Conversion of model biomass to carbon-based material with high conductivity by using carbonization

Çeliktaş, Melih Soner; Alptekin, Fikret Müge

doi:10.1016/j.energy.2019.116089

Cited by 40 publications

(25 citation statements)

References 34 publications

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“…20 Carbon spheres have also been widely studied and applied in the field of energy storage. To improve their electrical conductivity, researchers have conducted chemical activation (such as KOH, NaOH, H 3 PO 4 , and ZnCl 2 ), 21 single-or double-heteroatom (B, N, S, O, and P) doping, which can adjust the electronic and chemical structure. This potentially results in increasing the electronic conductivity, expanding the interlayer distance, and increasing the absorption capacity of Li + /electrolyte and more active sites, so as to improve the storage and cycling performance of lithium.…”

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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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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“…Renewable energy technologies have become indispensable due to adverse effects of fossil fuels. Since the continuity of renewable sources is the most critical concern for the sustainability of energy production, energy storage became an inherent concept of renewable energy technologies [109].…”

Section: Energy Storagementioning

confidence: 99%

A Review on Sewage Sludge Valorization via Hydrothermal Carbonization and Applications for Circular Economy

2022

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In pursuit of establishing a circular economy, a waste-to-energy approach is gaining increasing attention. Valorization of sewage sludge constitutes a critical importance due to generation in high quantities, difficulties in disposal, and associating environmental impacts. Hydrothermal carbonization (HTC) is a relatively recent yet an acclaimed method for sewage sludge management and valorization due to process compliance with sludge characteristics. In this review, research studies are evaluated via categorization of application fields of sludge-derived HTC products such as solid fuel production, gas production, soil remediation, nutrient recovery, water treatment, and energy storage. Research findings are compiled and a network mapping is employed for the visualization of the current situation and correlation in respective fields. The potential of HTC for sewage sludge valorization and future projections concerning available techniques are assessed within the context of circular economy.

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“…Therefore, the pyrolysis assisted chemical activation using ZnCl 2 led to the production of materials with high carbon content of above 89%, while oxygen was identified as the second dominant element, with a range of 5.12%-7.97%, featuring bad thermal stability at high temperatures. 62 This pyrolysis treatment process possibly causes the release of small amount of oxygen, while chemical activation using ZnCl 2 produces ZnO, leading to an exaggerated decline, resulting from the carbon-bond etches and disorders. In addition, there is also a tendency for imperfectly washing to increase the oxygen content.…”

Section: Elemental Analysismentioning

confidence: 99%

Porous activated carbon monolith with nanosheet/nanofiber structure derived from the green stem of cassava for supercapacitor application

et al. 2020

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Carbonization and activation have been exploited as an economic and efficient approach toward the production of porous activated carbon monolith derived from green stem of cassava (GSC). In addition, ZnCl 2 was used as a chemical activator agent at various concentrations, therefore serving as a key factor in the development of porous carbon. The carbonization process (N 2) was integrated with physical activation (CO 2), and then N 2 sorption, scanning electron microscopy, X-ray diffraction, energy dispersive X-ray were examined to evaluate the specific surface area, pore structure characteristic, morphology structure, crystallinity, and the surface element, respectively. Furthermore, cyclic voltammetry was used to measure the electrochemical performance, through a two-electrode system in 1M H 2 SO 4. Therefore, the synthesized porous activated carbon exhibits a micropores-mesopores combination, and the optimized sample demonstrated nanosheet and nanofiber structures. The results show a high electrochemical behavior in 1M H 2 SO 4 electrolytes, by the electrodes, with specific capacitance, energy, and power densities of 164.58 F g −1 , 22.86 Wh kg −1 , and 82.38 W kg −1 , respectively. This route confirms the opportunity of using novel GSC in the production of porous carbon monolith with nanosheet/nanofiber structure for supercapacitor applications. K E Y W O R D S activated carbon, carbon porous, green stem of cassava, monolith, supercapacitor 1 | INTRODUCTION Green, renewable, and sustainable sources of energy systems are obtainable through the conversion of wind, water, and solar energy, 1 hence proper capture and storage is required for environmental friendly and economic application. 2 Meanwhile, supercapacitors possessing high power density, high charge-discharge rate, long cycle life, have the ability to store energy in the form of electric charges, 3 by providing a performance between capacitors and batteries. Conversely, the difference between both is that capacitors store and deliver energy incredibly quickly, while batteries have an ability to store high energy densities and also high voltages. 4 However, the main challenge of supercapacitor is related to the energy density entry through the narrow gap of batteries. Several electrode materials have been developed and suggested to improve energy density, power density, and cycle life of supercapacitor, 5 and three types were identified. These were then classified into carbonaceous

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Conversion of model biomass to carbon-based material with high conductivity by using carbonization

Cited by 40 publications

References 34 publications

Preparation and Adsorption Properties of Green Sustainable Biomass Carbon Microspheres

Preparation and Adsorption Properties of Green Sustainable Biomass Carbon Microspheres

A Review on Sewage Sludge Valorization via Hydrothermal Carbonization and Applications for Circular Economy

Porous activated carbon monolith with nanosheet/nanofiber structure derived from the green stem of cassava for supercapacitor application

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