An environmental impact assessment of the management of cassava waste: a case study in Thailand

  • Maria M Vahdati University of Reading, School of the Built Environment, Whiteknights Campus, Reading, RG6 6AY, UK
  • Natikorn Prakobboon School of the Built Environment, University of Reading, RG6 6AY, UK
  • Mehdi Shahrestani School of the Built Environment, University of Reading, RG6 6AY, UK

Abstract

In Thailand, cassava waste is one of the main biomass residues and has the potential to be used   as a biomass fuel. However, currently most cassava waste in Thailand is left in agricultural fields or burnt on site and is not utilised for any energy-related purposes. 


This research investigates the environmental impacts associated with three cassava waste management practices including (i)- ploughing the waste to the soil (ii)-burning the waste in the field (iii)- collecting and using the waste in cassava-based bioethanol plant. The environmental impact assessment and material flow analysis associated with these management practices were conducted using the Global Emissions Model for Integrated Systems (GEMIS) package [1]. The outcomes of this study reveal that the CO2 emissions associated with these waste management practices are about 0.195, 0.243 and 0.361 kg CO2-eq/kg of as received (wet) cassava waste, respectively. Compared to other cassava waste disposal methods such as ploughing and burning, cassava waste collection would result in the biggest environmental impact, emitting nearly 85% more GHGs than ploughing and 48% more than burning.


Keywords: Cassava waste, environmental impact, Thailand,

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Published
2019-02-28
How to Cite
VAHDATI, Maria M; PRAKOBBOON, Natikorn; SHAHRESTANI, Mehdi. An environmental impact assessment of the management of cassava waste: a case study in Thailand. International Journal of Biomass and Renewables, [S.l.], v. 7, n. 2, p. 18-29, feb. 2019. ISSN 2289-1692. Available at: <http://gids.mohe.gov.my/index.php/ijbr/article/view/4868>. Date accessed: 17 july 2019.