本文關(guān)鍵詞：Fenton法處理含植物多酚類廢水的作用機(jī)制及在檳榔廢水中的應(yīng)用　出處：《湖南農(nóng)業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 檳榔廢水 植物多酚 Fenton試劑 機(jī)理

【摘要】：檳榔煮籽廢水是一種高濃度、高色度的有機(jī)酸性廢水,屬于難生物降解廢水。目前,國(guó)內(nèi)外針對(duì)檳榔煮籽廢水處理的專項(xiàng)研究少有報(bào)道,僅有針對(duì)檳榔加工企業(yè)排放的綜合廢水的報(bào)道,然而由于沒有專門的工藝研究,目前開發(fā)的處理工藝操作繁瑣,成本高昂,影響了其在檳榔加工廢水處理領(lǐng)域的推廣應(yīng)用。本論文基于檳榔廢水含有難降解成分,造成可生化性下降,以此探究檳榔煮籽廢水中抑制微生物生長(zhǎng)的有效成分,以Fenton試劑氧化法處理模擬廢水并應(yīng)用于實(shí)際廢水,采用響應(yīng)面法優(yōu)化工藝條件,利用LC-MS聯(lián)用技術(shù)測(cè)定Fenton試劑處理含有效成分的模擬廢水中的化合物,探討Fenton試劑作用檳榔廢水的機(jī)理,以期為檳榔煮籽廢水的處理提供新的思路和設(shè)計(jì)依據(jù)。(1)探索了高效液相色譜法測(cè)定表兒茶素與蘆丁的液相色譜條件,測(cè)定了檳榔廢水中表兒茶素與蘆丁的含量。液相色譜條件為：以甲醇與0.1%的磷酸溶液為流動(dòng)相,梯度洗脫程序?yàn)椋篛min:20%B,8min:100%B,9min:20%B, 10min:20%B,檢測(cè)波長(zhǎng)236nm,柱溫40℃,流速1.0mL/min,進(jìn)樣量為10ul,在此條件下,表兒茶素與蘆丁能夠得到很好的分離,表兒茶素與蘆丁的線性回歸方程分別為y=5.6126x-0.1248(R2=0.9997), y=12.237+0.2929 (R2=0.9994),平均回收率為100.9%、97.48%,精密度RSD為1.7%、1.9%。表兒茶素、蘆丁的保留時(shí)間分別為：756min、8.82min。(2) Fenton試劑氧化技術(shù)具有較強(qiáng)的氧化能力,且反應(yīng)條件較易控制,能夠去除模擬廢水中的TOC與COD,實(shí)驗(yàn)研究了Fenton試劑法處理含表兒茶素模擬廢水的最優(yōu)工藝條件,以廢水中的TOC與COD的去除率為指標(biāo),根據(jù)單因素實(shí)驗(yàn)結(jié)果確定響應(yīng)面分析法的影響因子�；贐ox-Behnken響應(yīng)曲面法,考察了初始pH值、雙氧水投加量、硫酸亞鐵投加量和反應(yīng)時(shí)間的單獨(dú)作用和交互作用,并建立了TOC去除率數(shù)學(xué)模型。當(dāng)表兒茶素的濃度為2OOmg/L時(shí),取模擬水樣200m1置于燒杯中進(jìn)行Fento n氧化反應(yīng),實(shí)驗(yàn)表明,在初始pH值為4,雙氧水投加量為7.5ml/L,硫酸亞鐵投加量為1.25g/L,反應(yīng)時(shí)間為12Omin, PAM加入量為0.2%時(shí),整個(gè)反應(yīng)過程對(duì)TOC去除率可達(dá)到67%。通過Box-Behnken響應(yīng)曲面可知,初始pH值、硫酸亞鐵投加量的交互作用對(duì)TOC去除率有顯著影響,其中雙氧水投加量、硫酸亞鐵投加量與反應(yīng)時(shí)間對(duì)TOC去除率的影響極顯著。Fenton試劑處理模擬廢水最佳的工藝條件為：雙氧水投加量為10.6ml/L,硫酸亞鐵投加量2.25g/L,初始pH值為4.59,反應(yīng)時(shí)間為74min。在此條件下TOC去除率為82%。(3)實(shí)驗(yàn)研究了Fenton試劑法處理含蘆丁的模擬廢水的最優(yōu)工藝條件,以廢水中的TOC與COD的去除率為指標(biāo),根據(jù)單因素實(shí)驗(yàn)結(jié)果確定響應(yīng)面分析法的影響因子。采用Design-expert8.0軟件進(jìn)行響應(yīng)面試驗(yàn)設(shè)計(jì),當(dāng)蘆丁的濃度為200mg/L時(shí),取模擬水樣200ml置于燒杯中進(jìn)行Fenton氧化反應(yīng),實(shí)驗(yàn)表明,在初始pH值為4,雙氧水投加量為7.5mL/L,硫酸亞鐵投加量為1.5g/L,反應(yīng)時(shí)間為120min, PAM加入量為0.5%時(shí),整個(gè)反應(yīng)過程對(duì)TOC去除率可達(dá)到68.3%。通過Box-Behnken響應(yīng)曲面可知,初始pH值、硫酸亞鐵投加量與反應(yīng)時(shí)間的交互作用對(duì)TOC去除率有顯著影響,其中硫酸亞鐵投加量、反應(yīng)時(shí)間對(duì)TOC去除率的影響極顯著。最佳反應(yīng)條件為雙氧水投加量7.6ml/L,硫酸亞鐵投加量2.05g/L,初始pH值3.83,反應(yīng)時(shí)間73min,在此反應(yīng)條件下TOC去除率為74.6%。(4)實(shí)驗(yàn)研究了Fenton試劑法處理檳榔廢水的最優(yōu)工藝條件,以廢水中的TOC與COD的去除率為指標(biāo),根據(jù)單因素實(shí)驗(yàn)結(jié)果確定響應(yīng)面分析法的影響因子�；贐ox-Behnken響應(yīng)曲面法,當(dāng)檳榔廢水中COD濃度為6300mg/L時(shí),實(shí)驗(yàn)表明,在初始pH值為5,雙氧水投加量為50mg/L,硫酸亞鐵投加量為12.5g/L,反應(yīng)時(shí)間為120min,PAM加入量為0.2%時(shí),整個(gè)反應(yīng)過程對(duì)TOC去除率可達(dá)到65%。通過Box-Behnken響應(yīng)曲面可知,雙氧水投加量、硫酸亞鐵投加量的交互作用對(duì)TOC去除率有顯著影響,其中雙氧水投加量對(duì)TOC去除率的影響極顯著。Fenton試劑處理檳榔廢水最佳的工藝條件為：雙氧水投加量為54.2ml/L,硫酸亞鐵投加量12.55g/L,初始pH值為4.98,反應(yīng)時(shí)間為103min。在此條件下TOC去除率為70%。(5)利用液質(zhì)聯(lián)用技術(shù)分析Fenton試劑氧化含多酚類物質(zhì)蘆丁的模擬廢水的產(chǎn)物,從結(jié)果可以看出,Fenton試劑氧化蘆丁的主要途徑有兩種：一種是在酸性條件下水解蘆丁為槲皮素與蕓香糖,槲皮素在羥基自由基的作用下,B環(huán)上的羥基被氧化為酮基,再進(jìn)一步氧化為小分子化合物；另一種是羥基自由基直接攻擊B環(huán)與C環(huán)之間的氧原子,產(chǎn)生兩種氧化物,最終被進(jìn)一步氧化為二氧化碳或者小分子化合物。
[Abstract]:Areca cooked seed wastewater is a kind of high concentration, high chroma of the organic acid wastewater, which belongs to the wastewater. At present, domestic and foreign to the areca cook special research of wastewater treatment seeds were rarely reported, only for wastewater discharge enterprises areca processing reports, however due to the lack of specialized research process, process operation at present the development of complex, high cost, affects its application in the field of areca processing wastewater. This paper based on areca wastewater containing refractory components, resulting in biodegradability decreased, in order to explore areca cooking waste water by inhibiting microbial effective components of seed growth, with Fenton reagent oxidation of simulated wastewater and Application in wastewater. Under the optimized condition by response surface method, combined compound Fenton reagent treatment of simulated wastewater containing active ingredients in the determination by LC-MS technique, to investigate the Fenton reagent The mechanism of areca wastewater, in order to provide new ideas and design basis for the treatment of wastewater. Areca cooked seeds (1) to explore the HPLC method for the determination of epicatechin and rutin by HPLC, catechin and rutin content in wastewater by areca. A liquid chromatography with 0.1% phosphoric acid solution and methanol as mobile phase, gradient elution program: Omin:20%B, 8min:100%B, 9min:20%B, 10min:20%B, the detection wavelength of 236nm, the column temperature was 40 degrees, 1.0mL/min flow rate, sample volume was 10ul, under this condition, epicatechin and rutin can be well separated, linear