Humic and fulvic acids from hydrochar and anthropogenics soils: complexation capacity and characterization using molecular fluorescence

• Grant number: 18/09914-9
• Support Opportunities: Scholarships abroad - Research Internship - Scientific Initiation
• Effective date (Start): December 01, 2018
• Effective date (End): February 28, 2019
• Field of knowledge: Physical Sciences and Mathematics - Chemistry
• Principal Investigator: Márcia Cristina Bisinoti
• Grantee: João Vitor dos Santos
• Supervisor: Jean Louis Stephane Mounier
• Host Institution: Instituto de Biociências, Letras e Ciências Exatas (IBILCE). Universidade Estadual Paulista (UNESP). Campus de São José do Rio Preto. São José do Rio Preto , SP, Brazil
• Research place: Université de Toulon (UTLN), France
• Associated to the scholarship: 17/05408-9 - Characterization of humic substances extracted from hydrochar and terra mulata soil from Amazon Region, BP.IC

Abstract

Hydrochars have been produced with by-products from the sugarcane industry, in which the nutrients and carbon content depends on the reaction conditions (time, temperature and additives). The presence of 'like' humic substances would provide properties such as those found in Terra Mulata soils, known for their high fertility. The MIO (Mediterranean Institut of Oceanography) research group at the University of Toulon-France is internationally recognized for the characterization of humic and fulvic acids by Molecular Fluorescence and data treatment using CP/PARAFAC, as well as the complexation capacity emploing quenching analysis and Time Resolved Fluorescence (TRF). The research group also makes use of the Nuclear Magnetic Resonance (NMR) technique to obtain information on the conformational characteristics of the carbon nuclei present in the sample. Considering the work already started in Brazil, this project aims the structural characterization of humic and fulvic acids extracted from Terra Mulata soils and from hydrochars produced in different conditions, as well as to determine the complexation capacity with copper and if it possible the interaction with Polycyclic Aromatic Hydrocarbon (PAH). The realization of these experiments under the supervision of Professor Dr. Stéphane Mounier, specialist in the proposed techniques, will facilitate the understanding and interpretation of results, allowing a comparison between the materials with the purpose of applying hydrochar as a soil conditioner. This intership will be a unique opportunity to generate unpublished data that will enable a better understanding of the material properties produced in comparison to the Terra Mulata soils, providing important information about the role of carbonization process conditions in the material humic characteristics. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DOS SANTOS, JOAO VITOR; FREGOLENTE, LAIS GOMES; MOREIRA, ALTAIR BENEDITO; FERREIRA, ODAIR PASTOR; MOUNIER, STEPHANE; VIGUIER, BRUNO; HAJJOUL, HOUSSAM; BISINOTI, MARCIA CRISTINA. Humic-like acids from hydrochars: Study of the metal complexation properties compared with humic acids from anthropogenic soils using PARAFAC and time-resolved fluorescence. Science of The Total Environment, v. 722, JUN 20 2020. (17/13230-5, 18/09914-9, 17/26718-6, 15/22954-1, 17/05408-9, 18/15733-7)

DOS SANTOS, JOAO VITOR; FREGOLENTE, LAIS GOMES; LARANJA, MARCIO JUSTI; MOREIRA, ALTAIR BENEDITO; FERREIRA, ODAIR PASTOR; BISINOTI, MARCIA CRISTINA. Hydrothermal carbonization of sugarcane industry by-products and process water reuse: structural, morphological, and fuel properties of hydrochars. BIOMASS CONVERSION AND BIOREFINERY, APR 2021. (17/13230-5, 18/09914-9, 17/26718-6, 15/22954-1, 17/05408-9, 18/15733-7)

DOS SANTOS, JOAO VITOR; FREGOLENTE, LAIS GOMES; MOUNIER, STEPHANE; HAJJOUL, HOUSSAM; FERREIRA, ODAIR PASTOR; MOREIRA, ALTAIR BENEDITO; BISINOTI, MARCIA CRISTINA. Fulvic acids from Amazonian anthropogenic soils: Insight into the molecular composition and copper binding properties using fluorescence techniques. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, v. 205, DEC 1 2020. (18/15733-7, 17/13230-5, 18/09914-9, 17/26718-6, 17/05408-9, 15/22954-1)

DOS SANTOS, JOAO VITOR; FREGOLENTE, LAIS GOMES; LARANJA, MARCIO JUSTI; MOREIRA, ALTAIR BENEDITO; FERREIRA, ODAIR PASTOR; BISINOTI, MARCIA CRISTINA. Hydrothermal carbonization of sugarcane industry by-products and process water reuse: structural, morphological, and fuel properties of hydrochars. BIOMASS CONVERSION AND BIOREFINERY, v. 12, n. 1, SI, p. 153-161, JAN 2022. (15/22954-1, 17/26718-6, 18/09914-9, 17/13230-5, 18/15733-7, 17/05408-9)