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Item type:Publication, Access status: with files , Adsorption behavior of lead and chromium onto MgO impregnated biochar derived from banana peels and rice husk in binary environment(Nature Publishing Group, 2026-07-16); ; 9 4 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Adsorption behavior of Selenium oxyanions on granular ferric hydroxide in sources of drinking waterElevated selenium (Se) levels in drinking water pose significant health risks, necessitating effective removal strategies. This study evaluates granular ferric hydroxide (GFH) for Se oxyanion removal under varying water chemistries. GFH showed higher removal efficiency for Se(IV) (99.31 %) than Se(VI) (88.41 %), with minimal iron dissolution, indicating that performance differences arise from distinct Se–GFH interaction mechanisms. Se(IV) adsorption followed pseudo‐first‐order kinetics and the Langmuir isotherm, whereas Se(VI) was better described by pseudo‐second‐order kinetics and the Freundlich model. Sulfate and silicate exhibited a stronger inhibitory effect on Se(VI) removal than on Se(IV), highlighting challenges in treating selenate‐contaminated waters. These findings improve understanding of Se oxyanion adsorption on GFH and support its application in drinking water treatment.Publicationtype: Journal Article5 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Machine learning-driven optimization of biochar-based supercapacitors for sustainable energy storage: mechanisms, trends, and perspectives(Elsevier, 2026-03-31); ; ; ; Haider, SalmanGlobal transition toward sustainable and efficient energy storage has intensified research into supercapacitors, valued for their rapid charge-discharge capability, high power density, and long operational lifespan. Among carbonaceous materials, biomass-derived biochar has emerged as a low-cost, renewable, and structurally tunable precursor for electrode design. This review provides a structured and critical synthesis of biochar-based supercapacitor strategies, systematically categorizing heteroatom doping, nanocomposite engineering, and hybrid architecture within an integrated electrochemical performance framework. Unlike existing literature that predominantly summarizes modification approaches, this review emphasizes cross-study comparability, mechanistic attribution, and device-level relevance to clarify transferable design principles. A consolidated analysis of recent machine learning (ML) applications reveals a paradigm shift from empirical optimization to data-driven predictive design. Benchmarking against reported datasets, descriptors, and model architectures, we confirm that tree-based ensemble and neural-network models (e.g., XGBoost, LightGBM, ANN) consistently achieve high predictive accuracy (R² > 0.9), while also identifying current limitations in data standardization and descriptor harmonization. The review critically evaluates how ML can move beyond correlation towards interpretable and transferable optimization under realistic device constraints.Finally, a converging research roadmap is proposed, prioritizing standardized reporting, device-level benchmarking, and constraint-aware ML integration to accelerate scalable implementation. By integrating materials engineering, data-driven modeling, and practical deployment considerations, this review establishes a comprehensive framework for advancing sustainable biochar-based supercapacitors toward real-world energy storage applications.Publicationtype: Review Article31 20 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Impact of mixing duration on growth and nutrient removal efficiency of scenedesmus sp. in a novel raceway pond system(Springer, 2026); ; Ullah, NadeemRaceway ponds are regarded as a popular and cost-effective method for microalgae cultivation; however, their performance is strongly influenced by hydrodynamic conditions. Conventional paddlewheel driven systems are restricted to low operating velocities to avoid culture spilling out which often leads to reduced mixing and stagnant zone formation. In this study, a raceway pond was designed with the inclusion of curved slits at the bent zones and submersible pump as an alternative mixing device to prevent culture overflow, improve flow stability and minimize dead zones. This novel integration of structural modifications and pump-based mixing represents a significant advancement over traditional paddlewheel systems by providing higher velocities, enhanced circulation and more uniform algal growth conditions. Experiments were conducted to evaluate the effect of mixing durations in 6 L raceway ponds under identical environmental conditions. The raceway systems permitted a broader velocity range (0.10–0.45 m s⁻¹) without spillage. The system with continuous 24 h mixing compared to 20 and 16 h mixing resulted in the highest biomass productivity of 1.01 g L⁻¹ d⁻¹ and maximum nutrient removal rates of 5.18 mg L⁻¹ d⁻¹ and 3.41 mg L⁻¹ d⁻¹ for NO₃⁻ and PO₄³⁻, respectively. Submersible-pump configured open raceway pond achieved comparable or higher biomass yield, lower energy consumption with a net energy efficiency of 62%, demonstrating its practicality and cost-effectiveness as a viable alternative to conventional paddlewheel driven systems for large-scale Scenedesmus sp. cultivation.Publicationtype: Journal Article30 13 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Recent progress in Selenium remediation from aqueous systems: state-of-the-art technologies, challenges, and prospects(Multidisciplinary Digital Publishing Institute (MDPI), 2025-07-28); ; ; ; The contamination of drinking water sources with selenium (Se) oxyanions, including selenite (Se(IV)) and selenate (Se(VI)), contains serious health hazards with an oral intake exceeding 400 μg/day and therefore requires urgent attention. Various natural and anthropogenic sources are responsible for high Se concentrations in aquatic environments. In addition, the chemical behavior and speciation of selenium can vary noticeably depending on the origin of the source water. The Se(VI) oxyanion is more soluble and therefore more abundant in surface water. Se levels in contaminated waters often exceed 50 μg/L and may reach several hundred μg/L, well above drinking water limits set by the World Health Organization (40 μg/L) and Germany (10 μg/L), as well as typical industrial discharge limits (5–10 μg/L). Overall, Se is difficult to remove using conventionally available physical, chemical, and biological treatment technologies. The recent literature has therefore highlighted promising advancements in Se removal using emerging technologies. These include advanced physical separation methods such as membrane-based treatment systems and engineered nanomaterials for selective Se decontamination. Additionally, other integrated approaches incorporating photocatalysis coupled adsorption processes, and bioelectrochemical systems have also demonstrated high efficiency in redox transformation and capturing of Se from contaminated water bodies. These innovative strategies may offer enhanced selectivity, removal, and recovery potential for Se-containing species. Here, a current review outlines the sources, distribution, and chemical behavior of Se in natural waters, along with its toxicity and associated health risks. It also provides a broad and multi-perspective assessment of conventional as well as emerging physical, chemical, and biological approaches for Se removal and/or recovery with further prospects for integrated and sustainable strategies.Publicationtype: Review Article30 14 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Highly efficient phosphate extraction from water using bio-composites of nano zero valent iron supported on orange peel powder (nZVI@OPP): performance evaluation and mechanistic insights(Springer, 2025-03-29); ; ; 29