regression equation. Catechin were y=5.6126x-0.1248 and rutin (R2=0.9997), y=12.237+0.2929 (R2=0.9994), the average recovery rate was 100.9%, 97.48%, RSD of precision was 1.7%, 1.9%. epicatechin, rutin retention time were: 756min, 8.82min. (2) Fenton oxidation technology Strong oxidation ability, and the reaction condition is easy to control, can TOC and COD removal from simulated wastewater, experimental study on Fenton reagent optimal conditions containing epicatechin in simulated wastewater, with TOC and COD in wastewater removal rate as the index, according to the single factor test results to determine the response method the impact factor analysis. The response surface method based on Box-Behnken, the influence of initial pH value, h2o2dosage, single action and interaction of ferrous sulfate dosage and reaction time, and establishes a mathematical model of the removal rate of TOC. When the epicatechin concentration is 2OOmg/L, the Fento n oxidation reaction. Simulation of water 200m1 placed in a beaker experiment showed that in the initial pH value is 4, the hydrogen peroxide dosage was 7.5ml/L, ferrous sulfate dosage is 1.25g/L, the reaction time is 12Omin, the PAM content is 0.2%, the removal rate of TOC reaction process To 67%. through the Box-Behnken response surface shows that the initial pH value, FeSO 4 interaction dosage on TOC removal rate has a significant effect, the hydrogen peroxide dosage, ferrous sulfate dosage and reaction time on the removal rate of TOC was significantly.Fenton reagent treatment of simulated wastewater the best process conditions: hydrogen peroxide dosage the amount of 10.6ml/L, ferrous sulfate dosage of 2.25g/L, initial pH value is 4.59, the reaction time was 74min. under this condition, the removal rate of TOC is 82%. (3) experiment of Fenton reagent optimal conditions of simulated wastewater containing rutin, TOC and COD in wastewater removal rate as the index, according to the single the experimental results to determine the factors of the impact factor response surface analysis method. The response surface experimental design by using Design-expert8.0 software, when the rutin concentration is 200mg/L, the Fenton oxidation of simulated water sample 200ml is placed in a beaker Should the experiments show that in the initial pH value is 4, the hydrogen peroxide dosage was 7.5mL/L, ferrous sulfate dosage is 1.5g/L, the reaction time is 120min, the PAM content is 0.5%, the reaction process of 68.3%. removal rate can reach Box-Behnken by response surface according to TOC, the initial pH value, FeSO 4 interaction dosage and reaction time on the removal rate of TOC has a significant effect, the ferrous sulfate dosage, reaction time on the removal rate of TOC had significant effect. The optimum reaction conditions for hydrogen peroxide dosage 7.6ml/L, ferrous sulfate dosage of 2.05g/L, initial pH value 3.83, reaction time 73min, the removal rate under the reaction conditions TOC 74.6%. (4) experiment of Fenton reagent optimal conditions of areca wastewater, with TOC and COD in wastewater removal rate as the index, according to the results of single factor experiments to determine the response surface analysis of the impact factor based on Box-Behnken. The response surface method, when the areca COD in the effluent concentration of 6300mg/L, experiments show that the initial pH value is 5, the hydrogen peroxide dosage was 50mg/L, ferrous sulfate dosage is 12.5g/L, the reaction time is 120min, the PAM content is 0.2%, the reaction process of removal rate can reach 65 by response surface Box-Behnken%. According to TOC, the dosage of hydrogen peroxide and ferrous sulfate plus the amount of investment and interaction on the TOC removal rate has a significant effect, the effect of hydrogen peroxide dosage on the removal rate of TOC was significantly.Fenton reagent treatment conditions for areca wastewater: hydrogen peroxide dosage is 54.2ml/L, ferrous sulfate dosage of 12.55g/L, initial the pH value is 4.98, the reaction time was 103min. under this condition, the removal rate of TOC is 70%. (5) simulated wastewater containing polyphenol rutin product combined with technical analysis of Fenton oxidation by liquid substances, can be seen from the results, Fenton reagent The main way of oxidation of rutin has two kinds: one kind is hydrolyzed under acidic conditions for quercetin and rutin rutinose, quercetin in hydroxyl radicals under the action of B on the oxidation of hydroxyl ring ketone, and further oxidation of small molecule compounds; the other is between the oxygen atoms of hydroxyl radical attack B and C rings, produced two kinds of oxides, was further oxidized to carbon dioxide or small molecular compounds.

