Development of biomass fast proximate analysis by thermogravimetric scale

Velázquez‐Martí, Borja; Gaibor‐Chávez, Juan; Niño, Zulay; Cortés-Rojas, E.

doi:10.1016/j.renene.2018.04.021

Cited by 14 publications

(6 citation statements)

References 14 publications

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“…The weight change of corn stover biomass was recorded following temperature and time. A 2 g sample of dried powder was placed in the crucible in the analyzer ( Velázquez-Martí et al, 2018 ). The morphology of untreated and treated samples was determined using a scanning electron microscope (ZEISS EVO 18 Research) ( Shamala et al, 2009 ).…”

Section: Methodsmentioning

confidence: 99%

A sustainable synthesis of polyhydroxyalkanoate from stubble waste as a carbon source using Pseudomonas putida MTCC 2475

Kukreti,

Kumar,

Kataria

2024

Front. Bioeng. Biotechnol.

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Polyhydroxyalkanoates (PHAs) are biodegradable polymers that can be produced from lignocellulosic biomass by microorganisms. Cheap and readily available raw material, such as corn stover waste, has the potential to lessen the cost of PHA synthesis. In this research study, corn stover is pretreated with NaOH under conditions optimized for high cellulose and low lignin with central composite design (CCD) followed by characterization using Fourier-transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), and scanning electron microscopy (SEM). Design expert software performed further optimization of alkali pretreated corn stover for high total reducing sugar (TRS) enhancement using CCD using response surface methodology (RSM). The optimized condition by RSM produced a TRS yield of 707.19 mg/g. Fermentation using corn stover hydrolysate by Pseudomonas putida MTCC 2475 gave mcl-PHA detected through gaschromatography–tandemmassspectrometry (GC-MS/MS) and characterization of the PHA film by differential scanning calorimetry (DSC), FTIR, and nuclear magnetic resonance (NMR). Thus, this research paper focuses on using agriculture (stubble) waste as an alternative feedstock for PHA production.

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Section: Methodsmentioning

confidence: 99%

A sustainable synthesis of polyhydroxyalkanoate from stubble waste as a carbon source using Pseudomonas putida MTCC 2475

Kukreti,

Kumar,

Kataria

2024

Front. Bioeng. Biotechnol.

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“…The thermogravimetric scales are used to characterize biomass; they evaluate the weight loss of a sample when temperature increases in a controlled environment. This environment could be an oxidizing atmosphere (e.g., air) or an inert atmosphere (e.g., nitrogen or helium) [ 34 , 35 ]. This method also allows investigators to observe the thermal stability of the specimen where the TGA is obtained.…”

Section: Methodsmentioning

confidence: 99%

Date pits based nanomaterials for thermal insulation applications—Towards energy efficient buildings in Qatar

et al. 2021

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Air-conditioning systems make the most significant part of energy consumption in the residential sector. There is no denying that it is essential to produce a comfortable indoor thermal environment for residents in a building. The actual goal is to achieve thermal comfort level without putting too much cost on the ecological system by trying to conserve the amount of energy consumed. An effective way to help achieve such a goal is by incorporating thermal insulation in buildings. Thermal insulations help reduce thermal energy gained during the implementation of a desired thermal comfort level. This study aims to use an environmentally friendly nanoparticle of date pits to create thermal insulations that can be used in buildings. Different ratios of the nanoparticle of the date pits and sand composite were investigated. Fourier transform infrared spectroscopy and scanning electron microscopy were used to characterize the new materials. The material with nanoparticles of date pits and 50% by-volume epoxy provided good thermal insulation with thermal conductivity of 0.26 W⁄mK that could be used in the existing buildings. This has the potential to reduce the overall energy consumption by 4,494 kWh and thereby reduce CO2 emissions of a 570 m2 house by 1.8 tons annually. In conclusion, the future of using nanoparticles of date pits in construction is bright and promising due to their promising results.

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“…The volatiles are the gases released during the increase in temperature. A third fraction that makes up biomass is fixed carbon, formed by combustible organic substances that are not capable of volatilizing [4]. The sum of these three fractions (ash, volatiles, and fixed carbon) constitutes 100% of the biomass and determines its behavior in combustion, pyrolysis, or gasification [5].…”

Section: Introductionmentioning

confidence: 99%

“…Some researchers have studied the calculation of ash and volatiles with TGA. The works of Mayoral [9], Lapueta et al [8], Skreiberg [2], or Velázquez-Martí [4] investigated the influence of different biomass mixtures on the TGA curves or the experimental optimization of the proximal analysis of coal and biomass through thermogravimetric analysis (TGA) using the simplex method. Control variables were heating rate; final temperature; retention time; air, nitrogen, or argon flow; and sample size.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Intermediate Values of the TGA Curves as Indicators of the Proximal Analysis of Biomass

Velázquez Martí,

Gaibor-Chavez,

López Cortés

et al. 2023

Agronomy

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Thermogravimetric analysis (TGA) is becoming popular for the evaluation of biomass to determine the content of ashes, volatiles, and fixed carbon and to simulate pyrolysis, gasification, and combustion processes. This analysis consists of heating a sample recording the weight variation as the temperature increases over time. The final temperature of the analyzes is usually set at 550 °C or 900 °C. The aim of this paper is to use the intermediate weight values obtained in short times from heating process in TGA to calculate the percentage of volatile, ash, or the residual mass remaining at the end of the experiment. Under the hypothesis that the curve does not vary when the analysis is carried out under certain conditions for the same type of biomass, these values must be similar and are related to the searched values. Nevertheless, given that the behavior of the thermogravimetric curves can be influenced by different factors, such as the species, temperature variation with time, final temperature reached, and presence of leaves, these factors are analyzed in this article. The results show models developed for the ash and volatiles determination from TGA time reduced to 75 s when a temperature increase of 200 °C per minute is used (CR-200 and VR-200 models). The curves obtained have R2 coefficients of between 0.75 and 0.95, being validated through independent samples. It is shown that the plot of the curve is influenced by the composition, the rate of heating and the percentage of leaves. This variability makes it necessary to select an analytical method that is efficient and as brief as possible. In this article, rapid analyses combined with the application of the equations obtained are proposed.

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Development of biomass fast proximate analysis by thermogravimetric scale

Cited by 14 publications

References 14 publications

A sustainable synthesis of polyhydroxyalkanoate from stubble waste as a carbon source using Pseudomonas putida MTCC 2475

A sustainable synthesis of polyhydroxyalkanoate from stubble waste as a carbon source using Pseudomonas putida MTCC 2475

Date pits based nanomaterials for thermal insulation applications—Towards energy efficient buildings in Qatar

Evaluation of the Intermediate Values of the TGA Curves as Indicators of the Proximal Analysis of Biomass

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