Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

Environmental Chemistry Letters, Journal Year: 2023, Volume and Issue: 21(4), P. 2337 - 2398

Published: May 4, 2023

Access to drinkable water is becoming more and challenging due worldwide pollution the cost of treatments. Water wastewater treatment by adsorption on solid materials usually cheap effective in removing contaminants, yet classical adsorbents are not sustainable because they derived from fossil fuels, can induce secondary pollution. Therefore, biological sorbents made modern biomass increasingly studied as promising alternatives. Indeed, such biosorbents utilize waste that would otherwise pollute systems, promote circular economy. Here we review biosorbents, magnetic sorbents, other cost-effective with emphasis preparation methods, types, mechanisms, regeneration spent adsorbents. Biosorbents prepared a wide range materials, including wood, bacteria, algae, herbaceous agricultural waste, animal waste. Commonly removed contaminants comprise dyes, heavy metals, radionuclides, pharmaceuticals, personal care products. Preparation methods include coprecipitation, thermal decomposition, microwave irradiation, chemical reduction, micro-emulsion, arc discharge. Adsorbents be classified into activated carbon, biochar, lignocellulosic clays, zeolites, peat, humic soils. We detail isotherms kinetics. Regeneration supercritical fluid desorption. also discuss exhausted adsorbent management disposal. found agro-waste remove up 68–100% while wooden, herbaceous, bacterial, marine-based 55–99% metals. Animal waste-based 1–99% The average removal efficiency modified around 90–95%, but some treatments, cross-linked beads, may negatively affect their efficiency.

Language: Английский

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Hydrothermal carbonization of food waste for sustainable biofuel production: Advancements, challenges, and future prospects

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 897, P. 165327 - 165327

Published: July 6, 2023

Language: Английский

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Coordination-driven innovations in low-energy catalytic processes: Advancing sustainability in chemical production

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 514, P. 215900 - 215900

Published: May 8, 2024

Catalysis stands as a cornerstone in chemical synthesis, pivotal advancing sustainable manufacturing pathways. The evolution from energy-intensive to catalytic processes has marked transformative shift, notably exemplified by low-energy methods. These processes, operating under milder conditions and emphasizing selectivity recyclability, represent the forefront of chemistry. This review navigates through an array reactions, highlighting their diverse applications culminating exploration recent strides within processes. For example, explores uses such enzyme mimicking, biodiesel production, carbon dioxide capture, organic synthesis. Additionally, it covers enzymatic catalysis photocatalysis for transformations, energy applications, water treatment. Notably, emphasizes capabilities single-atom (SAC) diatomic catalysts (DACs), recognizing exceptional performance catalyzing reactions at minimal activation energies while maintaining high efficiency mild conditions. By elucidating modulation electronic structure offering microelectronic perspective, aims elucidate mechanisms underlying activity SAC DACs. Emphasizing interplay between coordination chemistry principles efficacy, elucidates indispensable role complexes fortifying sustainability these spotlighting fusion with catalysis, this underscore collective influence shaping landscape production.

Language: Английский

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Adsorption and activation, active site and reaction pathway of photocatalytic CO2 reduction: A review

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 481, P. 148754 - 148754

Published: Jan. 14, 2024

Language: Английский

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Advanced adsorbents for ibuprofen removal from aquatic environments: a review

Environmental Chemistry Letters, Journal Year: 2023, Volume and Issue: 22(1), P. 373 - 418

Published: Aug. 25, 2023

Abstract The presence of pharmaceuticals in ecosystems is a major health issue, calling for advanced methods to clean wastewater before effluents reach rivers. Here, we review adsorption remove ibuprofen, with focus on ibuprofen occurrence and toxicity, adsorbents, kinetics, isotherms. Adsorbents include carbon- silica-based materials, metal–organic frameworks, clays, polymers, bioadsorbents. Carbon-based adsorbents allow the highest from 10.8 408 mg/g activated carbon 2.5–1033 biochar. Metal–organic frameworks appear promising due their high surface areas tunable properties morphology. 95% published reports reveal that kinetics follow pseudo-second-order model, indicating predominantly governed by chemical adsorption. 70% disclose Langmuir model describes isotherm, suggesting involves monolayer

