000076986 001__ 76986
000076986 005__ 20201023135859.0
000076986 0247_ $$2doi$$a10.1016/j.cej.2018.01.092
000076986 0248_ $$2sideral$$a106389
000076986 037__ $$aART-2018-106389
000076986 041__ $$aeng
000076986 100__ $$0(orcid)0000-0002-0118-3254$$aManyà, J.J.$$uUniversidad de Zaragoza
000076986 245__ $$aUltra-microporous adsorbents prepared from vine shoots-derived biochar with high CO2 uptake and CO2/N2 selectivity
000076986 260__ $$c2018
000076986 5060_ $$aAccess copy available to the general public$$fUnrestricted
000076986 5203_ $$aThere is a growing interest in developing renewable biomass-based adsorbents to be used in numerous applications, including CO2 capture in postcombustion conditions. In the present study, several activated carbons (ACs) were produced from vine shoots-derived biochar through both physical and chemical activation using CO2 and KOH, respectively. The performance of these ACs was tested in terms of CO2 uptake capacity at an absolute pressure of 15 kPa and at different temperatures (0, 25, and 75 °C), apparent selectivity towards CO2 over N2, and isosteric heat of adsorption. At 25 °C, the chemically ACs with KOH impregnation exhibited the highest CO2 adsorption capacity, which was similar or even higher than those recently reported for a number of carbon-based adsorbents. However, the AC prepared through physical activation with CO2 at 800 °C and a soaking time of 1 h appears as the most promising adsorbent analyzed here, due to its higher CO2 uptake capacity and adsorption rate at relatively high temperature (75 °C), its relatively high selectivity at this temperature, and its apparently low energy demand for regeneration. Given that physical activation with CO2 is more feasible at industrial scale than chemical activation using corrosive alkalis, the results reported here are encouraging for further development of vine shoots-derived adsorbents.
000076986 536__ $$9info:eu-repo/grantAgreement/ES/DGA/FSE$$9info:eu-repo/grantAgreement/ES/DGA/GPT$$9info:eu-repo/grantAgreement/ES/MINECO/ENE2013-47880-C3-1-R
000076986 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000076986 590__ $$a8.355$$b2018
000076986 591__ $$aENGINEERING, ENVIRONMENTAL$$b2 / 52 = 0.038$$c2018$$dQ1$$eT1
000076986 591__ $$aENGINEERING, CHEMICAL$$b6 / 138 = 0.043$$c2018$$dQ1$$eT1
000076986 592__ $$a2.066$$b2018
000076986 593__ $$aChemical Engineering (miscellaneous)$$c2018$$dQ1
000076986 593__ $$aChemistry (miscellaneous)$$c2018$$dQ1
000076986 593__ $$aIndustrial and Manufacturing Engineering$$c2018$$dQ1
000076986 593__ $$aEnvironmental Chemistry$$c2018$$dQ1
000076986 593__ $$aEngineering (miscellaneous)$$c2018$$dQ4
000076986 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000076986 700__ $$0(orcid)0000-0001-7125-4997$$aGonzález, B.$$uUniversidad de Zaragoza
000076986 700__ $$0(orcid)0000-0002-7114-3506$$aAzuara, M.
000076986 700__ $$aArner, G.
000076986 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000076986 773__ $$g345 (2018), 631-639$$pChem. eng. j.$$tCHEMICAL ENGINEERING JOURNAL$$x1385-8947
000076986 8564_ $$s462642$$uhttps://zaguan.unizar.es/record/76986/files/texto_completo.pdf$$yPostprint
000076986 8564_ $$s29295$$uhttps://zaguan.unizar.es/record/76986/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000076986 909CO $$ooai:zaguan.unizar.es:76986$$particulos$$pdriver
000076986 951__ $$a2020-10-23-13:53:25
000076986 980__ $$aARTICLE