【學(xué)位授予單位】：湖南農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X792

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1 周雅莉;紫外光結(jié)合Fenton法處理炸藥廢水研究[D];中北大學(xué);2006年

2 雷敏;UV-Fenton降解全氟辛酸及其機(jī)理研究[D];華中科技大學(xué);2011年

3 龍冉冉;異相Fenton法降解Orange Ⅱ的研究[D];華南理工大學(xué);2015年

4 方飛;Fe/污泥非均相Fenton催化劑的制備、表征及性能研究[D];浙江大學(xué);2015年

5 周武元;毒死蜱的毒性及其化學(xué)氧化去除的試驗(yàn)研究[D];燕山大學(xué);2015年

6 張曉;葡萄酒廢水Fenton氧化及生物處理實(shí)踐研究[D];青島理工大學(xué);2015年

7 韓征飛;Fenton流化床—混凝沉淀深度處理造紙廢水的試驗(yàn)研究[D];鄭州大學(xué);2015年

8 楊龍;微波協(xié)同F(xiàn)enton降解鄰苯二甲酸二甲酯及協(xié)同機(jī)理研究[D];青島理工大學(xué);2015年

9 印獻(xiàn)棟;強(qiáng)化Fenton氧化深度處理頭孢菌素廢水研究[D];河北科技大學(xué);2014年

10 彭曉t，

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