ZH型重金属螯合纤维对水溶液中Sr~(2+)的吸附行为
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摘要
研究了ZH型重金属螯合纤维对水溶液中Sr~(2+)的吸附行为,考察了pH值、纤维加入量、Sr~(2+)初始浓度、作用时间等对吸附行为的影响,并采用SEM、EDS和FTIR等现代分析测试手段探讨了ZH型重金属螯合纤维对Sr~(2+)的吸附机制。结果表明,在pH值为7.0、纤维加入量为2.0 g/L、Sr~(2+)初始质量浓度为50 mg/L的条件下,纤维对Sr~(2+)的吸附在4 h左右基本达到平衡。实验条件下ZH型重金属螯合纤维对Sr~(2+)的最大吸附量可达26.22 mg/g。等温吸附拟合结果表明,ZH型重金属螯合纤维对Sr~(2+)的吸附可能是以单分子层为主的单分子层和多分子层吸附共同作用的结果。纤维对Sr~(2+)的动力学吸附过程符合准二级动力学模型。红外光谱分析表明Sr~(2+)与纤维上—NH_2和—COOH等基团进行配位络合从而吸附在纤维表面,—CH_2—和C=CH_2等基团参与此吸附过程。能谱分析表明Sr~(2+)与纤维上Na~+和Ca~(2+)还存在着离子交换作用。
The adsorption of strontium from aqueous solution with heavy metal chelate fiber was studied. The effects of several experimental parameters such as p H, dosage, temperature, contact time and initial concentration of strontium on adsorption efficiency of strontium were investigated. The adsorption mechanism of strontium ions by ZH heavy metal chelating fiber was discussed by contemporary analytical testing methods such as SEM, SEM-EDS and FTIR analysis. The results indicated that, under the conditions pH = 7. 0, biomass dose = 2. 0 g/L, the initial concentration of strontium ions = 50. 0 mg/L, and adsorption time = 4 h, the fibers exhibited the best biosorption capacities. The biosorption equilibrium indicated that the process was mainly based on monolayer adsorption combined with multi-molecular layer adsorption. The results indicated that the maximum adsorption capacity of Sr~(2+) by ZH heavy metal chelating fiber was 26. 22 mg/g. The equilibrium sorption capacity of strontium was determined from the Langmuir equation, and the dynamic adsorption process conformed to the secondary dynamic model. FTIR analysis found that Sr~(2+)was coordinated to —NH_2 and —COOH on the surface of fibers, and —CH_2— and C=CH_2 were involved in the adsorption. DES analysis indicated that there was ion exchange between Sr~(2+) and Na~+, Ca~(2+) on fibers.
The adsorption of strontium from aqueous solution with heavy metal chelate fiber was studied. The effects of several experimental parameters such as p H, dosage, temperature, contact time and initial concentration of strontium on adsorption efficiency of strontium were investigated. The adsorption mechanism of strontium ions by ZH heavy metal chelating fiber was discussed by contemporary analytical testing methods such as SEM, SEM-EDS and FTIR analysis. The results indicated that, under the conditions pH = 7. 0, biomass dose = 2. 0 g/L, the initial concentration of strontium ions = 50. 0 mg/L, and adsorption time = 4 h, the fibers exhibited the best biosorption capacities. The biosorption equilibrium indicated that the process was mainly based on monolayer adsorption combined with multi-molecular layer adsorption. The results indicated that the maximum adsorption capacity of Sr~(2+) by ZH heavy metal chelating fiber was 26. 22 mg/g. The equilibrium sorption capacity of strontium was determined from the Langmuir equation, and the dynamic adsorption process conformed to the secondary dynamic model. FTIR analysis found that Sr~(2+)was coordinated to —NH_2 and —COOH on the surface of fibers, and —CH_2— and C=CH_2 were involved in the adsorption. DES analysis indicated that there was ion exchange between Sr~(2+) and Na~+, Ca~(2+) on fibers.
引文
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王燕霞,杜兆林,郑彤,等.2015.改性黄麻制备及其对铜离子的吸附[J].环境工程学报,9(4):1 593~1 598.
薛文平,姚文君,李世成,等.2015.不同炭化材料和碳纤维对水中重金属Cu2+的吸附研究[J].黄金,(1):63~66.
尹兴荣,刘广义,喻名强,等.2011.偕胺肟基螯合纤维的研究进展[J].合成纤维工业,34(6):28~33.
张伟,董发勤,覃贻琳,等.2015.灭活酿酒酵母菌对U(Ⅵ)的吸附行为及减量化研究[J].功能材料,(23):23 064~23 070.
Dai Libo,Zhou Congzhang and Yuan Siguo.2012.Cr(VI)adsorption properties of weak alkaline ion exchange fiber[J].Journal of Chemical Engineering of Chinese Universities,194(5):92~99(in Chinese).
Fu F and Wang Q.2011.Removal of heavy metal ions from wastewaters:A review[J].Journal of Environmental Management,92(3):407~418.
Hajiaghababaei L,Abozari S,Badiei A,et al.2017.Amino ethyl-functionalized Sba-15:A promising adsorbent for anionic and cationic dyes removal[J].Iranian Journal of Chemistry&Chemical Engineering-International English Edition,36(1):97~108.
Hong H S,Jung H and Hong S J.2010.Recycling of the indium scrap from ITO sputtering waste[J].Research on Chemical Intermediates,36(6):761~766.
