2017
DOI: 10.1016/j.jcou.2017.07.026
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Optimizing the properties of granular walnut-shell based KOH activated carbons for carbon dioxide adsorption

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Cited by 69 publications
(25 citation statements)
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“…From the above analysis, it suggests that the KOH modification does not completely change existing groups on the surface of adsorbent CPS; however, after modification, the functional groups favoring metal adsorption, such as the hydroxyl groups, increase greatly, and the adsorption capacity of modified samples (K-Ac) to heavy metals is enhanced significantly. The reason for this may be that the large specific surface area, porous structure, and good adsorption properties of K-Ac are increased and promoted by KOH activation at high temperatures [57,58,59].…”
Section: Resultsmentioning
confidence: 99%
“…From the above analysis, it suggests that the KOH modification does not completely change existing groups on the surface of adsorbent CPS; however, after modification, the functional groups favoring metal adsorption, such as the hydroxyl groups, increase greatly, and the adsorption capacity of modified samples (K-Ac) to heavy metals is enhanced significantly. The reason for this may be that the large specific surface area, porous structure, and good adsorption properties of K-Ac are increased and promoted by KOH activation at high temperatures [57,58,59].…”
Section: Resultsmentioning
confidence: 99%
“…The best result of CO2 adsorption was 4.66 mmol/g at 273 K and 1 bar by using pure AMC as an adsorbent . Chomiak and et al (2017) investigated that CO2 adsorption on microporous granular activated carbons (GACs) that has been prepared by KOH activation of walnut shell-based carbons. Carbons showed very high CO2 adsorption, at 273 K up to 7.2 and 18.2 mmol/g under 1 and 30 bar, respectively (Chomiak et al, 2017).…”
Section: Introductionmentioning
confidence: 99%
“…Chomiak and et al (2017) investigated that CO2 adsorption on microporous granular activated carbons (GACs) that has been prepared by KOH activation of walnut shell-based carbons. Carbons showed very high CO2 adsorption, at 273 K up to 7.2 and 18.2 mmol/g under 1 and 30 bar, respectively (Chomiak et al, 2017). Ma et al (2018) studied CO2 capture with nanoporous carbons materials which was prepared by using a metal-organic framework (MOF-5) as a template.…”
Section: Introductionmentioning
confidence: 99%
“…Novel carbons with much higher CO2 uptake might find a market but there is also an opportunity for activated carbons with comparable performance to those already existing but at a lower cost. In this context, the recycling of biomass wastes has received increasing attention in recent years [5,10,13,18,[20][21][22][23][24][25]. Their use as precursors for the production of porous carbons offers significant potential for reducing both the total costs of capture and the environmental impact resulting from uncontrolled disposal of residues.…”
Section: Introductionmentioning
confidence: 99%
“…However, in most cases, they are prepared via multi-step processes involving hazardous activating agents and a variety of side reagents such as solvents, bases, acids, catalysts, etc. [10,13,18,20,[23][24][25][26][27]. Such complexity hinders their implementation to large-scale sorbent production as much harmful residues are generated per carbon mass.…”
Section: Introductionmentioning
confidence: 99%