Insight into the Fenton Stage for DOC Removal in the PhotoFenton Process for Treating Synthetic Textile Wastewater
學年 115
學期 1
出版（發表）日期 2026-08-28
作品名稱 Insight into the Fenton Stage for DOC Removal in the PhotoFenton Process for Treating Synthetic Textile Wastewater
作品名稱（其他語言）
著者 Po-Chin Lee; Jr-Lin Lin; Shyh-Fang Kang; Wei-Wei Lin 1
單位
出版者
著錄名稱、卷期、頁數 Water 18(17), p. 2125
摘要 The photo-Fenton process combines both Fenton and H2O2/UV processes within a single reactor for dissolved organic carbon (DOC) removal. However, the dominant mechanism—iron coagulation or OH• oxidation—at the Fenton stage remains unclear. Synthetic textile wastewater containing reactive dye and polyvinyl alcohol was treated using a batch UV photoreactor. The first 10 min was designated as the Fenton stage, while DOC removal during the initial 30 min of the photo-Fenton process was evaluated through re-dissolution experiments to quantify the relative contributions of iron coagulation and OH• oxidation. The results show that at ferrous dosages of 10–40 mg/L, the Fenton stage contributed 55.6–91.9% of the overall DOC removal achieved by the photo-Fenton process. DOC re-dissolution experiments further demonstrated that DOC removal during this stage was predominantly governed by iron coagulation, which accounted for 68.6–87.2% of the overall DOC removal. In contrast, within the photo-Fenton process, when residual H2O2 was present, DOC removal was predominantly driven by OH• oxidation, accounting for 64.9– 86.3% of total DOC removal. In addition, the specific H2O2 consumption per mg of DOC removed during the Fenton stage was approximately 2–6 times higher than that in the photo-Fenton process, demonstrating that the Fenton stage consumes H2O2 inefficiently and fails to effectively remove DOC through OH• oxidation. To reduce H2O2 dosage, UV irradiation demand, and overall oxidation time, separation of the Fenton and H2O2/UV processes into two distinct reactors is recommended.
關鍵字 photo-Fenton process; Fenton process; iron coagulation; re-dissolution of DOC; H2O2/UV process; synthetic textile wastewater
語言 en
ISSN
期刊性質 國外
收錄於 SCI Scopus
產學合作
通訊作者
審稿制度 是
國別 CHE
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/130014 )