DOI: 10.1016/j.watres.2019.02.016
Scopus记录号: 2-s2.0-85062173892
论文题名: Simultaneous removal of natural organic matter and micro-organic pollutants from reverse osmosis concentrate using granular activated carbon
作者: Jamil S. ; Loganathan P. ; Listowski A. ; Kandasamy J. ; Khourshed C. ; Vigneswaran S.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 155 起始页码: 106
结束页码: 114
语种: 英语
英文关键词: Adsorption
; Dissolved organic matter fractions
; Hydrophobicity
; Partition coefficient
; Water treatment
英文摘要: Although reverse osmosis produces high quality reusable water from wastewater the rejected concentrate (ROC) poses potentially serious health hazards to non-target species. This is especially the case when it is disposed into aquatic environments due to the presence of high concentrations of dissolved natural organics, micro-organic pollutants (MOPs) and other pollutants. In batch and column studies we found that granular activated carbon (GAC) was very effective in simultaneously removing dissolved organic carbon (DOC) and 18 MOPs from ROC. The amounts of all DOC fractions adsorbed (0.01–3 mg/g) were much higher than those of the MOPs (0.01–2.5 μg/g) mainly because ROC contained larger concentrations of DOC fractions than MOPs. However, the partition coefficient which is a measure of the adsorbability was higher for most of the MOPs (0.21–21.6 L/g) than for the DOC fractions (0.01–0.45 L/g). The amount of DOC fraction adsorbed was in the order: humics > low molecular weights > building blocks > biopolymers (following mostly their concentrations in ROC). The partition coefficient was in the order: low molecular weigth nuetrals > humics > building blocks > biopolymers. The MOPs were classified into four groups based on their hydrophobicity (log Kow) and charge. The four positively charged MOPs with high hydrophobicity had the highest amounts adsorbed and partition coefficient, with 95–100% removal in the GAC column. The MOPs that are negatively charged, regardless of their hydrophobicity, had the lowest amounts adsorbed and partition coefficient with 73–94% removal. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121923
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Faculty of Engineering, University of Technology Sydney (UTS), P.O. Box 123, BroadwayNSW 2127, Australia; Sydney Olympic Park Authority, 8, Australia Avenue, Sydney Olympic ParkNSW, Australia; ICP Laboratory, SSEAU, Mark Wain Wright Analytical Centre, University of New South WalesNSW 2052, Australia
Recommended Citation:
Jamil S.,Loganathan P.,Listowski A.,et al. Simultaneous removal of natural organic matter and micro-organic pollutants from reverse osmosis concentrate using granular activated carbon[J]. Water Research,2019-01-01,155