PMID- 30067147 OWN - NLM STAT- MEDLINE DCOM- 20190909 LR - 20190909 IS - 1096-3669 (Electronic) VI - 36 IP - 12 DP - 2018 Dec TI - Effective removal of p-tert-Butylphenol and Pyridine, 3-(1-methyl-2-pyrrolidinyl)-, (S)- from landfill leachate using locust bean gum. PG - 1146-1156 LID - 10.1177/0734242X18789062 [doi] AB - The widespread distribution of persistent organic pollutants (POPs) in landfill leachate is problematic due to their acute toxicity, carcinogenicity and genotoxicity effects, which could be detrimental to public health and ecological systems. The objective of this study was to evaluate the effective removal of POPs - namely, p-tert-Butylphenol and Pyridine, 3-(1-methyl-2-pyrrolidinyl)-, (S)- - from landfill leachate using locust bean gum (LBG), and in comparison with commonly used alum. The response surface methodology coupled with a Box-Behnken design was employed to optimize the operating factors for optimal POPs removal. A quadratic polynomial model was fitted into the data with the R(2) values of 0.97 and 0.96 for the removal of p-tert-Butylphenol and Pyridine, 3-(1-methyl-2-pyrrolidinyl), (S)-, respectively. The physicochemical characteristics of the flocs produced by LBG and alum were evaluated with Fourier Transform Infrared (FTIR) spectroscopy and Scanning Electron Microscopy (SEM). The infrared spectra of LBG-treated floc were identical with LBG powder, but there was some variation in the peaks of the functional groups, signifying the chemical interactions between flocculants and pollutant particles resulting from POPs removal. The results showed that p-tert-Butylphenol and Pyridine, 3-(1-methyl-2-pyrrolidinyl)-, (S)- obtained 96% and 100% removal using 500 mg/L of LBG at pH 4. pH have a significant effect on POPs removal in leachate. It is estimated that treating one million gallons of leachate using alum (at 1 g/L dosage) would cost US$39, and using LBG (at 500 mg/L dosage) would cost US$2. LBG is eco-friendly, biodegradable and non-toxic and, hence, strongly recommended as an alternative to inorganic coagulants for the treatment of POPs in landfill leachate. FAU - Aziz, A AU - Aziz A AD - 1 Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia. AD - 2 Faculty of Marine Sciences, Lasbela University of Agriculture, Water and Marine Sciences, Uthal, Pakistan. AD - 3 Center for Research in Waste Management, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia. FAU - Agamuthu, P AU - Agamuthu P AD - 1 Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia. AD - 3 Center for Research in Waste Management, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia. FAU - Fauziah, S H AU - Fauziah SH AD - 1 Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia. AD - 3 Center for Research in Waste Management, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia. LA - eng PT - Journal Article DEP - 20180801 PL - England TA - Waste Manag Res JT - Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA JID - 9881064 RN - 0 (Galactans) RN - 0 (Mannans) RN - 0 (Phenols) RN - 0 (Plant Gums) RN - 0 (Pyridines) RN - 0 (Water Pollutants, Chemical) RN - O81VMW36CV (butylphen) RN - V4716MY704 (locust bean gum) SB - IM MH - Galactans MH - Mannans MH - Phenols MH - Plant Gums MH - Pyridines MH - *Water Pollutants, Chemical OTO - NOTNLM OT - (S)- OT - 3-(1-methyl-2-pyrrolidinyl)- OT - Persistent organic pollutants (POPs) OT - Pyridine OT - flocs OT - leachate OT - locust bean gum OT - p-tert-Butylphenol EDAT- 2018/08/02 06:00 MHDA- 2019/09/10 06:00 CRDT- 2018/08/02 06:00 PHST- 2018/08/02 06:00 [pubmed] PHST- 2019/09/10 06:00 [medline] PHST- 2018/08/02 06:00 [entrez] AID - 10.1177/0734242X18789062 [doi] PST - ppublish SO - Waste Manag Res. 2018 Dec;36(12):1146-1156. doi: 10.1177/0734242X18789062. Epub 2018 Aug 1.