title: Assessing the treatment of acetaminophen-contaminated brewery wastewater by an anaerobic packed-bed reactor.
abstract: The treatment of high-strength organic brewery wastewater with added acetaminophen (AAP) by an anaerobic digester was investigated. An anaerobic packed-bed reactor (APBR) was operated as a continuous process with an organic loading rate of 1.5-g COD per litre per day and a hydraulic retention time of three days. The results of steady-state analysis showed that the greatest APBR performances for removing COD and TOC were as high as 98 and 93%, respectively, even though the anaerobic digestibility after adding the different AAP concentrations of 5, 10 and 15 mg L(-1) into brewery wastewater can affect the efficiency of organic matter removal. The average CH4 production decreased from 81 to 72% is counterbalanced by the increased CO2 production from 11 to 20% before and after the injection of AAP, respectively. The empirical kinetic models for substrate utilisation and CH4 production were used to predict that, under unfavourable conditions, the performance of the APBR treatment process is able to remove COD with an efficiency of only 6.8%.
authors.affiliation: Faculty of Biosciences and Medical Engineering, Universiti Teknologi Malaysia, UTM Skudai, 81310 Johor Bahru, Malaysia; Department of Environmental Engineering, School of Civil Engineering and Geosciences, Newcastle University, NE1 7RU Newcastle upon Tyne, United Kingdom.
authors.forename: Norhayati
authors.initials: N
authors.lastname: Abdullah
authors.affiliation: Centre for Environmental Sustainability and Water Security, Research Institute for Sustainable Environment, Universiti Teknologi Malaysia, UTM Skudai, 81310 Johor Bahru, Malaysia; Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, UTM Skudai, 81310 Johor Bahru, Malaysia. Electronic address: fulazzaky@gmail.com.
authors.forename: Mohamad Ali
authors.initials: MA
authors.lastname: Fulazzaky
authors.affiliation: Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, UTM Skudai, 81310 Johor Bahru, Malaysia.
authors.forename: Ee Ling
authors.initials: EL
authors.lastname: Yong
authors.affiliation: Centre for Environmental Sustainability and Water Security, Research Institute for Sustainable Environment, Universiti Teknologi Malaysia, UTM Skudai, 81310 Johor Bahru, Malaysia; Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, UTM Skudai, 81310 Johor Bahru, Malaysia.
authors.forename: Ali
authors.initials: A
authors.lastname: Yuzir
authors.affiliation: Department of Environmental Engineering, School of Civil Engineering and Geosciences, Newcastle University, NE1 7RU Newcastle upon Tyne, United Kingdom.
authors.forename: Paul
authors.initials: P
authors.lastname: Sallis
mesh_terms: D000082:Acetaminophen / Q000378:metabolism*; D001421:Bacteria, Anaerobic / Q000378:metabolism*; D019149:Bioreactors; D006801:Humans; D007220:Industrial Waste; D008962:Models, Theoretical; D018505:Waste Management / Q000379:methods; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D000082:Acetaminophen
keywords: Acetaminophen-contaminated brewery wastewater; Anaerobic packed-bed reactor; Kinetic model; Methane production; Substrate utilisation