Life cycle assessment applied on alternative production of carbon-based sorbents – A comparative study

Výtisk, Jan; Čespiva, Jakub; Jadlovec, Marek; Kočí, Václav; Honus, Stanislav; Ochodek, Tadeáš

doi:10.1016/j.susmat.2022.e00563

Cited by 8 publications

(4 citation statements)

References 46 publications

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“…To ensure consistency in the functional unit, the input and output values for the second half of the process (i.e., HTC process) were multiplied 400 times to equate to the functional unit, i.e., 1000 g (1 kg) of biomass used. We assumed that the embodied energy of the utilized technologies is negligible based on the reported study by Výtisk and co-researchers [18] because such systems possessed very low embodied energy compared to HTC operational energy use. The origin of water resources was stipulated to be in the ground by Gulf Cooperation Council because it is crucial to note that Saudi Arabia, like many other arid and desert regions, heavily relies on groundwater for its water supply due to limited surface water resources.…”

Section: Goal and Scope Definitionmentioning

confidence: 99%

Life Cycle Assessment of Production of Hydrochar via Hydrothermal Carbonization of Date Palm Fronds Biomass

Yin,

El-Harbawi,

Jiang

2023

Materials

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This study presents novel life cycle assessment (LCA) findings on hydrochar production from Saudi-Arabia-based date palm fronds biomass waste using hydrothermal carbonization (HTC). The LCA procedure incorporated normalization, weighting, and improvement assessment. The system boundary encompassed water consumption and energy requirements within a lab setting representing a gate-to-gate process. The OpenLCA 1.11.0 software with the European Life Cycle Database 3.2 (ELCD 3.2) was utilized for the study and we employed the ReCiPe Midpoint (H) 2016 and Environmental Footprint 3.0 (EF 3.0) impact assessment methods. The results indicated that fossil fuel usage represented the most significant impact category with the HTC and drying processes identified as major contributors. It was also observed that the HTC process exerted far greater detrimental impacts on the environment than the biomass grinding process. The overwhelming impact of fossil fuel resources could be mitigated by optimizing the batches of biomass or hydrochar samples in each operation, which could alleviate fossil fuel consumption by up to 94%. The findings emphasize the need for targeted interventions to mitigate the environmental burden and contribute to sustainable hydrochar production.

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Section: Goal and Scope Definitionmentioning

confidence: 99%

Life Cycle Assessment of Production of Hydrochar via Hydrothermal Carbonization of Date Palm Fronds Biomass

Yin,

El-Harbawi,

Jiang

2023

Materials

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“…Life Cycle Assessment (LCA) is a systematic methodology used to evaluate the environmental impacts associated with the entire life cycle of a product, process, or service. It provides a comprehensive assessment of various environmental aspects, such as resource consumption, energy use, emissions, and waste generation, from the extraction of raw materials to final disposal or recycling [41]. LCA considers the entire life cycle stages, including raw material acquisition, manufacturing, transportation, product use, and endof-life treatment.…”

Section: Life Cycle Assessment Of Bsflmentioning

confidence: 99%

Integrating Life Cycle Assessment and Machine Learning to Enhance Black Soldier Fly Larvae-Based Composting of Kitchen Waste

Arshad,

Saeed,

Raza

et al. 2023

Sustainability

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Around 40% to 60% of municipal solid waste originates from kitchens, offering a valuable resource for compost production. Traditional composting methods such as windrow, vermi-, and bin composting are space-intensive and time-consuming. Black soldier fly larvae (BSFL) present a promising alternative, requiring less space and offering ease of handling. This research encompasses experimental data collection, life cycle assessment, and machine learning, and employs the Levenberg–Marquardt algorithm in an Artificial Neural Network, to optimize kitchen waste treatment using BSFL. Factors such as time, larval population, aeration frequency, waste composition, and container surface area were considered. Results showed that BSFL achieved significant waste reduction, ranging from 70% to 93% by weight and 65% to 85% by volume under optimal conditions. Key findings included a 15-day treatment duration, four times per day aeration frequency, 600 larvae per kilogram of waste, layering during feeding, and kitchen waste as the preferred feed. The larvae exhibited a weight gain of 2.2% to 6.5% during composting. Comparing the quality of BSFL compost to that obtained with conventional methods revealed its superiority in terms of waste reduction (50% to 73% more) and compost quality. Life cycle assessment confirmed the sustainability advantages of BSFL. Machine learning achieved high accuracy of prediction reaching 99.5%.

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“…Syngas can also be used as a building block for chemical synthesis [16][17][18]. Furthermore, residues could be used as biochar [19,20] or further upgraded for use as sorbents [21][22][23]. The majority of countries, with the exception of those dominating in hydropower, are observing an increased trend in the use of bioenergy derived from biomass, which constitutes more than half of the energy supply [24].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Gasifying Agents in 3D Downdraft Gasification for Enhanced Gas Composition, Combustion, and CO2 Utilization

Mehmood,

Tahir,

Saeed

et al. 2023

Fire

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The depletion of fossil-based fuels, fluctuating fuel market, and environmental deterioration demand an aggressive approach towards the advancement of renewable energy technologies. By the time reliable technology for a clean and abundant energy supply is established, existing sources must be economized. Biomass gasification is the way forward in that direction. CFD modeling shows promise in the development of advanced gasification systems. A simplified 3D CFD model of a downdraft gasifier is developed to investigate the effect of gasifying agent composition on the quality of syngas. Simulation results are compared with published experimental data and found to be in reasonably good agreement. Mixing CO2 with a gasification agent is also investigated as a possible carbon capture and utilization (CCU) strategy. An air-steam mixture is used as a base-case gasification agent. Firstly, the effect of air-to-steam ratio on syngas composition is investigated. Secondly, the effect of oxygen and mixing CO2 with a gasification agent is investigated in two separate cases. A 50%-50% air-steam mixture is found to produce the best quality syngas. Oxygen is found to have a negligible impact on the quality of syngas. The air-steam-CO2 = 23%-50%-15% mixture is found to be optimum regarding syngas quality.

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Life cycle assessment applied on alternative production of carbon-based sorbents – A comparative study

Cited by 8 publications

References 46 publications

Life Cycle Assessment of Production of Hydrochar via Hydrothermal Carbonization of Date Palm Fronds Biomass

Life Cycle Assessment of Production of Hydrochar via Hydrothermal Carbonization of Date Palm Fronds Biomass

Integrating Life Cycle Assessment and Machine Learning to Enhance Black Soldier Fly Larvae-Based Composting of Kitchen Waste

Optimization of Gasifying Agents in 3D Downdraft Gasification for Enhanced Gas Composition, Combustion, and CO2 Utilization

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