Production of bio-oil from coir pith via pyrolysis: kinetics, thermodynamics, and optimization using response surface methodology

Choudhury, Nabajit Dev; Bhuyan, Nilutpal; Bordoloi, Neonjyoti; Saikia, Nabajyoti; Kataki, Rupam

doi:10.1007/s13399-020-00630-3

Cited by 22 publications

(5 citation statements)

References 30 publications

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“…Lower percentage of nitrogen suggested that formation of lesser NO x gases during combustion(Dhande et al 2021). The H/C and O/C ratios of LG-BO are 1.68 and 0.50 respectively, which resemble to that of petroleum products (H/C ratio :1.5 to 2.0 and O/C ratio < 0.6)(Choudhury et al 2021). Calori c value, density, and viscosity etc.…”

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confidence: 65%

“…The C, H, N and O content of LG-BO were found to be 54.78%, 7.67%, 0.53% and 37.02%, respectively. The HHV of the LG-BO was determined as 30.24 MJ/kg, which is lesser than diesel's HHV, since O content of LG-BO was signi cantly higher than diesel(Choudhury et al 2021). The high O content makes bio-oil appropriate towards catalytic steam reforming attributes to hydrogen energy production.…”

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confidence: 84%

“…1017 kg/m 3 speci ed the heavy fractions availability. Table5compares LG-BO properties with those produced from Tithonia diversifolia(Bhuyan et al 2022) and coir pith(Choudhury et al 2021).…”

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confidence: 99%

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Optimization of biogenic supplementary cementitious materials in concrete prepared from East-Indian Lemon Grass (Cymbopogon flexuosus) and poultry litter using response surface methodology

Bora,

Daimary,

Athparia

et al. 2024

Energ. Ecol. Environ.

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Developing high-quality construction materials from agricultural waste as a substitute of conventional cement is receiving immense global interest in recent times, due to issues like greenhouse gas emissions and extensive energy consumption during cement production. This study aims to investigate the compressive, exural and split tensile strengths of concrete through the utilization of bio-based products prepared from East-Indian lemon grass (Cymbopogon exuosus) and poultry litter as supplementary cementitious materials (SCMs). The optimization process involves Central Composite Design (CCD) based Response Surface Methodology (RSM) for modelling and statistical analyses using experimental data from the study.Analysis of variance (ANOVA) revealed the model's signi cance, with coe cient of determination (R 2 ) of 0.9956. The individual and synergistic effects of the considered factors on compressive strength were analyzed using three-dimensional response surface plot. Based on RSM analysis, concrete prepared by substituting 17.57% of Ordinary Portland cement with SCM (which was cured for 25.82 days with a water-cement ratio of 0.54), yielded the optimum compressive, exural and split tensile strengths of 33.94 ± 0.12, 8.78 ± 0.02 and 3.06 ± 0.02 N/mm² respectively. Furthermore, the SCM-mixed concrete exhibited enhanced durability properties of the concrete structure. The ndings also demonstrate the robustness of RSM as a signi cant tool for optimization of concrete performance. Moreover, the characterization results of pyrolytic lemon grass biooil (LG-BO) con rms its bioenergy potential thereby suggesting its diverse utilization in various applications. Article HighlightsUse of lemon grass shows a potential integrated approach towards production of supplementary cementitious material (SCM) and biofuel.Partially substituting cement with SCM derived from lemon grass & poultry litter enhanced mechanical & durability properties in concrete.Response Surface Methodology proved its effectiveness as a suitable tool in optimization of concrete performance.

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confidence: 65%

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confidence: 84%

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Optimization of biogenic supplementary cementitious materials in concrete prepared from East-Indian Lemon Grass (Cymbopogon flexuosus) and poultry litter using response surface methodology

Bora,

Daimary,

Athparia

et al. 2024

Energ. Ecol. Environ.

