Removal of ametryn and organic matter from wastewater using sequential anaerobic-aerobic batch reactor: A performance evaluation study

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dc.contributor.authorMahesh, G.B.
dc.contributor.authorManu, B.
dc.date.accessioned2026-02-05T09:29:31Z
dc.date.issued2019
dc.description.abstractThe present study was aimed to investigate biodegradation of 2-(ethylamino)-4-(isopropylamino)-6-(methylthio)-s-triazine (ametryn) in a laboratory-scale anaerobic sequential batch reactor (ASBR) and followed by aerobic post-treatment. Co-treatment of ametryn with starch is carried out at ambient environmental conditions. The treatment process lasted up to 150 days of operation at a constant hydraulic retention time (HRT) of 24 h and an organic loading rate (OLR) of 0.21–0.215 kg-COD/m3/d. Ametryn concentration of 4 and 6 mg/L was removed completely within 48–50 days of operation with chemical oxygen demand (COD) removal efficiencies >85% at optimum reactor conditions. Ametryn acted as a nutrient/carbon source rather causing toxicity and contributed to methane gas production and sludge granulation in the anaerobic reactor. Biotransformation products of ametryn to cyanuric acid, biuret, and their further conversion to ammonia nitrogen and CO<inf>2</inf> are monitored during the study. Adsorption of ametryn on to reactor sludge was negligible, sludge granulation, presence of ANAMMOX bacteria, and low MLVSS/MLSS ratio between 0.68 and 0.72. The study revealed that ametryn removal occurred mainly due to biodegradation and co-metabolism processes. Aerobic post-treatment of anaerobic effluent was able to remove COD up to 95%. The results of this study exhibit that anaerobic-aerobic treatment is feasible due to easy operation, economic, and highly efficient. © 2019 Elsevier Ltd
dc.identifier.citationJournal of Environmental Management, 2019, 249, , pp. -
dc.identifier.issn3014797
dc.identifier.urihttps://doi.org/10.1016/j.jenvman.2019.109390
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/24318
dc.publisherAcademic Press
dc.subjectActivated sludge process
dc.subjectAmmonia
dc.subjectBatch reactors
dc.subjectChemical oxygen demand
dc.subjectEffluent treatment
dc.subjectEffluents
dc.subjectGranulation
dc.subjectMetabolism
dc.subjectNitrogen removal
dc.subjectWastewater treatment
dc.subjectAerobic post treatment
dc.subjectAmetryn
dc.subjectAnaerobic-aerobic treatment
dc.subjectAnaerobic/aerobic
dc.subjectANAMMOX
dc.subjectBiotransformation
dc.subjectChemical-oxygen demands
dc.subjectCo metabolisms
dc.subjectEvaluation study
dc.subjectPerformances evaluation
dc.subjectBiodegradation
dc.subjectametryn
dc.subjectbiuret
dc.subjectcarbon dioxide
dc.subjectcyanuric acid
dc.subjectfatty acid
dc.subjectmethane
dc.subjectorganic matter
dc.subjecttriazine
dc.subjectvolatile fatty acid
dc.subjecttriazine derivative
dc.subjectanoxic conditions
dc.subjectbiodegradation
dc.subjectbiotransformation
dc.subjectmetabolism
dc.subjectorganic compound
dc.subjectoxic conditions
dc.subjectperformance assessment
dc.subjectpollutant removal
dc.subjectsequential extraction
dc.subjectwastewater
dc.subjectwastewater treatment
dc.subjectaerobic sludge
dc.subjectalkalinity
dc.subjectanaerobic sludge
dc.subjectanammox bacterium
dc.subjectArticle
dc.subjectbiomass
dc.subjectcarbon source
dc.subjectchemical oxygen demand
dc.subjectcontrolled study
dc.subjecteffluent
dc.subjecthydraulic retention time
dc.subjectmicrobial degradation
dc.subjectmineralization
dc.subjectnonhuman
dc.subjectpH
dc.subjectseed sludge
dc.subjectwaste component removal
dc.subjectwaste water management
dc.subjectanaerobic growth
dc.subjectbioreactor
dc.subjectwaste water
dc.subjectAnaerobiosis
dc.subjectBioreactors
dc.subjectTriazines
dc.subjectWaste Water
dc.titleRemoval of ametryn and organic matter from wastewater using sequential anaerobic-aerobic batch reactor: A performance evaluation study

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