Impact of chemical activation on selected adsorption features of powdered activated carbon

Skoczko, Iwona; Guminski, Remigiusz; Bos, Ewelina; Zgłobicka, Izabela

doi:10.5004/dwt.2021.27859

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…The final result was a product with a developed internal structure and high porosity, which after thermal processes is washed, dried and can be used as activated carbon. Activation of carbon can be physical and/or chemical [10,23,39]. In physical activation, to achieve the expected porosity, the most common reactants are: water steam (which is the most common and widely used agent), sometimes also air, CO 2 and oxygen.…”

Section: Activation Processmentioning

confidence: 99%

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Manufacturing Options for Activated Carbons with Selected Synthetic Polymers as Binders

Skoczko,

Szatyłowicz,

Tabor

et al. 2024

Materials

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Formed activated carbon (AC) is a multipurpose product with developed adsorption properties that is widely used in various areas of life. To create AC, hard coal has to go through various processes: grinding, granulation, carbonization, physical and/or chemical activation. Presented research was conducted in the professional company manufacturing activated carbons. Studied AC reached the demanded shape of grains thanks to binders added to granulation process. Research on the AC formed using new polymeric binders (applied so far in other branches: pharmacy and construction materials) is presented in this manuscript. Tested binders were not used before to manufacture ACs in the professional technological line. Such polymers as: sodium carboxymethylhydrocellulose (CMHC), poly[1-(2-oxo-1-pyrrolidinyl)ethylene] (POPE) and enriched methyl-hydroxypropyl cellulose MHPC were studied in this work. Conducted research has proven efficiency of 8% CMHC which allowed for proper granulation and carbonization and reached the best parameters. Single- and double-stage activation was investigated for AC with this binder. For newly manufactured AC BET surface and pore volume increased accordingly from 774 m2/g and 0.58 cm3/g (1-stage) to 968 m2/g and 0.72 cm3/g (2-stage). Chemical elemental features of surface of the best AC showed beside elementary carbon also calcium, silicon and aluminum ions as well as groups with an acidic character, phosphates, sulphates and chlorides. The new AC had a higher Mechanical Strength reaching 99.9% and a lower Ash content and Volatile Matter than AC manufactured with previous binder—molasse. The new AC is intended to be directed for full production line and implementation to usage after positive certification. It may be useful in water treatment. It will also find application in the treatment of industrial and municipal wastewater.

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Section: Activation Processmentioning

confidence: 99%

“…The properties of polymeric binders with relation to compressibility, density, matrix-binder interaction, etc. in solid dosage forms have been extensively studied for wet granulation too [19,[22][23][24][25]. Different binders can affect porous structure, adsorption capacity and other final AC characteristics.…”

Section: Introductionmentioning

confidence: 99%

Manufacturing Options for Activated Carbons with Selected Synthetic Polymers as Binders

Skoczko,

Szatyłowicz,

Tabor

et al. 2024

Materials

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Use of Sugar Cane Fibers as Raw Material for the Production of Activated Carbon

Skoczko¹,

Guminski²

2022

Innovations-Sustainability-Modernity-Openness Conference (ISMO’22)

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Comparative Study on the Adsorption Characteristics of Heavy Metal Ions by Activated Carbon and Selected Natural Adsorbents

Dong

Liu

et al. 2022

Sustainability

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In this study, adsorption of the heavy metal ions (Pb(II), Cu(II) and Cd(II)) from water by peanut shells (PS), sawdust (S) and commercial activated carbon (AC) were comparatively studied. Thus, the relationship between different adsorption parameters and different heavy metal ion removal rates was investigated. The adsorption capacity of the three adsorbents for heavy metal ions increased with an increase in temperature, pH value, contact time, adsorbent dosage, and heavy metal ion concentration, however, it decreased with an increase of adsorbent particle size. All the adsorption processes are better described by Langmuir isotherm or Freundlich isotherm. Thus, the results show good agreement with pseudo-second-order kinetics and the adsorption processes are spontaneous heat absorption processes. Herein, all adsorbents have higher affinity for Pb(II) ions, and hence possess higher removal rates. In addition, heavy metal ions were desorbed significantly at acidic conditions in the desorption experiments. The results demonstrate that PS can be used as a green adsorbent instead of AC for the adsorption of heavy metal ions from the water.

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Impact of chemical activation on selected adsorption features of powdered activated carbon

Cited by 3 publications

References 23 publications

Manufacturing Options for Activated Carbons with Selected Synthetic Polymers as Binders

Manufacturing Options for Activated Carbons with Selected Synthetic Polymers as Binders

Use of Sugar Cane Fibers as Raw Material for the Production of Activated Carbon

Comparative Study on the Adsorption Characteristics of Heavy Metal Ions by Activated Carbon and Selected Natural Adsorbents

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