Ozonation, electrochemical, and biological methods for the remediation of malachite green dye wastewaters: A mini review

Oladoye, Peter Olusakin; Ajiboye, Timothy Oladiran; Wanyonyi, Wycliffe Chisutia; Omotola, Elizabeth Oyinkansola; Oladipo, Mayowa Ezekiel

doi:10.1016/j.scenv.2023.100033

Cited by 15 publications

(1 citation statement)

References 69 publications

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“…Various treatment methods have been developed and used to remove organic pollutants from aqueous solutions, including physical, chemical, biological and hybrid approaches. Several review articles have discussed the removal of synthetic organic dyes from wastewater using physical adsorption [17][18][19][20], biological degradation [10,21] and advanced chemical oxidation processes [22,23], such as photocatalysis [24,25], ozonation [26], sulfate-radical [27,28] and Fenton and Fenton-like oxidation [29,30]. Table 1 summarizes the advantages and limitations of various treatment methods for organic dye wastewater treatment.…”

Section: Introductionmentioning

confidence: 99%

Advancements in application of modified biochar as a green and low-cost adsorbent for wastewater remediation from organic dyes

Hama Aziz,

Fatah,

Muhammad

2024

R. Soc. Open Sci.

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Synthetic organic dyes, which are resistant to biodegradation, pose a notable health risk, potentially leading to cancer and respiratory infections. Researchers have addressed this concern by exploring physicochemical methods to remove organic dyes from wastewater. A particularly promising solution involves modified biochar adsorbents, which demonstrate high efficiency in organic dye removal. Biochar, a charcoal-like material derived from biomass pyrolysis, offers advantages such as low cost, eco-friendliness, high efficiency and reusability. Beyond its role in sustainable soil remediation, biochar proves effective in removing organic dyes from wastewater after undergoing physical or chemical modification. Acid–base activation or metal–heteroatom impregnation enhances biochar's adsorption capacity. This comprehensive review examines the attributes of biochar, common methods for production and modification, and the impacts of raw materials, pyrolysis temperature, heating rate and residence time. It further elucidates the biochar adsorption mechanism in the removal of organic dyes, assessing factors influencing efficiency, including biochar feedstock, solution pH, adsorption temperature, particle size, initial dye concentration, biochar dosage and reaction time. It explores challenges, opportunities, reusability and regeneration methods of biochar in treating organic dye wastewater. It also discusses recent advances in organic dye removal using adsorption-based biochar. The review ultimately advocates for enhancing biochar's adsorption performance through post-modification.

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Section: Introductionmentioning

confidence: 99%

Advancements in application of modified biochar as a green and low-cost adsorbent for wastewater remediation from organic dyes

Hama Aziz,

Fatah,

Muhammad

2024

R. Soc. Open Sci.

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Fabrication of nanozeolite-Y/chitosan composite based on rice husks for efficient adsorption of methylene blue dye: kinetic and thermodynamic studies

Braish,

Hassan,

El-Essawy

et al. 2024

Adsorption

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In this work, three solid adsorbents were synthesized, namely, nanozeolite-Y prepared from rice husks ash by a sol-gel method as a green biosource (ZN), chitosan as a cationic biopolymer (CS), and nanozeolite-Y/chitosan composite (CSZ). An eco-friendly composite that consists of chitosan and nanozeolite-Y was used to combine the advantages of nanoparticles with biopolymers two materials to increase the removal % of methylene blue dye. All the synthetized solid adsorbents were investigated using TGA, nitrogen adsorption, SEM, TEM, FTIR, XRD, and zeta potential. The results showed that CSZ particles had a high specific surface area (432.3 m2/g), mesoporosity (with an average pore diameter of 2.59 nm), a smaller TEM particle size (between 28.6 and 60.7 nm), a lot of chemical functional groups, and high thermal stability. CSZ exhibited the maximum adsorption capacity (141.04 mg/g) towards methylene blue. The adsorption nature of methylene blue onto CS and CSZ is endothermic, spontaneous, and a physical adsorption process, while it is exothermic, nonspontaneous, physical adsorption process in the case of ZN, as confirmed by thermodynamic results. Pseudo-second order, Elovich, Dubinin-Radushkevich, Freundlich, Langmuir, Temkin, and adsorption models all fit the MB adsorption well, with correlation coefficients reaching about 0.9997. Nitric acid was found to be the best desorbing agent, with a desorption efficiency of about 99%.

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Synthesis of Porphyrin-based MOF/Cloisite-30B nanocomposite for selective dye adsorption: Optimization by Design-Expert, Adsorption, and Kinetic Study

Najafi,

Rahimi,

Bräse

2024

J Inorg Organomet Polym

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Ozonation, electrochemical, and biological methods for the remediation of malachite green dye wastewaters: A mini review

Cited by 15 publications

References 69 publications

Advancements in application of modified biochar as a green and low-cost adsorbent for wastewater remediation from organic dyes

Advancements in application of modified biochar as a green and low-cost adsorbent for wastewater remediation from organic dyes

Fabrication of nanozeolite-Y/chitosan composite based on rice husks for efficient adsorption of methylene blue dye: kinetic and thermodynamic studies

Synthesis of Porphyrin-based MOF/Cloisite-30B nanocomposite for selective dye adsorption: Optimization by Design-Expert, Adsorption, and Kinetic Study

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