Surface Modification of Biochar for Dye Removal from Wastewater

Catalysts, Journal Year: 2022, Volume and Issue: 12(8), P. 817 - 817

Published: July 26, 2022

Nowadays, biochar is being studied to a great degree because of its potential for carbon sequestration, soil improvement, climate change mitigation, catalysis, wastewater treatment, energy storage, and waste management. The present review emphasizes on the utilization biochar-based nanocomposites play key role in decontaminating dyes from wastewater. Numerous trials are underway synthesize functionalized, surface engineered that can sufficiently remove dye-contaminated removal via natural modified follows numerous mechanisms such as precipitation, complexation, ion exchange, cation–π interactions, electrostatic attraction. Further, production modification promote good adsorption capacity dye owing properties tailored stage linked with specific hydrophobic interactions. Meanwhile, framework artificial neural networking machine learning model efficiency proposed even though studies still their infancy stage. article recommends smart technologies modelling forecasting should be included proper applications.

Language: Английский

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Efficient removal of noxious methylene blue and crystal violet dyes at neutral conditions by reusable montmorillonite/NiFe2O4@amine-functionalized chitosan composite

Scientific Reports, Journal Year: 2022, Volume and Issue: 12(1)

Published: Sept. 15, 2022

Abstract The jeopardy of the synthetic dyes effluents on human health and environment has swiftly aggravated, threatening survival. Hence, sustained studies have figured out most acceptable way to eliminate this poisonous contaminant. Thereby, our investigation aimed fabricate montmorillonite/magnetic NiFe 2 O 4 @amine-functionalized chitosan (MMT-mAmCs) composite as a promising green adsorbent remove cationic methylene blue (MB) crystal violet (CV) from wastewater in neutral conditions. Interestingly, MMT-mAmCs carries high negative charges at wide pH range 11 clarified zeta potential measurements, asserting its suitability adsorb contaminants. In addition, experimental study confirmed that optimum both MB CV was 7, inferring ability simple process Furthermore, ferromagnetic behavior is additional merit provides facile, fast, flawless separation. Notably, as-fabricated revealed an auspicious adsorbability towards adsorptive removal CV, since maximum adsorption capacity were 137 118 mg/g, respectively. Moreover, isotherm kinetic investigatins depicted fitted Langmuir Pseudo 2nd order models, Besides, advanced preserved satisfactory characteristics with maximal efficacy exceeding 87% after reuse for ten consecutive cycles. More importantly, efficiently adsorbed real agricultural water, Nile river water samples medium, reflecting potentiality be superb reusable candidate pollutants their aquatic media.

Language: Английский

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Isothermal and kinetic screening of methyl red and methyl orange dyes adsorption from water by Delonix regia biochar-sulfur oxide (DRB-SO)

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: June 12, 2024

Abstract In this study, Delonix regia seed pods (DRSPs) as a locally available material were refluxed in 90% H 2 SO 4 to yield novel D. biochar-sulfur oxide (DRB-SO). FTIR, BET, BJH, SEM, EDX, XRD, DSC and TGA applied investigate the characterizations of prepared DRB-SO. Various adsorption parameters like pH effect, dye concentration adsorbent dose, reaction time isotherm kinetic study carried out explain process methyl orange (MO) red (MR) onto Langmuir's model perfectly explained surface DRB-SO monolayer. The maximum efficiency was (98%) (99.6%) for MO MR respectively which attained after 150 min with an dose 0.75 g/L. pseudo-second-order best dyes by highest observed amount high 144.9 mg/g 285.7 dye, comparable other reported materials based on activated carbon materials. All outcomes signposted prodigious perspective fabricated biochar composite wastewater treatment. Using regenerating through acid–base regeneration process, six cycles adsorption/desorption examined. Over course cycles, there minor decrease desorption processes. Also, it revealed what most plausible mechanism absorb ions dyes.

