Sorption Properties of Carbonaceous Adsorbents Obtained by Pyrolysis and Activation of Pistachio Nut Shells

Nowicki, Piotr; Bazan, A.; Kazmierczak-Razna, Justyna; Pietrzak, Robert

doi:10.1260/0263-6174.33.6-8.581

Cited by 18 publications

(4 citation statements)

References 9 publications

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“…Similar results were obtained for methylene blue. For example, the adsorption capacities of the activated carbon samples studied are higher than those for chitosan–montmorillonite/polyaniline nanocomposite [ 34 ] and commercial activated carbon CWZ-22, but lower than for NORIT SX2 [ 35 ]. The adsorption capacities towards malachite green exceeded those for the composites of cellulose nanofiber and silver nanoparticles [ 36 ], reduced graphene oxide [ 37 ], and carbon obtained from date stones [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Removal of Organic Dyes from Aqueous Solutions by Activated Carbons Prepared from Residue of Supercritical Extraction of Marigold

et al. 2022

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In the present work, we reported on the efficiency of the removal of organic dyes by adsorption on activated carbons prepared from the residue of supercritical extraction of marigold. The performance of adsorbents prepared was tested towards methyl red, methylene blue, malachite green, and crystal violet at room temperature. The effects of carbonization (500 and 700 °C) and activation (700 and 800 °C) temperatures, textural parameters, and acid-base character of the adsorbent surface on the sorption properties of the activated carbons were established. Activated carbons are characterized by low developed specific surface area, from 2 to 206 m2/g, and have a basic character of the surface (pH of carbons water extracts ranging from 10.4 to 11.2). Equilibrium adsorption isotherms were investigated. The equilibrium data were analyzed in the Langmuir, Freundlich, and Temkin models. The adsorption capacities of activated carbons studied varied from 47.62 to 102.43 mg/g towards methyl red, 53.14 to 139.72 mg/g towards methyl red, 425.46 to 622.80 towards malachite green and 155.91 to 293.75 mg/g towards crystal violet, from their water solutions. Kinetics of the adsorption of the organic dyes studied were found to be described by the pseudo-second-order model. It was proven that through the physical activation of the residue of supercritical extraction of marigold, it is possible to obtain carbonaceous materials of very high adsorption capacity towards organic pollutants.

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Section: Resultsmentioning

confidence: 99%

Removal of Organic Dyes from Aqueous Solutions by Activated Carbons Prepared from Residue of Supercritical Extraction of Marigold

et al. 2022

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“…Nowicki et al [53] described the acid-base properties of the activated carbon produced through the pyrolysis technique and the consequent activation of the pistachio shells. The acidity was primarily dependent on the process of activation.…”

Section: Characterization Of Carbonaceous Materialsmentioning

confidence: 99%

Co-Gasification of Pistachio Shells with Wood Pellets in a Semi-Industrial Hybrid Cross/Updraft Reactor for Producer Gas and Biochar Production

Ryšavý,

Čespiva,

Kuboňová

et al. 2024

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The possibilities of pistachio shell biochar production on laboratory-scale gasification and pyrolysis devices have been described by several previous studies. Nevertheless, the broader results of the pistachio shell co-gasification process on pilot-scale units have not yet been properly investigated or reported, especially regarding the detailed description of the biochar acquired during the routine operation. The biochar was analysed using several analytical techniques, such as ultimate and proximate analysis (62%wt of C), acid–base properties analysis (pH 9.52), Fourier-transform infrared spectroscopy (the presence of –OH bonds and identification of cellulose, hemicellulose and lignin), Raman spectroscopy (no determination of Id/Ig ratio due to high fluorescence), and nitrogen physisorption (specific surface 50.895 m2·g−1). X-ray fluorescence analysis exhibited the composition of the main compounds in the biochar ash (32.5%wt of Cl and 40.02%wt of Na2O). From the energy generation point of view, the lower heating value of the producer gas achieved 6.53 MJ·m−3 during the co-gasification. The relatively high lower heating value of the producer gas was mainly due to the significant volume fractions of CO (6.5%vol.), CH4 (14.2%vol.), and H2 (4.8 %vol.), while hot gas efficiency accomplished 89.6%.

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“…Since the danger was realised, much effort has been devoted to improve the technologies and to fi nding effective methods for the separation of pollutants from liquid phase. The methods proposed for this purpose include removal on block copolymers, fl occulation, adsorption on activated carbons and carbon nanotubes, membrane methods of separation, including the method of separation under pressure [7][8][9][10][11][12][13][14][15] . From among many methods proposed, the use of membranes has enjoyed particular interest because of the low cost and simple application and these methods have been increasingly used for removal of different kind pollutants 16,17 .…”

Section: -3mentioning

confidence: 99%

Membranes obtained on the basis of cellulose acetate and their use in removal of metal ions from liquid phase

Krason

Pietrzak

2016

Polish Journal of Chemical Technology

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The polymer membranes containing 18 wt% of cellulose acetate and different amounts of polyvinylpyrrolidone (PVP) as a cross-linker agent were used in the process of iron and copper ions removal from liquid phase. Depending on the content of PVP (changed from 1 to 4 wt.%) the membrane surfaces were characterised by different hydrophilic character and showed the dominant presence of surface oxygen-containing groups of acidic character. Irrespectively of the concentrations of solvents from which the metal ions had to be removed, the membranes showed better ability to remove Fe 3+ ions than Cu 2+ ones, and the membrane resistances decreased with increasing content of PVP. After the fi ltrations of solutions with iron ions the fl ux recovery ratio took rather high values; this ratio increased with increasing PVP content in the membrane.

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Sorption Properties of Carbonaceous Adsorbents Obtained by Pyrolysis and Activation of Pistachio Nut Shells

Cited by 18 publications

References 9 publications

Removal of Organic Dyes from Aqueous Solutions by Activated Carbons Prepared from Residue of Supercritical Extraction of Marigold

Removal of Organic Dyes from Aqueous Solutions by Activated Carbons Prepared from Residue of Supercritical Extraction of Marigold

Co-Gasification of Pistachio Shells with Wood Pellets in a Semi-Industrial Hybrid Cross/Updraft Reactor for Producer Gas and Biochar Production

Membranes obtained on the basis of cellulose acetate and their use in removal of metal ions from liquid phase

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