Co-gasification of woody biomass and sewage sludge in a fixed-bed downdraft gasifier

AIChE Journal ◽  
2015 ◽  
Vol 61 (8) ◽  
pp. 2508-2521 ◽  
Author(s):  
Zhehan Ong ◽  
Yongpan Cheng ◽  
Thawatchai Maneerung ◽  
Zhiyi Yao ◽  
Yen Wah Tong ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Fixed Bed ◽  
Woody Biomass ◽  
Downdraft Gasifier

Co-gasification of sewage sludge and woody biomass in a fixed-bed downdraft gasifier: Toxicity assessment of solid residues

2015 ◽  
Vol 36 ◽  
pp. 241-255 ◽  
Author(s):  
Le Rong ◽  
Thawatchai Maneerung ◽  
Jingwen Charmaine Ng ◽  
Koon Gee Neoh ◽  
Boon Huat Bay ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Fixed Bed ◽  
Woody Biomass ◽  
Toxicity Assessment ◽  
Downdraft Gasifier

scholarly journals Hydrogen-Rich Syngas Production from Gasification and Pyrolysis of Solar Dried Sewage Sludge: Experimental and Modeling Investigations

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Aïda Ben Hassen Trabelsi ◽  
Amina Ghrib ◽  
Kaouther Zaafouri ◽  
Athar Friaa ◽  
Aymen Ouerghi ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Moisture Content ◽  
Fixed Bed ◽  
Solar Drying ◽  
Downdraft Gasifier ◽  
Gaseous Products ◽  
Syngas Production ◽  
High Heating ◽  
Combustible Gases ◽  
Stoichiometric Models

Solar dried sewage sludge (SS) conversion by pyrolysis and gasification processes has been performed, separately, using two laboratory-scale reactors, a fixed-bed pyrolyzer and a downdraft gasifier, to produce mainly hydrogen-rich syngas. Prior to SS conversion, solar drying has been conducted in order to reduce moisture content (up to 10%). SS characterization reveals that these biosolids could be appropriate materials for gaseous products production. The released gases from SS pyrolysis and gasification present relatively high heating values (up to 9.96 MJ/kg for pyrolysis and 8.02  9.96 MJ/kg for gasification) due to their high contents of H2 (up to 11 and 7 wt%, resp.) and CH4 (up to 17 and 5 wt%, resp.). The yields of combustible gases (H2 and CH4) show further increase with pyrolysis. Stoichiometric models of both pyrolysis and gasification reactions were determined based on the global biomass formula, CαHβOγNδSε, in order to assist in the products yields optimization.

EFFECT OF MOISTURE AND PARTICLE SIZE ON THE COMBUSTION CHARACTERISTICS OF SEWAGE SLUDGE IN A FIXED BED

2018 ◽  
Author(s):  
Joana Freitas Campana ◽  
Kaio Pandolfi Pessotti ◽  
Carlos Eduardo Silva Abreu ◽  
Patrick de Jesus
Keyword(s):  
Particle Size ◽  
Sewage Sludge ◽  
Fixed Bed ◽  
Combustion Characteristics ◽  
Effect Of Moisture

scholarly journals Gasification and Power Generation Characteristics of Rice Husk, Sawdust, and Coconut Shell Using a Fixed-Bed Downdraft Gasifier

2021 ◽  
Vol 13 (4) ◽  
pp. 2027
Author(s):  
Md. Emdadul Hoque ◽  
Fazlur Rashid ◽  
Muhammad Aziz
Keyword(s):  
Rice Husk ◽  
Fixed Bed ◽  
Cost Effective ◽  
Coconut Shell ◽  
Energy Sources ◽  
Airflow Rate ◽  
Gas Generation ◽  
Biomass Feedstocks ◽  
Downdraft Gasifier ◽  
Synthetic Gas

Synthetic gas generated from the gasification of biomass feedstocks is one of the clean and sustainable energy sources. In this work, a fixed-bed downdraft gasifier was used to perform the gasification on a lab-scale of rice husk, sawdust, and coconut shell. The aim of this work is to find and compare the synthetic gas generation characteristics and prospects of sawdust and coconut shell with rice husk. A temperature range of 650–900 °C was used to conduct gasification of these three biomass feedstocks. The feed rate of rice husk, sawdust, and coconut shell was 3–5 kg/h, while the airflow rate was 2–3 m3/h. Experimental results show that the highest generated quantity of methane (vol.%) in synthetic gas was achieved by using coconut shell than sawdust and rice husk. It also shows that hydrogen production was higher in the gasification of coconut shell than sawdust and rice husk. In addition, emission generations in coconut shell gasification are lower than rice husk although emissions of rice husk gasification are even lower than fossil fuel. Rice husk, sawdust, and coconut shell are cost-effective biomass sources in Bangladesh. Therefore, the outcomes of this paper can be used to provide clean and economic energy sources for the near future.

Air-Steam gasification of lignite in a fixed bed gasifier: Influence of steam to lignite ratio on performance of downdraft gasifier

Energy ◽  
2020 ◽  
Vol 211 ◽  
pp. 118187
Author(s):  
Darshit S. Upadhyay ◽  
Krunal R. Panchal ◽  
Anil Kumar V Sakhiya ◽  
Rajesh N. Patel
Keyword(s):  
Fixed Bed ◽  
Steam Gasification ◽  
Downdraft Gasifier

scholarly journals Air catalytic biomass (PKS) gasification in a fixed-bed downdraft gasifier using waste bottom ash as catalyst with NARX neural network modelling

2020 ◽  
Vol 142 ◽  
pp. 107048 ◽  
Author(s):  
Muhammad Shahbaz ◽  
Syed Ali Ammar Taqvi ◽  
Muddasser Inayat ◽  
Abrar Inayat ◽  
Shaharin A. Sulaiman ◽  
...  
Keyword(s):  
Neural Network ◽  
Fixed Bed ◽  
Bottom Ash ◽  
Network Modelling ◽  
Downdraft Gasifier ◽  
Neural Network Modelling ◽  
Narx Neural Network

BIOGAS RECOVERY FROM A THERMALLY TREATED SEWAGE SLUDGE BY A FIXED-BED ANAEROBIC BIOREACTOR

1986 ◽  
Vol 45 (1-6) ◽  
pp. 83-92
Author(s):  
SHIRO NAGAI ◽  
TADAAKI KAWASUGI ◽  
TAPAN KUMAR MAZUMDER ◽  
NAOMICHI NISHIO
Keyword(s):  
Sewage Sludge ◽  
Fixed Bed ◽  
Anaerobic Bioreactor ◽  
Treated Sewage ◽  
Thermally Treated ◽  
Biogas Recovery
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