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Дата издания
07.10.2025На каком языке издана
ISSN
ISSN: 2576-988X (Print) ISSN: 2576-9898Область исследования
Тип исследования
Аннотация (краткое описание)
This study reports the synthesis and characterization of a novel sorbent from manganese ore beneficiation tailings (Borly deposit, Kazakhstan), activated with 20% phosphoric acid and thermally treated at 600 °C. Compared to the raw material, the sorbent showed reduced BET surface area (6.05→3.02 m2/g) but increased average pore diameter (13.2→21.8 nm), more negative zeta potential (−4.1→−18.9 mV), and lower water solubility (0.82%). Equilibrium tests revealed ≥99% Cu2+ removal and a maximum capacity of 1.329 mg/g, with a type V isotherm indicating cooperative adsorption on heterogeneous sites. Among tested models, the RALF (Redlich–Anderson–Langmuir–Freundlich) isotherm provided the best fit (R2=0.999), confirming structured and energetically diverse adsorption sites. Kinetics followed a pseudo-second-order model (R2≈1), suggesting chemisorption with mixed physisorption contributions, while intraparticle diffusion was not the sole rate-limiting step. Fixed-bed tests showed a dynamic capacity of 0.68 mg/g. The results highlight a sustainable approach to valorizing manganese tailings for efficient copper removal. This work demonstrates a sustainable approach to valorizing mining waste into functional sorbents for heavy metal removal. Despite their modest adsorption capacity, the materials show high removal efficiency and low cost, making them promising for polishing treatment and other cost-sensitive applications. © The Author(s) 2025. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits the use, sharing, adaptation, distribution and reproduction in any medium or format, as long as appropriate credit to the original author(s) and the source is given by providing a link to the Creative Commons license and changes need to be indicated if there are any. The images or other third-party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.DOI
10.30919/es1775Тип публикаций
Практическое значение
This study demonstrates the potential of manganese ore beneficiation tailings as a sustainable raw material for producing low-cost sorbents for heavy metal removal from wastewater. The developed phosphate-modified sorbent provides highly efficient Cu²⁺ removal, good chemical stability, and suitability for cost-sensitive water treatment applications, while also contributing to the recycling of mining waste and reducing environmental impacts associated with tailings accumulation.Сведения о финансировании
This research has been funded by the Committee of Science of the Ministry of Science and Higher Education of the Republic of KazakhstanКвартиль
Источник квартиля
SCImago (Scopus)Impact Factor
12.5Количество цитирований
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