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Open access Aug 2026

Multi-parameter optimization of Mn(II) adsorption onto KOH-activated Pinus roxburghii biochar using Box-Behnken methodology

Manganese contamination in drinking water poses a significant environmental and public health concern, particularly in regions impacted by industrial discharges and geogenic leaching. This study investigates the potential of activated biochar derived from Pinus roxburghii pinecones (PCB), an abundant forestry residue,...

Vishesh Choudhary, Dharmendra, Sumit Kumar · 0 citations
Open access Sep 2026

KOH-Activated Iron-Modified Corn Straw Biochar for Nitrate Removal: Preparation, Adsorption Performance, and Mechanism

Nitrate contamination of groundwater requires low-cost adsorbents with strong affinity for anionic species. This study developed an iron-modified corn straw biochar (Fe-BC) by coupling KOH activation with FeCl3 impregnation and secondary pyrolysis, thereby integrating a porous carbon framework with iron-derived adsorpt...

Xiao-Yu Li, Yuan Liu, Chao-Kun Wang et al. · 0 citations
Open access Aug 2026

Integrated kinetic, isotherm, ANN, and RSM-based optimization modelling of acid brown 14 removal using ethylenediamine-decorated Delonix regia pod biochar

The increasing discharge of recalcitrant azo dyes from textile and industrial effluents poses serious ecological and human health risks, necessitating the development of sustainable and cost-effective treatment strategies. The objective of the present study is to examine the adsorption performance of ethylenediamine-fu...

M. Hassaan, Mohamed A. El-Nemr, Tarek O. Said et al. · 0 citations
Open access Sep 2026

Removal of Pb(II) from Water by Potassium Permanganate-Modified Areca Fiber Biochar: Performance and Mechanism

Heavy metal contamination, particularly lead (Pb) pollution in aquatic environments, poses serious threats to ecosystems and human health, necessitating the development of efficient and cost-effective adsorbents. In this study, potassium permanganate-modified areca fiber biochar (PAFB) is successfully synthesized for P...

Ping-Ping Yang, Yun-Quan Liu, Wan-Xin Cheng et al. · 0 citations
Open access Sep 2026

Adsorptive Removal of Pb(II), Ni(II), and Co(II) from Simulated Wastewater Using Delonix Regia Seed: Equilibrium and Kinetic Studies

The development of low-cost biosorbents from agricultural biomass offers a sustainable approach for the remediation of heavy metal-contaminated wastewater. In this study, Delonix regia seed (DRS) was evaluated as a natural biosorbent for the removal of Pb(II), Ni(II), and Co(II) ions from simulated wastewater. The ad...

Oyewole Seun, Osundiya Olubunmi, Agumadu Chukwuma et al. · 0 citations
Open access Sep 2026

Investigation into Adsorption Performance and Mechanism for Copper on Red Mud Modified Biochar

Peanut shells from Shanxi Province were used as the biomass feedstock to prepare three red-mud-modified biochars at red mud-to-peanut-shell mass ratios of 1:1 (RMBC1), 1:5 (RMBC2), and 1:10 (RMBC3) through suspension loading followed by pyrolysis. Their adsorption behavior and mechanisms for removing Cu2+ from aqueous...

Jian-Xin Pei, Shi-Qi Chang, Xiao-Long Liu et al. · 0 citations

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