Removal and monitoring acetaminophen-contaminated hospital wastewater by vertical flow constructed wetland and peroxidase enzymes

Vo, Hoang Nhat Phong, Koottatep, Thammarat, Chapagain, Saroj, Panuvatvanich, Atitaya, Polprasert, Chongrak, Nguyen, Thi Minh Hong, Chaiwong, Chawalit and Nguyen, Ngoc Luong, (2019). Removal and monitoring acetaminophen-contaminated hospital wastewater by vertical flow constructed wetland and peroxidase enzymes. Journal of Environmental Management, 250 1-9

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  • Sub-type Journal article
    Author Vo, Hoang Nhat Phong
    Koottatep, Thammarat
    Chapagain, Saroj
    Panuvatvanich, Atitaya
    Polprasert, Chongrak
    Nguyen, Thi Minh Hong
    Chaiwong, Chawalit
    Nguyen, Ngoc Luong
    Title Removal and monitoring acetaminophen-contaminated hospital wastewater by vertical flow constructed wetland and peroxidase enzymes
    Appearing in Journal of Environmental Management
    Volume 250
    Publication Date 2019-09-12
    Place of Publication Amsterdam
    Publisher Elsevier Ltd.
    Start page 1
    End page 9
    Language eng
    Abstract Hospital wastewater contains acetaminophen (ACT) and nutrient, which need adequate removal and monitoring to prevent impact to environment and community. This study developed a pilot scale vertical flow constructed wetland (CW) to (1) remove high-dose ACT and pollutants in hospital wastewater and (2) identify the correlation of peroxidase enzyme extruded by Scirpus validus and pollutants removal efficiency. By that correlation, a low-cost method to monitor pollutants removal was drawn. Plants, such as Scirpus validus, generated peroxidase enzymes to alleviate pollutants’ stress. Results showed that the CW removed 3.5 to 6 logs of initial concentration 10 mg ACT/L to a recommended level for drinking water. The CW eliminated COD, TKN and TP efficiently, meeting the wastewater discharged standards of Thailand and Vietnam. By various multivariable regression models, concentrations of ACT in CW effluent and enzymes in S. validus exhibited a significant correlation (p < 0.01, R2 = 68.3%). These findings suggested that (i) vertical flow CW could remove high-dose ACT and nutrient and (ii) peroxidase enzymes generated in S. validus, such as soluble and covalent ones, could track ACT removal efficiency. This would help to reduce facilities and analytical cost of micro-pollutants.
    Keyword Acetaminophen
    Constructed wetland
    Hospital wastewater
    Nutrient
    Peroxidase enzyme
    Micro-pollutant
    Copyright Holder The Authors
    Copyright Year 2019
    Copyright type All rights reserved
    ISSN 03014797
    DOI 10.1016/j.jenvman.2019.109526
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    Created: Fri, 06 Nov 2020, 14:38:59 JST by Rachel Nunn on behalf of UNU IAS