Sustainable water treatment: Harnessing mining waste as catalysts for Sicomet green degradation

IF 4.5 3区 工程技术 Q1 WATER RESOURCES Water Resources and Industry Pub Date : 2024-09-27 DOI:10.1016/j.wri.2024.100269
Mohammed Kebir , Hichem Tahraoui , Imene Kahina Benramdane , Noureddine Nasrallah , Selma Toumi , Jie Zhang , Abdeltif Amrane
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Abstract

This paper presents a novel circular economy approach to water remediation that focuses on creating sustainable systems by utilizing mining waste from El-Ouenza, Tebessa, in the east of Algeria. Waste materials are employed as catalysts in Fenton and photo-Fenton processes. Two cases were studied: the conventional and the modified heterogeneous photo-Fenton at a pH of 3 and under modified pH conditions for degrading Sicomet Green food dye ZS120. Catalysts were characterized through various analyses. Catalyst performance and dye degradation were examined for raw and calcined waste at 500 °C. Parameters like catalyst amount, sodium sulfite concentration, oxalic acid, and pH were optimized for both systems, with and without ligand. The first system achieved 91.5 % mineralization using 0.15 g L−1 catalyst, pH of 3, and 0.45 mM Na2SO3 in 90 min under sunlight. The second reached 78.5 % efficiency with variable conditions. Kinetic models demonstrated a first-order model for both photo-Fenton degradation and mineralization under sunlight. These findings guide eco-friendly dye degradation via mining waste-based catalysts in photo-Fenton systems, supporting sustainable wastewater treatment.

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可持续水处理:利用采矿废料作为催化剂实现 Sicomet 绿色降解
本文介绍了一种新颖的循环经济水修复方法,其重点是利用阿尔及利亚东部泰贝萨 El-Ouenza 的采矿废料创建可持续系统。废料被用作芬顿和光-芬顿工艺的催化剂。研究了两种情况:在 pH 值为 3 的条件下降解 Sicomet Green 食品染料 ZS120 的传统和改良异相光-芬顿以及在改良 pH 值条件下降解 Sicomet Green 食品染料 ZS120。通过各种分析对催化剂进行了表征。催化剂性能和染料降解情况在 500 °C 下对未加工和煅烧过的废料进行了检测。催化剂用量、亚硫酸钠浓度、草酸和 pH 值等参数在有配体和无配体的两种体系中进行了优化。第一个系统在阳光下使用 0.15 g L-1 催化剂、pH 值为 3 和 0.45 mM Na2SO3,90 分钟内矿化率达到 91.5%。第二个系统在不同条件下的效率达到 78.5%。动力学模型显示,光-芬顿降解和阳光下矿化均为一阶模型。这些发现为在光-芬顿系统中通过基于采矿废料的催化剂进行生态友好型染料降解提供了指导,从而支持了可持续的废水处理。
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来源期刊
Water Resources and Industry
Water Resources and Industry Social Sciences-Geography, Planning and Development
CiteScore
8.10
自引率
5.90%
发文量
23
审稿时长
75 days
期刊介绍: Water Resources and Industry moves research to innovation by focusing on the role industry plays in the exploitation, management and treatment of water resources. Different industries use radically different water resources in their production processes, while they produce, treat and dispose a wide variety of wastewater qualities. Depending on the geographical location of the facilities, the impact on the local resources will vary, pre-empting the applicability of one single approach. The aims and scope of the journal include: -Industrial water footprint assessment - an evaluation of tools and methodologies -What constitutes good corporate governance and policy and how to evaluate water-related risk -What constitutes good stakeholder collaboration and engagement -New technologies enabling companies to better manage water resources -Integration of water and energy and of water treatment and production processes in industry
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