{"title":"Exploring raw scoria as an iron catalyst for Fenton-based degradation of pharmaceutical pollutants: kinetic and mechanistic insights","authors":"Amel Hamadi, Fayçal Finnouche, Hiba Kais, Zohra Bensaadi-Ouznadji, Nacera Yeddou-Mezenner","doi":"10.1007/s11144-026-03172-3","DOIUrl":null,"url":null,"abstract":"<div><p>This study investigates the removal of hydroxychloroquine (HCQ) from aqueous solutions using scoria as a natural iron source in the Fenton process. The scoria was characterized by X-ray fluorescence (XRF) and X-ray diffraction (XRD) to determine its elemental composition and crystalline structure. The effects of key operational parameters, including initial pH, hydrogen peroxide concentration, scoria dosage (0.1–1 g L⁻<sup>1</sup>), HCQ concentration (5–25 mg L⁻<sup>1</sup>), and reaction temperature, were systematically evaluated. Under optimal conditions (HCQ = 10 mg L⁻<sup>1</sup>, [H<sub>2</sub>O<sub>2</sub>] = 13 mM, scoria dosage = 0.5 g L⁻<sup>1</sup>, and temperature = 24 °C), a maximum removal efficiency of 98% was achieved. Kinetic analysis indicated that the degradation followed a pseudo-second-order model. These findings demonstrate that scoria is an effective and low-cost catalyst for Fenton-based degradation of pharmaceutical contaminants in water.</p></div>","PeriodicalId":750,"journal":{"name":"Reaction Kinetics, Mechanisms and Catalysis","volume":"139 5","pages":"4727 - 4741"},"PeriodicalIF":2.1000,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reaction Kinetics, Mechanisms and Catalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11144-026-03172-3","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
This study investigates the removal of hydroxychloroquine (HCQ) from aqueous solutions using scoria as a natural iron source in the Fenton process. The scoria was characterized by X-ray fluorescence (XRF) and X-ray diffraction (XRD) to determine its elemental composition and crystalline structure. The effects of key operational parameters, including initial pH, hydrogen peroxide concentration, scoria dosage (0.1–1 g L⁻1), HCQ concentration (5–25 mg L⁻1), and reaction temperature, were systematically evaluated. Under optimal conditions (HCQ = 10 mg L⁻1, [H2O2] = 13 mM, scoria dosage = 0.5 g L⁻1, and temperature = 24 °C), a maximum removal efficiency of 98% was achieved. Kinetic analysis indicated that the degradation followed a pseudo-second-order model. These findings demonstrate that scoria is an effective and low-cost catalyst for Fenton-based degradation of pharmaceutical contaminants in water.
本研究研究了在Fenton工艺中利用矿渣作为天然铁源去除水溶液中的羟氯喹（HCQ）。采用x射线荧光（XRF）和x射线衍射（XRD）对其进行了表征，确定了其元素组成和晶体结构。系统地评估了初始pH、双氧水浓度、炉渣用量（0.1-1 g L - 1）、盐酸浓度（5-25 mg L - 1）和反应温度等关键操作参数对反应的影响。在最佳条件下（HCQ = 10 mg L - 1, [H2O2] = 13 mM， scoria用量= 0.5 g L - 1，温度= 24℃），最大去除率为98%。动力学分析表明，降解符合准二阶模型。这些研究结果表明，矿渣是一种有效且低成本的fenton降解水中药物污染物的催化剂。
期刊介绍：
Reaction Kinetics, Mechanisms and Catalysis is a medium for original contributions in the following fields:
-kinetics of homogeneous reactions in gas, liquid and solid phase;
-Homogeneous catalysis;
-Heterogeneous catalysis;
-Adsorption in heterogeneous catalysis;
-Transport processes related to reaction kinetics and catalysis;
-Preparation and study of catalysts;
-Reactors and apparatus.
Reaction Kinetics, Mechanisms and Catalysis was formerly published under the title Reaction Kinetics and Catalysis Letters.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
