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        抗生素的高級(jí)氧化降解工藝與機(jī)理研究進(jìn)展165符荷花,陳猛 熊小京(165)

        2014-11-28 13:43:15
        綠色科技 2014年10期

        摘要:介紹了高級(jí)氧化抗生素廢水處理工藝,并綜述了常見類型抗生素(β-內(nèi)酰胺類、磺胺類、大環(huán)內(nèi)酯類、喹諾酮類)的降解機(jī)理。

        關(guān)鍵詞:抗生素廢水;高級(jí)氧化工藝;降解機(jī)理

        中圖分類號(hào):X703.1文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):16749944(2014)10016504

        1引言

        抗生素廣泛存在于抗生素生產(chǎn)廢水、醫(yī)院廢水[1~3] 、城市污水處理廠[4, 5]、養(yǎng)殖廢水、地表水[2, 6]、飲用水[2, 3]及土壤[7]中,其殘留水平從ng/L到μg/L,檢出的抗生素包括β-內(nèi)酰胺類、磺胺類、大環(huán)內(nèi)酯類、氟喹諾酮類、四環(huán)素類、林可胺類等??股厣a(chǎn)廢水、醫(yī)院廢水、養(yǎng)殖廢水和生活污水是抗生素的主要環(huán)境污染源??股貙偕镫y降解物質(zhì)[8, 9],可長期殘留在環(huán)境中,對(duì)生態(tài)環(huán)境與人居的危害有:①引起微生物耐藥性[10];②影響水生生物生長和繁殖[11, 12];③影響植物生長[13, 14];④影響人類健康。我國是抗生素生產(chǎn)和使用大國,因此,抗生素污染控制技術(shù)研究與應(yīng)用已成為當(dāng)前環(huán)保領(lǐng)域的熱點(diǎn)。

        本文系統(tǒng)介紹常用的高級(jí)氧化抗生素處理工藝,并根據(jù)抗生素不同分類,對(duì)近年β-內(nèi)酰胺類、磺胺類、大環(huán)內(nèi)酯類、喹諾酮類抗生素高級(jí)氧化降解機(jī)理的研究進(jìn)展進(jìn)行綜述。

        2抗生素高級(jí)氧化處理工藝研究

        4結(jié)論

        臭氧氧化和各種Fenton氧化工藝對(duì)抗生素去除效果較高,可作為處理抗生素廢水的首選。高級(jí)氧化對(duì)青霉素類降解途徑主要分為內(nèi)酰胺環(huán)開環(huán)和羥基化(苯環(huán)位置)兩種;對(duì)磺胺類經(jīng)降解最終生成SO42-、NO3-、NH4+、CO2及其他難降解中間產(chǎn)物;對(duì)喹諾酮類降解包括羧酸鍵斷裂、與哌嗪基連接乙基斷裂、環(huán)丙基和氟鍵斷裂、哌嗪環(huán)開環(huán)等。

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        [22] Fan X., Hao H., Shen X., et al. Removal and degradation pathway study of sulfasalazine with Fenton-like reaction[J]. Journal of Hazardous Materials, 2011, 190(1): 493~500.

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        [24] Elmolla E., Chaudhuri M. Optimization of Fenton process for treatment of amoxicillin, ampicillin and cloxacillin antibiotics in aqueous solution[J]. Journal of hazardous materials, 2009, 170(2): 666~672.

        [25] Klauson D., Babkina J.,Stepanova K., et al. Aqueous photocatalytic oxidation of amoxicillin[J]. Catalysis Today, 2010, 151(1): 39~45.

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        [31] An T.,Yang H.,Li G., et al. Kinetics and mechanism of advanced oxidation processes (AOPs) in degradation of ciprofloxacin in water[J]. Applied Catalysis B-Environmental, 2010, 94(3-4): 288~294.

        [32] Li Y., Niu J.,Wang W. Photolysis of Enrofloxacin in aqueous systems under simulated sunlight irradiation: Kinetics, mechanism and toxicity of photolysis products[J]. Chemosphere, 2011, 85(5): 892~897.endprint

        [22] Fan X., Hao H., Shen X., et al. Removal and degradation pathway study of sulfasalazine with Fenton-like reaction[J]. Journal of Hazardous Materials, 2011, 190(1): 493~500.

        [23] Dirany A., Sirés I., Oturan N., et al. Electrochemical abatement of the antibiotic sulfamethoxazole from water[J]. Chemosphere, 2010, 81(5): 594~602.

        [24] Elmolla E., Chaudhuri M. Optimization of Fenton process for treatment of amoxicillin, ampicillin and cloxacillin antibiotics in aqueous solution[J]. Journal of hazardous materials, 2009, 170(2): 666~672.

        [25] Klauson D., Babkina J.,Stepanova K., et al. Aqueous photocatalytic oxidation of amoxicillin[J]. Catalysis Today, 2010, 151(1): 39~45.

        [26] Trovo A.G., Nogueira R.F.P., Aguera A., et al. Degradation of the antibiotic amoxicillin by photo-Fenton process - Chemical and toxicological assessment[J]. Water Research, 2011, 45(3): 1394~1402.

        [27] Calza P. Photocatalytic transformations of sulphonamides on titanium dioxide[J]. Applied Catalysis B: Environmental, 2004, 53(1): 63~69.

        [28] Trovó A.G.,Nogueira R.F.P.,Agüera A., et al. Degradation of sulfamethoxazole in water by solar photo-Fenton. Chemical and toxicological evaluation[J]. Water Research, 2009, 43(16): 3922~3931.

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        [30] Tong L.,Eichhorn P.,Perez S., et al. Photodegradation of azithromycin in various aqueous systems under simulated and natural solar radiation: Kinetics and identification of photoproducts[J]. Chemosphere, 2011, 83(3): 340~348.

        [31] An T.,Yang H.,Li G., et al. Kinetics and mechanism of advanced oxidation processes (AOPs) in degradation of ciprofloxacin in water[J]. Applied Catalysis B-Environmental, 2010, 94(3-4): 288~294.

        [32] Li Y., Niu J.,Wang W. Photolysis of Enrofloxacin in aqueous systems under simulated sunlight irradiation: Kinetics, mechanism and toxicity of photolysis products[J]. Chemosphere, 2011, 85(5): 892~897.endprint

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