Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 547151
Title Removal of organic compounds from shale gas flowback water
Author(s) Butkovskyi, A.; Faber, Ann-Hélène; Wang, Yue; Grolle, K.C.F.; Hofman-Caris, Roberta; Bruning, H.; Wezel, Annemarie P. van; Rijnaarts, H.H.M.
Source Water Research 138 (2018). - ISSN 0043-1354 - p. 47 - 55.
DOI https://doi.org/10.1016/j.watres.2018.03.041
Department(s) Environmental Technology
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Shale gas - Hydraulic fracturing - Flowback water - Dissolved organic carbon; - Aerobic degradation
Abstract Ozonation, sorption to granular activated carbon and aerobic degradation were compared as potential treatment methods for removal of dissolved organic carbon (DOC) fractions and selected organic compounds from shale gas flowback water after pre-treatment in dissolved air flotation unit. Flowback water was characterised by high chemical oxygen demand and DOC. Low molecular weight (LMW) acids and neutral compounds were the most abundant organic fractions, corresponding to 47% and 35% of DOC respectively. Ozonation did not change distribution of organic carbon fractions and concentrations of detected individual organic compounds significantly. Sorption to activated carbon targeted removal of individual organic compounds with molecular weight >115 Da, whereas LMW compounds remained largely unaffected. Aerobic degradation was responsible for removal of LMW compounds and partial ammonium removal, whereas formation of intermediates with molecular weight of 200–350 Da was observed. Combination of aerobic degradation for LMW organics removal with adsorption to activated carbon for removal of non-biodegradable organics is proposed to be implemented between pre-treatment (dissolved air floatation) and desalination (thermal or membrane desalination) steps.
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