Biochar MMT ZnAl LDH composite materials derived from solid waste for heavy metal removal in artificial acid mine drainage

被引：0

作者：

Yudha Gusti Wibowo ^{[1
]}

Hana Safitri ^{[2
]}

Wahyu Dera Kusumawati ^{[10
]}

Richar Aini ^{[10
]}

Simparmin Br Farantino ^{[3
]}

Asnan Ginting ^{[3
]}

Setyo Budi Rinovian ^{[10
]}

Khairurrijal Kurniawan ^{[3
]}

Tarmizi Khairurrijal ^{[4
]}

Wida Banar Taher ^{[5
]}

Sudibyo Kusumaningrum ^{[6
]}

Ahmad Tawfiequrrahman Sudibyo ^{[2
]}

Himawan Tri Bayu Murti Yuliansyah ^{[7
]}

undefined Petrus ^{[2
]}

机构：

[1] Department of Chemical Engineering (Sustainable Mineral Processing Research Group), Universitas Gadjah Mada, Jalan Grafika No. 2, Bulaksumur, Depok, Sleman, Yogyakarta

[2] Center for Green and Sustainable Materials, Institut Teknologi Sumatera, Terusan Ryacudu, Way Hui, Jati Agung, Lampung Selatan

[3] Department of Chemical Engineering, Universitas Lampung, Jl. Prof. Dr. Ir. Sumantri Brojonegoro No. 1, Gedong Meneng, Kec. Rajabasa, Kota Bandar Lampung, Lampung

[4] Research Center for Mining Technology, National Research and Innovation Agency, Jl. Ir. Sutami KM. 15 Tanjung Bintang, South Lampung, Lampung

[5] Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Selangor, Bangi

[6] Research Center for Environment and Clean Technology, National Research and Innovation Agency (BRIN), Jakarta Pusat

[7] Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung

[8] Department of Environmental Engineering, Institut Teknologi Sumatera, Lampung Province

[9] Unconventional Geo-resources Research Group, Faculty of Engineering, Universitas Gadjah Mada, Jalan Grafika No. 2 Kampus UGM Bulaksumur, D.I. Yogyakarta

[10] Sustainable Mining and Environmental Research Group, Department of Mining Engineering, Faculty of Technology Industry, Institut Teknologi Sumatera, Lampung Province

[11] Research Center for Biomass and Bioproducts, Badan Riset dan Inovasi Nasional, Bogor

来源：

Scientific Reports | / 15卷 / 1期

关键词：

Biochar_MMT_ZnAl LDH; Environmental remediation; Heavy metals removal; Novel composite materials; Waste-derived adsorbents;

D O I：

10.1038/s41598-025-96987-4

中图分类号：

学科分类号：

摘要：

This study investigates the synthesis and performance of a biochar-based composite, integrating montmorillonite (MMT) and ZnAl layered double hydroxide (LDH), for the removal of Fe and Mn from acid mine drainage. The biochar_MMT_ZnAl LDH composite, synthesized from solid waste materials, was characterized using BET, XRD, FTIR, TGA, and SEM-EDS analyses. The material demonstrated a surface area of 117.54 m2/g and a pore volume of 0.21 cm3/g, significantly surpassing non-composite biochar with a surface area of 14.81 m2/g. The batch sorption experiment showed rapid adsorption kinetics, achieving 99% Mn removal within 7 min at 0.5 g adsorbent dosage, reducing Mn concentration from 100 mg/L to 0.07 mg/L. For Fe, an 87% reduction was achieved after 400 min using 0.5 g of plain biochar, while biochar_MMT_ZnAl LDH showed superior adsorption performance with a final Fe concentration below 0.07 mg/L. Adsorption isotherm analysis indicated that biochar followed the Dubinin–Radushkevich model, while the composites adhered to the Redlich–Peterson model. Kinetic studies revealed a strong fit with the Pseudo-Second-Order model (R2 = 1 for biochar_MMT), suggesting chemisorption as the dominant mechanism. Thermodynamic analysis confirmed the spontaneity and endothermic nature of the adsorption process, with ΔG values ranging from − 18,758 to − 92,932 J/mol for Fe and Mn removal. The findings highlight the potential of biochar-based composites in developing cost-effective and environmentally sustainable solutions for acid mine drainage treatment. © The Author(s) 2025.

引用

共 82 条

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