石墨烯/TiO_2处理盐酸土霉素模拟抗生素废水研究
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摘要
用溶胶凝胶和水热方法合成了TiO_2和石墨烯的复合材料,对模拟制药废水进行了光催化氧化处理的研究.以盐酸土霉素模拟抗生素废水,对复合材料的光催化性能进行测试,进行了单因素实验,确定最佳处理抗生素制药废水的工艺条件.实验表明,催化剂投加量为10 mg、盐酸土霉素溶液质量浓度为20 mg/m L、反应时间为0.5 h时,光催化降解效果最好,可以达到82.53%.
In this paper,TiO_2 and graphene composites was synthesized by sol- gel and hydrothermal method,and used as the catalyst for interpretation of pharmaceutical waste- water. Using antibiotic waste- water,oxytetracycline hydrochloride simulation to test the photocatalytic performance of the material,single factor experiment were taken so as to determine the best process conditions of antibiotic pharmaceutical waste- water treatment. Experiments showed that the best properties of degradation could be achieved with the catalyst dosing amount of 10 mg,oxytetracycline hydrochloride solution concentration of 20 mg / m L,reaction time of 0. 5 h.
In this paper,TiO_2 and graphene composites was synthesized by sol- gel and hydrothermal method,and used as the catalyst for interpretation of pharmaceutical waste- water. Using antibiotic waste- water,oxytetracycline hydrochloride simulation to test the photocatalytic performance of the material,single factor experiment were taken so as to determine the best process conditions of antibiotic pharmaceutical waste- water treatment. Experiments showed that the best properties of degradation could be achieved with the catalyst dosing amount of 10 mg,oxytetracycline hydrochloride solution concentration of 20 mg / m L,reaction time of 0. 5 h.
引文
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[2]杨军,陆正禹,胡纪萃,等.抗生素工业废水生物处理技术的现状与展望[J].环境科学,1997,18(3):83.
[3]马文鑫,陈卫中,任建军,等.制药废水预处理技术探索[J].环境污染与防治,2001,23(2):87-89.
[4]张满生,章劲松.物理吸附法处理制药废水[J].青海环境,1999,33(3):106-107.
[5]买文宁,曾科,何争光.抗生素废水处理的中试研究[J].郑州大学学报:工学版,2002,23(2):16-19.
[6]迟娟,黄全辉,李敏哲,等.内电解-MBR工艺处理制药废水的研究[J].工业水处理,2006,26(1):26-29.
[7]周娅.制备Ti O2/Fe2O3/CNTs复合磁性光催化剂及光催化降解四环素类抗生素[D].西安:长安大学,2013.
[8]李志林,安青珍,郝永亮.凹凸棒土负载氧化锌-二氧化钛的制备与性能[J].无机盐工业,2011,43(1):33-35.
[9]WANG J,JIANG Z.Sonocatalytic degradation of some dyestuffs and comparison of catalytic activities of nano-sized Ti O2,nano-sized Zn O and composite Ti O2/Zn O powders under ultrasonic irradiation[J].Ultrasonics Sonochemistry,2009,16:225-231.
[10]ANPO M,TAKEUCHI M.The design and development of highly reactive titanium oxide photocatalysts operating under visible light irradiation[J].J Catal,2003,216:505-516.
[11]SU W,Y ZHANG,LI Z,et al.Multivalency iodine doped Ti O2:preparation,characterization,theoretical studies,and visible-light phoocatalysis[J].Langmuir,2008,24:3422-3428.
[12]杨胜韬,赵连勤.石墨烯吸附材料的制备与应用研究进展[J].西南民族大学学报:自然科学版,2014,02:11-16.
[13]YU B,XU J,LIU J H,et al.Adsorption behavior of copper ions on graphene oxide–chitosan aerogel[J].Journal of Environmental Chemical Engineering,2013,1(4):1044-1050.
[14]ROBINSON J T,PERKINS F K,SNOW E S.Reduced graphene oxide molecular sensors[J].Nano Lett.,2008,8:3137-3140.
[15]SUNDARAM R S,GOMEZ-NAVARRO C,BALASUBRAMANIAN K.Electrochemical modification of grapheme[J].Adv Mater,2008,20:3050-3053.
[16]CHEN D,FENG H,LI J.Graphene oxide:preparation,functionalization,and electrochemical applications[J].Chem Rev,2012,112:6027-6053.
[17]HUMMERS W S,OFFEMAN R E.Preparation of graphitic oxide[J].J Am Chem Soc,1958,80:1339-1339.
[18]CAO X,TIAN G,CHEN Y,et al.Hierarchical composites of Ti O2nanowire arrays on reduced graphene oxide nanosheets with enhanced photocatalytic hydrogen evolution performance[J].J Mater Chem A,2014,2:4366-4374.
[19]ZHOU J,TIAN G,CHEN Y,et al.Synthesis of hierarchical Ti O2 nanoflower with anatase–rutile heterojunction as Ag support for efficient visible-light photocatalytic activity[J].Dalton Trans,2013,42:11242-11251.
[20]TIAN G H,JING L Q,FU H G,et al.Synthesis and Photocatalytic Activity of Stable Nanocrystalline Ti O2with High Crystallinity and Large Surface Area[J].J Hazard Mater,2009,161:1122-1130.