RSM-optimized Mg/Al-LDH biochar composite for enhanced phosphorus removal: Insights into interlayer structure evolution and adsorption mechanism

Zhou, Aohang; Wu, Qi; Zhang, Hongbo; Liu, Jiayi; Wang, Chaoqun; Chi, Daocai; Zhou, Hanmi

doi:10.1016/j.jenvman.2026.128837

articleJournal of Environmental ManagementFeb 6, 2026HYBRID OA

RSM-optimized Mg/Al-LDH biochar composite for enhanced phosphorus removal: Insights into interlayer structure evolution and adsorption mechanism

AZAohang Zhou QWQi Wu HZHongbo Zhang JLJiayi Liu CWChaoqun Wang

Shenyang Agricultural University · Henan University of Science and Technology

PubMed

Indexed incrossrefpubmed

Abstract

High-concentration phosphorus in pesticide tailwater threatens ecosystem balance due to its toxicity and persistence. While abundant nanosheet structures in LDH(layered double hydroxides)-modified biomass enhance wastewater anion adsorption, optimizing LDH structures to maximize phosphate adsorption and elucidating the underlying microscopic mechanisms require further research. This study employed batch adsorption experiments combined with Response Surface Methodology (RSM) to optimize the synthesis conditions of Mg/Al-LDH modified biochar (MABC). The mechanisms underlying its efficient phosphorus adsorption were systematically investigated through XRD, XPS, FTIR, and SEM characterizations. Results show that…

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Topics & keywords

Topics

Keywords

Adsorption
Biochar
Ion exchange
Phosphate
Response surface methodology
Phosphorus
Specific surface area
Pyrolysis

UN Sustainable Development Goals

Clean water and sanitation

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