Municipal solid waste-derived biochar for the removal of benzene from landfill leachate
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The potential of biochar, produced from fibrous organic fractions of municipal solid waste (MSW), for remediation of benzene, one of the frequently found toxic volatile organic compounds in landfill leachate, was investigated in this study based on various environmental conditions such as varying pH, benzene concentration, temperature and time. At the same time, landfill leachate quality parameters were assessed at two different dump sites in Sri Lanka: Gohagoda and Kurunegala. MSW biochar (MSW-BC) was produced by slow temperature pyrolysis at 450 °C, and the physiochemical characteristics of the MSW-BC were characterized. All the leachate samples from the MSW dump sites exceeded the World Health Organization permissible level for benzene (5 µg/L) in water. Removal of benzene was increased with increasing pH, with the highest removal observed at ~pH 9. The maximum adsorption capacity of 576 µg/g was reported at room temperature (~25 °C). Both Freundlich and Langmuir models fitted best with the equilibrium isotherm data, suggesting the involvement of both physisorption and chemisorption mechanisms. Thermodynamic data indicated the feasibility of benzene adsorption and its high favorability at higher temperatures. The values of \(\Delta G\) suggested physical interactions between sorbate and sorbent, whereas kinetic data implied a significant contribution of chemisorption. Results obtained from FTIR provided clear evidence of the involvement of functional groups in biochar for benzene adsorption. This study suggests that MSW biochar could be a possible remedy for benzene removal from landfill leachate and at the same time MSW can be a potential source to produce biochar which acts as a prospective material to remediate its pollutants while reducing the volume of waste.
KeywordsLandfill leachate Physisorption Chemisorption Thermodynamic Open dumps
The research was funded by the National Research Council NRC Grant 15-024, Sri Lanka. The equipment for the study were supported by the Japan International Cooperation Agency (JST-JICA) Science and Technology Research Partnership for Sustainable Development (SATREPS) Project.
- Abdullah, M. P., & Chian, S. S. (2011). Chlorinated and nonchlorinated-volatile organic compounds (VOCs) in drinking water of peninsular Malaysia. Sains Malaysiana, 40(11), 1255–1261.Google Scholar
- Andrew, D., Lenore, S., Eugene, W., & Arnold, E. (1981). Standard methods for the examination of water and wastewater: Selected analytical methods approved and cited by the United States Environmental Protection Agency. Washington, DC: American Public Health Association.Google Scholar
- Coates, J. (2000). Interpretation of infrared spectra, a practical approach. In Encyclopedia of analytical chemistry. Chichester: Wiley.Google Scholar
- Colthup, N. B., Daly, L. H., & Wiberley, S. E. (1990). Introduction to infrared and Raman spectroscopy (3rd ed.). San Diego: Academic Press.Google Scholar
- Cotruvo, J. A., & Regelski, M. (1989). National primary drinking water regulations for volatile organic chemicals. In E. J. Calabrese (Ed.), Safe drinking water act: Amendments, regulations, and standards (pp. 29–34). Chelsea, MI: Lewis Publishers.Google Scholar
- Dula, T., Siraj, K., & Kitte, S. A. (2014). Adsorption of hexavalent chromium from aqueous solution using chemically activated carbon prepared from locally available waste of bamboo (Oxytenanthera abyssinica). ISRN Environmental Chemistry. doi: 10.1155/2014/438245.
