Ionic liquid-assisted production of high-porosity biochar with more surface functional groups: Taking cellulose as attacking target

Yang, Fan; Zuo, Xiuping; Yang, Haorong; Ke, Qiang; Huang, Yuandong; Cao, Xinde; Zhao, Ling

doi:10.1016/j.cej.2021.133811

Cited by 19 publications

(5 citation statements)

References 51 publications

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“…Crystallization is less feasible for recycling and relatively difficult to integrate with the currently available equipment in industry compared to the case for LLE. 26,29 For liquid-liquid extraction, the extractant can be readily recycled, and the process has been demonstrated to be effective at separating many species, such as toxic compounds, [30][31][32] heavy metal ions, [33][34][35] and anions. [36][37][38] Yet, LLE-based sulfate separation is still underdeveloped.…”

Section: Introductionmentioning

confidence: 99%

Recognition-guided sulfate extraction and transport using tripodal hexaurea receptors

Chen

Zhao

et al. 2022

Inorg. Chem. Front.

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Section: Introductionmentioning

confidence: 99%

Recognition-guided sulfate extraction and transport using tripodal hexaurea receptors

Chen

Zhao

et al. 2022

Inorg. Chem. Front.

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“…It has been observed that the use of IL [Bmim][TFSI] can reduce the pyrolysis temperature of wastepaper and produce biochar with a better surface area (from 19.8 to 52.8 m 2 /g) and increased pore volume (from 0.033 to 0.174 cm 3 /g) than ordinary biochar. This advantage causes biochar to show a high capacity to absorb lead pollutants (99.4%) compared with conventional biochar (25.7%) (Yang et al, 2022). [Bmim][OAc] is another IL that acts as a catalyst during the pyrolysis of microcrystalline cellulose at lower temperatures causing graphitization of biochar.…”

Section: Discussion and Future Directionsmentioning

confidence: 99%

A comprehensive review on how ionic liquids enhance the pyrolysis of cellulose, lignin, and lignocellulose toward a circular economy

Eqbalpour

Andooz

Kowsari

et al. 2023

WIREs Energy & Environment

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The sustainable use of plant biomass (PB) to produce new valuable compounds helps alleviate the world's excessive reliance on fossil fuels. Among the different processes available, pyrolysis has drawn significant attention for its efficiency in converting PB (including lignin, hemicellulose, and cellulose) into solid, liquid, and gas products by thermal degradation. Moreover, the participation of ionic liquids (ILs) in the pyrolysis process can further facilitate this process, improve the quality of pyrolysis products, and enhance the operational parameters. This review article presents an in‐depth examination of how ILs enhance the pyrolysis of lignin, cellulose, and lignocellulose toward sustainability and circular economy (CE). The structural chemistry of the components of PB, namely cellulose, lignin, and hemicellulose, is first discussed. Furthermore, the role of ILs in the pyrolysis of cellulose, lignin, and lignocellulose is thoroughly investigated. These roles include pre‐treating agent before pyrolysis, catalyst after or during pyrolysis, template during pyrolysis, and extractant after pyrolysis. In the following, the sustainability of PB pyrolysis with the participation of ILs is examined from three aspects: environmental, social, and economical. Finally, the PB pyrolysis was investigated from the CE aspect. There is no doubt that the participation of ILs in the pyrolysis process positively affects the operating conditions and product quality, so the whole process is only one step away from complete sustainability. This article is categorized under: Sustainable Development > Sustainable Development Goals Sustainable Energy > Bioenergy Climate and Environment > Circular Economy

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“…The temperature of pyrolysis has a considerable impact on the physicochemical properties of biochar (Usevic ˇiu ¯t_ e and Baltr_ enait_ e-Gedien_ e 2020). Figure 6 shows that biochar produced at temperatures less than 600 °C can preserve functional groups in the raw material (Yang et al 2022a). Lowering the pyrolysis temperature leads to more negatively charged acidic groups in the biochar (Banik et al 2018).…”

Section: Impact Of Biochar Properties On Phosphorus Releasementioning

confidence: 99%

Machine learning and computational chemistry to improve biochar fertilizers: a review

Osman,

Zhang,

Lai

et al. 2023

Environ Chem Lett

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Traditional fertilizers are highly inefficient, with a major loss of nutrients and associated pollution. Alternatively, biochar loaded with phosphorous is a sustainable fertilizer that improves soil structure, stores carbon in soils, and provides plant nutrients in the long run, yet most biochars are not optimal because mechanisms ruling biochar properties are poorly known. This issue can be solved by recent developments in machine learning and computational chemistry. Here we review phosphorus-loaded biochar with emphasis on computational chemistry, machine learning, organic acids, drawbacks of classical fertilizers, biochar production, phosphorus loading, and mechanisms of phosphorous release. Modeling techniques allow for deciphering the influence of individual variables on biochar, employing various supervised learning models tailored to different biochar types. Computational chemistry provides knowledge on factors that control phosphorus binding, e.g., the type of phosphorus compound, soil constituents, mineral surfaces, binding motifs, water, solution pH, and redox potential. Phosphorus release from biochar is controlled by coexisting anions, pH, adsorbent dosage, initial phosphorus concentration, and temperature. Pyrolysis temperatures below 600 °C enhance functional group retention, while temperatures below 450 °C increase plant-available phosphorus. Lower pH values promote phosphorus release, while higher pH values hinder it. Physical modifications, such as increasing surface area and pore volume, can maximize the adsorption capacity of phosphorus-loaded biochar. Furthermore, the type of organic acid affects phosphorus release, with low molecular weight organic acids being advantageous for soil utilization. Lastly, biochar-based fertilizers release nutrients 2–4 times slower than conventional fertilizers.

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Ionic liquid-assisted production of high-porosity biochar with more surface functional groups: Taking cellulose as attacking target

Cited by 19 publications

References 51 publications

Recognition-guided sulfate extraction and transport using tripodal hexaurea receptors

Recognition-guided sulfate extraction and transport using tripodal hexaurea receptors

A comprehensive review on how ionic liquids enhance the pyrolysis of cellulose, lignin, and lignocellulose toward a circular economy

Machine learning and computational chemistry to improve biochar fertilizers: a review

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