Journal
BIORESOURCE TECHNOLOGY
Volume 301, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.122780
Keywords
Steam co-gasification; Product distribution; Syngas composition; Synergistic effect; Optimal design
Funding
- National Research Foundation (NRF), Prime Minister's Office, Singapore, under its Campus for Research Excellence and Technological Enterprise (CREATE) program [R-706-001-102-281]
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In this study, horticultural waste (HW) and sewage sludge (SS) with different mass ratios were co-gasified with steam at different temperatures to investigate the product distribution, gas synergistic interaction, and optimal design for gas products from co-gasification process. Results showed that with the increase of SS ratio in blends, the H-2 content was increased and the syngas yield was decreased. The synergistic interaction was more significant at higher temperature which promoted the H-2 production probably due to the reduction and steam oxidation of Fe species in SS during co-gasification process. The optimized highest effective gas content (82.92 vol%) was achieved with the highest HHV (11.40 MJ/m(3)) at the conditions of SS ratio = 0.80 and temperature of 900 degrees C. It indicates that steam co-gasification of HW and SS is a promising technology to produce desired syngas towards a clean and efficient waste management process.
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