期刊
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
卷 117, 期 -, 页码 629-638出版社
INST CHEMICAL ENGINEERS
DOI: 10.1016/j.psep.2018.06.007
关键词
Heterogeneous-Fenton; nZVI; Tannery; Large lab-scale; Continuous-reactor
资金
- Spanish Ministry of Economy and Competitiveness [CTM2014-61105-JIN]
This study reports a comparison among Conventional Fenton oxidation (CF) and Heterogeneous Fenton oxidation (HF) processes performed at large lab-scale on a Tannery Wastewater (TW). The heterogeneous Fenton process was carried out by using self lab-prepared nano zero-valent iron particles as solid catalyst. Two different catalyst/oxidant (Cat/Ox) (w/w) ratio were examined: a study on the pH solution influence on the process efficiency, monitoring the COD, TP, H2O2 and Cr(VI) variation over the reaction time was carried out. The process was conducted for 10 h in batch mode for the first 2 h, followed by 8 h in continuous mode. HF demonstrated better performance, with respect to CF, towards both the removal of Chemical Oxygen Demand (COD), up to 75.5 +/- 2.1%, and Total Polyphenols (TP), up to 85.1 +/- 0.7%, from the TW. The CF optimal operating parameters were Cat/Ox (w/w) = 0.2 and pH = 2.5 whereas to maximize the I-IF efficiency a larger Cat/Ox (w/w) ratio, i.e. 0.5, was necessary. In addition, a lower amount of iron sludge was produced by HF with respect to CF (17.5-21.6%). Finally, a kinetic model on the reactions occurring in the HF/TW system was proposed and successfully used to fit experimental data. (C) 2018 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据