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Fluorescence spectroscopic studies of the effect of granular activated carbon adsorption on structural properties of dissolved organic matter fractions
Alternative TitleFluorescence spectroscopic studies of the effect of granular activated carbon adsorption on structural properties of dissolved organic matter fractions
Xue Shuang1; Zhao Qingliang3; Wei Liangliang3; Hui Xiujuan1; Ma Xiping1; Lin Yingzi4
2012
Source PublicationFRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
ISSN2095-2201
Volume6Issue:6Pages:784-796
AbstractThis work investigated the effect of granular activated carbon adsorption (GACA) on fluorescence characteristics of dissolved organic matter (DOM) in secondary effluent, by means of excitation-emission matrix (EEM) spectra, the fluorescence regional integration (FRI) method, synchronous spectra, the fluorescence index defined as the ratio of fluorescence emission intensity at wavelength 450 nm to that at 500 nm at excitation (lambda (ex))= 370 nm, and the wavelength that corresponds to the position of the normalized emission band at its half intensity (lambda (0.5)). DOM in the secondary effluent from the North Wastewater Treatment Plant (Shenyang, China) was fractionated using XAD resins into 5 fractions: hydrophobic acid (HPO-A), hydrophobic neutral (HPO-N), transphilic acid (TPI-A), transphilic neutral (TPI-N) and hydrophilic fraction (HPI). Results showed that fluorescent materials in HPO-N and TPI-N were less readily removed than those in the other fractions by GACA. The relative content of fluorescent materials in HPO-A, TPI-A and HPI decreased whereas that in HPO-N and TPI-N increased as a consequence of GACA. Polycyclic aromatics in all DOM fractions were preferentially absorbed by GACA, in comparison with bulk DOM expressed as DOC. On the other hand, the adsorption of aromatic amino acids and humic acid-like fluorophores exhibiting fluorescence peaks in synchronous spectra by GACA seemed to be dependent on the acid/neutral properties of DOM fractions. All five fractions had decreased fluorescence indices as a result of GACA. GACA led to a decreased lambda (0.5) value for HPO-A, increased lambda (0.5) values for HPO-N, TPI-A and HPI, and a consistent lambda (0.5) value for TPI-N.
Other AbstractThis work investigated the effect of granular activated carbon adsorption (GACA) on fluorescence characteristics of dissolved organic matter (DOM) in secondary effluent, by means of excitation-emission matrix (EEM) spectra, the fluorescence regional integration (FRI) method, synchronous spectra, the fluorescence index defined as the ratio of fluorescence emission intensity at wavelength 450 nm to that at 500 nm at excitation (λ_(ex))=370nm, and the wavelength that corresponds to the position of the normalized emission band at its half intensity (λ_(0.5)). DOM in the secondary effluent from the North Wastewater Treatment Plant (Shenyang, China) was fractionated using XAD resins into 5 fractions: hydrophobic acid (HPO-A), hydrophobic neutral (HPO-N),transphilic acid (TPI-A), transphilic neutral (TPI-N) and hydrophilic fraction (HPI). Results showed that fluorescent materials in HPO-N and TPI-N were less readily removed than those in the other fractions by GACA. The relative content of fluorescent materials in HPO-A, TPI-A and HPI decreased whereas that in HPO-N and TPI-N increased as a consequence of GACA. Polycyclic aromatics in all DOM fractions were preferentially absorbed by GACA, in comparison with bulk DOM expressed as DOC. On the other hand, the adsorption of aromatic amino acids and humic acid-like fluorophores exhibiting fluorescence peaks in synchronous spectra by GACA seemed to be dependent on the acid/neutral properties of DOM fractions. All five fractions had decreased fluorescence indices as a result of GACA. GACA led to a decreased λ_(0.5) value for HPO-A, increased λ_(0.5) values for HPO-N, TPI-A and HPI, and a consistent λ_(0.5) value for TPI-N.
KeywordDISINFECTION BY-PRODUCTS SECONDARY EFFLUENT TRIHALOMETHANE PRECURSORS RECLAIMED WATER RIVER WATER REMOVAL ACIDS COAGULATION OZONATION SYSTEMS granular activated carbon adsorption dissolved organic matter fractionation fluorescence
Indexed ByCSCD
Language英语
Funding Project[National Natural Science Foundation of China] ; [Science and Technology Research Program of Commission of Education of Liaoning Province] ; [Planned Science and Technology Project of Liaoning Province]
CSCD IDCSCD:4694604
Citation statistics
Cited Times:6[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/157805
Collection中国科学院金属研究所
Affiliation1.辽宁大学
2.中国科学院金属研究所
3.Harbin Institute Technol, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China
4.上海市地震局
Recommended Citation
GB/T 7714
Xue Shuang,Zhao Qingliang,Wei Liangliang,et al. Fluorescence spectroscopic studies of the effect of granular activated carbon adsorption on structural properties of dissolved organic matter fractions[J]. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,2012,6(6):784-796.
APA Xue Shuang,Zhao Qingliang,Wei Liangliang,Hui Xiujuan,Ma Xiping,&Lin Yingzi.(2012).Fluorescence spectroscopic studies of the effect of granular activated carbon adsorption on structural properties of dissolved organic matter fractions.FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,6(6),784-796.
MLA Xue Shuang,et al."Fluorescence spectroscopic studies of the effect of granular activated carbon adsorption on structural properties of dissolved organic matter fractions".FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 6.6(2012):784-796.
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