TRATAMENTO ELETROQUÍMICO DE EFLUENTE DA PRODUÇÃO DE BIODIESEL USANDO UM ELETRODO DO TIPO ADE: Ti/IrO2-Nb2O5
This work presents the electrochemical treatment of wastewater of biodiesel production, using DSA based on IrO2 and Nb2O5. The anode was prepared by modified Pechini method and characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), in order to evaluate structural and morpho...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
|
| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422018000100017&lng=en&tlng=en |
| _version_ | 1811326617423708160 |
|---|---|
| author | Carlos H. M. Fernandes Marcelo M. Yamasaki Fernando L. Silva Vanessa M. Vasconcelos Robson S. Rocha Marcos R. V. Lanza Marilza Castilho Evandro L. Dall'Óglio Ailton J. Terezo |
| author_facet | Carlos H. M. Fernandes Marcelo M. Yamasaki Fernando L. Silva Vanessa M. Vasconcelos Robson S. Rocha Marcos R. V. Lanza Marilza Castilho Evandro L. Dall'Óglio Ailton J. Terezo |
| author_sort | Carlos H. M. Fernandes |
| collection | DOAJ |
| description | This work presents the electrochemical treatment of wastewater of biodiesel production, using DSA based on IrO2 and Nb2O5. The anode was prepared by modified Pechini method and characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), in order to evaluate structural and morphological properties and by electrochemical impedance spectroscopy, cyclic voltammetry and accelerated stability test to investigate the electrochemical behavior. The SEM image shows the typical mud-cracked layer. By the XRD measurements, the oxides onto the support were crystallized as tetragonal IrO2 and hexagonal Nb2O5. The amount of glycerin and methanol in the wastewater were 1.60 and 0.31% (w/w), respectively. The electrochemical treatment of the wastewater was evaluated by electrolysis at different current densities and time. The total organic carbon (TOC) and UV-Vis spectra were performed during the electrolysis. The UV-Vis spectra obtained during the electrolysis at 100 and 150 mA cm-2, shows the disappearance of an absorption band at 264 nm and the appearance of one at 290 nm, which the absorption increases as current and the time of the electrolysis increases. The electrochemical treatment with the proposed DSA leads to 80% of removal of TOC by electrolysis at 150 mA cm-2 during the first 6 hours of the electrochemical treatment. |
| first_indexed | 2024-04-13T14:53:01Z |
| format | Article |
| id | doaj.art-fe56ad7b97364421a44ed0b6a1311dd5 |
| institution | Directory Open Access Journal |
| issn | 1678-7064 |
| language | English |
| last_indexed | 2024-04-13T14:53:01Z |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-fe56ad7b97364421a44ed0b6a1311dd52022-12-22T02:42:33ZengSociedade Brasileira de QuímicaQuímica Nova1678-7064411172210.21577/0100-4042.20170163S0100-40422018000100017TRATAMENTO ELETROQUÍMICO DE EFLUENTE DA PRODUÇÃO DE BIODIESEL USANDO UM ELETRODO DO TIPO ADE: Ti/IrO2-Nb2O5Carlos H. M. FernandesMarcelo M. YamasakiFernando L. SilvaVanessa M. VasconcelosRobson S. RochaMarcos R. V. LanzaMarilza CastilhoEvandro L. Dall'ÓglioAilton J. TerezoThis work presents the electrochemical treatment of wastewater of biodiesel production, using DSA based on IrO2 and Nb2O5. The anode was prepared by modified Pechini method and characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), in order to evaluate structural and morphological properties and by electrochemical