scholarly journals Effect of Composition of Iron-Cobalt Oxide Catalyst and Process Parameters on The Hydrothermal Liquefaction of Sugarcane Bagasse

2019 ◽  
Vol 15 (1) ◽  
pp. 186-198
Author(s):  
Gopalakrishnan Govindasamy ◽  
Rohit Sharma ◽  
Sunu Subramanian
Keyword(s):  
Reaction Time ◽  
Oxygen Content ◽  
Sugarcane Bagasse ◽  
Process Parameters ◽  
Hydrothermal Liquefaction ◽  
Oil Yield ◽  
Iron Cobalt ◽  
Bio Oil ◽  
Biomass Ratio ◽  
Total Oil

Development of catalyst with high deoxygenation activity and optimum process parameters are the key for getting the highest biooil yield with the least oxygen content by hydrothermal liquefaction. With this view, iron-cobalt oxides of Co/Fe ratio 0.33, 1.09, 2.35, and 3.52 were prepared by co-precipitation method, and characterized by XRD, BET surface area, chemical composition by EDX method, and evaluated for hydrothermal liquefaction of sugarcane bagasse in a high-pressure batch reactor under subcritical conditions using CO as process gas to find the optimum Co/Fe ratio and process parameters. Optimum Co/Fe ratio was found to be 1.09 as it gave the highest bio-oil yield of 57.6% with the least oxygen content of 10.8%, attributed to the cobalt ferrite, the major phase present in it. The optimum temperature, initial CO pressure, water/biomass ratio, catalyst/biomass ratio and reaction time for the highest oil yield with the least oxygen content were found to be 250 °C, 45 bar, 28, 0.4, and 120 min,  respectively. From the effect of reaction time, it was found that much of the hydrolysis of lignocellulose to water soluble oxygenates, its deoxygenation to bio-oil and its deoxygenation to low oxygen containing bio-oil took place in initial 15 min, 15 to 60 min, and from 30 to 120 min, respectively. Total oil yield (%) was lower by 21% and % oxygen in total oil was higher by 9.9% for spent catalyst compared to fresh catalyst indicating the erosion in the deoxygenation activity of catalyst and thus need for improving its hydrothermal stability. Copyright © 2020 BCREC Group. All rights reserved

Pyrolysis of Sugarcane Bagasse: The Effects of Process Parameters on the Product Yields

2020 ◽  
Vol 1008 ◽  
pp. 159-167
Author(s):  
Ahmed Gaber H. Saif ◽  
Seddik S. Wahid ◽  
Mohamed R.O. Ali
Keyword(s):  
Particle Size ◽  
Sugarcane Bagasse ◽  
Process Parameters ◽  
Flow Rate ◽  
Batch Reactor ◽  
Experimental Studies ◽  
Product Distribution ◽  
Oil Yield ◽  
Bio Oil ◽  
Higher Temperature

The objective of the present work is to investigate the pyrolysis of sugarcane bagasse in a semi-batch reactor and study the effect of process parameters of pyrolysis on the products yield to determine optimum parameters for maximum bio-oil production. Parameters of the pyrolysis process such as temperature, particle size of sugarcane bagasse and flow rate of nitrogen (N2) have been varied as 350–600 °C, 0.25–2 mm and 100–500 cm3/min, respectively. According to the various pyrolysis conditions applied in the experimental studies, the obtained oil, char and gas yields ranged between 38 and 45 wt%, 24 and 36 wt%, and 23 and 37 wt%, respectively. The maximum pyrolysis bio-oil yield of 45 wt% was achieved at temperature of 500 °C, particle size of 0.5 -1 mm with nitrogen(N2) flow rate of 200 cm3/min. Based on the results captured under this study's pyrolysis conditions, temperature is considered to be the most important parameter for product distribution. As the increases of the pyrolysis temperature the bio-char yield decreased and increase of gas yield. The bio-oil yield increases with increasing the temperature, reaches a maximum value at about 500 °C and reduces thereafter at higher temperature is expect due to secondary cracking reactions of the volatiles, which results produce a higher gaseous yield.

scholarly journals Sugarcane Bagasse Pyrolysis: Investigating the Effect of Process Parameters on the Product Yields.

