分離工

Geosmin and 2-methylisoborneol (MIB) adsorption capacity dependency on activated carbon particle size was investigated for two carbons. By using the isotope microscope system and carbon particles loaded with deuterium-doped MIB and geosmin, isotopic maps for deuterium/hydrogen ratio as a maker of MIB and geosmin were obtained. For a carbon in which the adsorption capacity to adsorb MIB and geosmin increased with decreasing carbon particle size, deuterium/hydrogen ratio was high on the exterior region close to the particle outer-surface compared with inner region. The result indicated the higher MIB and geosmin adsorption capacities on super-fine powdered activated carbon than on normal-size powdered activated carbon is explained by the shell adsorption mechanism. When MIB and geosmin adsorbs in internal pores of activated carbon particles, adsorption competition between natural organic matter (NOM) and these compounds does not increase when NOM uptake increased due to carbon size reduction.

研究了两种活性炭对土臭素和2-甲基异黄酮（MIB）的吸附容量与活性炭粒径的关系。利用同位素显微镜系统和负载氘掺杂MIB和土臭素的碳颗粒，获得了作为MIB和土臭素标记的氘/氢比的同位素图谱。对于吸附MIB和土臭素的吸附能力随着碳颗粒尺寸的减小而增加的碳，与内部区域相比，在靠近颗粒外表面的外部区域上氘/氢比高。结果表明，超细粉末活性炭对MIB和土臭素的吸附能力明显高于普通粉末活性炭，其吸附机理主要为壳吸附机理。当MIB和土臭素吸附在活性炭颗粒的内部孔隙中时，天然有机物（NOM）和这些化合物之间的吸附竞争不会增加，当NOM吸收增加时，由于碳尺寸减小。

项目成果

Comparison of 2-methylisoborneol adsorption capacities on super-powdered and powdered activated carbonInternational Water Association

超粉活性炭和粉状活性炭对 2-甲基异龙脑吸附能力的比较国际水协会

• 发表时间: 2011
• 作者: Matsui;Y.;Taniguchi;T.;Nakao;S.;MatsushitaT. and Shirasaki;N
• 通讯作者: N

Natural organic matter that penetrates or does not penetrate activated carbon and competes or does not compete with geosmin

• DOI: 10.1016/j.seppur.2013.04.009
• 发表时间: 2013-07
• 期刊: Separation and Purification Technology
• 影响因子: 8.6
• 作者: Y. Matsui;S. Nakao;Tomoaki Yoshida;Takuma Taniguchi;T. Matsushita

Enhanced removal of 2-MIB and geosmin by super-fine PAC: Evidence of shell adsorption.

超细 PAC 增强去除 2-MIB 和土臭味素：壳吸附的证据。

• 发表时间: 2013
• 作者: 1.Matsui;Y.;Nakao;S.;Taniguchi;T.;Sakamoto;A.;Shirasaki;N. and Matsushita;T.
• 通讯作者: T.