TY - JOUR
T1 - Syngas from palm oil mill effluent (POME) steam reforming over lanthanum cobaltite
T2 - effects of net-basicity
AU - Cheng, Yoke Wang
AU - Chong, Chi Cheng
AU - Lee, Soon Poh
AU - Lim, Jun Wei
AU - Wu, Ta Yeong
AU - Cheng, Chin Kui
N1 - Funding Information:
Ministry of Education Malaysia subsidised this work via the Fundamental Research Grant Scheme (FRGS) with a grant number of RDU170116 . YWC also grateful to Malaysia Toray Science Foundation for financial allocation through Science & Technology Research Grant (STRG), RDU181501 . Appendix A
Funding Information:
Ministry of Education Malaysia subsidised this work via the Fundamental Research Grant Scheme (FRGS) with a grant number of RDU170116. YWC also grateful to Malaysia Toray Science Foundation for financial allocation through Science & Technology Research Grant (STRG), RDU181501.
Publisher Copyright:
© 2019 Elsevier Ltd
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/4
Y1 - 2020/4
N2 - Steam reforming (SR) of palm oil mill effluent (POME) over net-basic LaCoO3 was optimised for syngas production (FSyngas) and degradation efficacies (XP) by tuning temperature (T), POME flow rate (V˙POME), catalyst weight (Wcat), and particle size (dcat). Net-basicity of LaCoO3 facilitated the adsorption of Lewis acid CO2, thereby assisted carbon removal via reverse Boudouard reaction. POME SR over LaCoO3 was promoted by using (i) higher T (endothermicity), (ii) greater V˙POME (larger partial pressure at constant weight-hourly-space-velocity and total feed rate), (iii) larger Wcat (longer residence time for POME vapour), and (iv) smaller dcat (higher surface area to volume ratio). Nevertheless, the catalytic activity of LaCoO3 declined with (i) severe coking and sintering deactivation (T≥973 K), (ii) carbon-encapsulation (V˙POME = 0.10 mL/min), (iii) agglomeration (Wcat>0.3 g), and (iv) pore occlusion (dcat<74 μm). Hence, the optimum conditions of POME SR over LaCoO3 were T = 873 K, V˙POME = 0.09 mL/min, Wcat = 0.3 g, and dcat = 74–105 μm. The optimised process able to produce syngas at a rate of 86.60 μmol/min whilst degrading POME to a less polluted liquid condensate (COD = 435 mg/L and BOD5 = 62 mg/L).
AB - Steam reforming (SR) of palm oil mill effluent (POME) over net-basic LaCoO3 was optimised for syngas production (FSyngas) and degradation efficacies (XP) by tuning temperature (T), POME flow rate (V˙POME), catalyst weight (Wcat), and particle size (dcat). Net-basicity of LaCoO3 facilitated the adsorption of Lewis acid CO2, thereby assisted carbon removal via reverse Boudouard reaction. POME SR over LaCoO3 was promoted by using (i) higher T (endothermicity), (ii) greater V˙POME (larger partial pressure at constant weight-hourly-space-velocity and total feed rate), (iii) larger Wcat (longer residence time for POME vapour), and (iv) smaller dcat (higher surface area to volume ratio). Nevertheless, the catalytic activity of LaCoO3 declined with (i) severe coking and sintering deactivation (T≥973 K), (ii) carbon-encapsulation (V˙POME = 0.10 mL/min), (iii) agglomeration (Wcat>0.3 g), and (iv) pore occlusion (dcat<74 μm). Hence, the optimum conditions of POME SR over LaCoO3 were T = 873 K, V˙POME = 0.09 mL/min, Wcat = 0.3 g, and dcat = 74–105 μm. The optimised process able to produce syngas at a rate of 86.60 μmol/min whilst degrading POME to a less polluted liquid condensate (COD = 435 mg/L and BOD5 = 62 mg/L).
KW - Palm oil mill effluent
KW - Steam reforming
KW - Syngas generation
KW - Wastewater valorisation
UR - https://www.scopus.com/pages/publications/85074469269
U2 - 10.1016/j.renene.2019.10.040
DO - 10.1016/j.renene.2019.10.040
M3 - Article
AN - SCOPUS:85074469269
SN - 0960-1481
VL - 148
SP - 349
EP - 362
JO - Renewable Energy
JF - Renewable Energy
ER -
SDG 7 Affordable and Clean Energy