Single and bicomponent anionic dyes adsorption equilibrium studies on magnolia-leaf-based porous carbons

Porous carbons with a high specific surface area (2314–3470 m2 g−1) are prepared via a novel KCl-assisted activation strategy for high-performance supercapacitor.

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Evaluation of Porous Carbon Adsorbents Made from Rice Husks for Virus Removal in Water

Water ◽

10.3390/w13091280 ◽

2021 ◽

Vol 13 (9) ◽

pp. 1280

Author(s):

Vu Duc Canh ◽

Seiichiro Tabata ◽

Shun Yamanoi ◽

Yoichi Onaka ◽

Toshiyuki Yokoi ◽

...

Keyword(s):

Porous Carbon ◽

Activated Carbons ◽

Carbon Adsorbents ◽

Rice Husks ◽

Porous Carbons ◽

Inorganic Pollutants ◽

Steam Activation ◽

Virus Removal ◽

Silica Removal ◽

Effective Removal

Porous carbons are well-known efficient adsorbents for a variety of organic and inorganic pollutants; however, they have difficulty in virus removal. In this study, novel porous carbons (NPCs) (NPC-A, NPC-B, and NPC-C) derived from rice husks were compared with commercially available activated carbons (ACs) for their ability to remove MS2 bacteriophages (MS2) in a batch experiment. NPC-A was produced by the silica removal process. NPC-B was prepared with an additional steam activation applied to NPC-A. NPC-C was obtained with an additional acid rinse applied to NPC-B. The NPCs (particularly NPC-C) exhibited effective removal of up to 5.3 log10 of MS2, which was greater than that of less than 2.7 log10 obtained by other ACs under 10 g/L during the same contact time (60 min). The pore size distribution of the porous carbon adsorbents was found to influence their virus removal performance. The adsorbents with a larger proportion of pores ranging from 200–4500 nm in diameter were able to achieve higher virus removal rates. Thus, NPCs (particularly NPC-C), which had a larger volume of pores ranging from 200–4500 nm in size, demonstrated the potential for use as efficient adsorbents for removing viruses during water purification.

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Removal of Dyes from Aqueous Solutions by Adsorption on Chrome-Tanned Solid Wastes Generated in the Leather Industry

Water Quality Research Journal ◽

10.2166/wqrj.2003.025 ◽

2003 ◽

Vol 38 (2) ◽

pp. 393-411 ◽

Cited By ~ 18

Author(s):

Soufiane Tahiri ◽

Ali Messaoudi ◽

Abderrahman Albizane ◽

Mohamed Azzi ◽

Mohamed Bouhria ◽

...

Keyword(s):

Aqueous Solutions ◽

Operating Conditions ◽

Solid Wastes ◽

Cationic Dyes ◽

Optimum Operating ◽

Leather Industry ◽

Anionic Dyes ◽

Ph Values ◽

Acidic Conditions ◽

Dyes Adsorption

Abstract In this work, the ability of chrome shavings and of crust leather buffing dusts to remove dyes from aqueous solutions has been studied. Buffing dusts proved to be a much better adsorbent than chrome shavings for cationic dyes. The adsorption of anionic dyes is very important on two studied wastes. The pH has an obvious influence on the adsorption of dyes. Adsorption of cationic dyes is less favourable under acidic conditions (pH <3.5) and at high pH values (pH >10.5). The adsorption of anionic dyes on both adsorbents is more favourable under acidic conditions (pH <3). The adsorption on chrome shavings is improved by the use of finer particles. The kinetic adsorption was also studied. Adsorption isotherms, at the optimum operating conditions, were determined. Adsorption follows the Langmuir model. The isotherm parameters have been calculated. The column technique could be applied to treat significant volumes of solutions.

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Enteromorpha based porous carbons activated by zinc chloride for supercapacitors with high capacity retention

RSC Advances ◽

10.1039/c4ra13428a ◽

2015 ◽

Vol 5 (21) ◽

pp. 16575-16581 ◽

Cited By ~ 33

Author(s):

Mingbo Wu ◽

Peng Li ◽

Yang Li ◽

Jun Liu ◽

Yang Wang

Keyword(s):

Specific Surface ◽

Specific Capacitance ◽

Surface Area ◽

Specific Surface Area ◽

Zinc Chloride ◽

Porous Carbon ◽

High Capacity ◽

Porous Carbons ◽

Capacity Retention

Porous carbons were prepared from enteromorpha with ZnCl2 as active reagent. The prepared porous carbon with a specific surface area of 1651 m2 g−1 exhibited a specific capacitance of 206 F g−1 and capacity retention of 93% even after 5000 cycles.

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Biomass-derived O, N-codoped hierarchically porous carbon prepared by black fungus and Hericium erinaceus for high performance supercapacitor

RSC Advances ◽

10.1039/d1ra03699h ◽

2021 ◽

Vol 11 (45) ◽

pp. 27860-27867

Author(s):

Xinxian Zhong ◽

Quanyuan Mao ◽

Zesheng Li ◽

Zhigao Wu ◽

Yatao Xie ◽

...

Keyword(s):

Porous Carbon ◽

High Performance ◽

Porous Carbons ◽

Active Materials ◽

Hierarchically Porous ◽

Hericium Erinaceus

Biomass-derived heteroatom self-doped porous carbons are expected to become ideal active materials for high performance supercapacitor.

