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61,005 resultsShowing papers similar to Valorization of coconut husk into biochar for lead (Pb 2+ ) adsorption
ClearAdsorption of Lead from Aqueous Solution by Biochar: A Review
This review summarizes research on using biochar, a low-cost carbon material, to adsorb and remove lead from contaminated water. The study covers how different raw materials and modification methods affect biochar's adsorption capacity, along with the main mechanisms by which lead is removed from aqueous solutions.
Pb(II) adsorption by biochar from co-pyrolysis of corn stalks and alkali-fused fly ash
Researchers created a modified biochar — a charcoal-like material made from plant waste — by combining corn stalks with fly ash during heating, and found it absorbed lead from water about 6% more effectively than standard biochar. The added binding sites from the fly ash modification make this a promising low-cost material for removing heavy metal pollution from contaminated water.
Evaluation of Efficient Pb Removal from Aqueous Solutions using Biochar Beads
Researchers developed alginate-biochar bead composites to improve the removal of lead from water compared to powdered biochar alone. The beads were easier to separate from solution and maintained high removal efficiency. This approach could make biochar-based heavy metal remediation more practical for real-world water treatment applications.
Effect of CeO2-Reinforcement on Pb Absorption by Coconut Coir-Derived Magnetic Biochar
Researchers prepared cerium oxide-doped magnetic biochar from coconut coir and found it significantly outperformed undoped magnetic biochar for removing lead from contaminated wastewater, with the CeO2 reinforcement providing additional adsorption sites that improved heavy metal uptake.
Functionalized Biochars for Enhanced Removal of Heavy Metals from Aqueous Solutions: Mechanism and Future Industrial Prospects
This review examined functionalized biochar materials as adsorbents for removing heavy metals from water, comparing surface modification strategies that enhance metal uptake capacity and selectivity. Functionalized biochars showed substantially improved adsorption performance over unmodified biochar and low-cost conventional materials.
Sequestration of Lead Ion in Aqueous Solution onto Chemically Pretreated Pycnanthus angolensis Seed Husk: Implications for Wastewater Treatment
Chemically pretreated Pycnanthus angolensis seed husk was evaluated as a low-cost biosorbent for lead removal from contaminated water, with characterization of the activated material and optimization of adsorption conditions demonstrating effective Pb(II) sequestration.
The Adsorption of Pb(II) from Aqueous Solution Using KOH-Modified Banana Peel Hydrothermal Carbon: Adsorption Properties and Mechanistic Studies
Researchers modified banana peel-derived hydrothermal carbon with potassium hydroxide to create an adsorbent material for removing lead ions from water. The study achieved an adsorption capacity of about 43 mg/g and an 86% removal rate under optimized conditions, suggesting that agricultural waste like banana peels can be converted into effective and low-cost materials for heavy metal remediation in contaminated water.
Advances in the Study of Heavy Metal Adsorption from Water and Soil by Modified Biochar
This review analyzes different methods for modifying biochar to improve its capacity to adsorb heavy metals from contaminated water and soil. Researchers examined how various modification techniques enhance biochar's adsorption performance for removing toxic metals from environmental substrates. The study provides a reference for practical applications of modified biochar in heavy metal remediation projects.
Exploring the Adsorption of Pb on Microalgae-Derived Biochar: A Versatile Material for Environmental Remediation and Electroanalytical Applications
Researchers developed biochar from the marine microalga Nannochloropsis sp. at 350 degrees C and found it outperformed nutshell-derived biochar for adsorbing lead (II) ions in aqueous solution under all tested conditions including varying pH, ionic strength, and dissolved organic matter. The microalgae-derived biochar also improved voltammetric lead detection sensitivity by twofold when applied to screen-printed electrodes.
A correlation of the adsorption capacity of perovskite/biochar composite with the metal ion characteristics
Researchers created a composite material combining perovskite (a mineral-like crystal) and biochar (charred plant material) to remove toxic heavy metals — lead, cadmium, and copper — from water, achieving very high removal capacities of up to 606 mg per gram for lead. The material was highly selective, worked well in real wastewater, and could be regenerated and reused multiple times, offering promise for water purification applications.
Optimization and Thermodynamic Studies of Lead (II) and Cadmium (II) Ions Removal from Water Using Musa acuminate Pseudo-Stem Biochar
Researchers used biochar made from banana plant stems to remove lead and cadmium from contaminated water in Uganda, finding it effective at reducing these toxic heavy metals below safe drinking water limits.
Preparation and Characterization of Cattail-Derived Biochar and Its Application for Cadmium Removal
Researchers produced biochar from different parts of the cattail plant and tested its ability to remove heavy metals from water. Plant-derived biochars offer a sustainable and low-cost approach to water treatment, relevant to cleaning up environments where microplastics and co-occurring heavy metals are both present.
