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Next-generation biochar adsorbents from waste biomass: functionalization strategies and real-world water treatment applications 认领 引用
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作者 Mohssine Ghazoui Otmane Boudouch +4 位作者 Rajaa Zahnoune Aboubacar Sidigh Sylla Safa Aharrouy Siham Dabali Reda Elkacmi 《ENGINEERING Environment》 SCIE EI CAS CSCD 2026年第1期177-203,共27页
Biochar has emerged as a sustainable and cost-effective adsorbent for the removal of emerging contaminants from wastewater. This review critically explores recent advances in the design and application of engineered b... Biochar has emerged as a sustainable and cost-effective adsorbent for the removal of emerging contaminants from wastewater. This review critically explores recent advances in the design and application of engineered biochars derived from diverse waste biomasses, focusing on the link between structural modifications and pollutant-specific removal mechanisms. Functionalization strategies including physical and chemical activation, heteroatom doping, surface grafting, and hybrid composite formation are systematically analyzed for their impact on adsorption efficiency and selectivity toward dyes, heavy metals, pharmaceuticals, and per- and polyfluoroalkyl substances. Particular attention is paid to performance in column systems, regeneration potential, and behaviour in complex real-world matrices, which remain underexplored in current literature. The diversity of adsorption mechanisms such as electrostatic interactions, π–π stacking, hydrogen bonding, ion exchange, and surface complexation is discussed in relation to surface chemistry and pollutant type. Despite promising results, critical challenges persist, including biochar heterogeneity, lack of standard production protocols, potential leaching of dopants, and limitations in large-scale implementation. This review highlights the need for unified assessment frameworks, life cycle analyses, and integration strategies aligned with circular economy principles. By bridging the gap between laboratory innovation and field-scale application, this work provides a comprehensive roadmap for researchers, engineers, and stakeholders seeking to deploy next-generation biochar-based sorbents in sustainable water treatment systems. 展开更多
关键词 Biochar Waste biomass valorization Surface functionalization Adsorption mechanisms Emerging contaminants Water treatment
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Synergistic electrocoagulation in a self-induced airlift reactor:A leap towards energy-efficient and sustainable tannery wastewater remediation 认领 引用
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作者 Rajaa Zahnoune Otmane Boudouch +3 位作者 Radouane El Amri Abdelfattah El Mahbouby Maryeme Hamdouch Reda Elkacmi 《Water Science and Engineering》 EI CAS CSCD 2026年第2期198-210,共13页
Tannery wastewater is a challenging effluent due to its high concentrations of chromium,total sulfides,and recalcitrant organic compounds.This study presented a novel electrocoagulation(EC)process using a self-induced... Tannery wastewater is a challenging effluent due to its high concentrations of chromium,total sulfides,and recalcitrant organic compounds.This study presented a novel electrocoagulation(EC)process using a self-induced external-loop airlift reactor(ELAR),which operated without mechanical mixing and relied on hydrogen and oxygen microbubbles for internal circulation.Under optimal conditions(pH of 6,a current density of 50 mA/cm2,an electrolysis time of 20 min),the ELAR achieved high pollutant removal efficiencies(88%chemical oxygen demand(COD)removal and 92%Cr removal)with lower energy consumption(10.8 kW·h/m3)and reduced operational costs(1.83 USD per cubic meter)compared to a stirred tank reactor.Artificial neural network(ANN)modeling enabled data-driven optimization,further improving COD removal to 94%with reducing energy input.Kinetic and isotherm analyses confirmed chemisorption as the dominant mechanism.Life cycle assessment(LCA)and solar integration scenarios highlighted the environmental benefits of the ELAR system.Sludge characterization indicated potential for reuse as construction materials.This study uniquely introduced an ELAR system that operates without mechanical agitation,combined with ANN modeling and LCA,representing the first integrated approach for optimizing and assessing EC performance in tannery wastewater treatment.These findings demonstrate that the ELAR system offers a cost-effective and sustainable solution for industrial wastewater remediation. 展开更多
关键词 Tannery wastewater Electrocoagulation Airlift reactor Stirred tank reactor Sustainable wastewater treatment
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Engineering particulate architectures for hybrid energy storage:Bridging the gap between intercalation capacity and adsorption kinetics 认领 引用
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作者 Mohssine Ghazoui Otmane Boudouch +3 位作者 Aboubacar Sidigh Sylla Kaoutar Moulakhnif Siham Dabali Reda Elkacmi 《Particuology》 SCIE EI CAS CSCD 2026年第2期192-210,共19页
Electrochemical energy storage faces a persistent trade-off:batteries deliver high energy densities via ion intercalation but remain kinetically limited,whereas supercapacitors provide ultrafast power and outstanding ... Electrochemical energy storage faces a persistent trade-off:batteries deliver high energy densities via ion intercalation but remain kinetically limited,whereas supercapacitors provide ultrafast power and outstanding durability through interfacial adsorption but suffer from low energy densities.This dichotomy has become a bottleneck for electric mobility,renewable grid stabilization,and portable electronics.This review introduces a unifying paradigm in which absorption acts as a capacity provider and adsorption as a speed enabler.We critically examine the fundamentals of both mechanisms and survey state-of-the-art materials,from graphite,transition-metal oxides,and phosphates to bio-derived carbons,graphene,MOFs,COFs,and emerging sodium-ion and solid-state systems.Particular emphasis is placed on hybrid devices such as lithium-ion capacitors and hybrid supercapacitors,which already achieve 30–70 Wh kg−1with multi-kW kg−1power output and lifetimes exceeding 20,000 cycles.Looking ahead,disruptive directions include solid-state architectures,bio-inspired electrodes,ultra-fast charging infrastructures(>500 kW),and circular-economy strategies.By reconciling autonomy and speed,the absorption–adsorption paradigm charts a roadmap for next-generation storage systems,capable of supporting the 2030–2040 transition to a resilient,electrified,low-carbon society. 展开更多
关键词 Electrochemical energy storage Ion intercalation Interfacial adsorption Hybrid devices Ultra-fast charging Circular economy
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