2020 ◽  
Author(s):  
Ahmed Gaber H. Saif ◽  
Mohamed R. O. Ali ◽  
Seddik S. Wahid
Keyword(s):  
Particle Size ◽  
Sugarcane Bagasse ◽  
Process Parameters ◽  
Flow Rate ◽  
Batch Reactor ◽  
Experimental Studies ◽  
Product Distribution ◽  
Oil Yield ◽  
Bio Oil ◽  
Higher Temperature

Abstract The objective of the present work is to investigate the pyrolysis of sugarcane bagasse in a semi-batch reactor and study the effect of process parameters of pyrolysis on the products yield to determine optimum parameters for maximum bio-oil production. Parameters of the pyrolysis process such as temperature, particle size of sugarcane bagasse and flow rate of nitrogen (N2) have been varied as 350–600 ºC, 0.25–2 mm and 100–500 cm3/min, respectively. According to the various pyrolysis conditions applied in the experimental studies, the obtained oil, char and gas yields ranged between 38 and 45 wt%, 24 and 36 wt%, and 23 and 37 wt%, respectively. The maximum pyrolysis bio-oil yield of 45 wt% was achieved at temperature of 500 ºC, particle size of 0.5 -1 mm with nitrogen(N2) flow rate of 200 cm3/min. Based on the results captured under this study's pyrolysis conditions, temperature is considered to be the most important parameter for product distribution. As the increases of the pyrolysis temperature the bio-char yield decreased and increase of gas yield. The bio-oil yield increases with increasing the temperature, reaches a maximum value at about 500 ºC and reduces thereafter at higher temperature is expected due to secondary cracking reactions of the volatiles, which results produce a higher gaseous yield.

scholarly journals Catalytic hydrothermal liquefaction of Euglena sp. microalgae over zeolite catalysts for the production of bio-oil

RSC Advances ◽  
2017 ◽  
Vol 7 (15) ◽  
pp. 8944-8951 ◽  
Author(s):  
Bo Zhang ◽  
Qisong Lin ◽  
Qinhui Zhang ◽  
Kejing Wu ◽  
Weihua Pu ◽  
...  
Keyword(s):  
Reaction Time ◽  
Hydrothermal Liquefaction ◽  
Zeolite Catalysts ◽  
Bio Oil

In this paper, Euglena sp. microalgae with low lipid and high ash contents were successfully converted into bio-oil with/without catalysts through hydrothermal liquefaction (HTL) at 280 °C and a reaction time of 30 min.

Hydrothermal liquefaction of sugarcane bagasse to bio-oils: Effect of liquefaction solvents on bio-oil stability

Fuel ◽  
2022 ◽  
Vol 312 ◽  
pp. 122793
Author(s):  
Javier A. Jimenez Forero ◽  
Tuyen H.T. Tran ◽  
Tana Tana ◽  
Adrian Baker ◽  
Jorge Beltramini ◽  
...  
Keyword(s):  
Sugarcane Bagasse ◽  
Hydrothermal Liquefaction ◽  
Oil Stability ◽  
Bio Oil

scholarly journals Experimental studies of hydrothermal liquefaction of kitchen waste with H+, OH− and Fe3+ additives for bio-oil upgrading

2020 ◽  
pp. 0734242X2095740
Author(s):  
Lixian Wang ◽  
Yong Chi ◽  
Di Shu ◽  
Elsa Weiss-Hortala ◽  
Ange Nzihou ◽  
...  
Keyword(s):  
Waste Treatment ◽  
Experimental Studies ◽  
Inhibitory Effect ◽  
Hydrothermal Liquefaction ◽  
Fuel Oil ◽  
Raw Material ◽  
Oil Yield ◽  
Kitchen Waste ◽  
Bio Oil ◽  
Solid Waste Treatment

