Preparation of coffee-shell activated carbon and its application for water vapor adsorption

Sun, Shengnan; Yu, Qiongfen; Li, Ming; Zhao, Hong; Wu, Chengyuan

doi:10.1016/j.renene.2019.04.097

Cited by 68 publications

(37 citation statements)

References 35 publications

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“…4, the apparent adsorption peaks around 3400 cm -1 are attributed to O-H stretching vibration in alcohol hydroxyl groups and phenol hydroxyl groups (Sun et al ). The adsorption peaks at 1200 cm −1 belong to C-O stretching vibration in the alcohol hydroxyl groups (Sun et al 2019). It is noteworthy that the absorption peak strength of BAC01 and BAC03 at 1200 and 3400 cm −1 is significantly higher than that of other adsorbents, which means that the BAC01 and BAC03 adsorbents contain high content of hydroxyl groups.…”

Section: Ft-ir Characterizationmentioning

confidence: 94%

Control of pore structure and surface chemistry of activated carbon derived from waste Zanthoxylum bungeanum branches for toluene removal in air

Lei

Xie

Chen

et al. 2020

Environ Sci Pollut Res

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Activated carbon adsorption has been considered the most efficient technology toward VOC removal. The waste biomass as alternates solved the problems of high price and nonrenewable of traditional raw materials. The waste Zanthoxylum bungeanum branches were firstly selected as raw materials to prepare activated carbons. Interestingly, the pore structure and surface chemistry can be successfully controlled by adjusting the heating rate. The hierarchical porous carbons exhibited great potential for toluene adsorption. The micro-mesopore structure possessed unique spatial effect; micropores played a dominant role in adsorption process, especially narrow micropores (pore size ≤ 1.0 nm) emerged stronger adsorptive force toward toluene molecules due to overlapping attractive forces from neighboring pore walls. And mesopores not only displayed excellent transport diffusion but also provided adsorption sites. Additionally, the high graphitization degree enhanced the interaction between graphene layer equipped electron-rich regions and π-electrons on the aromatic ring by the π-π conjugated effect. The hydroxyl and carbonyl functional groups served as chemisorption sites and led to higher adsorption amounts. Fortunately, the regeneration can be achieved by thermal treatment at the low temperature (≤ 150°C) or even gas purging at room temperature (20°C), which avoided an explosion accident in the process of high-temperature regeneration.

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Section: Ft-ir Characterizationmentioning

confidence: 94%

Control of pore structure and surface chemistry of activated carbon derived from waste Zanthoxylum bungeanum branches for toluene removal in air

Lei

Xie

Chen

et al. 2020

Environ Sci Pollut Res

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“…However, the loss increased up to 82.6% after the third cycle, and then a complete loss of 100% was achieved after the fifth cycle. These results can be attributed to the formation and accumulation of adsorbent residues due to decomposition of the carbon at the regeneration temperature, which was relatively high for organic compounds [11].…”

Section: Regeneration Capacity Of Ac and Macmentioning

confidence: 99%

“…2,4-D is labeled by different international agencies as a non-biodegradable carcinogenic and mutagenic compound [6], and it has been found in the water sources of different countries [7] such as Argentina (1.9 mg/L) [8], Colombia (0.001 mg/L) [9], Canada (0.002775 mg/L), Iran (0.016 mg/L), and Ireland (1 × 10 −6 mg/L) [10]. 2,4-D is among the 10 most used active agents in pesticides in the United States, and it is often used for essential crops such as sugarcane, corn, wheat, oats, and barley [11].…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon from Yam Peels Modified with Fe3O4 for Removal of 2,4-Dichlorophenoxyacetic Acid in Aqueous Solution

Herrera-García

Castillo

Patiño-Ruiz

et al. 2019

Water

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The removal of organic pollutants from water sources can be enhanced using suitable adsorbents. The aim of this research was to study the adsorption capacity and potential reuse of a magnetic adsorbent prepared from agricultural wastes of yam peels (Dioscorea rotundata) for 2,4-dichlorophenoxyacetic (2,4-D) acid removal. The procedure was performed through carbonization and activation at 400 and 500 °C, respectively. Then, the as-prepared activated carbon (AC) was chemically modified using magnetite (Fe3O4) nanoparticles. The AC and magnetic activated carbon (MAC) were characterized and then used for batch adsorption and regeneration tests at different pH, initial concentrations of 2,4-D, and temperature. AC and MAC were showed to have microporous structures with surface areas of 715 and 325 m2/g, respectively. Superparamagnetic behavior was observed for MAC with a saturation magnetization of 6 emu/g. The results from the batch experiments showed higher adsorption capacity at high initial concentration of 2,4-D, low pH, and room temperature. The thermodynamic parameters indicated that the experiments proceeded as exothermic and spontaneous adsorption. Our findings also showed that MAC can be separated from the water medium through a facile magnetic procedure, and from regeneration experiments, MAC showed better results with 60% of its initial adsorption capacity after five cycles. Hence, MAC was found to be a promising alternative adsorbent of pesticides in water.

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“…Carbon activation can be conducted through physical or chemical method. Physical method uses high temperature and gas flow such as water vapor, CO2, and N2 [27][28][29][30] , meanwhile, chemical activation uses chemical additives to the carbon, followed by heating treatment under inert gas atmosphere 27,28) . Physical activation is more environmental friendly, more simple and inexpensive.…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon from Bagasse and its Application for Water Vapor Adsorption

Ridassepri¹,

Rahmawati²,

Heliani³

et al. 2020

Evergreen

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This research study carbon activation prepared from Bagasse, a waste of sugar factory. The activation was conducted in water vapor at 600°C (C600) and 700 °C (C700). The activated carbon was then tested for water vapor adsorption. The produced-carbon has diffraction peak at 2θ of 25°, with surface area are 584.940 m²/g and 533.301 m²/g for C600 and C700, respectively. C600 also shows higher water vapor adsorption than C700, the value is 0.223 g/g. It shows a potency of Bagasse waste as raw material for adsorbent powder.

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Preparation of coffee-shell activated carbon and its application for water vapor adsorption

Cited by 68 publications

References 35 publications

Control of pore structure and surface chemistry of activated carbon derived from waste Zanthoxylum bungeanum branches for toluene removal in air

Control of pore structure and surface chemistry of activated carbon derived from waste Zanthoxylum bungeanum branches for toluene removal in air

Activated Carbon from Yam Peels Modified with Fe3O4 for Removal of 2,4-Dichlorophenoxyacetic Acid in Aqueous Solution

Activated Carbon from Bagasse and its Application for Water Vapor Adsorption

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