Jean Constantino Gomes da Silva- Doctor in Chemical Engineering
- Postdoctoral researcher at State University of Campinas (UNICAMP)
Jean Constantino Gomes da Silva
- Doctor in Chemical Engineering
- Postdoctoral researcher at State University of Campinas (UNICAMP)
Integration of biological and thermal conversion rotes for agroindustrial waste valorization
About
89
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Introduction
As a dedicated researcher in global energy transition, I specialize in biomass-based conversion processes, including thermochemical processes with fixed bed and fluidized bed reactors. I have expertise in chemical characterization and data treatment and related fields like gas absorption/adsorption, CO2 capture, and photocatalytic reactions/processes. My focus is to develop sustainable and efficient energy conversion technologies to mitigate the environmental impact of traditional energy sources
Current institution
Additional affiliations
September 2021 - September 2022
September 2017 - December 2021
February 2015 - February 2017
Education
September 2017 - December 2021
March 2015 - February 2017
April 2009 - August 2014
Publications
Publications (89)
Decentralized energy systems in the Amazon face challenges such as diesel dependence, high transport costs, and limited sustainability. Woody residues from sustainable forest management offer a viable bioenergy alternative, yet combustion kinetics, thermodynamics, and emissions data remain scarce. This study provides a comprehensive thermokinetic a...
This study investigated the multicomponent pyrolysis kinetics and thermodynamics of sea buckthorn branch (SBB) biomass to assess its bioenergy potential. Thermogravimetric analysis coupled with Fraser-Suzuki decon-volution identified three pseudo-components (PS-HC, PS-CL, and PS-LG) with peak temperatures of 283-305°C, 344-366°C, and 400-422°C, res...
In the context of the developing circular economy, algae biomass emerges as a promising and renewable source of bioenergy. Algae play a vital role in our marine environment and hold great potential for the production of biomaterials and bioenergy. This study explores the bioenergy potential of macroalgae Nitella hyalina through thermogravimetric an...
Steam gasification is a highly effective method for producing hydrogen (H 2) and represents a key valorization route for agro-industrial residues. In this scenario, the objective of the current study was to investigate the effect of torrefaction on the steam gasification of low-value agro-industrial residues, focusing on enhancing H 2 content in sy...
It delved into the pyrolysis-gasification behavior of waste pharmaceutical blisters (WPBs), exploring both kinetics and thermodynamics, and employing machine learning modelling. The decomposition of WPBs occurred in three stages, with temperature intervals of 140–350, 350–500, and 500–900 °C, respectively. Cyclization/aromatization reactions were h...
This work presents an evaluation of the industrial residue from exhausted black wattle bark after the extraction of tannin for use as a new feedstock for biofuel production, without competing with food production. The physicochemical and thermodynamic properties, the influence of temperature on pyrolysis products and multicomponent kinetics were ev...
Malt bagasse is a by-product of little commercial value in the brewing industry. Under this scenario, the current study represents the first investigation aiming to determine the kinetic triplet and thermodynamic parameters for malt bagasse pyrolysis using a multi-component kinetic approach to elucidate its bioenergy prospects. The pyrolysis progre...
The agave plant’s economic chain generates a significant waste, which has potential for sustainable bioenergy through pyrolysis. However, the diversity and heterogeneity of chemical composition of agave species may pose challenges. This study investigates the impact of species heterogeneity on the pyrolysis of three different agave species (Agave s...
This scientific paper provides an overview of the current state of pyrolysis in Europe, with a focus on mapping the key research areas and technologies employed. This research relied on search equations that centered on the utilization of biomass and plastics as primary feedstocks in pyrolysis, with a particular emphasis on biochar generation and d...
The first study in the literature on the pyrolysis of pequi (Caryocar brasiliense) residues, focusing on the kinetic triplet, thermodynamic parameters, and characterization of volatile products utilizing TGA and Py−GC/MS techniques, is presented in this paper. Slow pyrolysis experiments were conducted on a thermogravimetric scale in a controlled at...
