Insights into graphene oxide/ferrihydrite adsorption as pretreatment during ultrafiltration: membrane fouling mitigation and disinfection by-product control

Wu, Zhan, Zhang, Ying, Jiang, Jiazheng, Pu, Jian, Takizawa, Satoshi, Hou, Li-an and Yang, Yu, (2022). Insights into graphene oxide/ferrihydrite adsorption as pretreatment during ultrafiltration: membrane fouling mitigation and disinfection by-product control. Journal of Hazardous Materials, 436 129098-n/a

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  • Sub-type Journal article
    Author Wu, Zhan
    Zhang, Ying
    Jiang, Jiazheng
    Pu, Jian
    Takizawa, Satoshi
    Hou, Li-an
    Yang, Yu
    Title Insights into graphene oxide/ferrihydrite adsorption as pretreatment during ultrafiltration: membrane fouling mitigation and disinfection by-product control
    Appearing in Journal of Hazardous Materials
    Volume 436
    Publication Date 2022-08-15
    Place of Publication Amsterdam
    Publisher Elsevier B.V.
    Start page 129098
    End page n/a
    Language eng
    Abstract In this study, a novel adsorbent of graphene oxide (GO) incorporated ferrihydrite (FH) was fabricated and integrated with ultrafiltration (UF) to remove natural organic matter (NOM), the crucial cause of membrane fouling and major precursor of disinfection by-products (DBPs). Compared with FH and powdered activated carbon (PAC), GO/FH exhibited superior removal for high molecular weight (HMW) humic- and fulvic-like substances and low molecular weight (LMW) protein. The cake layer formed by GO/FH alleviated the deposition of NOM on membrane surface or inside membrane pores. Therefore, GO/FH reduced 89% and 95% total fouling resistance and irreversible membrane resistance, respectively, together with the lowest increment of transmembrane pressure. Pearson correlation analysis indicated that DOC, rather than specific ultraviolet absorbance (SUVA) and UV254, was significantly correlated to the formation of trihalomethanes (THMs) and haloacetic acids (HAAs) when SUVA was below 4 L/mg-C.m. Whilst the HMW NOM (1–20 kDa) was highly related to dibromochloromethane (DBCM) (r = 0.98–1), the LMW fraction (< 1 kDa) was correlated with dibromochloromethane (TCAA) and dichloroacetic acid (DCAA) (r = 0.88–0.98). Inspiringly, GO/FH-UF reduced 90% of carbonaceous DBPs, the concentrations of which well met the WHO Guidelines. In summary, GO/FH-UF substantially alleviated membrane fouling and dramatically reduced DBP formation potential.
    UNBIS Thesaurus ADSORPTION
    Keyword Hybrid membrane process
    Molecular weight
    Membrane fouling
    Disinfection by-products
    Copyright Holder Elsevier B.V.
    Copyright Year 2022
    Copyright type All rights reserved
    ISSN 0304-3894
    DOI https://doi.org/10.1016/j.jhazmat.2022.129098
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    Created: Mon, 20 Jun 2022, 18:26:11 JST by Hanna Takemoto on behalf of UNU IAS