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Life Cycle Assessment of Rice Residue-Based Biochar Production and Application in Wastewater Treatment

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Title: Life Cycle Assessment of Rice Residue-Based Biochar Production and Application in Wastewater Treatment
Author: Chen, Ziqi
Department: School of Engineering
Program: Engineering
Advisor: Abbassi, Bassim
Abstract: Biochar is a carbon-rich material that could be produced through pyrolysis of agricultural residues such as rice straw and rice husk. Biochar has been proven to be an efficient adsorbent used in wastewater treatment. As the most common way to dispose of agricultural residues is on-field open burning, biochar production was considered as a possible method of agricultural residue valorization. To investigate the impacts of biochar production and its potential in agricultural residue disposal, a life cycle assessment was performed to quantify the impacts of four types of rice straw and rice husk biochar in this study. By comparing the impacts between rice straw open burning and biochar production, environmental benefits were found in global warming, acidification, smog formation and particulate matter formation. This reveals the feasibility of rice residue-based biochar production as opposed to open burning. The impacts of biochar application in wastewater treatment system were also investigated by implementing life cycle assessment. The results showed that substantial mitigations could be achieved by treating wastewater using biochar.
URI: http://hdl.handle.net/10214/16039
Date: 2019-05
Rights: Attribution-NonCommercial-NoDerivatives 4.0 International


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Attribution-NonCommercial-NoDerivatives 4.0 International Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International