Iron-loaded carbon black prepared <i>via</i> chemical vapor deposition as an efficient peroxydisulfate activator for the removal of rhodamine B from water

Ahmed, Harez R.; Hama Aziz, Kosar Hikmat; Agha, Nian N. M.; Mustafa, Fryad S.; Hinder, Steven John

doi:10.1039/d3ra04566h

Cited by 16 publications

(1 citation statement)

References 68 publications

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“…The persistence and poor degradability of reactive organic dyes present a significant environmental threat by bypassing conventional wastewater treatment plants and entering ecosystems [ 14 ]. The inherent toxicity, associated with adverse effects like mutagenesis, chromosomal damage, carcinogenicity and respiratory problems, underscores the pressing need for effective strategies to remove dyes from wastewater streams [ 15 , 16 ]. Efforts should be focused on developing effective treatment methods to reduce the environmental impact of dye-containing wastewater.…”

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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Industrial Wastewater Treatment and Methods for Monitoring Treatment Processes Used to Eliminate Persistent Organic Pollutants

Szarka,

Vidová,

Viktoryová

et al. 2024

Lecture Notes in Civil Engineering

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Utilizing sequence transformation of selective copper metal as an efficient heterogeneous Fenton-like catalyst for the degradation of aqueous methylene blue

Ahmed,

Mustafa,

Aziz

et al. 2023

Reac Kinet Mech Cat

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This article elucidates the pivotal role of catalysts in effecting the selective deposition of copper metal onto carbon black extracted from discarded tires via the Chemical Vapor Deposition (CVD) technique. The CVD process involves intricate chemical interactions between gaseous constituents, facilitating the formation of thin coatings on substrate surfaces. This method, noted for generating materials of elevated purity, density, and strength, has gained prominence in diverse sectors including heterogeneous catalysis. Selective Metal by Chemical Vapor Deposition (SMCVD) represents an augmentation approach for fabricating nanomaterials on thermally delicate substrates, leveraging suitable metal catalysts. These catalysts not only facilitate deposition at notably low temperatures but also yield high-purity films. The study presents empirical evidence of proficient synthesis of selective metal heterogeneous catalysts through CVD. Furthermore, the application of SMCVD as an economical means for large-scale production of pristine carbon black from tire waste is delineated. Given the pertinence of curbing organic dye pollution for ecological and human well-being, the article underscores the promise of heterogeneous Fenton oxidation as a remediation technique. This involves the removal of organic pollutants and is reliant on Fenton-like catalysts. The study details the creation of such catalysts (Cu-CB) via the CVD deposition of copper metal onto carbon black derived from discarded tires.The resultant Cu-CB catalyst finds utility as a stimulant for H2O2 in Fenton-like degradation, particularly of aqueous methyl blue (MB), a prototypical organic pollutant, across a broad pH spectrum. Empirical investigations encompassing variables such as pH, Cu-CB concentration, H2O2 dosage, and initial MB concentration were conducted to discern their influence on MB removal. Remarkably, degradation efficiencies of up to 97% were achieved within 30 minutes under near-neutral pH conditions, employing 100 mg/L of H2O2 and 0.075 g/L of Cu-CB.Moreover, the reusability of Cu-CB for multiple cycles, alongside a facile regeneration process devoid of supplementary chemicals, underscores its practical efficacy. The article encompasses a suite of analytical techniques-FESEM, EDS, BET surface analysis, XRD, FTIR, and XPS-to characterize the developed catalyst. A scavenging assay affirms the pivotal role of hydroxyl radicals (•OH) as the chief reactive oxygen species (ROS) responsible for MB degradation. In summation, the study presents an innovative catalyst design strategy, exemplified by the heterogeneous Cu-CB/H2O2 system, with promising implications for organic dye wastewater treatment.

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Iron-loaded carbon black prepared via chemical vapor deposition as an efficient peroxydisulfate activator for the removal of rhodamine B from water

Abstract: Fe-CB was synthesized via CVD from tire wastes and used for the degradation and mineralization of RhB by persulfate based advanced oxidation processes.

Cited by 16 publications

References 68 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

Industrial Wastewater Treatment and Methods for Monitoring Treatment Processes Used to Eliminate Persistent Organic Pollutants

Utilizing sequence transformation of selective copper metal as an efficient heterogeneous Fenton-like catalyst for the degradation of aqueous methylene blue

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