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6086031 
Journal Article 
Assessing the treatment of acetaminophen-contaminated brewery wastewater by an anaerobic packed-bed reactor 
Abdullah, N; Fulazzaky, MA; Yong, EL; Yuzir, A; Sallis, P 
2016 
Yes 
Journal of Environmental Management
ISSN: 0301-4797
EISSN: 1095-8630 
168 
273-279 
English 
26760229 
WOS:000375732100030 
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%. 
Acetaminophen-contaminated brewery wastewater; Anaerobic packed-bed reactor; Kinetic model; Methane production; Substrate utilisation