- Eichelberger, J., Budde-Revision, W., Munch, J., & Bellar-Revision, T. (1989). Method 524.2 measurement of purgeable organic compounds in water by capillary column gas chromatography/mass spectrometry. In J. W. Munch (Ed.), Environmental monitoring systems laboratory office of research and development (p. 45268). Cincinnati, OH: US EPA.Google Scholar
- EPA. (2003). Integrated risk information system (IRIS) technical factsheet on: Benzene. Washington, DC: United States Environmental Protection Agency.Google Scholar
- Florez Menendez, J. C., Fernandez Sanchez, M. L., Fernandez Martıinez, E., Sanchez Urıia, J. E., & Sanz-Medel, A. (2004). Static headspace versus head space solid-phase microextraction (HS-SPME) for the determination of volatile organochlorine compounds in landfill leachates by gas chromatography. Talanta, 63(4), 809–814. doi: 10.1016/j.talanta.2003.12.044.CrossRefGoogle Scholar
- Gebelein, C., Cheng, T., & Yang, V. C. (1991). Cosmetic and pharmaceutical applications of polymers. New York: Springer, Plenum Press.Google Scholar
- Horsfall, M., Spiff, A. I., & Abia, A. (2004). Studies on the influence of mercaptoacetic acid (MAA) modification of cassava (Manihot sculenta cranz) waste Biomass on the adsorption of Cu2+ and Cd2+ from aqueous solution. Bulletin of the Korean Chemical Society, 25(7), 969–976.CrossRefGoogle Scholar
- Larkin, P. (2011). Infrared and Raman spectroscopy; principles and spectral interpretation. Oxford: Elsevier.Google Scholar
- Lehmann, J., & Joseph, S. (Eds.). (2009). Biochar for environmental management: Science and technology (416 p). London & Sterling, VA: Earthscan.Google Scholar
- Lehmann, J., & Joseph, S. (2015). Biochar for environmental management: Science, technology and implementation (2nd ed., pp. 563–594). Routledge.Google Scholar
- Liu, G., Xie, M., & Zhang, S. (2015). Effect of organic fraction of municipal solid waste (OFMSW)-based biochar on organic carbon mineralization in a dry land soil. Journal of Material Cycles and Waste Management, 1–10.Google Scholar
- Mournighan, R., Dudzinska, M. R., Barich, J., Gonzalez, M. A., & Black, R. K. (2007). Chemistry for the protection of the environment 4 (Vol. 59). New York: Springer.Google Scholar
- Nourmoradi, H., Khiadani, M., & Nikaeen, M. (2012). Multi-component adsorption of benzene, toluene, ethylbenzene, and xylene from aqueous solutions by montmorillonite modified with tetradecyl trimethyl ammonium bromide. Journal of Chemistry. doi: 10.1155/2013/589354.
- Rajapaksha, A. U., Ahmad, M., Vithanage, M., Kim, K.-R., Chang, J. Y., Lee, S. S., et al. (2015). The role of biochar, natural iron oxides, and nanomaterials as soil amendments for immobilizing metals in shooting range soil. Environmental Geochemistry and Health, 37(6), 931–942.CrossRefGoogle Scholar
- Restek, A. (2000). Technical guide for static headspace analysis using GC (pp. 11–12). Bellefonte: Restek Corp.Google Scholar
- Steed, J. W., & Atwood, J. L. (2013). Supramolecular chemistry (2nd ed.). Chichester: Wiley.Google Scholar
- Van der Mass, J. H. (1969). Basic infrared spectroscopy. London: Hyden & son Ltd.Google Scholar
- Visvanathan, C., & Trankler, J. (2003). Municipal solid waste management in Asia: A comparative analysis. In workshop on sustainable landfill management (pp. 3–5). Citeseer.Google Scholar
- WACS (May 2014). Source: Waste amount and composition surveys (WACS) implemented in the Central and Southern Provinces of Sri Lanka, SATREPS report.Google Scholar
- Wibowo, N., Setyadhi, L., Wibowo, D., Setiawan, J., & Ismadji, S. (2007). Adsorption of benzene and toluene from aqueous solutions onto activated carbon and its acid and heat treated forms: influence of surface chemistry on adsorption. Journal of Hazardous Materials, 146(1), 237–242.CrossRefGoogle Scholar
- Wijesekara, S. S. R. M. D. H. R., Mayakaduwa, S., Siriwardana, A. R., de Silva, N., Basnayake, B. F. A., Kawamoto, K., et al. (2014). Fate and transport of pollutants through a municipal solid waste landfill leachate in Sri Lanka. Environmental Earth Sciences, 72(5), 1707–1719. doi: 10.1007/s12665-014-3075-2.Google Scholar
- Zhang, M., Ahmad, M., Al-Wabel, M. I., Vithanage, M., Rajapaksha, A. U., Kim, H. S., et al. (2015). Adsorptive removal of trichloroethylene in water by crop residue biochars pyrolyzed at contrasting temperatures: Continuous fixed-bed experiments. Journal of Chemistry. doi: 10.1155/2015/647072.
- Zurbrugg, C. (2002). Urban solid waste management in low-income countries of Asia how to cope with the garbage crisis. In presented for: scientific committee on problems of the environment (SCOPE ) urban solid waste management review session (pp. 1–13). Durban.Google Scholar