A simple and fast method to determine water content in biodiesel by electrochemical impedance spectroscopy
Main Author: | |
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Publication Date: | 2018 |
Other Authors: | , , , , , , |
Format: | Article |
Language: | eng |
Source: | Repositório Institucional da UNESP |
Download full: | http://dx.doi.org/10.1016/j.talanta.2017.11.053 http://hdl.handle.net/11449/160064 |
Summary: | In this paper, a fast, simple and new alternative method for determination of water content (moisture) in biodiesel using electrochemical impedance spectroscopy (EIS) is developed. The method is based on the sensitive variation of the charge transfer resistance (R-ct) of the biodiesel medium in the presence of different quantities of water. To obtain an accurate analytical measurement, a pre-treatment based on a simple dilution by acetonitrile is employed. The two identical Pt electrodes are used in the measurement cell filled with sample solution. The experiment conditions are also optimized for the measurements. The obtained analytical linear curve between the water content and EIS impedance is the basis for the water content analysis in biodesiel fuel. The EIS method is then successfully applied to both real and certified samples, and the results confirm that the method is reliable with high sensitivity, precision and accuracy. The comparison of EIS method with the official standard method is also made through the Student test t, demonstrating that both methods are statistically consistent and similars. The validation of such an EIS method confirms that the method presented for the fist time in this paper can be succesessfully applied to determining the water content of biodiesel fuel. |
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A simple and fast method to determine water content in biodiesel by electrochemical impedance spectroscopyWater contentElectrochemical impedance spectroscopyBiodieselIn this paper, a fast, simple and new alternative method for determination of water content (moisture) in biodiesel using electrochemical impedance spectroscopy (EIS) is developed. The method is based on the sensitive variation of the charge transfer resistance (R-ct) of the biodiesel medium in the presence of different quantities of water. To obtain an accurate analytical measurement, a pre-treatment based on a simple dilution by acetonitrile is employed. The two identical Pt electrodes are used in the measurement cell filled with sample solution. The experiment conditions are also optimized for the measurements. The obtained analytical linear curve between the water content and EIS impedance is the basis for the water content analysis in biodesiel fuel. The EIS method is then successfully applied to both real and certified samples, and the results confirm that the method is reliable with high sensitivity, precision and accuracy. The comparison of EIS method with the official standard method is also made through the Student test t, demonstrating that both methods are statistically consistent and similars. The validation of such an EIS method confirms that the method presented for the fist time in this paper can be succesessfully applied to determining the water content of biodiesel fuel.FAPEMAConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)ANPFINEPFed Univ Maranhao UFMA, Nucleus Studies Petr & Energy NEPE, LPQA, Ave Portugueses 1966, BR-65080040 Sao Luis, MA, BrazilSao Paulo State Univ Julio de Mesquita Filho, Inst Chem, BR-14801970 Araraquara, SP, BrazilShanghai Univ, Coll Sci, Shanghai 200444, Peoples R ChinaShanghai Univ, Inst Sustainable Energy, Shanghai 200444, Peoples R ChinaSao Paulo State Univ Julio de Mesquita Filho, Inst Chem, BR-14801970 Araraquara, SP, BrazilFAPEMA: UNIVERSAL-00799/14FAPEMA: INFRA-03578/13CNPq: 2014 - 4CNPq: PQ 2014ANP: 1,029 / 2016-ANP-007,639FINEP: 2644/09FINEP: 0110078404FINEP: RECOL 05Elsevier B.V.Fed Univ Maranhao UFMAUniversidade Estadual Paulista (Unesp)Shanghai UnivDelfino, Jose RodriguesPereira, Thulio C.Costa Viegas, Helmara D.Marques, Edmar P.Pupim Ferreira, Antonio A. [UNESP]Zhang, LeiZhang, JiujunBrandes Marques, Aldalea L.2018-11-26T15:47:22Z2018-11-26T15:47:22Z2018-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article753-759application/pdfhttp://dx.doi.org/10.1016/j.talanta.2017.11.053Talanta. Amsterdam: Elsevier Science Bv, v. 179, p. 753-759, 2018.0039-9140http://hdl.handle.net/11449/16006410.1016/j.talanta.2017.11.053WOS:000424178000101WOS000424178000101.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengTalanta1,186info:eu-repo/semantics/openAccess2023-11-01T06:09:47Zoai:repositorio.unesp.br:11449/160064Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-01T06:09:47Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A simple and fast method to determine water content in biodiesel by electrochemical impedance spectroscopy |
