PMID- 36375903 OWN - NLM STAT- MEDLINE DCOM- 20221116 LR - 20221116 IS - 1001-0742 (Print) IS - 1001-0742 (Linking) VI - 125 DP - 2023 Mar TI - Biomass chemical looping gasification for syngas production using modified hematite as oxygen carriers. PG - 171-184 LID - S1001-0742(21)00504-0 [pii] LID - 10.1016/j.jes.2021.11.028 [doi] AB - Syngas is a clean energy carrier and a major industrial feedstock. In this paper, syngas was produced via biomass chemical looping gasification (CLG) process. Hematite, the most common Fe-based oxygen carrier (OC), was modified with different metal oxides (CeO(2), CaO and MgO) by the impregnation method. The hematite modified by CeO(2), CaO and MgO was namely as CeO(2)-hematite (CeO(2)-H), CaO-hematite (CaO-H) and MgO-hematite (MgO-H), respectively. The introduction of CeO(2), CaO and MgO enhanced the reactivity of lattice oxygen of hematite. The optimum condition for syngas production had been explored as the mass ratio of oxygen carrier to biomass (O/B) of 0.2, the mass ratio of steam to biomass (S/B) of 0.75 and temperature of 800 degrees C in the biomass CLG process. The CeO(2)-H exhibited the most wonderful performance compared to that for CaO-H and MgO-H. The crystal composition of OC influenced greatly in the CLG process. CeFeO(3) had a good oxygen mobility property and lattice oxygen releasing capacity due to the most oxygen vacancy distributed on the OC surface and the most active lattice oxygen, which is conducive to the biomass chemical looping gasification process for syngas production, leading to the highest gasification efficiency of 95.86% and gas yield of 1.20 m(3)/kg of the three. Cyclic test proved that CeO(2)-H had well sintering resistance and cyclic performance. CI - Copyright (c) 2021. Published by Elsevier B.V. FAU - Jiang, Cong AU - Jiang C AD - School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. FAU - Jin, Xiaoyu AU - Jin X AD - School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. FAU - Xu, Tingting AU - Xu T AD - School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China. Electronic address: tingtingxu1225@126.com. FAU - Xiao, Bo AU - Xiao B AD - School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. FAU - Hu, Zhiquan AU - Hu Z AD - School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. FAU - Wang, Xun AU - Wang X AD - School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China. Electronic address: xunw@hust.edu.cn. LA - eng PT - Journal Article DEP - 20211214 PL - Netherlands TA - J Environ Sci (China) JT - Journal of environmental sciences (China) JID - 100967627 RN - S88TT14065 (Oxygen) RN - 1K09F3G675 (ferric oxide) RN - 0 (Gases) RN - 3A3U0GI71G (Magnesium Oxide) SB - IM MH - Biomass MH - *Oxygen MH - *Gases MH - Magnesium Oxide OTO - NOTNLM OT - Chemical looping gasification OT - Modified hematite OT - Oxygen carrier OT - Pine sawdust OT - Syngas EDAT- 2022/11/15 06:00 MHDA- 2022/11/18 06:00 CRDT- 2022/11/14 21:05 PHST- 2021/09/06 00:00 [received] PHST- 2021/11/22 00:00 [revised] PHST- 2021/11/25 00:00 [accepted] PHST- 2022/11/14 21:05 [entrez] PHST- 2022/11/15 06:00 [pubmed] PHST- 2022/11/18 06:00 [medline] AID - S1001-0742(21)00504-0 [pii] AID - 10.1016/j.jes.2021.11.028 [doi] PST - ppublish SO - J Environ Sci (China). 2023 Mar;125:171-184. doi: 10.1016/j.jes.2021.11.028. Epub 2021 Dec 14.