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“…There are few reports on the different kinetic parameters of oil-based drilling cuttings and the properties of pyrolysis products. [14].In this study, the treatment technology of OBDC was reasonably analyzed from the perspective of pyrolysis kinetics and product characteristics of oil-based drilling cuttings under the background of resource utilization. The kinetic parameters were accurately calculated by different models, the key properties of the product and the quality of the pyrolysis gas product were investigated, and the migration characteristics of heavy metals in the pyrolysis residue were analyzed.…”

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confidence: 99%

Study on pyrolysis law of shale gas oil-based drilling cuttings : kinetics and product characteristics

Liu,

Li,

et al. 2024

Preprint

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oil-based cuttings(OBDC)is a typical hazardous waste produced in the process of shale gas field development, and pyrolysis has been proved to be an effective treatment method, that can recover the harmful components and achieve resource reuse. In this paper, thermogravimetric experiments were carried out to study the pyrolysis kinetics, and the effects of pyrolysis temperature on the gas phase yield, oil quality and solid phase heavy metal migration were analyzed. The results show that the pyrolysis of OBDC is divided into three stages, and the light hydrocarbon cracking stage is the key control step of the pyrolysis process. In addition, the maximum weight loss rate of the sample with high heating rate appears at a higher temperature. Friedman (FM), Flynn-Wall-Ozawa (FWO), Kissinger-Akahira-Sunose (KAS), Starink conversion methods can well fit the weight loss curve, and the estimated average activation energy is 185.5,184.16,166.17 and 176.03 kJ / mol, respectively. The estimated values are close and more accurate. The activation energy increases with the deepening of the reaction process. The solid phase products after pyrolysis accounted for more than 70% of the main products. The pyrolysis temperature had a great influence on the liquid phase yield, and the oil phase yield decreased by 1.17% from 450°C to 500°C. In the recovered mineral oil before and after pyrolysis: C15 ~ C28 pyrolysis C10 ~ C14 increased by 2.89%, C15 ~ C28 volatilization decreased by 3.26%, and high temperature aging increased C29 ~ C36 by 0.63%; aromatic hydrocarbons, as the coking parent, change from low ring to high ring. In addition, the content of heavy metals in the residue increased after pyrolysis, and more heavy metals were enriched in the residue. This study is helpful for the solidification of heavy metals and the recycling of solid waste, which is conducive to reducing energy and resource consumption and improving the processing technology of production.

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“…The evaluation of kinetic parameters and the pyrolysis reaction mechanism are critical for optimizing process parameters, expanding the production scale, and designing pyrolysis reaction systems . Methods developed by thermogravimetric analysis (TGA) are best suited to study the pyrolysis process of various sludges. , OBDCs have various components, the pyrolysis process is complex and changeable, and the activation energy changes significantly throughout the process.…”

Section: Introductionmentioning

confidence: 99%

Study on Pyrolysis of Shale Gas Oil-Based Drilling Cuttings: Kinetics, Process Parameters, and Product Yield

Liu

Xiao

Dai³

et al. 2023

ACS Omega

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The main reaction range (350–550 °C) of oil-based drilling cutting (OBDC) pyrolysis was studied by a thermogravimetric analyzer and a vacuum tube furnace. The average activation energies calculated by four model-free methods were 185.5 kJ/mol (FM), 184.16 kJ/mol (FWO), 166.17 kJ/mol (KAS), and 176.03 kJ/mol (Starink). The reaction mechanism was predicted by the Criado (Z-master plot) method. It is found that a high heating rate is helpful to predict the reaction mechanism, but it cannot be described by a single reaction model. Under the conditions of target temperature higher than 350 °C, residence time higher than 50 min, laying thickness less than 20 mm, and heating rate lower than 15 °C, the residual oil content is lower than 0.3% and the recovery rate of mineral oil is higher than 98.43%. Solid phase products accounted for more than 70%, reached the maximum 17.04% at 450 °C, and then decreased to 15.87% at 500 °C. Aromatic hydrocarbons, as coking precursors, are transformed from a low ring to a high ring. Recycled mineral oil can reconfigure oil-based mud (OBM). The research results can provide a theoretical basis for process optimization.

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Production of bio-oil from coir pith via pyrolysis: kinetics, thermodynamics, and optimization using response surface methodology

Cited by 22 publications

References 30 publications

Optimization of biogenic supplementary cementitious materials in concrete prepared from East-Indian Lemon Grass (Cymbopogon flexuosus) and poultry litter using response surface methodology

Optimization of biogenic supplementary cementitious materials in concrete prepared from East-Indian Lemon Grass (Cymbopogon flexuosus) and poultry litter using response surface methodology

Study on pyrolysis law of shale gas oil-based drilling cuttings : kinetics and product characteristics

Study on Pyrolysis of Shale Gas Oil-Based Drilling Cuttings: Kinetics, Process Parameters, and Product Yield

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