| 第 50 卷第 1 期 |  | Vol. 50 No. 1 | | 2020 年 2 月 | Feb 2020 |
|
所屬欄目：安全與環(huán)保
輝光放電電解等離子體降解模擬染料廢水堿性紫16的研究 |
| 趙鵬飛，李敏睿
（陜西師范大學(xué) 地理科學(xué)與旅游學(xué)院，陜西 西安 710119） |
| 摘 要：用輝光放電電解等離子體（GDEP）技術(shù)對模擬染料廢水堿性紫16的降解過(guò)程進(jìn)行了研究。通過(guò)對電流電壓曲線(xiàn)分析，闡述了各階段變化趨勢成因，確定產(chǎn)生輝光放電電壓為450 V左右。采用紫外分光光度法對不同降解時(shí)間下堿性紫16脫色率進(jìn)行了分析，結果表明，在600 V電壓下，20 mg·L-1堿性紫16可在40 min時(shí)脫色率達97.8%，整個(gè)降解過(guò)程符合一級動(dòng)力學(xué)反應的特征。加入2 g·L-1 FeCl2后，促進(jìn)了HO·的生成速度，使100 mg·L-1堿性紫16在 40 min時(shí)脫色率達到95.4%。堿性紫16在GDEP降解下，經(jīng)共軛結構的破壞，助色團最終被礦化為CO2和H2O，其中HO·起到了關(guān)鍵性作用。 |
| 關(guān)鍵詞：輝光放電等離子體（GDEP）；羥基自由基；Fenton反應；脫色率 |
| 中圖分類(lèi)號：X788 文獻標識碼：A 文章編號：1009-9212（2020）01-0066-04 |
|
| Degradation of Simulated Dye Wastewater Basic Violet 16 by Glow Discharge Electrolytic Plasma |
| ZHAO Peng-fei, LI Min-rui
(School of Geography and Tourism, Shaanxi Normal University, Xi an 710119, China) |
| Abstract：The degradation process of basic violet 16 in simulated dye wastewater was studied using glow discharge electrolytic plasma (GDEP). Based on the analysis of the current and voltage curve, the causes of the variation trend in each stage were explored, and the glow discharge voltage was determined to be about 450 V. The decolorization rate of basic violet 16 at different degradation times was analyzed using a UV spectrophotometry. The results showed that under 600 V voltage, the decolorization rate of alkaline violet 16 at 20 mg·L-1 could reach 97.8% at 40 min, The entire degradation process was consistent with the characteristics of a first-order kinetic reaction. After the addition of 2 g·L-1 FeCl2, which promoted the generation rate of HO· and the decolorization rate of 100 mg·L-1 basic violet 16 reach 95.4% at 40 min was achieved. Under the degradation of basic violet 16 by GDEP, through the destruction of the conjugated structure, the opening ring of the five-element nitrogen heterocyclic ring in the indole-like structure of the chromophobe was finally mineralized into CO2 and H2O, where HO· played a key role. |
| Key words：glow discharge electrolytic plasma(GDEP); hydroxyl radical; Fenton reaction; decolourization ratio |
|
基金項目：中央高技基本科研業(yè)務(wù)費項目（GK201703044，GK201302034，GK201802018），陜西師范大學(xué)2017實(shí)驗技術(shù)研究項目（SYJS201723）。
|
作者簡(jiǎn)介：趙鵬飛（1993-），男，山西忻州人，碩士研究生，研究方向：輝光放電等離子體降解染料廢水（E-mail：1581145272@qq.com）。
|
收稿日期：2020-02-12
|
|