Water contamination due to hexavalent chromium and its health impacts: exploring green technology for Cr (VI) remediation

Green Chemistry Letters and Reviews, Journal Year: 2024, Volume and Issue: 17(1)

Published: June 26, 2024

Cr (VI) compounds find wide uses in the industrial sector, such as wood preservation, tanning, chrome plating, and anticorrosive agents. Several kinds of both natural factors can lead to contamination wastewater. Human exposure hazardous metal ion a variety health problems. The undergoes transition into lower oxidation state once it enters cell, causing oxidative stress harming organelles. Not only do sugar-phosphate backbones, histones, base pairing DNA suffer from induced genotoxicity, but chromosomes are also impacted. Because is more compared other metals, needs be removed water It feasible remove using physiochemical methods, they expensive produce sludge. Therefore, there an urgent need for economical eco-friendly removal technique. Biological techniques including biosorption, bioreduction, bioaccumulation regarded environmentally beneficial techniques. sources (VI), toxicity, green technology were authors' main points emphasis this review.

Language: Английский

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Cationic dialdehyde cellulose microfibers for efficient removal of eriochrome black T from aqueous solution

Bioresource Technology, Journal Year: 2023, Volume and Issue: 380, P. 129096 - 129096

Published: April 24, 2023

Language: Английский

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Chromium removal from aqueous solutions via spontaneous adsorption using hybrid nanocomposites based on zinc-magnesium ferrite spinel anchored in polypyrrole

Emergent Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 25, 2025

Language: Английский

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Pumice modified with didodecyldimethylammonium bromide as a cost-effective, eco-friendly adsorbent for Cr(VI)

International Journal of Environmental & Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 25

Published: April 7, 2025

Language: Английский

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Emerging trends and future outlook on chromium removal in the lab, pilot scale, and industrial wastewater system: an updated review exploring 10 years of research

Environmental Monitoring and Assessment, Journal Year: 2025, Volume and Issue: 197(5)

Published: April 14, 2025

Language: Английский

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Source of Cr(VI) in the aquatic ecosystem, its genotoxic effects and microbial removal from contaminated water

Green Chemistry Letters and Reviews, Journal Year: 2023, Volume and Issue: 16(1)

Published: Jan. 2, 2023

Cr(VI) compounds have important industrial applications and are used in various sectors like tanning, chrome plating, anti-corrosion agents wood preservation. The contamination the wastewater is generally due to several natural anthropogenic sources. Anthropogenic activities operations play a major role aquatic ecosystem. well-known toxic metal ion its exposure humans causes health issues. enters cells gradually reduces into lower oxidation state generates oxidative stress cell which damages organelles. mediated genotoxicity has been described as damaging DNA base pairing, sugar-phosphate backbone, histone modification chromosomal damage. Water must be treated remove high toxicity. There several, physiochemical methods for remediation but these approaches expensive produce hazardous sludge during treatment process. Therefore, suitable environmentally friendly effective removal approach urgently needed. Microbial of considered an eco-friendly cost-effective In this, authors focused on sources, microbial Cr(VI).

Language: Английский

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Sequestration of chromium by Ananas comosus extract–coated nanotubes: synthesis, characterization, optimization, thermodynamics, kinetics, and antioxidant activities

Biomass Conversion and Biorefinery, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 23, 2024

Abstract Herein, a superior adsorbent was fabricated via immobilizing Ananas comosus juice extract on nanotubes (MWPJ) for the removal of chromium (VI) from simulated wastewater. The batch adsorption technique used to establish influence solution pH, dosage, temperature, initial Cr(VI) concentration, and contact time (VI). To comprehend surface properties confirm onto MWPJ MWCNTs, TGA, SEM, FTIR analyses were performed MWCNTs before after process. These spectroscopic techniques revealed temperature characteristics responsible effectiveness MWPJ. demonstrated optimum potential at pH 2, 0.05 g 180 min time. had maximum 44.87 33.38 mg −1 25 °C respectively. reaction rate kinetics data fitted well with Elovich pseudo-first-order kinetic model, respectively, while saturated equilibrium best described by Freundlich isotherm. thermodynamics analysis that uptake spontaneous exothermic After five adsorption–desorption cycles MWPJ, about 80% efficiency ions sustained. Hence, has capacity practical applications in environmental remediation practice.

Language: Английский

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Two-dimensional MXene and molybdenum disulphide for the removal of hexavalent chromium from water: A comparative study

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 320, P. 100693 - 100693

Published: Aug. 8, 2024

Chromium is a carcinogenic heavy metal that accumulates in plant and animal bodies. New materials for efficient removal of chromium from water bodies are high demand. MXene was synthesized MAX phase by using ammonium fluoride as an etching agent while molybdenum disulphide hydrothermal method. The pseudo-second order kinetic model described the adsorption hexavalent on whereas Freundlich Isotherm best fitted Mxene, Langmuir more suitable case disulphide. capacity obtained 59.8 mg/g (At Dosage = 1 g/L, T 298 K, Time 9 h, pH 2, Co 30 mg/L) 113.7 0.5 1.5 mg/L). Thermodynamic investigations showed process endothermic spontaneous. coexisting ions decrease percentage up to 70 % 79 disulphide, respectively, after fifth cycle. It can be inferred these developed have advantages simplicity reducing pollution.

Language: Английский

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Ni(II) and Pb(II) Removal Using Bacterial Cellulose Membranes

Polymers, Journal Year: 2023, Volume and Issue: 15(18), P. 3684 - 3684

Published: Sept. 7, 2023

Bacterial cellulose (BC) is a highly crystalline nanosized material with high number of active groups. This study focuses on the synthesis BC membranes through fermentation, their characterization and application to remove Ni(II) Pb(II) from wastewater by adsorption under different conditions. Four-day-grown form three-dimensional nanofibril networks pH 6.3 cationic demand (52.5 μeq·g-1). The pseudo-second-order kinetic model Sips isotherm best describe both metals. intraparticle diffusion revealed three-step mechanism adsorption-plateau-adsorption, while followed typical reducing-slope trend up saturation. highest removal was obtained at 4 dosage 400 mg·L-1. maximum capacities were 28.18 mg·g-1 8.49 for Pb(II), respectively, involving total coverage sites. Thermodynamically, exothermic, endothermic. values sorption heat, activation Gibbs' energy depicted physisorption process. ruled crystallization metals adsorbed groups, driven process, as shown TEM images spent material.

Language: Английский

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Cr(VI) removal from fiber cement process waters: a techno-economic assessment

Journal of Water Process Engineering, Journal Year: 2023, Volume and Issue: 57, P. 104594 - 104594

Published: Nov. 25, 2023

Language: Английский

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