TY - JOUR
T1 - Co-valorisation of sewage sludge and poultry litter waste for hydrogen production
T2 - Gasification process design, sustainability-oriented optimization, and systematic assessment
AU - Shi, Tao
AU - Zhou, Jianzhao
AU - Ren, Jingzheng
AU - Ayub, Yousaf
AU - Yu, Haoshui
AU - Shen, Weifeng
AU - Li, Qiao
AU - Yang, Ao
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/6/1
Y1 - 2023/6/1
N2 - In this work, a co-gasification process of sewage sludge and the poultry litter for hydrogen production was developed which involves gasification, water gas shift reaction, acid gas absorption and combustion for power generation. Based on the situations in Hong Kong, the complete processing system was simulated and optimized by developing a composite sustainability objective. The single objective was obtained by the fuzzy method after collecting the decision-making preferences on product yield, economic cost, safety index, environmental impacts, and exergy efficiency. Optimization results showed the exergy efficiency was 30.75%, and the gas turbine operation was most hazardous. The total life cycle greenhouse gas emission was estimated to be 832.58 tons/day with a hydrogen yield of about 47.92 tons/day according to the systematic analysis. Moreover, a subsidy of 115.65 $/ton waste can achieve a relatively attractive profit for the waste-to-H2 process, which was validated by an IRR value of 10% and a positive NPV value in 20 years. The economic sensitivity analysis was finished by testing the influence of some key factors. It was indicated that the subsidy fees, H2 market price, and total equipment cost were relatively more important in the financial profit for this process.
AB - In this work, a co-gasification process of sewage sludge and the poultry litter for hydrogen production was developed which involves gasification, water gas shift reaction, acid gas absorption and combustion for power generation. Based on the situations in Hong Kong, the complete processing system was simulated and optimized by developing a composite sustainability objective. The single objective was obtained by the fuzzy method after collecting the decision-making preferences on product yield, economic cost, safety index, environmental impacts, and exergy efficiency. Optimization results showed the exergy efficiency was 30.75%, and the gas turbine operation was most hazardous. The total life cycle greenhouse gas emission was estimated to be 832.58 tons/day with a hydrogen yield of about 47.92 tons/day according to the systematic analysis. Moreover, a subsidy of 115.65 $/ton waste can achieve a relatively attractive profit for the waste-to-H2 process, which was validated by an IRR value of 10% and a positive NPV value in 20 years. The economic sensitivity analysis was finished by testing the influence of some key factors. It was indicated that the subsidy fees, H2 market price, and total equipment cost were relatively more important in the financial profit for this process.
KW - Composite sustainability index
KW - Process optimization
KW - Safety analysis
KW - Subsidy fees
KW - Waste to hydrogen
UR - http://www.scopus.com/inward/record.url?scp=85149640826&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2023.127131
DO - 10.1016/j.energy.2023.127131
M3 - Journal article
AN - SCOPUS:85149640826
SN - 0360-5442
VL - 272
JO - Energy
JF - Energy
M1 - 127131
ER -