The present study's motivation and novelty are related to the potential of raw (RCNS) and pressed (PCNS) cashew nutshell residues for producing bioenergy and renewable chemicals through their physicochemical characterization and pyrolysis processing (multicomponent kinetic analysis, thermodynamic study, and volatile product analysis). A thermogravi...
This work reports experimental findings for pyrolysis of the royal palm tree (RPT) waste, particularly emphasizing the kinetic triplet, thermodynamic parameters, and characterization of volatile products. Pyrolysis experiments were conducted in a thermogravimetric analyzer and an analytical pyrolyzer coupled with a gas chromatography-mass spectrome...
Realizou-se uma investigação do potencial do resíduo de sementes do butiá (RSB) como matéria-prima para obtenção de produtos químicos renováveis por meio de análise térmica e identificação simultânea dos produtos voláteis resultantes da pirólise, utilizando a técnica TGA−FTIR. Identificaram-se compostos aromáticos, bem como aldeídos, cetonas, éster...
Seaweeds are essential autotrophs in the marine environment, resembling submerged forests near shorelines that provide habitats for various organisms. They have now become a significant source of numerous bio-products and are cultivated and harvested in various regions worldwide, contributing to the burgeoning blue economy. Environmentally friendly...
Energy cane is a genotype derived from species of sugarcane (Saccharum officinarum and Saccharum spontaneum) with a lower sucrose content and higher fiber content for bioenergy purposes. It is a rustic plant that demands less fertile soils that do not compete with food crops. In this work, an analysis of energy cane bagasse pyrolysis products was p...
A análise TGA−FTIR indica que ácido propanóico, metanol, acetaldeído, éter dimetílico e etanol são liberados abaixo de 650 K ao utilizar o resíduo de sementes de manga para pirólise. Os resultados deste estudo possuem uma relevância para o aproveitamento do resíduo de sementes de manga como uma matéria-prima de baixo custo para a pirólise, com pote...
The abundant generation of pokan (Citrus reticulata) peel, passion fruit (Passiflora edulis), and pineapple (Ananas comosus) peel wastes in Brazil, estimated at 1.01 million tons, presents an opportunity for exploration. Based on our prior studies and relevant literature, these Brazilian agro-wastes possess significant potential due to their compos...
The study aimed to establish a comprehensive understanding of the photocatalytic process and optimize the reactor design for efficient ethylene regulation to improve the shelf-life of fruits and vegetables. For this, it was performed 2D computational fluid dynamics modeling at two different reactor geometry (conventional cylindric reactor and annul...
An investigation was conducted to elucidate the bioenergy potential of mango seed waste through pyrolysis kinetics, thermodynamics parameters of activation, and analysis of evolved volatiles. Experiments were performed in a thermogravimetric analyzer (TGA) coupled with a Fourier transform infrared (FTIR) spectrometer. The pyrolysis behavior was ass...
The current study aims to investigate the physicochemical properties and pyrolysis characteristics (kinetic triplet and thermodynamic parameters) of the invasive grass Cenchrus echinatus to assess its bioenergy potential. A thermogravimetric analyzer was employed to obtain the pyrolysis behavior of the grass under slow non-isothermal conditions. Fi...
The macroalgae, Rhizoclonium hookeri has the ability to grow in fresh and wastewater rich in nutrients like phosphorus and nitrogen. Here we have performed the slow pyrolysis of dried R. hookeri at three different thermal rates of 5, 10 and 20 °C min−1 from 25 to 800 °C using the thermogravimetric technique to get the thermokinetics for its bioener...
The present paper aims to elucidate the bioenergy potential of the invasive grass Eleusine indica based on its physicochemical characterization, pyrolysis kinetics, and thermodynamic parameters. The pyrolytic behavior of E. indica acquired from non-isothermal thermogravimetric experiments was kinetically represented by three independent parallel re...