Language: Английский

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Microwave-induced degradation of Congo red dye in the presence of 2D Ti3C2Tx MXene as a catalyst

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 3, 2025

In this research, the degradation of Congo red (CR) dye, as an organic pollutant in water, was investigated using microwave-induced reaction technology. This technology requires a microwave-absorbing catalyst and 2D Ti

Language: Английский

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Synthesis, Characterization and Sorption Properties of Biochar, Chitosan and ZnO-Based Binary Composites towards a Cationic Dye

Sustainability, Journal Year: 2022, Volume and Issue: 14(21), P. 14571 - 14571

Published: Nov. 5, 2022

Industrial effluents contaminated with different types of organic dyes have become a major concern to environmentalists due the carcinogenic nature dyes, which are harmful human and aquatic life. In recent years, treatment by natural resources has been proposed as most sustainable solution for this problem. work, Moringa oleifera (M. oleifera) seed-derived biochar composites, e.g., Biochar-Chitosan (BC), Biochar-ZnO (BZ), Chitosan-ZnO (CZ) were produced characterized. The synthesized materials then utilized adsorb cationic dye, methylene blue. Spectroscopic analysis biochar-based composites revealed that modification chitosan ZnO introduced functional active groups in surface. Pore development structure nanocomposites was visible surface morphological images. derived fully amorphous increased crystallinity modification. obtained area varied from 0.90 ± 0.00 14.48 1.13 m2 g−1 prepared sorbents, where BZ corresponds highest BC lowest area, respectively. basic pH (9) favorable condition sorption. sorption reached equilibrium at 90 min. Isotherm favorability Langmuir model over Freundlich Temkin models. capacity (~170 mg/g) found BC. showed 75% increase 16% decrease removal modification, Response methodology (RSM) optimization similar results analytical experiments. characterization experimental prefigure chemical functionalities critical parameter adsorption process.

Language: Английский

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Adsorption of direct blue 106 dye using zinc oxide nanoparticles prepared via green synthesis technique

Environmental Science and Pollution Research, Journal Year: 2023, Volume and Issue: 30(26), P. 69666 - 69682

Published: May 4, 2023

Zinc oxide nanoparticles (ZnO-NPs) have in recent times shown effective adsorption capability for the confiscation of colour contaminants from aqueous environments (aquatic ecosystems or water bodies) due to fact that ZnO contains more functional groups. Direct blue 106 (DB106) dye was selected this present study as a model composite its wide range uses textiles (cotton and wools), woods, paper industries, well their therapeutic applications, along with potential impairments. This therefore focuses on use DB106 applications Furthermore, surface functionalization, shape, pore size were revealed by TEM, FTIR, UV, BET techniques. The current green synthesis method prepare ZnO-NPs an adsorbent molecules under various conditions using batch process. biosorbent detected be pH-dependent, optimal (anionic) particles observed at pH 7. synthesized distinct means linearized Langmuir (LNR) pseudo-second-order (SO) models, estimated maximum capacity (Qm) 370.37 mg/g.

Language: Английский

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Isotherm and kinetic investigations of sawdust-based biochar modified by ammonia to remove methylene blue from water

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: Aug. 5, 2023

Abstract Chemical industry effluent may pose significant environmental risks to both human health and the economy if it is not properly managed. As a result, scientists decision-makers are paying increasing attention developing sustainable, low-cost wastewater treatment technique. This work aims investigate adsorption of Methylene Blue (MB) dye present in water using biochar derived from sawdust modified by boiling an ammonia solution (SDBA). The properties SDBA were characterized BET, SEM, XRD, BJH, FT-IR, DTA, EDX TGA analyses. presence –OH –NH groups was confirmed FTIR, which proved that NH 4 OH successfully added nitrogen on its surface. influence pH (2 12), MB initial concentration (20 120 mg/L), adsorbent dosage (0.5 4.0 g/L) contact time (0 180 min) process has been investigated. more favorable at basic pH, with optimum 8. Using starting 20 mg/L g/L dose, maximum percent clearance 99.94%. Experimental results fitted Freundlich (FIM), Tempkin (TIM) Langmuir (LIM) isotherm models (IMs). FIM equilibrium data well, 643.74 mg/g Q m . Various error function used test obtained IMs. According Error Function results, experimental showed fits better for LIM FIM. Kinetic studies indicated procedure followed pseudo-second-order (PSOM) kinetics based film diffusion (FDM), pseudo-first-order (PFOM) intra-particle (IPDM). sorption involved electrostatic interaction, surface participation, hydrogen bond π–π interactions. mechanism proposed as physical via attraction process. effective removing water. Six adsorption–desorption cycles run through regeneration only minimal amount capacity loss, demonstrating reusability manufactured SDBA.

