Activated Carbon-Spinels Composites for Waste Water Treatment

被引:8
作者
de la Torre, Ernesto [1 ]
Belen Lozada, Ana [1 ]
Adatty, Maricarmen [1 ]
Gamez, Sebastian [1 ]
机构
[1] Escuela Politec Nacl, Dept Extract Met, Ladron de Guevara E11-253, Quito 170517, Ecuador
来源
METALS | 2018年 / 8卷 / 12期
关键词
copper ferrite; cobalt ferrite; activated carbon; cyanide oxidation; CATALYTIC-OXIDATION; CYANIDE;
D O I
10.3390/met8121070
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Nowadays, mining effluents have several contaminants that produce great damage to the environment, cyanide chief among them. Ferrites synthesized from transition metals have oxidative properties that can be used for cyanide oxidation due to their low solubility. In this study, cobalt and copper ferrites were synthesized via the precipitation method, using cobalt nitrate, copper nitrate, and iron nitrate as precursors in a molar ratio of Co or Cu:Fe = 1:2 and NaOH as the precipitating agent. The synthesized ferrites were impregnated in specific areas on active carbon. These composites were characterized using X-Ray Diffraction (XRD) and Scanning Electron Spectroscopy (SEM). The XRD results revealed a cubic spinel structure of ferrites with a single phase of cobalt ferrite and two phases (copper ferrite and copper oxides) for copper. The CoFe2O4 impregnated on active carbon reached a cyanide oxidation of 98% after 8 h of agitation; the composite could be recycled five times with an 18% decrease in the catalytic activity. In cobalt ferrites, a greater dissolution of iron than cobalt was obtained. In the case of copper ferrite, however, the copper dissolution was higher. These results confirm that ferrites and activated carbon composites are a novel alternative for cyanide treatment in mining effluents.
引用
收藏
页数:12
相关论文
共 29 条
  • [1] Copper phosphide and persulfate salt: A novel catalytic system for the degradation of aqueous phase micro-contaminants
    Alexopoulou, Charalampia
    Petala, Athanasia
    Frontistis, Zacharias
    Drivas, Charalampos
    Kennou, Stella
    Kondarides, Dimitris I.
    Mantzavinos, Dionissios
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 244 : 178 - 187
  • [2] [Anonymous], 2016, INT J LUMINES APPL
  • [3] Kinetics of polydopamine film deposition as a function of pH and dopamine concentration: Insights in the polydopamine deposition mechanism
    Ball, Vincent
    Del Frari, Doriane
    Toniazzo, Valerie
    Ruch, David
    [J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2012, 386 : 366 - 372
  • [4] Low-temperature iron-modified cobalt oxide system Part 2. Catalytic oxidation of phenol in aqueous phase
    Christoskova, S
    Stoyanova, M
    Georgieva, M
    [J]. APPLIED CATALYSIS A-GENERAL, 2001, 208 (1-2) : 243 - 249
  • [5] Catalytic oxidation of cyanides in an aqueous phase over individual and manganese-modified cobalt oxide systems
    Christoskova, St.
    Stoyanova, M.
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2009, 165 (1-3) : 690 - 695
  • [6] De la Torre Chauvin E., 2015, THESIS
  • [7] de la Torre E, 2018, WOODH PUB SER ELECT, P115, DOI 10.1016/B978-0-08-102057-9.00005-6
  • [8] Experiment and modeling for flux and permeate concentration of heavy metal ion in adsorptive membrane filtration using a metal-organic framework incorporated nanofibrous membrane
    Efome, Johnson E.
    Rana, Dipak
    Matsuura, Takeshi
    Lan, Christopher Q.
    [J]. CHEMICAL ENGINEERING JOURNAL, 2018, 352 : 737 - 744
  • [9] Insight Studies on Metal-Organic Framework Nanofibrous Membrane Adsorption and Activation for Heavy Metal Ions Removal from Aqueous Solution
    Efome, Johnson E.
    Rana, Dipak
    Matsuura, Takeshi
    Lan, Christopher Q.
    [J]. ACS APPLIED MATERIALS & INTERFACES, 2018, 10 (22) : 18619 - 18629
  • [10] Metal-organic frameworks supported on nanofibers to remove heavy metals
    Efome, Johnson E.
    Rana, Dipak
    Matsuura, Takeshi
    Lan, Christopher Q.
    [J]. JOURNAL OF MATERIALS CHEMISTRY A, 2018, 6 (10) : 4550 - 4555