A ubiquitous waste as a superior adsorbent for methylene blue removal: Cow-hair biochar

Deleted Journal, Journal Year: 2025, Volume and Issue: 3(1), P. 2109 - 2109

Published: Feb. 14, 2025

The efficient and sustainable removal of organic dyes from wastewater remains a critical environmental challenge. In this study, cow hair, an abundant underutilized agricultural waste, is transformed into biochar through simple pyrolysis process to develop effective eco-friendly adsorbent for methylene blue (MB) dye removal. physicochemical properties the cow-hair biochar, including its surface area, porosity, functional groups, were systematically analyzed understand adsorption performance. Batch experiments conducted under varying conditions pH, initial concentration, contact time, pH evaluate efficiency hair biochar. results revealed that exhibits superior capacity MB, driven by combination electrostatic interactions, π-π stacking, oxygen group interactions. Using R2 as criteria, best-fitting model was Temkin isotherm, indicating monolayer with maximum surpassing many conventional adsorbents, achieving high levels MB 730 mg/g. This study highlights potential converting waste high-performance adsorbent, offering cost-effective solution dye-contaminated treatment. findings pave way innovative valorization strategies contribute advancement green technologies.

Language: Английский

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Optimizing Wastewater Treatment with PVA Gel Beads and Pumice Stones: A Multi-Stage Reactor Approach

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 21, 2025

Wastewater treatment is critical for public health and environmental protection, with materials methods chosen based on wastewater layout, regulations, goals. PVA gel beads, a ingredient, are porous hydrogels 95–98% water content specific gravity of 1.025 ± 0.01, which makes them perfect immobilizing microorganisms needed to undergo pollutant breakdown. beads' high porosity enhances oxygen nutrient permeability, encouraging bacterial growth underneath the decreasing biomass sloughing, creating less extra sludge than older approaches. These may be used in both nitrification denitrification operations, non-biodegradable effective treating variety industrial pollutants. The manufacturing method includes solution, adding crosslinking agent, emulsifying, inducing gelation, filtering beads. To restore function, beads swollen, rinsed, deswelled, crosslinked, dried. have several advantages, including successful mixing due their near-water gravity, reduced generation, compatibility wide range contaminants. However, they do limits, such as low specificity contaminants requirement proper disposal after use. Artificial pumice stones, manufactured from cement, silica sand, aluminium powder, lightweight porous, making useful building filtering. experimental setup this system incorporates attached suspended techniques, lab-scale model using glass sheets transparency. consists an intake tank, aeration unit, bioreactor, sedimentation unit. first research uses biocarrier second reactor, promoting microorganism growth. In trial, stones replaced bioreactor. third bioreactor units, respectively, increase efficiency by moving bed fixed procedures.

Language: Английский

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Candlenut Shell and Clay-Derived Monoliths with Molasses Binder: A Sustainable Approach to Water Dye Decontamination

Jurnal Kimia Sains dan Aplikasi, Journal Year: 2025, Volume and Issue: 28(2), P. 88 - 97

Published: Feb. 27, 2025

This study presents a sustainable approach to water dye decontamination using monoliths constructed from candlenut shells, clay, and molasses as binder. The shells were activated form carbon then mixed with natural clay create the monolith composite. dough was pushed through stainless-steel mold featuring seven circular openings, each measuring 2 cm in width thickness, (MCC MMCC). rigorously tested for adsorption efficiency, isotherm behavior, kinetic properties. Results showed high removal 92% methylene blue 74% methyl orange, which attributed stronger interaction of negatively charged surface monoliths. analysis followed Langmuir model, indicating monolayer on uniform active sites. Kinetic studies linear regression aligned pseudo-second-order that chemical controlling factor rate. Characterization Scanning Electron Microscopy (SEM) revealed porous morphology, while X-ray Diffraction (XRD) identified crystalline structures present. Fourier Transform Infrared Spectroscopy (FTIR) confirmed presence functional groups essential adsorption, Brunauer-Emmett-Teller (BET) determined specific area pore size distribution. In conclusion, this underscores viability shell clay-derived efficient environmentally friendly adsorbents wastewater treatment, providing practical solution pollution.

Language: Английский

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COD and toxicity reduction of wastewater using a hybrid advanced oxidation process of sonication with chitosan-based hydrogel beads

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: 193, P. 158 - 169

Published: Nov. 7, 2024

Language: Английский

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