Sofijanic, M (2020) Chicken Manure for Biofuels and Biobased Chemicals. Bachelor's Thesis, Chemical Engineering.
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Abstract
This study aimed to investigate the potential of a novel biorefinery involving chicken manure (CM). The role of this biorefinery is to produce biofuels using hydrothermal liquefaction (HTL) as well as recover uric acid (UA) and phosphates as valuable chemicals. CM proved to be a promising feedstock for HTL to produce an energy-rich biocrude product, with lab-scale studies having achieved yields of up to 17.7 wt% (dry basis). The higher heating values of biocrudes ranged from 32.0-37.0 MJ/kg, which are significantly higher than the original feedstocks (10.7-18.1 MJ/kg). Furthermore, available upgrading techniques proved that upgrading to modern-day fuels, especially biodiesel, was achievable while being economically competitive to other biofuel technologies. Next, uric acid extraction before HTL is possible using several integration methods, with UA yields above 80% and purities of up to 99.9% attainable. Moreover, a large fraction of the solid residues involved in the process have feed and supplement value which suggests they are suitable for HTL processing. Finally, the phosphate analysis established that insoluble calcium phosphates are the predominant phosphorus species formed during HTL of CM, and are readily extractable with recoveries of greater than 90%. Overall, it was concluded that such a biorefinery has great potential in producing functional modern-day fuels and recovering valuable chemicals from CM, while alleviating contamination-related disposal concerns.
| Item Type: | Thesis (Bachelor's Thesis) |
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| Supervisor name: | Heeres, H.J. and Genuino, H.C. |
| Degree programme: | Chemical Engineering |
| Thesis type: | Bachelor's Thesis |
| Language: | English |
| Date Deposited: | 24 Jul 2020 09:55 |
| Last Modified: | 24 Jul 2020 09:55 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/22851 |
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