Adsorption of lignite-derived humic acids on coal-based mesoporous activated carbons

Lorenc-Grabowska, Ewa; Gryglewicz, Grażyna

doi:10.1016/j.jcis.2004.10.031

Cited by 138 publications

(76 citation statements)

References 30 publications

(61 reference statements)

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“…At all the pH values they employed, the HA loadings for the microporous carbons did not exceed 20 mg/g, whereas the mesoporous carbon achieved a maximum loading of 100 mg/g. Similar results were obtained by Lorenc-Grabowska and Gryglewicz [58], who studied the adsorption of HAs on coal-based mesoporous ACs. They found that as mesoporosity increased, so did the percentage removal of HAs.…”

Section: Adsorption Of Humic Acidsupporting

confidence: 87%

Adsorption of polluting substances on activated carbons prepared from rice husk and sugarcane bagasse

Kalderis

Koutoulakis

Paraskeva

et al. 2008

Chemical Engineering Journal

190

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Section: Adsorption Of Humic Acidsupporting

confidence: 87%

Adsorption of polluting substances on activated carbons prepared from rice husk and sugarcane bagasse

Kalderis

Koutoulakis

Paraskeva

et al. 2008

Chemical Engineering Journal

190

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“…They have been employed over the last few decades in a wide number of applications on an industrial scale, including technologies for the purification of gases, the removal of organic pollutants from water, as a catalyst or a catalyst support in catalytic processes, and as electrode materials in electrochemical devices and processes. The application of activated carbon in adsorption processes mainly depends on the surface chemistry and pore structure of porous carbons (Bhatnagar et al 2013;Lorenc-Grabowska and Gryglewicz 2005;Frackowiak and Beguin 2001;Gryglewicz et al 2005;Santiago et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Optimization of Mesoporous Activated Carbon from Coconut Shells by Chemical Activation with Phosphoric Acid

Wang¹,

Li²,

Li³

et al. 2013

BioResources

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Mesoporous activated carbons were prepared from coconut shells by the method of chemical activation with H 3 PO 4 . Effects of main influence factors on the yield and adsorption properties of activated carbon were studied via orthogonal experiments. Experimental results under the optimum conditions were as follows: the yield of the activated carbon was 36.90%; methylene blue adsorption was 21.5 mL/0.1 g; and the iodine number was 889.36 mg/g. The surface area of the activated carbon prepared was 891 m 2 /g, as determined by the BET method. HorvathKawazoe equations (H-K) and density functional theory (DFT) were introduced to analyze the porous structures of the activated carbon. It was shown that the activated carbon was mesoporous, with a total pore volume of 0.7233 mL/g, a micropore volume of 37.06%, a mesopore volume of 62.85%, and a macropore volume of 0.07%. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) studies demonstrated the results of the pore structure analysis.

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“…2) and Freundlich (Eq. 3) models give the best fit [36][37][38][39][40][41][42], hence in this work only the two models were used to interpret the data. where q e is the equilibrium dye concentration on the adsorbent (mg g −1 ), c e is the equilibrium dye concentration in solution (mg dm −3 ), q max is the monolayer capacity of the adsorbent (mg g −1 ), and b is the Langmuir adsorption constant (dm 3 mg −1 ).…”

Section: Removal Of Phenol and Congo Redmentioning

confidence: 99%

Tailoring mesoporosity of poly(furfuryl alcohol)-based activated carbons and their ability to adsorb organic compounds from water

Lorenc-Grabowska

Rutkowski

2018

J Mater Cycles Waste Manag

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In this work it was shown that polymers can be recycled into a promising adsorbent for organic dyes and phenols waste removal. For this, a series of activated carbons (ACs) were produced from mixture of ferrocene or titanium acetylacetonate with poly(furfuryl alcohol) (PFA) by steam activation. The introduction of ferrocene as Fe precursor was found to be an efficient catalyst in mesoporosity development during carbonization and subsequent steam activation at 850 °C, whereas the polymer based only and titanium-doped ACs are typically microporous. The porous structure parameters were determined from nitrogen adsorption isotherms measured at 77 K. Scanning electron microscopy was applied to monitor the metal distribution of metal-loaded char and the surface morphology of activated carbons. The adsorption capacity was found to be dependent mainly on pore size distribution. In the case of phenol adsorption, the adsorption was defined by volume of pore with size 0.8-1.4 nm; whereas, for Congo red best fit was observed for volume of pore with size 2-5 nm.

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Adsorption of lignite-derived humic acids on coal-based mesoporous activated carbons

Cited by 138 publications

References 30 publications

Adsorption of polluting substances on activated carbons prepared from rice husk and sugarcane bagasse

Adsorption of polluting substances on activated carbons prepared from rice husk and sugarcane bagasse

Optimization of Mesoporous Activated Carbon from Coconut Shells by Chemical Activation with Phosphoric Acid

Tailoring mesoporosity of poly(furfuryl alcohol)-based activated carbons and their ability to adsorb organic compounds from water

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