Huang Yuanqing,Yang Chunping,Sun Zhichao,et al.2016.Adsorption of Cd2+by NTA anhydride(NTAA)-modified cellulose materials[J].Acta Scientiae Circumstantiae,35(6):1 792~1 799(in Chinese).
Luo Xin.2014.Research process in the strontium removal from radioactive wastewater[J].Journal of North China Institute of Science and Technology,(3):72~76(in Chinese).
Qin Yilin.2017.Research on Deep Purification Wastewater Treatment which Contains Uranium Fluoride[D].Southwest University of Science and Technology(in Chinese).
Rahman R O A,Ibrahim H A,Hanafy M,et al.2010.Assessment of synthetic zeolite Na A-X as sorbing barrier for strontium in a radioactive disposal facility[J].Chemical Engineering Journal,157(1):100~112.
Sepehrian H,Ahmadi S J,Waqifhusain S,et al.2010.Adsorption studies of heavy metal ions on mesoporous aluminosilicate,novel cation exchanger[J].Journal of Hazardous Materials,176(1):252~256.
Sun Yaoran,Li Mingyu,Zeng Qingxuan,et al.2012.The application of new chelating fibers in the enrichment of metal ions[J].Journal of Functional Materials,43(9):1 089~1 094(in Chinese).
Tan S H,Chen X G,Ye Y,et al.2010.Hydrothermal removal of Sr2+in aqueous solution via formation of Sr-substituted hydroxyapatite[J].Journal of Hazardous Materials,179(1):559~563.
Wang Bin,Zhang Fan,Wang Jiaona,et al.2016.Amidoxime-modified polyacrylonitrile nanofibers and application to Cr(Ⅵ)ions adsorption[J].Acta Polymerica Sinica,26(4):674~678(in Chinese).
Wang J,Xu L,Cheng C,et al.2012.Preparation of new chelating fiber with waste PET as adsorbent for fast removal of Cu2+,and Ni2+,from water:Kinetic and equilibrium adsorption studies[J].Chemical Engineering Journal,193~194(25):31~38.
Wang Ping,LüCaixia,Sheng Qing,et al.2016.Research development of uranium-containing wastewater treatment technologies[J].Modern Chemical Industry,(12):23~27(in Chinese).
Wang Xinghui.2013.Preparation of Amidoxime-functionalized Mesoporous Silica and Its Adsorption Properties of Uranium[D].Ocean University of China(in Chinese).
Wang Yanxia,Du Zhaolin,Zheng Tong,et al.2015.Modification of jute and its adsorption behavior for copper ions[J].Chinese Journal of Environmental Engineering,9(4):1 593~1 598(in Chinese).
Xue Wenping,Yao Wenjun,Li Shicheng,et al.2015.Research on adsorption of Cu2+in water with different carbonized materials and carbon fibers[J].Gold,(1):63~66(in Chinese).
Yin Xingrong,Liu Guangyi,Yu Mingqiang,et al.2011.Research progress in amidoxime chelate fiber[J].China Synthetic Fiber Industry,34(6):28~33(in Chinese).
Young G K,Yong J C,Choong H K,et al.2011.Removal of Cu(Ⅱ)and Cr(Ⅵ)ions from aqueous solution using chelating fiber packed column:Equilibrium and kinetic studies[J].Journal of Hazardous Materials,194(5):92~99.
Younjin P,Youngchae L,Wonsik S,et al.2010.Removal of cobalt,strontium and cesium from radioactive laundry wastewater by ammonium molybdophosphate-polyacrylonitrile(AMP-PAN)[J].Chemical Engineering Journal,162(2):685~695.
Zhang Wei,Dong Faqin,Qin Yilin,et al.2015.Study on adsorption of uranium by inactivated Saccharomyces cerevisiae and volume reduction[J].Journal of Functional Materials,(23):23 064~23 070(in Chinese).
代立波,周从章,原思国.2012.弱碱性离子交换纤维对六价铬吸附性能的研究[J].高校化学工程学报,26(4):674~678.
黄沅清,杨春平,孙志超,等.2015.氨三乙酸酐改性纤维素对Cd2+的吸附性能[J].环境科学学报,35(6):1 792~1 799.
骆欣.2014.含锶放射性废水的处理方法研究进展[J].华北科技学院学报,(3):72~76.
孙耀冉,李明愉,曾庆轩,等.2012.新型螯合纤维在金属离子富集分离中的应用[J].功能材料,43(9):1 089~1 094.
覃贻琳.2017.含氟、铀废水深度净化处理方法研究[D].西南科技大学.
汪滨,张凡,王娇娜,等.2016.偕胺肟化PAN纳米纤维膜除铬性能的研究[J].高分子学报,(8):1 105~1 111.
汪萍,吕彩霞,盛青,等.2016.含铀废水处理技术的研究进展[J].现代化工,(12):23~27.
王兴慧.2013.偕胺肟基官能化介孔二氧化硅的制备及其对铀的吸附性能研究[D].中国海洋大学.
王燕霞,杜兆林,郑彤,等.2015.改性黄麻制备及其对铜离子的吸附[J].环境工程学报,9(4):1 593~1 598.
薛文平,姚文君,李世成,等.2015.不同炭化材料和碳纤维对水中重金属Cu2+的吸附研究[J].黄金,(1):63~66.
尹兴荣,刘广义,喻名强,等.2011.偕胺肟基螯合纤维的研究进展[J].合成纤维工业,34(6):28~33.
张伟,董发勤,覃贻琳,等.2015.灭活酿酒酵母菌对U(Ⅵ)的吸附行为及减量化研究[J].功能材料,(23):23 064~23 070.