POTENTIOMETRIC QUANTIFICATION AND SPECIATION OF OXYGENATED GROUPS IN HUMIC SUBSTANCES USING BEST7 SOFTWARE

Autor: Denise de Oliveira Vaz, Andreia Neves Fernandes, Bruno Szpoganicz, Maria Marta de Souza Sierra

Publikováno v: Eclética Química, Vol 35, Iss 4, Pp 147-152 (2018)

In this study the BEST7 software was employed to quantify different classes of functional groups and to model the proton titration behavior of humic substances. To illustrate the process, the Suwannee River fulvic acid of the IHSS (International Humi

Externí odkaz: https://doaj.org/article/44f2a1997b584a2ca0b60b32ac6c8716

Isotherm and thermodynamic data of adsorption of methylene blue from aqueous solution onto peat

Autor: Andreia Fernandes, Carlos Alberto Policiano Almeida, Nito Angelo Debacher, Maria Marta de Souza Sierra

Publikováno v: Journal of Molecular Structure. 982:62-65

In this study, the adsorption capacity of peat relative to methylene blue (MB) was evaluated to test its application in textile wastewater treatment. Adsorption was conducted using varied initial concentrations of MB solutions at three different temp

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ebc2ef4fb9b4914f93dfe978c1ab9171
https://doi.org/10.1016/j.molstruc.2010.08.006

Potentiometric quantification and speciation of oxygenated groups in humic substances using BEST7 software

Autor: Bruno Szpoganicz, Andreia Fernandes, Denise de Oliveira Vaz, Maria Marta de Souza Sierra

Publikováno v: Eclética Química, Volume: 35, Issue: 4, Pages: 147-152, Published: 2010
Eclética Química, Vol 35, Iss 4, Pp 147-152 (2018)
Eclética Química, Vol 35, Iss 4, Pp 147-152 (2010)
Eclética Química v.35 n.4 2010
Eclética Química
Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)
instacron:UNESP

In this study the BEST7 software was employed to quantify different classes of functional groups and to model the proton titration behavior of humic substances. To illustrate the process, the Suwannee River fulvic acid of the IHSS (International Humi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa20e897708c0294c827ae8e2e734ad2
https://doi.org/10.1590/s0100-46702010000400019

Tensoatividade de ácidos húmicos de procedências distintas

Autor: Eduardo Juan Soriano Sierra, Nito Ângelo Debacher, Thalita Grando Rauen, Maria Marta de Souza Sierra

Publikováno v: Química Nova, Vol 25, Iss 6a, Pp 909-913 (2002)
Química Nova, Volume: 25, Issue: 6a, Pages: 909-913, Published: NOV 2002

The surface activity of humic acids (HA) is a parameter which might be considered in the evaluation of all types of aggregation of these substances. In this work the surface tension of aquatic and terrestrial-HA aqueous solutions was observed under v

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8380f6bcfbaaa752e0d22577bc3b513
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422002000600005

Remoção dos hormônios 17β-estradiol e 17α-etinilestradiol de soluções aquosas empregando turfa decomposta como material adsorvente

Autor: Marco Grassi, Valdemar I. Esteves, Maria Marta de Souza Sierra, Marcelo Giovanela, Andreia Fernandes, Carlos Alberto Policiano Almeida

Publikováno v: Química Nova v.34 n.9 2011
Química Nova
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Química Nova, Volume: 34, Issue: 9, Pages: 1526-1533, Published: SEP 2011
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Química Nova, Vol 34, Iss 9, Pp 1526-1533 (2011)

This paper describes the adsorption of 17β-estradiol (E2) and 17α-ethinylestradiol (EE2) from aqueous solution by decomposed peat. The peat presented a good adsorption process, close to 76.2% for E2 removal and approximately 55.0% for EE2. Moreover

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7783f9baaadabda0da4a8b93b96ff375
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422011000900009