Two low-value agro-industrial residues, passion fruit peel waste (PF) and pineapple peel waste (PA), were considered in this study as feedstocks to produce solid biofuels by torrefaction. The experiments were conducted in a macro-TGA with GC-TCD/FID analysis to investigate their torrefaction characteristics. The GC-TCD/FID analysis allowed quantify...
The photocatalysts area aims for feasible clean-renewable energy generation, targeting new low-cost and straightforward manufacturing of visible light-responsive materials by developing organic and inorganic novel composites. This work shows a novel approach, exploring three widely used commercially available powders (SiC, SiOC, and TiO2) to build...
A técnica simultânea de TGA-FTIR mostrou que os produtos voláteis evoluídos a partir da
pirólise da casca do cupuaçu foram dominados por álcoois, aldeídos, cetonas, ácidos
orgânicos e hidrocarbonetos aromáticos/alifáticos, apoiando a utilidade da casca de
cupuaçu como uma fonte potencial para a produção de produtos químicos de base
renovável. Em re...
O presente estudo teve por objetivo avaliar a potencialidade energética e a combustibilidade da borra de erva mate visando sua valorização. Os resultados de caracterização confirmaram a adequação da borra de erva mate como matéria prima para a combustão com um considerável conteúdo energético, e baixo conteúdo de cinzas e de enxofre. Os índices de...
A sociedade e a economia têm dependido cada vez mais da energia, em que o grau de seu consumo dos principais indicadores para o desenvolvimento de uma sociedade. O ápice da dependência energética começou após a descoberta e aplicação do petróleo e seus derivados pela sociedade. Porém, sabe-se que o consumo do petróleo (combustível fóssil) sem o dev...
Este trabalho tem como objetivo investigar as características energéticas de Andropogon bicornis, Eupatorium maximilianii e Sida rhombifolia, plantas invasoras, para identificar seu potencial como recursos energéticos renováveis. A este respeito, uma caracterização físico-química detalhada foi realizada e comparada com uma biomassa típica para fins...
The aim of this study is to investigate the thermal behavior of Pinus wood pellets during torrefaction under different operational conditions, as well as to evaluate the potential application of the torrefied product in metallurgical processes. Torrefaction tests were carried out in an oxidizing atmosphere (245 °C) and in an inert atmosphere (270 a...
In the present study, an attempt was made to investigate the physicochemical characteristics of Sorghum halepense, often called Johnson grass, and its performance in pyrolysis. For this, the pyrolytic process of the S. halepense under thermogravimetric scale was first acquired using three heating rates (5, 10, and 20 °C min−1). Following this, the...
The pyrolysis of butia seed waste (BSW) was investigated under a thermogravimetric scale at multiples heating rates (5–40 °C min−1) in a nitrogen atmosphere. First, the pyrolysis behavior of BSW was deconvoluted into four independent reactions using the Asym2Sig fitting function. The kinetic triplets (activation energies, pre-exponential factors, a...
This study is the first report that focuses on investigating the effects of torrefaction on the bioenergy-related properties, combustion behavior, and potential emissions of banana leaf waste (BLW). Experiments were first conducted in a bench-scale fixed-bed reactor operating at light (220 °C), mild (250 °C), and severe (280 °C) torrefaction condit...
This research aimed to investigate the physicochemical properties and the pyrolysis performance of cupuassu shell (Theobroma grandiflorum) under a thermogravimetric scale. The pyrolysis experiments were carried out using a pure nitrogen atmosphere and at five heating rates (5, 10, 20, 30, and 40 K min⁻¹). The pyrolysis kinetic triplet was calculate...
Cladophora biomass, through pyrolysis, has great potential for utilization in bioenergy applications and biochar formation. Here, we performed a detailed kinetic and thermodynamic evaluation of the slow pyrolysis of Cladophora glomerata. The
pyrolysis was performed in a thermogravimetric analyzer using non-oxidative inert conditions of nitrogen gas...