Language: Английский

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Biosorption of Methylene blue using clove leaves waste modified with sodium hydroxide

Results in Chemistry, Journal Year: 2023, Volume and Issue: 5, P. 100778 - 100778

Published: Jan. 1, 2023

Water pollution with carbon-based dyes is a critical environmental problem owing to the severe life-threatening issues associated their ingestion by humans and release of dye molecules into ecosystem. Before being released environment, number techniques technologies have been researched remove other harmful compounds from textile industrial effluents. Currently, scientists are looking at efficacy new, low-cost, biodegradable biomaterials for removing noxious pollutants like methylene blue (MB) water bodies In this study, clove leaves (CL) activated sodium hydroxide (NaOH) were employed as bio-sorbent confiscation MB. The produced CL-NaOH was typified employing Scanning Electron Microscopy (SEM) Fourier Transform Infrared Spectroscopy (FTIR) ascertain physiochemical properties bio-sorbent. response surface methodology (RSM) create mathematical model optimize biosorption process MB removal using CL-bio-sorbents NaOH. Analysis variance (ANOVA) showed relative significance parameters in confiscation. perfectly defined utilizing Freundlich (FRH), Langmuir (LNR) pseudo-first-order (PFO) models. established capacity approximately 9.80 mg.g−1. Also, calculated thermodynamics revealed that non-spontaneous endothermic, involving chemical sorption high energy. Conclusively, study reveals cost-efficient recyclable sequestration water-soluble solutions.

Language: Английский

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Fabrication of date palm kernel biochar-sulfur (DPKB-S) for super adsorption of methylene blue dye from water

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: March 21, 2024

Abstract A novel form of biochar was created by dehydration Date palm kernel with 85% sulfuric acid. It examined how the newly produced (DPKB-S) affected aqueous solution's capacity to extract Methylene Blue (MB) dye. The prepared DPKB-S categorized BET, BJH, FT-IR, SEM, EDX, DSC, and TGA analyses. ideal pH for MB dye adsorption is 8. With 0.75 g L −1 an initial concentration 50 ppm dye, Palm Kernel Biochar-Sulfur had highest removal percentage 100%. Langmuir Freundlich isotherm models were used investigate collected data. model that best covers in at low concentrations (0.75–1.25 ) high (1.5–1.75 ). maximum ( Q m 1512.30 mg . Furthermore, a variety error function applied derived data, including Marquardt’s percent standard deviation (MPSD), sum absolute errors (EABS), squared (ERRSQ), root mean square (RMS), Chi-square (X 2 ), average relative (ARE), (APE), hybrid (HYBRID). Kinetic data calculated intraparticle diffusion (IPD), pseudo-second-order (PSO), pseudo-first-order (PFO), film (FD) models. PSO rate strong correlation R = 1.00) largely regulated rate. mechanism based on principle these positively charged dyes are attracted electrostatic attraction forces due growth number negatively regions basic value. According results, shows promise as affordable competent adsorbent can be frequently without experiencing discernible decrease efficiency.

Language: Английский

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LIGNOCELLULOSIC BIOMASS FOR BIOCHAR PRODUCTION: A GREEN INITIATIVE ON BIOWASTE CONVERSION FOR PHARMACEUTICAL AND OTHER EMERGING POLLUTANT REMOVAL

Chemosphere, Journal Year: 2024, Volume and Issue: 360, P. 142312 - 142312

Published: May 16, 2024

Language: Английский

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