Language: Английский

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Heterogeneous catalytic transesterification for biodiesel production: Feedstock properties, catalysts and process parameters

Process Safety and Environmental Protection, Journal Year: 2023, Volume and Issue: 177, P. 844 - 867

Published: July 22, 2023

Language: Английский

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Grey, blue, and green hydrogen: A comprehensive review of production methods and prospects for zero-emission energy

International Journal of Green Energy, Journal Year: 2023, Volume and Issue: 21(6), P. 1383 - 1397

Published: Aug. 4, 2023

ABSTRACTEnergy is the linchpin for economic development despite its generation deficit worldwide. Hydrogen can be used as an alternative energy source to meet requirement that it emits zero near-zero impurities and safe environment humans. Because of growing greenhouse gas emissions fast-expanding usage renewable sources in power production recent years, interest hydrogen resurging. may utilized a storage, stabilizing entire system assisting decarbonization system, particularly industrial transportation sectors. The main goal this study describe several methods producing based on principal utilized. Moreover, financial ecological outcomes three key colors (gray, blue, green) are discussed. Hydrogen's future prosperity heavily reliant technology advancement cost reductions, along with objectives related legislation. This research might improved by developing new methods, novel storage systems, infrastructure, carbon-free generation.KEYWORDS: energyGrey, green hydrogengreenhouse gasecological outcomescarbon-free AcknowledgementsThe authors would like thank Energy Conversion Laboratory at Department Petroleum Mining Engineering Jashore University Science Technology, Jashore, Bangladesh completing review work.Disclosure statementNo potential conflict was reported author(s).Nomenclature ISO=International organization standardization.RES=Renewable sourceHCF=Hydrogen content factorGF=Greenization factorEIF=Environmental impact factorGHG=Greenhouse gasesLCA=Life cycle assessmentHPP=Hydrogen pathwaysCCS=Carbon capture storageSOFC=Solid oxide fuel cellCCS=Carbon sequestration (environmental impact)GWP=Global warming potentialAP=Acidification potentialLCIA=Life assessingLHV=Lower heating valueHHV=Higher valueH2=HydrogenCO2=Carbon dioxideCESAR=Canada systems analysis researchCCUS=Carbon use storageSMR=Steam methane reformingHER=Hydrogen evolution reactionOER=Cathode oxygen reactionTML=Technology maturity levelRES=Renewable sourcesHighlights Grey, blue reviewed energyColor pathways using primary discussedChallenges emission reviewedCost prospects discussedAdditional informationFundingThe work supported Universiti Malaysia Pahang International Publication Grant [Grant No. RDU 213305].

Language: Английский

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S-scheme heterojunction photocatalysts for hydrogen production: Current progress and future prospects

Fuel, Journal Year: 2023, Volume and Issue: 349, P. 128688 - 128688

Published: May 22, 2023

Language: Английский

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High-efficiency removal of organic pollutants, antibiotic resistant bacteria and resistance genes by a photocatalysis-self-Fenton system based on S, K co-doped g-C3N4 nanosheets

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 339, P. 126734 - 126734

Published: Feb. 10, 2024

Language: Английский

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Carbon–neutral hydrogen production by catalytic methane decomposition: a review

Environmental Chemistry Letters, Journal Year: 2024, Volume and Issue: 22(4), P. 1623 - 1663

Published: April 20, 2024

Abstract The global hydrogen demand is projected to increase from 70 million tons in 2019 more than 200 2030. Methane decomposition a promising reaction for H 2 production, coupled with the synthesis of valuable carbon nanomaterials applicable fuel cell technology, transportation fuels, and chemical synthesis. Here, we review catalytic methane decomposition, focus on catalyst development, deactivation, reactivation, regeneration, economics. Catalysts include mono-, bi-, trimetallic compounds carbon-based compounds. Catalyst deactivation induced by coke deposition. Despite remarkable strides research, industrialization remains at an early stage.

Language: Английский

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