Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 401, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2020.123404
Keywords
Phytoremediation; Pharmaceutical contaminants; Doxylamine; Plant-microbiome system; Metabolic pathway
Categories
Funding
- Young Research Program of the National Research Foundation of Korea (NRF), Ministry of Education, Science, and Technology (MEST) of the South Korean government [2019R1F1A1064379]
- Mid-Career Researcher Program of the National Research Foundation of Korea (NRF), Ministry of Education, Science, and Technology (MEST) of the South Korean government [2020R1A2C3004237]
- Ocean University of China [862001013135]
- National Research Foundation of Korea [2019R1F1A1064379] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This study investigated the biodegradation and metabolic fate of a frequently found pharmaceutical contaminant, doxylamine, by Typha angustifolia and Ipomoea aquatica. A constructed phytobed co-planted with these two plants showed high efficiency in removing doxylamine and other pollutants from real wastewater. High-throughput sequencing of soil and rhizosphere indicated the dominated microbial communities of the phytobed.
Pharmaceutical contaminants in environment induce unexpected effects on ecological systems and human; thus, development of efficient technologies for their removal is immensely necessary. In this study, biodegradation and metabolic fate of a frequently found pharmaceutical contaminant, doxylamine by Typha angustifolia and Ipomoea aquatica was investigated. Microbial community of the plant rhizosphere has been identified to understand the important roles of the functional microbes. The plants reduced 48-80.5 % of doxylamine through hydrolysis/dehydroxylation and carbonylation/decarbonylation. A constructed phytobed co-planted with T. angustifolia and I. aquatica removed 77.3 %, 100 %, 83.67 %, and 61.13 % of chemical oxygen demand, total nitrogen, total phosphorus, and doxylamine respectively from real wastewater. High-throughput sequencing of soil and rhizosphere indicated that the phyla Proteobacteria, Bacteroidetes, Firmicutes, Planctomycetes, Actinobacteria, and Cyanobacteria dominated the microbial communities of the phytobed. Current study has demonstrated the applicability of the developed phytobeds for the treatment of doxylamine from municipal wastewater and provide a comprehensive understanding of its metabolism through plant and its rhizospheric microbial communities.
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