A new opportunity for producing valuable biorefinery products can be found by integrating biochemical and thermochemical processing with municipal wastewater treatment. This study is the first to evaluate the kinetic triplet and thermodynamic parameters from the pyrolysis of typical Brazilian anaerobic sewage sludge performed in the framework of a...
This study presents the first attempt to focus on the cocoa shell pyrolysis in terms of kinetic triplet, thermodynamic parameters, and evolved volatile analysis using the TGA-FTIR technique. For reliable interpretation of the multistep pyrolysis of cocoa shell, the multiple kinetic triplets were adequately estimated by a combined kinetic procedure...
The present study attempts to explore the energy potential of smoked cigarette butts (SCB) through pyrolysis. For the first time, the pyrolysis characteristics, including the kinetic triplet and the thermodynamic parameters, were investigated using non-isothermal thermogravimetry. Firstly, three pseudo-components were successfully deconvoluted from...
This work reports the first detailed investigation of the physicochemical properties of the pecan nutshell waste (PNS) and its suitability for pyrolytic conversion into bioenergy and bio-based chemicals based on the kinetic triplet, thermodynamic parameters, and Py-GC/MS analysis. The pyrolysis behavior of PNS was assessed using a thermogravimetric...
Catole coconut (Syagrus cearensis) is produced in abundance in the Northeastern region of Brazil, but still remains relatively unexploited for bioenergy purposes because of the little relevant scientific information available. In this context, this study aims to investigate the kinetics and thermodynamics that describe the pyrolysis of catole cocon...
Políticas e diretrizes mundiais estão fortalecendo tecnologias para produção de combustíveis com baixas emissões de carbono, assim, o interesse na busca por tecnologias para produção de hidrogênio verde tem crescido. O hidrogênio produzido pode ser utilizado na síntese de amônia, metanol e outros hidrocarbonetos. Dentre as rotas renováveis, a gasei...
The freshwater alga Spirogyra crassa was subjected to pyrolysis to investigate its potential use as a bioenergy feedstock. To do so, the pyrolysis behavior of the Spirogyra crassa under thermogravimetric scale was first determined at the temperature range from 25 to 800 °C, with three slow heating rates (5, 10, and 20 °C min−1) under an oxygen-free...
This work provides the first insights on the bioenergy potential of macauba endocarp (Acrocomia aculeate) based on the pyrolysis kinetics and thermodynamic parameters of activation. The kinetic triplet was obtained from non-isothermal thermogravimetric data by using four isoconversional methods, kinetic compensation effect, and master-plots method....
Biomass is one of the key components for bioenergy generation in recent epoch as traditional resources and depleting swiftly. Going through this fact, the present study aims to appraise the feasibility of Holy Thistle (HT) to produce energy and valuable organic chemicals through pyrolysis. The HT was pyrolyzed at four heating rates including, 10, 2...
The current study aims to investigate the pyrolysis process and bioenergetic potential of pineapple peel and passion fruit shell wastes (by-products of food processing industry) by the physicochemical characterization, mass balance, energy balance, atomic balance, and kinetic study. Pyrolysis was performed at low heating rates (5, 10, and 15 °C min...
O Brasil e as demais regiões áridas e semiáridas do mundo sofrem limitações em seu desenvolvimento urbano nos setores agrícolas e industriais, ocasionadas pela escassez da água. O reúso de águas, além de auxiliar na preservação das águas de melhor qualidade para o consumo humano, é também uma forma de mitigação de contaminação de corpos receptores....
This is the first study where the pyrolysis of the freshwater macroalga Chara vulgaris was explored to reveal its bioenergy potential. The suitability of C. vulgaris to bioenergy conversion via pyrolysis was accessed in terms of kinetic triplet and thermodynamic parameters. For this purpose, pyrolysis experiments under a thermogravimetric scale wer...
