Investigation of co-combustion of sewage sludge and coffee industry residue by TG-FTIR and machine learning methods

Ni, Zhanshi; Bi, Haobo; Jiang, Chunlong; Sun, Hao; Zhou, Weixing; Tian, Junjian; Lin, Qizhao

doi:10.1016/j.fuel.2021.122082

Cited by 47 publications

(9 citation statements)

References 61 publications

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“…Additionally, it can be observed from the figure that the order of the maximum mass loss rate coincided with the order of peak absorption intensity, namely, PS DTG max (19.73%/min) > WS DTG max (13.27%/min) > CS DTG max (11.23%/min). According to Lambert–Beer's law, under the same experimental conditions, the absorption intensity of a gas is proportional to its release concentration 22 . This suggested that when biomass pyrolysis reached the maximum mass loss rate, the gaseous products generated during pyrolysis were released most strongly at that time.…”

Section: Resultsmentioning

confidence: 99%

“…According to Lambert-Beer's law, under the same experimental conditions, the absorption intensity of a gas is proportional to its release concentration. 22 This suggested that when biomass pyrolysis reached the maximum mass loss rate, the gaseous products generated during pyrolysis were some gaseous products during hemicellulose pyrolysis at lower temperatures. 23…”

Section: Effect Of Pyrolysis Time On Total Absorbance Of Gaseous Prod...mentioning

confidence: 99%

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Study on pyrolysis behavior of agricultural and forestry wastes using thermogravimetric‐Fourier transform infrared spectrometer (TG‐FTIR)

Liu,

Li,

Liu

et al. 2023

Asia-Pacific J Chem Eng

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To investigate the effective utilization of agricultural and forestry wastes for mitigating the shortage of primary energy and environmental pollution, the pyrolysis behavior of corn straw (CS), wheat straw (WS), and poplar sawdust (PS) was studied using thermogravimetric–Fourier transform infrared (TG‐FTIR) analysis. The activation energies and pyrolysis mechanism functions of different biomass types were calculated. The results showed that the functional group structures of the gaseous products generated from the pyrolysis of different biomass types were similar, mainly including OH, aliphatic CH, CO, aromatic ring skeleton, aromatic CH, and CO groups. These functional group structures mainly existed in oxygen‐containing compounds such as phenols, ketones, aldehydes, acids, esters, alcohols, and ethers. The pyrolysis process of agricultural and forestry wastes exhibited certain differences, with the PS undergoing thermal decomposition more easily, while the thermal decomposition mechanism functions of the two agricultural wastes (CS and WS) were similar. PS had a later initial release time for volatile matter, and the oxygen compounds produced by its pyrolysis were the highest, followed by WS and CS.

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Section: Resultsmentioning

confidence: 99%

Section: Effect Of Pyrolysis Time On Total Absorbance Of Gaseous Prod...mentioning

confidence: 99%

Study on pyrolysis behavior of agricultural and forestry wastes using thermogravimetric‐Fourier transform infrared spectrometer (TG‐FTIR)

Liu,

Li,

Liu

et al. 2023

Asia-Pacific J Chem Eng

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“…Figure S7 is the FTIR spectrum of decomposed gases at 638 °C, and the characteristic peaks of H 2 O, CH 4 , CO 2 , CO, and NO 2 can be observed. 54 During the decomposition of these gases, a large number of micropores are recreated in the film, causing a high specific surface area.…”

Section: Resultsmentioning

confidence: 99%

“…It is worth noting that, following the increase in temperature, the CO 2 gradually becomes the dominant component of the gases generated by the decomposition of Kevlar, and its maximum amount is reached at 638 °C. Figure S7 is the FTIR spectrum of decomposed gases at 638 °C, and the characteristic peaks of H 2 O, CH 4 , CO 2 , CO, and NO 2 can be observed . During the decomposition of these gases, a large number of micropores are recreated in the film, causing a high specific surface area.…”

Section: Resultsmentioning

confidence: 99%

Laminated Structural Engineering Strategy toward Carbon Nanotube-Based Aerogel Films

Sheng

Zhang

2022

ACS Nano

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Aerogel films with a low density are ideal candidates to meet lightweight application and have already been used in a myriad of fields; however, their structural design for performance enhancement remains elusive. Herein, we put forward a laminated structural engineering strategy to prepare a free-standing carbon nanotube (CNT)-based aerogel film with a densified laminated porous structure. By directional densification and carbonization, the three-dimensional network of one-dimensional nanostructures in the aramid nanofiber/carbon nanotube (ANF/CNT) hybrid aerogel film can be reconstructed to a laminated porous structure with preferential orientation and consecutively conductive pathways, resulting in a large specific surface area (341.9 m 2 /g) and high electrical conductivity (8540 S/m). Benefiting from the laminated porous structure and high electrical conductivity, the absolute specific shielding effectiveness (SSE/ t ) of a CNT-based aerogel film can reach 200647.9 dB cm 2 /g, which shows the highest value among the reported aerogel-based materials. The laminated CNT-based aerogel films with an adjustable wetting property also exhibit exceptional Joule heating performance. This work provides a structural engineering strategy for aerogel films with enhanced electric conductivity for lightweight applications, such as EMI shielding and wearable heating.

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“…Three thermolysis kinetic models were used in this paper to evaluate the activation energies of the reactions-Eq. (5-7) (Meng et al 2015, Ni et al 2022, Zhang et al 2019.…”

Section: Pyrolysis Kinetic Modelsmentioning

confidence: 99%

Pyrolysis characteristics, kinetics, and biochar of fermented pine sawdust–based waste

Zhang

Cheng

et al. 2023

Environ Sci Pollut Res

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Pyrolysis characteristics, kinetics and modified biochar derived from pine sawdust after fermentation (FPD) were determined by Fourier Transform Infrared (FTIR), Thermogravimetric analysis (TG) and Scanning Electron Microscopy (SEM), and comparison was established with pine sawdust (PD). The pretreatment i.e. fermentation changed the properties of raw materials and improved the pyrolysis properties.The variation range of CPI values of FPD was 6.51×10 -7 -16.38×10 -7 % 2 •min -2 •°C -3 , significantly higher than that of untreated samples determined under the same experimental conditions. The average activation energy of FPD was 367.95 kJ/mol attained by Flynn-Wall-Ozawa (FWO) method, 389.45 kJ/mol by Kissinger-Akahira-Sonuse (KAS) and 346.55 kJ/mol attained by Starink method much higher than PD. Additionally, fermentation could enhance the adsorption capacity for methylene blue of biochar from 0.76 mg/g to 1.6mg/g due to the abundant surface functional groups and three-dimensional internal pore structure.The adsorption pattern of fermented pine wood shifted from chemisorption dominated to the synergetic adsorption of surface functional groups adsorption and intragranular filling. Pyrolysis kinetics and biochar determination provide an in-depth understanding of fermented pine sawdust pyrolysis behaviors and product characteristics, which is the basis for designing pyrolysis process and re-using fermentation residues.

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Investigation of co-combustion of sewage sludge and coffee industry residue by TG-FTIR and machine learning methods

Cited by 47 publications

References 61 publications

Study on pyrolysis behavior of agricultural and forestry wastes using thermogravimetric‐Fourier transform infrared spectrometer (TG‐FTIR)

Study on pyrolysis behavior of agricultural and forestry wastes using thermogravimetric‐Fourier transform infrared spectrometer (TG‐FTIR)

Laminated Structural Engineering Strategy toward Carbon Nanotube-Based Aerogel Films

Pyrolysis characteristics, kinetics, and biochar of fermented pine sawdust–based waste

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