Adsorption behavior of Congo red on a carbon material based on humic acid

Wang, An; Li, Boyuan; Wang, Yatong; Sun, Xin; Huang, Zhian; Bian, Simeng; Fan, Kaili; Shang, Hongzhou

doi:10.1039/d1nj03926a

Cited by 7 publications

(2 citation statements)

References 58 publications

(45 reference statements)

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“…Direct Red 28), from wastewaters. This mesoporous material possesses high surface area and many Al-O bonds, both enhancing its adsorption potential compared to the raw HA [135].…”

Section: Humic-matrix Hybrid Materials In the Removal Of Dyesmentioning

confidence: 99%

Macromolecular Size and Architecture of Humic Substances Used in the Dyes’ Adsorptive Removal from Water and Soil

Fragouli,

Roulia,

Vassiliadis

2023

Agronomy

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Humic substances are naturally occurring materials composed of complex biogenic mixtures of substituted aromatic and aliphatic hydrocarbon core materials derived from the degradation and decomposition of dead plant and animal matter. They are ubiquitous in both terrestrial and aquatic systems constituting biotic pools and are characterized by unique properties; they are amphiphilic redox compounds with exceptional chelating features. Humic substances play a crucial role in both agriculture and the environment as carbon sequestrators, soil improvers, plant health promoters, as well as stabilizers of soil aggregates and regulators of organic/inorganic nutrients bioavailability. This review article attempts to summarize current knowledge about the molecular nature and characterization techniques employed for the study of humic substances worldwide as the chemistry of their components differs markedly and depends on natural processes, several abiotic and biotic factors, the origin of the organic matter, and their complexation with inorganic, e.g., metal-ion, compounds. This work is equally concerned with the association of humic substances with dyes, a notorious pollutant, responsible for various environmental issues generally arising from the discharge of untreated effluents into soils and water bodies. Azo dyes, in particular, negatively affect soil microbial communities, as well as plant germination and growth. The aim is to feature the potential contribution of humic substances as novel materials for environment-friendly and sustainable processes.

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“…Direct Red 28), from wastewaters. This mesoporous material possesses high surface area and many Al-O bonds, both enhancing its adsorption potential compared to the raw HA [135].…”

Section: Humic-matrix Hybrid Materials In the Removal Of Dyesmentioning

confidence: 99%

Macromolecular Size and Architecture of Humic Substances Used in the Dyes’ Adsorptive Removal from Water and Soil

Fragouli,

Roulia,

Vassiliadis

2023

Agronomy

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“…For many decades, adsorption process has been the most famous and most used wastewater treatment technique for removing aqueous pollutants 33 – 35 . Recently, the removal of CR 36 , 37 , BG 38 , 39 , MB 40 , 41 , and MR 42 , 43 from colored aqueous solution was conducted successfully. PA-12 is new in the area of environmental science.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of polyamide-12/cement nanocomposite and its testing for different dyes removal from aqueous solution: characterization, adsorption, and regeneration studies

Aldahash

Higgins

Siddiqui

et al. 2022

Sci Rep

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Polyamide-12/Portland cement nanocomposite was prepared by using the exfoliated adsorption method. The fabricated nanocomposite was applied first time to remove Congo red (CR), brilliant green (BG), methylene blue (MB), and methyl red (MR) from the synthetic wastewater. The polymer nanocomposite was characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, elemental mapping, Brunauer–Emmett–Teller surface area analysis, and X-ray diffraction. The adsorption was rapid and all the studied dyes were absorbed on the surface of the polymer nanocomposite in 90 min. The point of zero charge was found at pH 5 and the factors such as pH, time, and temperature were found to affect the adsorption efficiency. Freundlich isotherm and pseudo-second-order models well-fitted the adsorption isotherm and kinetics data, respectively. The calculated maximum adsorption capacity was 161.63, 148.54, 200.40, and 146.41 mg/g for CR, BG, MB, and MR, respectively. The mode of the adsorption process was endothermic, spontaneous, and physical involving electrostatic attraction. On an industrial scale, the high percentage of desorption and slow decrease in the percentage of adsorption after every five regeneration cycles confirm the potential, practicality, and durability of the nanocomposite as a promising and advanced adsorbent for decolorization of colored wastewater.

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Cyclodextrin@TiO2 Preparation of Bidirectional Composites for TCH Removal by Photocatalytic Synergistic Adsorption

Song,

Chen,

Wei

et al. 2023

J Polym Environ

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Adsorption behavior of Congo red on a carbon material based on humic acid

Abstract: In this study, a carbon composite based on humic acid (CAH) was synthesized by partially carbonizing humic acid by using aluminum sulfate with a mass ratio of 2:3 and a...

Cited by 7 publications

References 58 publications

Macromolecular Size and Architecture of Humic Substances Used in the Dyes’ Adsorptive Removal from Water and Soil

Macromolecular Size and Architecture of Humic Substances Used in the Dyes’ Adsorptive Removal from Water and Soil

Fabrication of polyamide-12/cement nanocomposite and its testing for different dyes removal from aqueous solution: characterization, adsorption, and regeneration studies

Cyclodextrin@TiO2 Preparation of Bidirectional Composites for TCH Removal by Photocatalytic Synergistic Adsorption

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