impedance spectroscopy, cyclic voltammetry and accelerated stability test to investigate the electrochemical behavior. The SEM image shows the typical mud-cracked layer. By the XRD measurements, the oxides onto the support were crystallized as tetragonal IrO2 and hexagonal Nb2O5. The amount of glycerin and methanol in the wastewater were 1.60 and 0.31% (w/w), respectively. The electrochemical treatment of the wastewater was evaluated by electrolysis at different current densities and time. The total organic carbon (TOC) and UV-Vis spectra were performed during the electrolysis. The UV-Vis spectra obtained during the electrolysis at 100 and 150 mA cm-2, shows the disappearance of an absorption band at 264 nm and the appearance of one at 290 nm, which the absorption increases as current and the time of the electrolysis increases. The electrochemical treatment with the proposed DSA leads to 80% of removal of TOC by electrolysis at 150 mA cm-2 during the first 6 hours of the electrochemical treatment.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422018000100017&lng=en&tlng=enbiodieselwastewaterelectrochemical treatmentDSA |
| spellingShingle | Carlos H. M. Fernandes Marcelo M. Yamasaki Fernando L. Silva Vanessa M. Vasconcelos Robson S. Rocha Marcos R. V. Lanza Marilza Castilho Evandro L. Dall'Óglio Ailton J. Terezo TRATAMENTO ELETROQUÍMICO DE EFLUENTE DA PRODUÇÃO DE BIODIESEL USANDO UM ELETRODO DO TIPO ADE: Ti/IrO2-Nb2O5 Química Nova biodiesel wastewater electrochemical treatment DSA |
| title | TRATAMENTO ELETROQUÍMICO DE EFLUENTE DA PRODUÇÃO DE BIODIESEL USANDO UM ELETRODO DO TIPO ADE: Ti/IrO2-Nb2O5 |
| title_full | TRATAMENTO ELETROQUÍMICO DE EFLUENTE DA PRODUÇÃO DE BIODIESEL USANDO UM ELETRODO DO TIPO ADE: Ti/IrO2-Nb2O5 |
| title_fullStr | TRATAMENTO ELETROQUÍMICO DE EFLUENTE DA PRODUÇÃO DE BIODIESEL USANDO UM ELETRODO DO TIPO ADE: Ti/IrO2-Nb2O5 |
| title_full_unstemmed | TRATAMENTO ELETROQUÍMICO DE EFLUENTE DA PRODUÇÃO DE BIODIESEL USANDO UM ELETRODO DO TIPO ADE: Ti/IrO2-Nb2O5 |
| title_short | TRATAMENTO ELETROQUÍMICO DE EFLUENTE DA PRODUÇÃO DE BIODIESEL USANDO UM ELETRODO DO TIPO ADE: Ti/IrO2-Nb2O5 |
| title_sort | tratamento eletroquimico de efluente da producao de biodiesel usando um eletrodo do tipo ade ti iro2 nb2o5 |
| topic | biodiesel wastewater electrochemical treatment DSA |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422018000100017&lng=en&tlng=en |
| work_keys_str_mv | AT carloshmfernandes tratamentoeletroquimicodeefluentedaproducaodebiodieselusandoumeletrododotipoadetiiro2nb2o5 AT marcelomyamasaki tratamentoeletroquimicodeefluentedaproducaodebiodieselusandoumeletrododotipoadetiiro2nb2o5 AT fernandolsilva tratamentoeletroquimicodeefluentedaproducaodebiodieselusandoumeletrododotipoadetiiro2nb2o5 AT vanessamvasconcelos tratamentoeletroquimicodeefluentedaproducaodebiodieselusandoumeletrododotipoadetiiro2nb2o5 AT robsonsrocha tratamentoeletroquimicodeefluentedaproducaodebiodieselusandoumeletrododotipoadetiiro2nb2o5 AT marcosrvlanza tratamentoeletroquimicodeefluentedaproducaodebiodieselusandoumeletrododotipoadetiiro2nb2o5 AT marilzacastilho tratamentoeletroquimicodeefluentedaproducaodebiodieselusandoumeletrododotipoadetiiro2nb2o5 AT evandroldalloglio tratamentoeletroquimicodeefluentedaproducaodebiodieselusandoumeletrododotipoadetiiro2nb2o5 AT ailtonjterezo tratamentoeletroquimicodeefluentedaproducaodebiodieselusandoumeletrododotipoadetiiro2nb2o5 |