Syngas generation for methanol synthesis: oxy-steam gasification route using agro-residue as fuel

Singh, Arashdeep; Gupta, Arvind; Sarma, Rakesh Narayana; Shivapuji, Anand M.; Dasappa, S.

doi:10.1007/s13399-021-02128-y

Cited by 21 publications

(3 citation statements)

References 60 publications

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“…Thermochemical conversion processes can be used to generate gaseous fuels [84] and liquid fuels from biomass [7,8]. Renewable fuels generated through thermochemical technologies such as pyrolysis, hydrothermal liquefaction (HTL) and the hydrodeoxygenation of bio-oils can potentially be cost competitive in comparison to other alternative fuel processes [85].…”

Section: Development Of Biolubricants From Biomass Via Thermochemical...mentioning

confidence: 99%

“…These products can cause serious environmental hazards and pollution. Biomass and solid wastes can be potential candidates for generating fuels for power generation, such as [4][5][6] liquid fuels, methanol [7], bio-oil [8,9], and platform chemicals [10]. In the field of lubrication, which is an important application of petroleum products, mineral-based lubricants can be substituted by biolubricants that can potentially address some of the related environmental effects.…”

Section: Introductionmentioning

confidence: 99%

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Current Status and Future Prospects of Biolubricants: Properties and Applications

Sarma

Vinu

2022

Lubricants

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Biolubricants generated from biomass and other wastes can reduce the carbon footprint of manufacturing processes and power generation. In this paper, the properties and uses of biolubricants have been compared thoroughly with conventional mineral-based lubricants. The biolubricants, which are currently based on vegetable oils, are discussed in terms of their physicochemical and thermophysical properties, stability, and biodegradability. This mini-review points out the main features of the existing biolubricants, and puts forward the case of using sustainable biolubricants, which can be generated from agro-residues via thermochemical processes. The properties, applications, and limitations of non-edible oils and waste-derived oils, such as bio-oil from pyrolysis and bio-crude from hydrothermal liquefaction, are discussed in the context of biolubricants. While the existing studies on biolubricants have mostly focused on the use of vegetable oils and some non-edible oils, there is a need to shift to waste-derived oils, which is highlighted in this paper. This perspective compares the key properties of conventional oils with different oils derived from renewable resources and wastes. In the authors’ opinion, the use of waste-derived oils is a potential future option to address the problem of the waste management and supply of biolubricant for various applications including machining, milling applications, biological applications, engine oils, and compressor oils. In order to achieve this, significant research needs to be conducted to evaluate salient properties such as viscosity, flash point, biodegradability, thermo-oxidative and storage stability of the oils, technoeconomics, and sustainability, which are highlighted in this review.

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Section: Development Of Biolubricants From Biomass Via Thermochemical...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Current Status and Future Prospects of Biolubricants: Properties and Applications

Sarma

Vinu

2022

Lubricants

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“…A portion of the syngas can be converted to hydrogen through steam reforming reactions, which can be used in fuel cells and other hydrogen-based energy technologies (Mann 1995 ). Additionally, syngas can also serve as a raw material for chemical production, including the synthesis of methanol, ammonia, ethylene, and other chemicals, which are widely used in the chemical industry (Alnouss et al 2021 ; Singh et al 2022 ; Zheng et al 2022 ). However, during pyrolysis/gasification, chlorine-containing products like plastic, fabric, and rubber products are predominantly converted to HCl with concentrations ranging from several to hundreds even thousand mg/m 3 (Pan et al 2021 ; Truc and Lee 2019 ) in syngas.…”

Section: Introductionmentioning

confidence: 99%

Unlocking high-performance HCl adsorption at elevated temperatures: the synthesis and characterization of robust Ca–Mg–Al mixed oxides

Cao,

Zhu

2024

Environ Sci Pollut Res

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The presence of HCl and SO2 gas imposes limitations on syngas utilization obtained from household waste in a wide range of applications. The hydrotalcite-like compounds (HTLs) have been proved that could remove HCl efficiency. However, the research on impact of synthesis conditions of HTLs and SO2 on HCl removal was limited. In this study, a range of Ca–Mg–Al mixed oxide sorbents was synthesized by calcining HTLs, with variations in crystallization temperature, solution pH, and the Ca/Mg molar ratio. These sorbents were examined for their effectiveness in removing HCl at medium–high temperatures under diverse conditions. The adsorption performance of selected sorbents for the removal of HCl, SO2, and HCl-SO2 mixed gas at temperature of 350 °C, 450 °C, and 550 °C, respectively, was evaluated using thermogravimetric analysis (TGA). It was observed that the HTL synthesis parameters significantly influenced the HCl adsorption capacity of Ca–Mg–Al mixed oxides. Notably, HTLs synthesized at 60 °C, a solution pH of 10–11, and a Ca/Mg ratio of 4 exhibited superior crystallinity and optimal adsorption characteristics. For individual HCl and SO2 removal, temperature had a minor effect on HCl adsorption but significantly impacted SO2 adsorption rates. At temperatures above 550 °C, SO2 removal efficiency substantially decreased. When exposed to a mixed gas, the Ca–Mg–Al mixed oxides could efficiently remove both HCl and SO2 at temperatures below 550 °C, with HCl dominating the adsorption process at higher temperatures. This dual-action capability is attributed to several mechanisms through which HTL sorbents interacted with HCl, including pore filling, ion exchange, and cation exchange. Initially, HCl absorbed onto specific sites created by water and CO2 removal due to the surface’s polarity. Subsequently, HCl reacted with CaCO3 and CaO formed during HTL decomposition. Graphical abstract

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Value Addition/Biorefinery Approaches Towards Biolubricants Production

Sharma,

Singh,

Syed

et al. 2024

Lubricants From Renewable Feedstocks

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Syngas generation for methanol synthesis: oxy-steam gasification route using agro-residue as fuel

Cited by 21 publications

References 60 publications

Current Status and Future Prospects of Biolubricants: Properties and Applications

Current Status and Future Prospects of Biolubricants: Properties and Applications

Unlocking high-performance HCl adsorption at elevated temperatures: the synthesis and characterization of robust Ca–Mg–Al mixed oxides

Value Addition/Biorefinery Approaches Towards Biolubricants Production

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