A review on lignocellulosic biomass waste into biochar-derived catalyst: Current conversion techniques, sustainable applications and challenges

Low, Yi Wen; Yee, Kian Fei

doi:10.1016/j.biombioe.2021.106245

Cited by 52 publications

(24 citation statements)

References 223 publications

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“…The employment of biochar as heterogeneous catalysts for biofuel production gained much attention in 2021. Biochar-based catalyst possesses sustainable feedstock availability, abundant surface functional groups and inorganic species, a hierarchical and well-developed porous structure, and tunable surface functionality (Chi et al 2021;Low and Yee 2021).…”

Section: Biochar-based Catalyst For Biofuel Productionmentioning

confidence: 99%

Bibliometric analysis of biochar research in 2021: a critical review for development, hotspots and trend directions

Singh

Wang

et al. 2023

Biochar

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As a bioproduct from the thermal decomposition of biomass, biochar has various applications in diversified field. In this study, a bibliometric analysis was conducted to visualize the current research status and trends of biochar research. A total of 5535 documents were collected from the Web of Science Core Collection and subjected to visualization analysis for the biochar field's development in 2021 with CiteSpace software. The visual analysis results demonstrate that the number of publications expanded dramatically in 2021, and the growth trend would continue. China and USA were the most contributing countries in biochar research in terms of the number of publications. Based on the keyword co-occurrence analyses, “Biochar for toxic metal immobilization”, “Biochar-based catalyst for biofuel production”, “Biochar for global climate change mitigation”, “Biochar for salinity and drought stress amelioration”, “Biochar amendment in composting”, and “Biochar as additives in anaerobic digestion” were the main research trends and hotspots in this field in 2021. This indicates that the biochar research was multidisciplinary. Regarding the research hotspots, the employment of biochar as heterogeneous catalysts for biofuel production gained great attention in 2021. On the contrary, bioremediation using functional bacteria immobilized on biochar and biochar-assisted advanced oxidation process were well-studied but with less frequency than other topics in 2021. Furthermore, the future research was proposed for green and sustainable applications of biochar. This review provides a comprehensive overview of the research frontiers, the evolution of research hotspots, and potential future research directions in the biochar field. Graphical Abstract

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Section: Biochar-based Catalyst For Biofuel Productionmentioning

confidence: 99%

Bibliometric analysis of biochar research in 2021: a critical review for development, hotspots and trend directions

Singh

Wang

et al. 2023

Biochar

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“…Biomass carbon microspheres are prepared with lignocellulosic biomass by technical means of thermochemical conversions, such as CVD, pyrolysis, arc discharge, laser ablation, hydrothermal carbonization, and so on. 1,8 Hydrothermal methods involve mild, favorable and sustainable conditions, compared to these techniques. 9 Hydrothermal carbonization can make use of natural renewable precursors for simple and low-energy synthesis processes, 10 which can achieve lower energy consumption and exhaust emissions.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Adsorption Properties of Green Sustainable Biomass Carbon Microspheres

Hao

Zhang

Wang

et al. 2022

Ind. Eng. Chem. Res.

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In this study, carbon microspheres (CSn) with various oxygencontaining functional groups (−OH, −C�O, −COOR) were prepared through hydrothermal carbonization at different temperatures. The raw material is the micro-/nanocellulose prepared from factory poplar waste. Methylene blue (MB), as the model dye, was used to verify the adsorption performances. The influences of different adsorption parameters, such as adsorption time, temperature, solution pH, and ion concentration, were analyzed. The adsorption kinetics was well fitted to the pseudo-second-order model. The adsorption isotherm was better described by the Langmuir isotherm with the maximum adsorption capacity (536.64 mg g −1 ) at room temperature. Using Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), and adsorption processes, it was confirmed that the interactions between the oxygen-containing functional groups and methylene blue were the key factor affecting the adsorption. At the same time, it was further confirmed that the content of the oxygen-containing functional groups of the CSn had been relatively reduced with the increases in the temperature, and the adsorption capacity of methylene blue was also decreased. The CSn after adsorption of methylene blue were directly pyrolyzed and its electrical conductivity was also significantly improved. The conducting material not only solved the dilemma of desorption waste liquid treatment but also achieved the dual application of the materials. Therefore, CSn is considered to be a green and sustainable carbon material.

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“…Pyrolysis is a so important technology in the biomass energy industry development with simplicity in design and operation. More importantly, it allows to input almost all types of biomasses at various sizes (Low and Yee 2021). Many researches have investigated the cost of pyrolysis.…”

Section: Cost Factormentioning

confidence: 99%

“…Gasification is often performed at large scales thus producing several tons of biochar per day as a co-product. The cost of $380 per ton and large volumes of gas make gasification an incidental method to produce biochars, and interestingly, it was found a higher heating value of 18.9 MJ for gasification biochars (Low and Yee 2021;Meyer et al 2011;Norgate and Langberg 2009). However, the cost will increase greatly if biomass moisture content is high.…”

Section: Cost Factormentioning

confidence: 99%

Advances in preparation, application in contaminant removal, and environmental risks of biochar-based catalysts: a review

Yang

Dai

Zhao

et al. 2022

Biochar

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As a carbon-rich material produced by pyrolysis of biomass, biochar features low cost, large specific surface area, and widely available feedstocks based on the functional diversity and environmental-friendly properties, it has received increasing attention in the fields of pollutant removal due to three win–win effects of water remediation, carbon sequestration and reutilization of wastes. To design excellent biochar-based catalysts for environmental applications, one must understand recent advances in the catalysts for contaminant removal. This review focuses on the current application of biochar-based catalysts in redox systems, Fenton-like systems, sonocatalytic systems and photocatalytic systems. Besides in-depth discussion in effects of preparation conditions on physicochemical characteristics of biochars, the review supplements new preparation technologies of biochar and biochar-based catalysts. Most importantly, the advantages/shortcomings, catalysis mechanisms, as well as the pollutant removal ability of different types of biochar-based catalysts are discussed. The environmental risks of the catalyst applications are also elaborated on. Future research on biochar-based catalyst production and its environmental applications is discussed. The review provides a good overview of the current advances of biochar-based catalysts in pollutant control and the futureresearch directions. Graphical Abstract

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A review on lignocellulosic biomass waste into biochar-derived catalyst: Current conversion techniques, sustainable applications and challenges

Cited by 52 publications

References 223 publications

Bibliometric analysis of biochar research in 2021: a critical review for development, hotspots and trend directions

Bibliometric analysis of biochar research in 2021: a critical review for development, hotspots and trend directions

Preparation and Adsorption Properties of Green Sustainable Biomass Carbon Microspheres

Advances in preparation, application in contaminant removal, and environmental risks of biochar-based catalysts: a review

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