Kitchen waste (KW) has gradually become a prominent problem in municipal solid waste treatment. Hydrothermal liquefaction (HTL) is a promising method used to make fuel oil from food and KW. However, the upgrading of bio-oil is particularly important for the sake of industrial reuse. In this study, the KW from university restaurants was subjected to HTL experiments in order to study theoretical feasibility. With the change of conversion temperature and residence time, the optimal conversion working conditions in this study were determined according to the quality and yield of the bio-oil. Moreover, the bio-oil upgrading effects of different additives (hydrogen chloride, sodium hydroxide, and iron(III) chloride) on the HTL of KW were studied. Alkaline additives have an inhibitory effect on the bio-oil yield and positive effect on coke yield. Acidic additives and iron (Fe)-containing additives can promote bio-oil yield. As an important aspect of upgrading, the effect on the nitrogen content of bio-oil with additives was revealed. The alkaline and Fe-containing additives have little effect on reducing the viscosity of the bio-oil while with the appropriate ratio (2.5 mol•kg−1) of acidic additives to the raw material, the static and dynamic fluidity of the oil phase products are reduced to about 0.1 Pa•s.

Process Water Recycle in Hydrothermal Liquefaction of Microalgae To Enhance Bio-oil Yield

2015 ◽  
Vol 29 (4) ◽  
pp. 2422-2430 ◽  
Author(s):  
Elia Armandina Ramos-Tercero ◽  
Alberto Bertucco ◽  
D. W. F. (Wim) Brilman
Keyword(s):  
Hydrothermal Liquefaction ◽  
Process Water ◽  
Oil Yield ◽  
Bio Oil ◽  
Water Recycle

scholarly journals Antioxidant abilities comparison of lignins with their hydrothermal liquefaction products

BioResources ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 243-252
Author(s):  
Shimin Kang ◽  
Biao Li ◽  
Jie Chang ◽  
Juan Fan
Keyword(s):  
Reaction Time ◽  
Raw Materials ◽  
Black Liquor ◽  
Hydrothermal Liquefaction ◽  
Total Phenol ◽  
Oil Yield ◽  
Total Phenol Content ◽  
Phenol Content ◽  
Antioxidant Power ◽  
New Approach

Black liquor alkaline lignin and magnesium lignosulfonate were liquefied at 320 oC. The antioxidant abilities of the liquefaction products were compared with the raw materials. Results showed that the total phenol content and unit antioxidant power of both alkaline lignin liquefaction products (ALLP) and magnesium lignosulfonate liquefaction products (MLLP) were improved, and ALLP had a larger increase than MLLP. The influence of reaction time and temperature on oil yield, total phenol content, and antioxidant power of ALLP was evaluated. The total phenol content was found to have certain relationships with the antioxidant abilities. These results explore a new approach for further studies and applications of liquid antioxidant from lignins.

scholarly journals Catalytic Hydrothermal Liquefaction of Microalgae using Fe-MCM 41 Catalyst in Presence of Carbon Monoxide

2019 ◽  
Vol 31 (3) ◽  
pp. 690-694
Author(s):  
R. Sharma ◽  
A.K. Tiwari ◽  
A. Singh ◽  
N. Sharma
Keyword(s):  
Chlorella Pyrenoidosa ◽  
Hydrothermal Liquefaction ◽  
Oil Yield ◽  
Process Pressure ◽  
Bio Oil ◽  
Lower Temperature ◽  
Hot Compressed Water ◽  
Generation Biofuel ◽  
Nitrogen Contents ◽  
Mcm 41

Among the various types of biomass, microalgae have a potential to become a significant energy source for the production of third generation biofuel. The hydrothermal liquefaction is the direct biomass-to-liquid conversion route carried out in the hot compressed water with or without the presence of a catalyst. In this study, the process pressure and temperature is reduced, but at a lower temperature, bio-oil yield is not high enough to make hydrothermal liquefaction an economical technique. Thus, Fe-MCM 41 catalyst was used to increase the bio-oil yield at low temperatures (250 ºC). This catalyst increased the total bio-oil yield from 42.7 to 61.28 % in hydrothermal liquefaction of Chlorella pyrenoidosa. The bio-oil yield (%) of oil 1, 2 & 3 were 24.72, 17.08 & 19.48, respectively obtained at 250 ºC by using catalyst. Moreover, use of catalyst also resulted in the decrease in oxygen and nitrogen contents of bio-oil and consequently increases in its heating value.

Sign in / Sign up

Export Citation Format

Share Document