Biodiesel production from algae grown on food industry wastewater
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Algae have an ample potential to produce biodiesel from spent wash of food industry. In addition, it is cheaper and presents an environment friendly way to handle food industry wastewater. This study was conducted to optimize the growth of microalgal strains and to assess biodiesel production potential of algae using untreated food industry wastewater as a source of nutrients. The food industry wastewater was collected and analyzed for its physicochemical characteristics. Different dilutions (10, 20, 40, 80, and 100%) of this wastewater were made with distilled water, and growth of two microalgal strains (Cladophora sp. and Spyrogyra sp.) was recorded. Each type of wastewater was inoculated with microalgae, and biomass was harvested after 7 days. The growth of both strains was also evaluated at varying temperatures, pH and light periods to optimize the algal growth for enhanced biodiesel production. After optimization, biodiesel production by Spyrogyra sp. was recorded in real food industry wastewater. The algal biomass increased with increasing level of food industry wastewater and was at maximum with 100% wastewater. Moreover, statistically similar results were found with algal growth on 100% wastewater and also on Bristol’s media. The Cladophora sp. produced higher biomass than Spyrogyra sp. while growing on food industry wastewater. The optimal growth of both microalgal strains was observed at temperature 30 °C, pH: 8, light 24 h. Cladophora sp. was further evaluated for biodiesel production while growing on 100% wastewater and found that this strain produced high level of oil and biodiesel. Algae have an ample potential to produce biodiesel from spent wash of food industry. In addition, it is cheaper and presents an environment friendly way to handle food industry wastewater.
KeywordsAlgae Wastewater Biodiesel Biomass Cladophora sp. Spyrogyra sp.
- APHA. (1998). Standard methods for examination of water and water waste. In American Public Health Association, American Water Works Association (20th ed.). Washington (DC): Water Environmental Federation.Google Scholar
- Bajhaiya, A. K., Mandotra, S. K., Suseela, M. R., Toppo, K., & Ranade, S. (2010). Algal Biodiesel: the next generation biofuel for India. Asian Experimental and Biological Sciences, 1, 728–739.Google Scholar
- Barsanti, L., & Gualtieri, P. (2006). Algal culturing. Algae: anatomy, biochemistry and biotechnology (pp. 209–250). Boca Ranton: CRC Press.Google Scholar
- Chong, A.M.Y., Wong Y.S., & Tam, N.F.Y. (2000). Performance of different microalgal species in removing nickel and zinc from industrial wastewater. Conference on Environmental contamination, toxicology and health, Hong Kong, peoples R China.Google Scholar
- Dubinsky, Z., Matsukawa, R., & Karube, I. (1995). Photobiological aspects of algal mass Culture. Marine Biotechnology, 2, 61–65.Google Scholar
- Dring, M., Brinza, J. L., & Gavrilescu, M. (2007). Marine micro and macro algal species as biosorbants for heavy metals. Environment Engineering and Management, 6, 237–251.Google Scholar
- Food and Agriculture Organization (FAO) of the United Nations. (2009). The market and food security implications of the development of biofuel production. FAO committee on commodity problems, sixty-seventh sessions, Rome, April 20– 22.Google Scholar
- Hu, Q. (2004). Environmental effects on cell composition. In A. Richmond (Ed.), Handbook of microalgal culture (p. 84). 2121 State Avenue, Ames, Iowa, USA: Blackwell Publishing Company.Google Scholar
- IEA. (2011). Key world energy statistics. Paris: International Energy Agency.Google Scholar
- Intergovernmental Panel on Climate Change. (2007). IPCC summary for policy makers. In Climate change 2007: The Physical Science Basis. Contribution of Working Group I to the fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge.Google Scholar
- Mitchell, D. (2008). A note on rising food prices. World bank policy research working paper no.4682, world bank – development economics group (DEC), Washington (DC), August 27; 2008.Google Scholar
- Ozkurt, I. (2009). Qualifying of safflower and algae for energy. Energy Education Science and Technology Part A-Energy Science and Research, 23, 145–151.Google Scholar
- Pizarro, C., Mulbury, W. W., & Kebede-Westhead, E. (2006). An economical assessment of algal turf scrubbertechnology for treatment of dairy manure effluent. Ecological Engineering, 26, 321–327.Google Scholar
- Khola, G., & Ghazala, B. (2012). Biodiesel production from algae. Pakistan Journal of Botany, 44, 379–381.Google Scholar
- Ribeiro, L.A. & da Saliva, P.P. (2012). Techno-economic assessment on innovative biofuel technologies. The case of microalgae. International Scholarly Research Network (ISRN) Renew. Energy Volume, Article ID 173753, 8. https://doi.org/10.5402/2012/173753A.
- Sheedlo, M. (2008). A review of the processes of biodiesel production. MMG 445. Basic Biotechnology eJournal, 4, 61–65.Google Scholar
- Steel, R. G. D., Torrie, J. H., & Dicky, D. A. (1997). Principles and procedures of statistics: a biometrical approach (3rd ed.pp. 204–227). Singapore: McGraw-Hill, Book International Co..Google Scholar
- Valderrama, L. T., Del Campo, C. M., & Rodriguez, C. M. (2002). Treatment of recalcitrant wastewaterfrom ethanol and citric acid production using the microalgae Chlorella vulgaris and the macrophyte Lemnaminusscula. Water Resources, 36, 4185–4192.Google Scholar