In-situ catalytic hydro-liquefaction of Delonix regia lignocellulosic biomass waste in hydrogen-donor solvent

Acharya, Sneha; Gupta, Diya Sen; Kishore, Nanda

doi:10.1016/j.rineng.2022.100734

Cited by 10 publications

(4 citation statements)

References 65 publications

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“…Also, it is projected that the global average temperature will increase by about 2.5 °C by 2100. Clean and renewable alternative fuels are being investigated due to the increase in energy consumption with the growing world population, the risk of resources depletion, and serious environmental problems caused by fossil fuels (Leng et al 2020 ; Acharya et al 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of an innovative SF/NZVI catalyst and investigation of its effectiveness on bio-oil production in liquefaction process alongside other parameters

Ersöz,

Bayrak,

Gündüz

et al. 2024

Environ Sci Pollut Res

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Today, new energy sources alternative to fossil fuels are needed to meet the increasing energy demand. It is becoming increasingly important to constitute new energy sources from waste biomass through the liquefaction process. In this study, walnut shells (WS) were liquefied catalytically and non-catalytically under different parameters using the liquefaction method. In this process, the effect of silica fume/nano zero-valent iron (SF/NZVI) catalysts on the conversion rates was investigated. The catalyst was synthesized by reducing NZVI using a liquid phase chemical reduction method on SF. The SF/NZVI catalyst was characterized by scanning electron microscopy- energy dispersive X-ray (SEM–EDX), transmission electron microscope (TEM), Brunauer–Emmett–Teller (BET), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) analysis. The effect of various process parameters on the liquefaction process was investigated. In this context, the reaction temperature ranged from 300 to 400 °C, the solid/solvent ratio ranged from 1/1 to 1/3, the reaction time ranged from 30 to 90 min, and the catalyst concentration ranged from 1 to 6%. According to the results obtained, the most suitable operating conditions for non-catalytic experiments in liquefaction of WS were found to be temperature of 400 °C, reaction time of 60 min, and solid/solvent of 1/3. In catalytic conditions, the optimum values were obtained as temperature of 375 °C, reaction time of 60 min, solid/solvent ratio of 1/3, and catalyst concentration of 6%. The highest total conversion and (oil + gas) % conversion were 90.4% and 46.7% under non-catalytic conditions and 90.7% and 62.3% under catalytic conditions, respectively. Gas chromatography/mass spectrometry (GC/MS) analysis revealed the bio-oil was mainly composed of aromatic compounds (benzene, butyl-, indane and their derivatives,) and polyaromatic compounds (naphthalene, decahydro-, cis-, naphthalene, 1-methyl-.). The aim of increasing the quantity and quality of the light liquid product in the study has been achieved.

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Section: Introductionmentioning

confidence: 99%

Synthesis of an innovative SF/NZVI catalyst and investigation of its effectiveness on bio-oil production in liquefaction process alongside other parameters

Ersöz,

Bayrak,

Gündüz

et al. 2024

Environ Sci Pollut Res

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“…Globally, biomass is a promising source of bioenergy and has attracted increasing attention [ [1] , [2] , [3] ]. Agricultural waste is primary biomass with poor-quality solid fuel characteristics [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Kinetic mechanism of wheat straw pellets combustion process with a thermogravimetric analyser

Nath,

Chen,

Bowtell

et al. 2023

Heliyon

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“…[4][5][6] Thereafter, the liquid product is separated by organic solvents having like polarity to desirable compounds expected in biocrude due to the insoluble nature of char in organic solvents. 7 The literature suggests that using water as well as organic solvents for liquefaction to obtain desirable biocrude is in increasing demand. [8][9][10][11] High polarity organic solvents hold the potential to contribute their carbon (C) and hydrogen (H) compounds for efficient hydrocarbon formation and to enhance aliphatic esters in biocrude.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrothermal liquefaction (HTL) processing involves conversion of moisture‐rich biomass feedstock at a high pressure range of 5–25 MPa and low‐to‐moderate temperature range of 280–375 °C in water to produce liquid product (biocrude), solid product (biochar) and gases 4–6 . Thereafter, the liquid product is separated by organic solvents having like polarity to desirable compounds expected in biocrude due to the insoluble nature of char in organic solvents 7 . The literature suggests that using water as well as organic solvents for liquefaction to obtain desirable biocrude is in increasing demand 8–11 .…”

Section: Introductionmentioning

confidence: 99%

Solvothermal co‐liquefaction of wastes from Citrus limetta fruit processing

Acharya

Kishore

2023

J of Chemical Tech & Biotech

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BACKGROUND: Liquefaction of biomass has an advantage over other thermochemical processes of conversion and its co-liquefaction aims to overcome the restrictions and limitations imposed upon single feedstock liquefaction. Valorization of Citrus limetta peel and pulp wastes by their co-liquefaction in a hydrogen-donor solvent such as methanol was chosen as an objective herein for efficient conversion of raw materials to obtain better quality biocrude.RESULTS: A maximum biocrude yield of 11.25 wt. % was obtained from solvothermal co-liquefaction of Citrus limetta peel and pulp biomasses at 260 °C temperature, with 30 min residence time, at three different ratios of biomass to solvent (1:2, 1:3 and 1:4). This was higher than the biocrude yield from liquefaction of individual C. limetta pulp biomass as well as other studies on similar citrus fruit wastes. The higher heating value (HHV) of biocrude was raised to 25.72 MJ kg −1 at 1:3 biomass:solvent ratio by co-liquefaction, showing its synergy over individual C. limetta peel biocrude. The presence of esters, ketones, alcohols, hydrocarbons and fatty acids in the biocrude product were found from Gas Chromatography-Mass Spectrometry (GC-MS) results. The biochar obtained was mesoporous in nature and could be employed for adsorption in bioremediation of water and soil.CONCLUSION: Co-liquefaction of homogeneous lignocellulosic biomasses have the ability to boost production and the quality of the biocrude and biochar attained in comparison to products of individual liquefaction. Future studies on upgrading the quality of products are required.

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In-situ catalytic hydro-liquefaction of Delonix regia lignocellulosic biomass waste in hydrogen-donor solvent

Cited by 10 publications

References 65 publications

Synthesis of an innovative SF/NZVI catalyst and investigation of its effectiveness on bio-oil production in liquefaction process alongside other parameters

Synthesis of an innovative SF/NZVI catalyst and investigation of its effectiveness on bio-oil production in liquefaction process alongside other parameters

Kinetic mechanism of wheat straw pellets combustion process with a thermogravimetric analyser

Solvothermal co‐liquefaction of wastes from Citrus limetta fruit processing

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