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Comparative Study of Solid-Phase Extraction of Dissolved Organic Matter from Oilfield-Produced Brine by Different Sorbents
Yang, Keli1; Zhang, Yaoling1; Dong, Yaping1; Nie, Zhen2; Li, Wu1
2017-09-01
Source PublicationENVIRONMENTAL ENGINEERING SCIENCE
Volume34Issue:9Pages:675-686
SubtypeArticle
AbstractDissolved organic matter (DOM) has been widely studied in streams, lakes, and oceans due to its role in biogeochemical processes, allowing it to act as a sunscreen, food source, trace metal chelator, and photosensitizer. Few studies have examined DOM in oilfield-produced water. In this study, three major types of solid-phase extraction (SPE) sorbents, a silica-based sorbent (ENVI-18), an active carbon (ENVI-Carb), and polymer-based sorbents (PPL, XAD resins, and HLB), were used to isolate DOM from oilfield-produced brine. Isolated SPE DOM samples were analyzed using dissolved organic carbon (DOC), Fourier transform infrared spectroscopy, and pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS). Results showed that the oilfield-produced brine DOM sample was dominated by aliphatic hydrocarbons and aromatic compounds. Nitrogen-containing compounds and carbohydrates were also observed; however, polycyclic aromatic hydrocarbons, fatty acids, and sulfur-containing compounds were relatively absent. Under acidic conditions, extraction efficiencies of DOM from oilfield-produced brine were enhanced for different SPE sorbents as follows from high to low: XAD-8/4 tandem, HLB, PPL, ENVI-18, and ENVI-Carb. DOM samples isolated by different sorbents exhibited different properties. ENVI-18 and XAD-4 DOM isolates were enriched in aliphatic hydrocarbons but devoid of aromatic compounds, XAD-8, HLB, and PPL samples contained relatively higher levels of aromatics, and HLB and PPL samples showed a high retention capacity for carbohydrates, while ENVI-Carb and HLB DOM isolates contained more nitrogen compounds than those obtained using other sorbents. In addition, XAD-8 and PPL extracts were characterized by higher concentrations of sulfur-containing compounds. This is the first study of its type to study oilfield-produced brine DOM, and the results will help us better understand their structures and properties.
KeywordDissolved Organic Matter Ftir Oilfield-produced Brine Py-gc/ms
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine
WOS KeywordGAS CHROMATOGRAPHY/MASS SPECTROMETRY ; POLYCYCLIC AROMATIC-HYDROCARBONS ; HUMIC SUBSTANCES ; MASS-SPECTROMETRY ; CHEMICAL-CHARACTERIZATION ; SPECTROSCOPIC CHARACTERIZATION ; ATMOSPHERIC AEROSOLS ; STRUCTURAL FEATURES ; MARINE ENVIRONMENTS ; HAINAN ISLAND
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000410796300007
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6254
Collection青海盐湖研究所知识仓储
盐湖资源综合利用工程技术中心
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China
2.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Yang, Keli,Zhang, Yaoling,Dong, Yaping,et al. Comparative Study of Solid-Phase Extraction of Dissolved Organic Matter from Oilfield-Produced Brine by Different Sorbents[J]. ENVIRONMENTAL ENGINEERING SCIENCE,2017,34(9):675-686.
APA Yang, Keli,Zhang, Yaoling,Dong, Yaping,Nie, Zhen,&Li, Wu.(2017).Comparative Study of Solid-Phase Extraction of Dissolved Organic Matter from Oilfield-Produced Brine by Different Sorbents.ENVIRONMENTAL ENGINEERING SCIENCE,34(9),675-686.
MLA Yang, Keli,et al."Comparative Study of Solid-Phase Extraction of Dissolved Organic Matter from Oilfield-Produced Brine by Different Sorbents".ENVIRONMENTAL ENGINEERING SCIENCE 34.9(2017):675-686.
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