title |
A simple and fast method to determine water content in biodiesel by electrochemical impedance spectroscopy |
spellingShingle |
A simple and fast method to determine water content in biodiesel by electrochemical impedance spectroscopy Delfino, Jose Rodrigues Water content Electrochemical impedance spectroscopy Biodiesel |
title_short |
A simple and fast method to determine water content in biodiesel by electrochemical impedance spectroscopy |
title_full |
A simple and fast method to determine water content in biodiesel by electrochemical impedance spectroscopy |
title_fullStr |
A simple and fast method to determine water content in biodiesel by electrochemical impedance spectroscopy |
title_full_unstemmed |
A simple and fast method to determine water content in biodiesel by electrochemical impedance spectroscopy |
title_sort |
A simple and fast method to determine water content in biodiesel by electrochemical impedance spectroscopy |
author |
Delfino, Jose Rodrigues |
author_facet |
Delfino, Jose Rodrigues Pereira, Thulio C. Costa Viegas, Helmara D. Marques, Edmar P. Pupim Ferreira, Antonio A. [UNESP] Zhang, Lei Zhang, Jiujun Brandes Marques, Aldalea L. |
author_role |
author |
author2 |
Pereira, Thulio C. Costa Viegas, Helmara D. Marques, Edmar P. Pupim Ferreira, Antonio A. [UNESP] Zhang, Lei Zhang, Jiujun Brandes Marques, Aldalea L. |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Fed Univ Maranhao UFMA Universidade Estadual Paulista (Unesp) Shanghai Univ |
dc.contributor.author.fl_str_mv |
Delfino, Jose Rodrigues Pereira, Thulio C. Costa Viegas, Helmara D. Marques, Edmar P. Pupim Ferreira, Antonio A. [UNESP] Zhang, Lei Zhang, Jiujun Brandes Marques, Aldalea L. |
dc.subject.por.fl_str_mv |
Water content Electrochemical impedance spectroscopy Biodiesel |
topic |
Water content Electrochemical impedance spectroscopy Biodiesel |
description |
In this paper, a fast, simple and new alternative method for determination of water content (moisture) in biodiesel using electrochemical impedance spectroscopy (EIS) is developed. The method is based on the sensitive variation of the charge transfer resistance (R-ct) of the biodiesel medium in the presence of different quantities of water. To obtain an accurate analytical measurement, a pre-treatment based on a simple dilution by acetonitrile is employed. The two identical Pt electrodes are used in the measurement cell filled with sample solution. The experiment conditions are also optimized for the measurements. The obtained analytical linear curve between the water content and EIS impedance is the basis for the water content analysis in biodesiel fuel. The EIS method is then successfully applied to both real and certified samples, and the results confirm that the method is reliable with high sensitivity, precision and accuracy. The comparison of EIS method with the official standard method is also made through the Student test t, demonstrating that both methods are statistically consistent and similars. The validation of such an EIS method confirms that the method presented for the fist time in this paper can be succesessfully applied to determining the water content of biodiesel fuel. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-26T15:47:22Z 2018-11-26T15:47:22Z 2018-03-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.talanta.2017.11.053 Talanta. Amsterdam: Elsevier Science Bv, v. 179, p. 753-759, 2018. 0039-9140 http://hdl.handle.net/11449/160064 10.1016/j.talanta.2017.11.053 WOS:000424178000101 WOS000424178000101.pdf |
url |
http://dx.doi.org/10.1016/j.talanta.2017.11.053 http://hdl.handle.net/11449/160064 |
identifier_str_mv |
Talanta. Amsterdam: Elsevier Science Bv, v. 179, p. 753-759, 2018. 0039-9140 10.1016/j.talanta.2017.11.053 WOS:000424178000101 WOS000424178000101.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Talanta 1,186 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
753-759 application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797789575871987712 |