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芬顿试剂强化超临界水氧化法处理3-羟基吡啶生产过程中产生的废水

Fenton's reagent-enhanced supercritical water oxidation of wastewater released from 3-hydroxypyridine production.

作者信息

Bu Junru, Liu Huan, Lin Chunmian

机构信息

College of Environment, Zhejiang University of Technology Hangzhou 310014 Zhejiang China

出版信息

RSC Adv. 2019 Sep 17;9(50):29317-29326. doi: 10.1039/c9ra05510j. eCollection 2019 Sep 13.

DOI:10.1039/c9ra05510j
PMID:35528409
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9071961/
Abstract

A study on Fenton's reagent-enhanced supercritical water oxidation (SCFO) of wastewater released from 3-hydroxypyridine production was carried out in this paper. The effects of temperature, oxidant multiple, residence time, Fe concentration, and pH on the degradation efficiency of wastewater were investigated. The Plackett-Burman test was designed to evaluate various factors, namely, temperature, oxidant multiple, and pH, which were found to significantly affect degradation efficiency. Response surface analysis was performed to optimize the parameter levels of the main influencing factors. The results indicated that the optimal conditions required for the oxidative degradation of wastewater in the SCFO systems were pH of 3, temperature of 473 °C, oxidant multiple of 7, Fe concentration of 0.5 mg L, and residence time of 262.6 s (flow rate: 1.5 mL min). Under these conditions, the total organic carbon removal rate of the wastewater could reach 98.1%. The activation energy of the wastewater under SCFO conditions was 55.3 kJ mol, and the pre-exponential factor was 52.8 s.

摘要

本文开展了一项关于芬顿试剂强化3-羟基吡啶生产废水超临界水氧化（SCFO）的研究。考察了温度、氧化剂倍数、停留时间、铁浓度和pH对废水降解效率的影响。设计了Plackett-Burman试验来评估各种因素，即温度、氧化剂倍数和pH，发现这些因素对降解效率有显著影响。进行了响应面分析以优化主要影响因素的参数水平。结果表明，SCFO系统中废水氧化降解所需的最佳条件为pH 3、温度473℃、氧化剂倍数7、铁浓度0.5 mg/L和停留时间262.6 s（流速：1.5 mL/min）。在此条件下，废水的总有机碳去除率可达98.1%。SCFO条件下废水的活化能为55.3 kJ/mol，指前因子为52.8 s。

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