The novelty of this study is that it presents the first in-depth evaluation of the kinetic triplet and thermodynamic parameters from the pyrolysis of açaí seed (Euterpe oleracea), which is the main biowaste from the açaí fruit processing industry. First, the physicochemical characteristics of the açaí seed, i.e., the proximate analysis, ultimate an...
Clean thermochemical conversion of lignocellulosic residues is particularly interesting for both bioenergy production and environmental protection. For this reason, the novelty of this study is to present tamarind residues (husks and seeds) from the tamarind fruit processing industry as new prospective feedstocks for bioenergy production considerin...
The objective of this study is to evaluate the optimum torrefaction conditions needed to improve the energetic characteristics of Ponkan peel waste (a citrus-processing industry by-product). Torrefaction was performed in a tubular fixed-bed reactor at 200-300 ºC for 15-60 min. The non-condensable and condensable gases were analyzed by a gas analyze...
This paper is the first comprehensive report about the renewable fuels produced from the pyrolytic conversion of anaerobic and aerobic Brazilian high-ash sewage sludges. The study was divided into three steps: (1) an in-deep evaluation of physicochemical characteristics of both sewage sludges; (2) thermogravimetric analysis under inert conditions f...
This work aims to investigate the energy-related characteristics of apple bagasse, orange bagasse and cashew-apple bagasse to identify their potential as bioenergy feedstocks. For this, a detailed characterization was performed, including proximate analysis, ultimate analysis, atomic molar ratio, heating values, chemical composition, bulk density,...
Around 2.96 million tons of potential feedstocks are generated annually in the form of jackfruit waste, including peels (JP) and seeds (JS). This study assessed the suitability of JP and JS as new feedstocks for combustion and their preliminary potential for bioenergy considering their physicochemical properties, bioenergy indicators, combustion be...
The kinetic pyrolysis is often studied as a global process (single-step mechanism), but this method is inadequate since it does not adequately describe the biomass pyrolysis. In this context, the purpose of this study is to present a simple pathway to describe the kinetic parameters of pyrolysis properly. Sugarcane bagasse waste and cashew nut shel...
The purpose of this study is to investigate the kinetic and products of the pyrolysis of Ponkan peel waste (Citrus reticulata) to determine its bioenergy potential. Pyrolysis runs were performed under an inert environment at 5, 10 and 15 °C min−1 in a macro-TGA coupled to a GC-FID/TCD for analysis of non-condensable gases (CO, CO2, CH4 and H2), whi...
Pyrolysis is widely used as a waste treatment technology (thermal recycling), which can be an alternative to disposal in landfills. To investigate the applicability of pyrolysis to recovery energy from plastic solid waste (PSW), the pyrolysis of PSW was performed in a thermogravimetric analyzer under an inert condition. The PSW samples were heated...
The aim of this study was to investigate the bioenergy
potential of red macroalgae GF by evaluating its biofuel physicochemical
characteristics, and conducting a kinetic study and thermodynamic
analysis of pyrolysis for the first time. The thermal decomposition study
was performed at low heating rates (5, 10, 20 and 30 °C min-1) under N2
atmosphere...
The objective of this study was to develop a novel pilot-scale system that combines pyrolysis and combustion processes, fed by a mixture of municipal solid waste (MSW) and wood chips (WC). The pyrolysis of MSW+WC (1:1) produces char and volatiles as fuels, which just the pyrolysis gas was used in a post-combustion chamber for heat generation. The g...
The green coconut (Cocus nucifera) is widely consumed in the world; however, its processing generates a large amount of waste, which presents a high energetic potential. The coconut waste is composed of skin, husk, and shell, where each part can be showing different physicochemical and thermal characteristics. Thus, this study presents the physicoc...
In this work, the bioenergy potential of green microalgae Scenedesmus acuminatus was evaluated through the psychochemical characteristics and kinetic study of pyrolysis, where the results indicate a good candidate for application in the thermochemical process due to its low moisture and ash content and high calorific value. Its thermal behavior und...