Adsorption of heavy metal onto biomass-derived activated carbon: review
This review summarizes how activated carbon made from plant-based materials can be used to remove heavy metals from polluted water. Since microplastics in water often carry and concentrate heavy metals on their surface, improving our ability to filter these combined contaminants is important for protecting drinking water and human health.
Removal of Heavy Metal Ions (Pb2+, Co2+, and Cd2+) by Activated Carbon from Cypress Fruit: An Investigation of Kinetics, Thermodynamics, and Isotherms
Researchers used activated carbon cloth derived from cypress fruit to investigate the removal of lead, cadmium, and cobalt heavy metal ions from water. They characterized the adsorption process across different conditions including pH, temperature, and contact time. The study demonstrates the potential of bio-derived activated carbon as an adsorbent for removing heavy metal contaminants from water systems.
Adsorption properties and mechanism of Pb2+ in hydrothermal carbon solution of modified banana peel
This study examined banana peel-derived hydrothermal carbon modified with phosphoric acid for removing lead ions from water. The study is focused on heavy metal water treatment and is not directly related to microplastic research.
The Use of Biochar for Removal of Emerging Contaminants in Contaminated Water
This literature review examined 15 studies on biochar for removing emerging contaminants from water and effluents, finding that biochar made from waste raw materials is a low-cost, efficient, and scalable adsorbent for various pollutants. The review is relevant to microplastic research as biochar has potential as a treatment material for water contaminated with emerging contaminants co-occurring with microplastics.
Removal of Co-Occurring Microplastics and Metals in an Aqueous System by Pristine and Magnetised Larch Biochar
Researchers tested pristine and modified biochar for simultaneous removal of co-occurring microplastics and heavy metals from water, finding that biochar surface modifications improved adsorption of both contaminant classes, offering a promising dual-removal treatment strategy.
Enhanced removal of PVC nanoplastics from water using microwave-activated palm frond biochar
Researchers developed a low-cost sorbent from palm-frond agricultural waste by microwave activation and NaOH treatment, and further produced a magnetically retrievable composite for enhanced removal of PVC nanoplastics from water. The modified palm-frond biochar demonstrated substantially improved nanoplastic adsorption capacity compared to unmodified biochar, offering a sustainable remediation material derived from agricultural waste.
Conversion of the styrofoam waste into a high-capacity and recoverable adsorbent in the removing the toxic Pb(II) from water media
Researchers chemically modified waste styrofoam — a common plastic pollutant — into a magnetic adsorbent capable of removing toxic lead (Pb²⁺) ions from water, achieving around 90% removal efficiency. This work shows that plastic waste can be repurposed into useful water-treatment materials, offering a dual benefit of reducing plastic waste while cleaning heavy metal contamination.
A Recyclable Magnetic Biochar from Corn Cobs and Red Mud for Treating Complex Contaminants Containing Dyes and Heavy Metals
Researchers synthesized a recyclable magnetic multifunctional biochar (MMBC-400) from co-pyrolysis of corn cobs and red mud at 400°C and demonstrated its effectiveness for simultaneously removing malachite green dye and Pb2+ from complex wastewater, achieving high removal efficiency in both single and binary contaminant systems with magnetic recyclability.
Emerging contaminants in polluted waters: Harnessing Biochar's potential for effective treatment
This review explores how biochar, a carbon-rich material made from organic waste, can be used to remove a wide range of pollutants from contaminated water, including microplastics, heavy metals, antibiotics, and PFAS. Biochar works through multiple mechanisms like adsorption, electrostatic interactions, and chemical bonding, and can be enhanced through surface modifications. The study highlights biochar as a low-cost, adaptable tool for addressing emerging water contaminants.
Adsorption Phenomenon of Arundinaria alpina Stem-Based Activated Carbon for the Removal of Lead from Aqueous Solution
Researchers found that activated carbon prepared from locally sourced Arundinaria alpina bamboo effectively removed lead from aqueous solution, with removal efficiency influenced by solution pH, initial lead concentration, and adsorbent dose.
Competitive heavy metal adsorption on pinecone shells: Mathematical modelling of fixed-bed column and surface interaction insights
Researchers tested pinecone shells as a low-cost biosorbent for removing multiple heavy metals from water in a continuous-flow column setup. They found the material was particularly effective at capturing lead and copper, with adsorption capacities that compared favorably to other natural materials. The study provides mathematical models that could help scale up pinecone shell-based water treatment for real-world applications.
Biochar : A Review of its History, Characteristics, Factors that Influence its Yield, Methods of Production, Application in Wastewater Treatment and Recent Development
This review examines biochar's history, physicochemical properties, production methods, and applications in wastewater treatment, highlighting its high porosity and diverse functional groups that enable effective adsorption of contaminants including heavy metals and organic pollutants.