Removal of Dye from Aquatic Environments: State-of-the-Art and Future Perspectives

Mojiri, Amin

doi:10.3390/separations9110375

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…The presence of dyes in waterways significantly impacts living organisms. Dyes are extensively utilized across industries at various scales, and untreated wastewater effluents frequently discharge, leading to river and water source contamination [5][6][7][8]. To address this pollution, techniques including oxidation, flocculation, coagulation, and absorption have been implemented to remove dyes from water [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Removal of Malachite Green by Poly(acrylamide-co-acrylic acid) Hydrogels: Analysis of Coulombic and Hydrogen Bond Donor–Acceptor Interactions

Hamri,

Bouzi,

Lerari

et al. 2023

Gels

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Water pollution caused by dyes poses a significant threat to life on earth. Poly(acrylamide-co-acrylic acid) hydrogels are widely used to treat wastewater from various pollutants. This study aims to examine the removal of malachite green (MG), a harmful and persistent dye that could cause extensive environmental damage, from an aqueous solution by adjusting the initial concentration of acrylamide (AM) and the degree of copolymer crosslinking. The copolymer hydrogels efficiently eliminate MG in a brief timeframe. The most successful hydrogel accomplished a removal rate exceeding 96%. The copolymer of 4 wt % 1,6-hexanediol diacrylate and a concentration of 100 mg/mL AM was effective. The degree of swelling was affected by crosslinking density as expected, with low crosslinking ratios resulting in significant swelling and high ratios resulting in less swelling. To evaluate the results, a docking approach was used which presented three crosslinked models: low, medium, and high. The copolymer–dye hydrogel system displayed robust hydrogen bonding interactions, as confirmed by the high quantities of both donors and acceptors. It was determined that MG contains six rotatable bonds, enabling it to adapt and interact with the copolymer chains. The dye and copolymer enhance H-bond formation by providing two hydrogen bond donors and 16 hydrogen bond acceptors, respectively. Through capitalizing on cationic and anionic effects, the ionic MG/copolymer hydrogel system improves retention efficiency by enhancing attraction between opposing charges. It is interesting to note that the synthesized copolymer is able to remove 96.4% of MG from aqueous media within one hour of contact time.

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Section: Introductionmentioning

confidence: 99%

Removal of Malachite Green by Poly(acrylamide-co-acrylic acid) Hydrogels: Analysis of Coulombic and Hydrogen Bond Donor–Acceptor Interactions

Hamri,

Bouzi,

Lerari

et al. 2023

Gels

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Decentralization of Household Wastewater Streams: Challenges and Perspectives

Giwa,

Alepu

et al. 2024

Collect J Environ Sci

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Decentralized household wastewater treatment systems are gaining increasing attention as a sustainable alternative to centralized systems for managing household wastewater streams which includes the grey, black and storm water, particularly in developing countries and rural areas. Decentralized household wastewater treatment systems offer several advantages, including reduced infrastructure costs, lower environmental impact, improved local water quality, and increased adaptability to site-specific conditions. However, the widespread adoption and long-term sustainability of household wastewater treatment systems face various challenges. This review paper examines the key challenges and perspectives in the household wastewater streams. The main challenges identified include lack of awareness and education among stakeholders, institutional and regulatory barriers, financial constraints, limited technology options, and socio-cultural acceptance. The review also explores the perspectives for overcoming these challenges, such as enhancing education and awareness programs, developing standardized designs and guidelines, establishing sustainable financing mechanisms, and promoting sustainable and circular solutions, and appropriate technology development. By addressing these challenges and leveraging the opportunities, Decentralized household wastewater treatment systems can play a crucial role in improving sanitation, reducing environmental degradation, and supporting sustainable water management in diverse settings.

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Removal of Dye from Aquatic Environments: State-of-the-Art and Future Perspectives

Abstract: Surface water sources play a vital role in numerous aspects of societal demand, including as sources of drinking water and water used for agricultural and industrial purposes [...]

Cited by 2 publications

References 21 publications

Removal of Malachite Green by Poly(acrylamide-co-acrylic acid) Hydrogels: Analysis of Coulombic and Hydrogen Bond Donor–Acceptor Interactions

Removal of Malachite Green by Poly(acrylamide-co-acrylic acid) Hydrogels: Analysis of Coulombic and Hydrogen Bond Donor–Acceptor Interactions

Decentralization of Household Wastewater Streams: Challenges and Perspectives

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