Study on the removal of hazardous Congo red from aqueous solutions by chelation flocculation and precipitation flotation process.
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TLDR
In this article, a chelation-based removal of azo dye Congo red (CR) from simulated wastewaters via metal ions chelation flocculation followed by flotation separation was proposed, where the chelation mechanism suggested that CR molecules gradually changed from hydrazones to electronegative azo with the increase of pH to 6-7.About:
This article is published in Chemosphere.The article was published on 2021-11-29 and is currently open access. It has received 20 citations till now. The article focuses on the topics: Chelation & Flocculation.read more
Citations
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Insight into adsorption mechanism, modeling, and desirability function of crystal violet and methylene blue dyes by microalgae: Box-Behnken design application
Ahmed Saud Abdulhameed,Ali H. Jawad,Elmira Kashi,Khairul Adzfa Radzun,Z. Alothman,Lee D. Wilson +5 more
TL;DR: In this article , an environmentally friendly and efficient adsorbent of microalgae (MAG) was applied for the removal of crystal violet (CV) and methylene blue (MB) dyes from aqueous solutions.
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Aleppo pine seeds (Pinus halepensis Mill.) as a promising novel green coagulant for the removal of Congo red dye: Optimization via machine learning algorithm.
Amina Hadadi,Ali Imessaoudene,Jean-Claude Bollinger,Abdelkrim Bouzaza,Abdeltif Amrane,Hichem Tahraoui,Lotfi Mouni +6 more
TL;DR: In this paper , the active coagulating agent was extracted from Pinus halepensis mill, and used for the first time to remove Congo red dye, the influence of numerous factors on dye removal was evaluated in order to make comparisons with conventional coagulants.
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A Critical Review on the Removal and Recovery of Hazardous Cd from Cd-Containing Secondary Resources in Cu-Pb-Zn Smelting Processes
TL;DR: In this paper , a new route to treat Cd-containing solutions via the foam extraction method was proposed, which has the advantages of a short reaction time, large handling capacity, high removal efficiency, and simple operation equipment.
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Methylene blue removal from aqueous solutions using a biochar/gellan gum hydrogel composite: Effect of agitation mode on sorption kinetics.
Ahmed M. Elgarahy,Hamida Yossef Mostafa,E. G. Zaki,Shymaa M. El-Saeed,Khalid Z. Elwakeel,Abdullah Akhdhar,Eric Guibal +6 more
TL;DR: In this paper , a mixture of gellan gum and biochar is used to produce mesoporous hydrogel membranes for the treatment of Methylene Blue sorption at pH 10.5.
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Removal of Congo red dye from aqueous environment by zinc terephthalate metal organic framework decorated on silver nanoparticles-loaded biochar: Mechanistic insights of adsorption
K.S. Obayomi,Sie Yon Lau,Jianhua Zhang,Louise Meunier,Atunwa Bukola Taiwo,Biplob Kumar Pramanik,Mohammed M. Rahman +6 more
TL;DR: In this paper , a zinc terephthalate-metalorganic framework decorated on the surface of poultry manure-derived biochar was successfully fabricated and employed as nano-adsorbent material for Congo Red (CR)-treated aqueous solution.
References
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Removal of Orange-G and Methyl Violet dyes by adsorption onto bagasse fly ash—kinetic study and equilibrium isotherm analyses
TL;DR: In this paper, bagasse fly ash (BFA) was used as an adsorbent for the removal of Orange-G (OG), and Methyl Violet (MV), from aqueous solution.
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Aromatic amines from azo dye reduction: status review with emphasis on direct UV spectrophotometric detection in textile industry wastewaters
TL;DR: In this paper, the specific case of aromatic amines arising from the reduction of the azo bond of azo colorants is addressed, with emphasis on the recalcitrance of azos dyes, their demonstrated vulnerability to azos bond reduction through different mechanisms and the lack of data on the biodegradability of the resulting amines.
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Adsorptive removal of Congo red, a carcinogenic textile dye, from aqueous solutions by maghemite nanoparticles.
Abbas Afkhami,Razieh Moosavi +1 more
TL;DR: Synthesized maghemite nanoparticles showed the highest adsorption capacities of CR compared to many other adsorbents and would be a good method to increase adsorbent efficiency for the removal of CR in a wastewater treatment process.
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Removal of congo red using activated carbon and its regeneration
TL;DR: The surfactant enhanced carbon regeneration (SECR) technique using both cationic and anionic surfactants is adopted for the regeneration of spent carbon by desorbing the dye and a kinetic model for dye desorption from the commercial activated carbon (CAC) is proposed.
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Adsorption characteristics of Congo Red on coal-based mesoporous activated carbon
TL;DR: In this paper, the effect of solution ionic strength on the uptake of Congo red dye by two different mesoporous carbons was also investigated, and the equilibrium adsorption data were interpreted using Langmuir and Freundlich models.