| Title: | Sorptive removal of toluene and m-xylene by municipal solid waste biochar: Simultaneous municipal solid waste management and remediation of volatile organic compounds |
| Author(s): | Jayawardhana Y; Gunatilake SR; Mahatantila K; Ginige MP; Vithanage M; |
| Address: | "Environmental Chemodynamics Project, National Institute of Fundamental Studies, Kandy, Sri Lanka. College of Chemical Sciences, Institute of Chemistry Ceylon, Rajagiriya, CO, 10107, Sri Lanka. Chemical and Microbiological Laboratory, Industrial Technology Institute, Colombo 7, Sri Lanka. CSIRO Land and Water, Floreat, Western Australia, WA, 6014, Australia. Ecosphere Resilience Research Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, CO, 10250, Sri Lanka. Electronic address: meththika@sjp.ac.lk" |
| DOI: | 10.1016/j.jenvman.2019.02.097 |
| ISSN/ISBN: | 1095-8630 (Electronic) 0301-4797 (Linking) |
| Abstract: | "The remediation of volatile organic compounds (VOCs) from aqueous solution using Municipal solid waste biochar (MSW-BC) has been evaluated. Municipal solid waste was pyrolyzed in an onsite pyrolyzer around 450?ª+( degrees )C with a holding time of 30?ª+min for the production of biochar (BC). Physiochemical properties of BC were assessed based on X-Ray Fluorescence (XRF) and Fourier transform infra-red (FTIR) analysis. Adsorption capacities for the VOCs (m-xylene and toluene) were examined by batch sorption experiments. Analysis indicated high loading of m-xylene and toluene in landfill leachates from different dump sites. The FTIR analysis corroborates with the Boehm titration data whereas XRF data demonstrated negligible amounts of trace metals in MSW-BC to be a potential sorbent. Adsorption isotherm exhibited properties of both Langmuir and Freundlich which is indicative of a non-ideal monolayer adsorption process taking place. Langmuir adsorption capacities were high as 850 and 550?ª+mug/g for toluene and m-xylene respectively. The conversion of MSW to a value added product provided a feasible means of solid waste management. The produced MSW-BC was an economical adsorbent which demonstrated a strong ability for removing VOCs. Hence, MSW-BC can be used as a landfill cover or a permeable reactive barrier material to treat MSW leachate. Thus, the conversion of MSW to BC becomes an environmentally friendly and economical means of solid waste remediation" |
| Keywords: | Charcoal *Refuse Disposal Solid Waste Toluene *Volatile Organic Compounds Waste Disposal Facilities Xylenes Biochar Leachate treatment Municipal solid waste Solid waste management Volatile organic compounds; |
| Notes: | "MedlineJayawardhana, Yohan Gunatilake, Sameera R Mahatantila, Kushani Ginige, Maneesha P Vithanage, Meththika eng England 2019/03/15 J Environ Manage. 2019 May 15; 238:323-330. doi: 10.1016/j.jenvman.2019.02.097. Epub 2019 Mar 11" |
