DOI: 10.1016/j.watres.2018.01.015
Scopus记录号: 2-s2.0-85041419744
论文题名: Influence of dissolved organic matter and activated carbon pore characteristics on organic micropollutant desorption
作者: Aschermann G. ; Zietzschmann F. ; Jekel M.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 133 起始页码: 123
结束页码: 131
语种: 英语
英文关键词: Activated carbon
; Adsorption
; Desorption
; Dissolved organic matter
; Drinking water
; Organic micropollutants
Scopus关键词: Activated carbon
; Adsorption
; Biogeochemistry
; Biological materials
; Dissolution
; Organic compounds
; Pore size
; Potable water
; Adsorption and desorptions
; Background solutions
; Displacement process
; Dissolved organic matters
; Organic micro-pollutants
; Organic micropollutant
; Pore blockages
; Pore characteristics
; Desorption
; activated carbon
; carbamazepine
; diclofenac
; dissolved organic matter
; drinking water
; sulfamethoxazole
; carbon
; organic compound
; activated carbon
; adsorption
; desorption
; displacement
; dissolved organic matter
; drinking water
; inflow
; laboratory method
; organic pollutant
; pore space
; porous medium
; size distribution
; adsorption
; Article
; chemical analysis
; desorption
; laboratory test
; organic micropollutant desorption
; particle size
; priority journal
; surface area
; waste water treatment plant
; water contamination
; water pollutant
; chemistry
; water management
; water pollutant
; Adsorption
; Carbon
; Organic Chemicals
; Water Pollutants, Chemical
; Water Purification
英文摘要: By simulating decreasing inflow concentrations, the extent of desorption of organic micropollutants (OMP) from three activated carbons (AC) was examined in laboratory batch tests. The tested AC showed strong differences in pore size distribution and could therefore be characterized as typical micro-, meso- and macroporous AC, respectively. Adsorption and desorption conditions were varied by using drinking water (containing dissolved organic matter (DOM)) and DOM-free pure water as background solutions to examine the influence of DOM on OMP desorption for the different AC. Under ideal conditions (adsorption and desorption in pure water) adsorption of the tested OMP was found to be highly up to completely reversible for all tested AC. Under real conditions (adsorption and desorption in drinking water) additional DOM adsorption affects desorption in different ways depending on the AC pore structure. For the micro- and mesoporous AC, an increased irreversibility of OMP adsorption was found, which shows that DOM adsorption prevents OMP desorption. This could be referred to pore blockage effects that occur during the parallel adsorption of DOM and OMP. For the macroporous AC, DOM adsorption led to an enhanced OMP desorption which could be attributed to displacement processes. These results show that smaller pores tend to be blocked by DOM which hinders OMP from desorption. The overall larger pores of the macroporous AC do not get blocked which could allow (i) OMP to desorb and (ii) DOM to enter and displace OMP. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112936
Appears in Collections: 气候减缓与适应
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作者单位: Technische Universität Berlin, Chair of Water Quality Control, KF 4, Str. des 17. Juni 135, Berlin, 10623, Germany
Recommended Citation:
Aschermann G.,Zietzschmann F.,Jekel M.. Influence of dissolved organic matter and activated carbon pore characteristics on organic micropollutant desorption[J]. Water Research,2018-01-01,133