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Rich N/O/S co-doped porous carbon with a high surface area from silkworm cocoons for superior supercapacitors

New Journal of Chemistry ◽

10.1039/c9nj04195h ◽

2019 ◽

Vol 43 (48) ◽

pp. 19372-19378 ◽

Cited By ~ 1

Author(s):

Jianyu Huang ◽

Simin Liu ◽

Zifang Peng ◽

Zhuoxian Shao ◽

Yuanyuan Zhang ◽

...

Keyword(s):

Surface Area ◽

Porous Carbon ◽

Electrode Materials ◽

Synergistic Effects ◽

High Surface ◽

High Surface Area ◽

Porous Carbons ◽

Co Doped

The synergistic effects of high surface area and abundant heteroatoms make porous carbons superior electrode materials.

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Bimetallic MOF-templated synthesis of alloy nanoparticle-embedded porous carbons for oxygen evolution and reduction reactions

Dalton Transactions ◽

10.1039/c9dt02943e ◽

2019 ◽

Vol 48 (37) ◽

pp. 13953-13959 ◽

Cited By ~ 6

Author(s):

Zakary Lionet ◽

Shun Nishijima ◽

Tae-Ho Kim ◽

Yu Horiuchi ◽

Soo Wohn Lee ◽

...

Keyword(s):

Metal Nanoparticles ◽

Oxygen Evolution ◽

Porous Carbon ◽

Metal Organic Frameworks ◽

Carbon Matrix ◽

Porous Carbons ◽

Reduction Reactions ◽

Templated Synthesis ◽

Metal Organic

Pyrolysis of metal–organic frameworks (MOFs) to produce metal nanoparticles embedded inside a porous carbon matrix (M@PC) has drawn a lot of attention in recent years.

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Nano Porous Carbon Derived from Citrus Pomace for the Separation and Purification of PMFs in Citrus Processing Wastes

Nanomaterials ◽

10.3390/nano10101914 ◽

2020 ◽

Vol 10 (10) ◽

pp. 1914

Author(s):

Zhenqing Li ◽

Xin Chen ◽

Lulu Qiu ◽

Yu Wang ◽

Zhiqin Zhou

Keyword(s):

Bioactive Compounds ◽

Porous Carbon ◽

Added Value ◽

Citrus Fruits ◽

Separation And Purification ◽

Porous Carbons ◽

Citrus Juice ◽

Juice Processing ◽

Processing Wastes ◽

Adsorption Desorption

The by-product of citrus juice processing is a huge source of bioactive compounds, especially polymethoxyflavones (PMFs) and fibers. In this study, a method for the separation and purification of PMFs from citrus pomace was established based on citrus nanoporous carbon (CNPC) enrichment. Different biomass porous carbons were synthesized, their adsorption/desorption characteristics were evaluated, and the CNPCs from the peel of Citrus tangerina Tanaka were found to be best for the enrichment of PMFs from the crude extracts of citrus pomace. Using this method, six PMF compounds including low-abundant PMFs in citrus fruits such as 5,6,7,4′-tetramethoxyflavone and 5-hydroxy-6,7,8,3′,4′-pentamethoxyflavone can be simultaneously obtained, and the purities of these compounds were all higher than 95%, with the highest purity of nobiletin reaching 99.96%. Therefore, CNPCs have a great potential for the separation and purification of PMFs in citrus processing wastes, potentially improving the added value of citrus wastes. We also provide a method reference for disposing of citrus pomace in the future.

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Dyes Adsorption Behavior of Fe3O4 Nanoparticles Functionalized Polyoxometalate Hybrid

Molecules ◽

10.3390/molecules24173128 ◽

2019 ◽

Vol 24 (17) ◽

pp. 3128 ◽

Cited By ~ 3

Author(s):

Jie Li ◽

Chen Si ◽

Haiyan Zhao ◽

Qingxi Meng ◽

Bowen Chang ◽

...

Keyword(s):

Adsorption Kinetics ◽

Removal Rate ◽

Aqueous System ◽

Blocking Temperature ◽

Isotherm Models ◽

Zero Field ◽

Magnetic Adsorbent ◽

Anionic Dyes ◽

Desorption Process ◽

Dyes Adsorption

The magnetic adsorbent, Fe3O4@[Ni(HL)2]2H2[P2Mo5O23]·2H2O (Fe3O4@1), is synthesized by employing the nanoparticles Fe3O4 and polyoxometalate hybrid 1. Zero-field-cooled (ZFC) and field-cooled (FC) curves show that the blocking temperature of Fe3O4@1 was at 120 K. Studies of Fe3O4@1 removing cationic and anionic dyes from water have been explored. The characterization of Fe3O4@1, effects of critical factors such as dosage, the concentration of methylene blue (MB), pH, adsorption kinetics, isotherm, the removal selectivity of substrate and the reusability of Fe3O4@1 were assessed. The magnetic adsorbent displayed an outstanding removal activity for the cationic dye at a broad range of pH. The adsorption kinetics and isotherm models revealed that the adsorption process of Fe3O4@1 was mainly governed via chemisorption. The maximum capacity of Fe3O4@1 adsorbing substance was 41.91 mg g−1. Furthermore, Fe3O4@1 showed its high stability by remaining for seven runs of the adsorption-desorption process with an effective MB removal rate, and could also be developed as a valuable adsorbent for dyes elimination from aqueous system.

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