Electrochemical activation of peroxides for treatment of contaminated water with landfill leachate: Efficacy, toxicity and biodegradability evaluation | IDCSA, NCHU

Electrochemical activation of peroxides for treatment of contaminated water with landfill leachate: Efficacy, toxicity and biodegradability evaluation 2021-08-17

Recycling Agriculture: Rising value of Agricultural Waste【Department of Environmental Engineering / Lin, Kun-Yirew / Distinguished Professor】
循環農業：農業廢棄物高價值化【環境工程學系/林坤儀特聘教授】

論文篇名	英文：Electrochemical activation of peroxides for treatment of contaminated water with landfill leachate: Efficacy, toxicity and biodegradability evaluation 中文：過氧化物電化學活化處理垃圾滲濾液污染水：功效、毒性和生物降解性評價
期刊名稱	Chemosphere
發表年份,卷數,起迄頁數	2021,279,130610
作者	Ghanbari, Farshid; Wang, Qilin; Hassani, Aydin; Waclawek, Stanislaw; Rodriguez-Chueca, Jorge; Lin, Kun-Yi Andrew(林坤儀)*
DOI	10.1016/j.chemosphere.2021.130610
中文摘要	含有高鹽度和高有機物含量（總有機碳 (TOC) ¼ 649 毫克/升和化學需氧量 (COD) ¼ 1175 毫克/升）的垃圾滲濾液 (CWLL) 污染水是一種有毒且不可生物降解的污水。本研究旨在通過電凝 (EC)/氧化過程評估 CWLL 的治療效果。在此過程中產生的亞鐵離子被用作凝結劑和催化劑，用於活化不同的氧化劑，如過硫酸鹽 (PMS)、過硫酸鹽 (PDS)、過氧化氫 (HP) 和過碳酸鹽 (PC)，以降低 CWLL 中的 TOC。在各種工藝中探索了從 CWLL 流出物中去除氨、顏色、磷和化學需氧量 (COD)。 EC/HP 在有機污染物礦化方面表現最好（~73%）在 pH 6.8、外加電流 200 mA、氧化劑用量 6 mM、時間 80 min 的條件下，與其他條件相比。氧化優先順序為：EC/HP > EC/PMS > EC/PDS > EC/PC。這些過程基於平均氧化態和生化需氧量 (BOD)/COD 比增強了 CWLL 的生物降解性。 SUVA₂₅₄ 和 E₂/E₃ 指數也對獲得的流出物進行了研究。基於發芽指數進行植物毒性評價，表明電活化氧化劑是降低污染水體毒性的有效系統。與其他產品相比，EC/HP 在效率、成本和解毒方面表現出優勢。因此，電活化氧化劑系統是去除實際廢水中有機污染物的良好手段。
英文摘要	Contaminated water with landfill leachate (CWLL) with high salinity and high organic content (total organic carbon (TOC) = 649 mg/L and Chemical Oxygen Demand (COD) = 1175 mg/L) is a toxic and non-biodegradable effluent. The present research aimed to assess the treatment effectiveness of CWLL by electrocoagulation (EC)/oxidant process. The ferrous ions generated during the process were employed as coagulant and catalyst for the activation of different oxidants such as peroxymonosulfate (PMS), peroxydisulfate (PDS), hydrogen peroxide (HP), and percarbonate (PC) to decrease TOC in CWLL. Removal of ammonia, color, phosphorous, and chemical oxygen demand (COD) from CWLL effluent was explored at various processes. EC/HP had the best performance (∼73%) in mineralization of organic pollutants compared to others under the condition of pH 6.8, applied current of 200 mA, oxidant dosage of 6 mM, and time of 80 min. The oxidation priority was to follow this order: EC/HP > EC/PMS > EC/PDS > EC/PC. These processes enhanced the biodegradability of CWLL based on the average oxidation state and biochemical oxygen demand (BOD)/COD ratio. SUVA₂₅₄ and E₂/E₃ indices were also investigated on obtained effluents. The phytotoxicity evaluation was carried out based on the germination index, indicating that the electro-activated oxidant was an effective system to reduce the toxicity of polluted waters. EC/HP showed supremacy compared to others in terms of efficiency, cost, and detoxification. Therefore, the electro-activated oxidant system is a good means for removing organic pollutants from real wastewater.
發表成果與本中心研究主題相關性	透過本研究可進一步建立開發本研究計算所需之氧化技術，並釐清可適合應用之環境條件!