Sustainable porous carbons from lignocellulosic wastes obtained from the extraction of tannins

Ruíz, B.; Ruisánchez, E.; Gil, R.R.; Ferrera-Lorenzo, N.; Lozano, M.S.; Fuente, E.

doi:10.1016/j.micromeso.2014.09.004

Cited by 20 publications

(8 citation statements)

References 34 publications

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“…Alkali activating agents K 2 CO 3 and KOH have been widely used and reported in the activation of carbonaceous materials. They were selected in this study due to previous experience on the activation of lignocellulosic waste (Ruiz et al, 2015). Generally, it is known that KOH is a more reactive agent than K 2 CO 3 at a same activating temperature.…”

Section: Effect Of the Activation Conditions On The Carbon Developmentmentioning

confidence: 99%

Sewage biogas efficient purification by means of lignocellulosic waste-based activated carbons

Santos-Clotas

Cabrera-Codony

Ruíz

et al. 2019

Bioresource Technology

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The present paper evaluates the efficiency of sustainable activated carbons obtained from the valorization of lignocellulosic waste in removing siloxanes and volatile organic compounds for the purification of anaerobic digester biogas. Pyrolized and non-pyrolized lignocellulosic residues generated in food and wood industries were used as precursor materials to obtain experimental adsorbents by a chemical activation process using several activating agents. The highest porosity was obtained by non-pyrolized residue activated by K 2 CO 3 at 900 ºC. The performance of the experimental materials was compared with that of commercial activated carbons in gas adsorption tests of siloxanes (octamethylcyclotetrasiloxane and hexamethyldisiloxane) and volatile organic compounds (toluene and limonene). The waste-based activated carbons developed in this work proved to be more efficient for the removal of both siloxanes and VOCs than the commercial samples in most of the conditions tested. Adsorption capacities correlated with porosity, while the more relevant pore size depends on the adsorbate.

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Section: Effect Of the Activation Conditions On The Carbon Developmentmentioning

confidence: 99%

Sewage biogas efficient purification by means of lignocellulosic waste-based activated carbons

Santos-Clotas

Cabrera-Codony

Ruíz

et al. 2019

Bioresource Technology

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“…Since surface area, porous structure, and surface chemistry are the most important properties of AC that directly affect their performance in various applications, most studies focus on developing innovative strategies to engineer the porous structure and surface chemistry of AC. For example, the surface area can be tuned by pre‐treatment . Pre‐pyrolysis at 600 °C was found to significantly increase the specific surface area of chemically activated celtuce leaves .…”

Section: Preparation Of Waste‐derived Carbon‐based Functional Materialsmentioning

confidence: 99%

Carbon‐Based Functional Materials Derived from Waste for Water Remediation and Energy Storage

et al. 2017

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Carbon-based functional materials hold the key for solving global challenges in the areas of water scarcity and the energy crisis. Although carbon nanotubes (CNTs) and graphene have shown promising results in various fields of application, their high preparation cost and low production yield still dramatically hinder their wide practical applications. Therefore, there is an urgent call for preparing carbon-based functional materials from low-cost, abundant, and sustainable sources. Recent innovative strategies have been developed to convert various waste materials into valuable carbon-based functional materials. These waste-derived carbon-based functional materials have shown great potential in many applications, especially as sorbents for water remediation and electrodes for energy storage. Here, the research progress in the preparation of waste-derived carbon-based functional materials is summarized, along with their applications in water remediation and energy storage; challenges and future research directions in this emerging research field are also discussed.

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“…More recently, biomass based activated porous carbons derived from acacia fruits [17], poplar anthars, [52] and pine nut shells, [53] give high CO 2 adsorption capacities of 3.748 mmol g -1 , 4.18 mmol g -1 , and 5.0 mmol g -1 , respectively, 25 °C and 1 bar, which can be attributed to the significantly higher surface areas (>1400 m 2 g -1 ) comprised primarily of micropores formed by harsh KOH activating conditions. Furthermore, metal organic frameworks have shown CO 2 capture capacities as high as 6.4 mmol g-1 under dry conditions, however, these materials are susceptible to effects from water.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Preparation and CO2 adsorption properties of soft-templated mesoporous carbons derived from chestnut tannin precursors

Nelson

Mahurin

Mayes

et al. 2016

Microporous and Mesoporous Materials

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This work presents a soft templating approach for mesoporous carbon using the polyphenolic heterogeneous biomass, chestnut tannin, as the carbon precursor. By varying synthesis parameters such as tannin:surfactant ratio, cross-linker, reaction time and acid catalyst, the pore structure could be controllably modulated from lamellar to a more ordered hexagonal array. Carbonization at 600 °C under nitrogen produced a bimodal micro-mesoporous carbonaceous material exhibiting enhanced hydrogen bonding with the soft template, similar to that shown by soft-templating of phenolic-formaldehyde resins, allowing for a tailorable pore size. By utilizing the acidic nature of chestnut tannin (i.e. gallic and ellagic acid), hexagonal-type mesostructures were formed without the use of an acid catalyst. The porous carbon materials were activated with ammonia to increase the available surface area and incorporate nitrogen-containing functionality which led to a maximum CO 2 adsorption capacity at 1 bar of 3.44 mmol/g and 2.27 mmol/g at 0 ºC and 25 ºC, respectively. The ammonia-activated carbon exhibited multiple peaks in the adsorption energy distribution which indicates heterogeneity of adsorption sites for CO 2 capture.

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Sustainable porous carbons from lignocellulosic wastes obtained from the extraction of tannins

Cited by 20 publications

References 34 publications

Sewage biogas efficient purification by means of lignocellulosic waste-based activated carbons

Sewage biogas efficient purification by means of lignocellulosic waste-based activated carbons

Carbon‐Based Functional Materials Derived from Waste for Water Remediation and Energy Storage

Preparation and CO2 adsorption properties of soft-templated mesoporous carbons derived from chestnut tannin precursors

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