This work provides the first study about the evaluation of the bioenergy potential of lignocellulosic waste from Brazilian pine-fruit shell (Araucaria angustifolia). Physicochemical characterization, evolved gas from pyrolysis, and kinetic and thermodynamic studies were performed. A thermogravimetric analyzer was used for the pyrolysis experiments,...
In the present study, the bioenergy potential of two invasive aquatic macrophytes, water hyacinth (Eichhornia crassipes) and yellow velvetleaf (Limnocharis flava), were investigated through thermochemical characterization, kinetic study and thermodynamic analysis. Thermochemical characterization indicated that the two study specimens have a good po...
The study of different renewable energy sources has been intensifying due to the current climate changes; therefore, the present work had the objective to characterize physicochemically the pistachio shell waste and evaluate kinetic parameters of its combustion. The pistachio shell was characterized through proximate analysis, ultimate analysis, SE...
The objective of this study was to evaluate the kinetic parameters of a gasification process, under CO2 atmosphere, of biochars produced from the agroindustrial wastes: castor bean presscake (CBP) and mesquite pod bagasse (MPB). The biochars were produced by pyrolysis under atmospheric pressure with N2 gas flow of 400 mL min-1 at two conditions, th...
The objective of this study was to evaluate the kinetic parameters of pyrolysis of waste wood from reforestation: Eucalyptus benthamii (EB), Eucalyptus dunnii (ED) and Pinus elliottii (PN). The kinetic study was performed using the Friedman, Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), Starink, and Vyazovkin methods from the experimental...
A crescente preocupação com o esgotamento de fontes não renováveis de energia e com os impactos ambientais relacionados ao uso desenfreado desses combustíveis ocasionou a busca pela diversificação da matriz energética mundial a partir de recursos renováveis. Dentre os quais a utilização de biomassa merece destaque. Neste contexto, a torta da mamona...
Um dos grandes desafios da sociedade atual têm sido a busca pela independência em relação a utilização dos combustíveis fósseis como principal fonte de energia devido a seu esgotamento e emissões de poluentes. A utilização de biomassa é uma excelente alternativa para esse fim, pois além de ser um recurso renovável, diminui as emissões de CO2, SOx e...
The objective of this study is to verify the possibility of using solid waste from cashew culture (CNS and CAB) as an alternative and renewable energy source in thermal conversion processes, characterizing them physical-chemically (immediate analysis, calculation of calorific value, SEM and XRF), and verifying the probability of ash melt. Furthermo...
This work had for objective characterize the pistachio shell waste and evaluate of the thermal and kinetic behavior of the combustion process. The pistachio shell was characterized through the proximate analysis and Fourier Transform Infrared Spectroscopy (FTIR). The thermal and kinetic behavior was evaluated by a thermogravimetric analyzer under o...
O presente estudo teve como proposta sintetizar carvão ativado quimicamente com ácido fosfórico (H3PO4) e fisicamente com vapor de água sintetizado a partir de resíduos vegetais urbanos, ou seja, a partir de matériasprimas de baixo custo. Além disso, caracterizar e comparar a estrutura porosa do carvão ativado produzido através de análise de adsorç...
RESUMO A água é um recurso natural indispensável à vida, logo o aumento da eficiência de tratamento dos efluentes gerados pelas indústrias para fins de reuso promove a sustentabilidade do setor e a redução dos impactos ao meio ambiente. Dentre os principais efluentes industrias destaca-se o oriundo de refinaria de petróleo que possuem compostos org...
Este trabalho teve por objetivo avaliar o processo de adsorção com carvão ativado sintetizado a partir de resíduos celulósicos como a poda da arborização urbana, na remoção de cor. O carvão foi ativado fisicamente com vapor de água e quimicamente com ácido fosfórico. Como corante modelo foi utilizado a Phthalocyanine Green G e após investigação da...
