Computer-aided environmental and exergy analysis as decision-making tools for selecting bio-oil feedstocks

Moreno-Sader, Kariana Andrea; Meramo, Samir; González-Delgado, Ángel Darío

doi:10.1016/j.rser.2019.05.044

Cited by 39 publications

(30 citation statements)

References 73 publications

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“…The exergy analysis provides key indicators to improve process performance such as exergy loss or irreversibilities, percentage of exergy loss and exergy efficiency, which can be calculated per stage or around the entire system. Assumptions reported by Moreno-Sader, Meramo-Hurtado & González-Delgado (2019) were considered in this work:…”

Section: Methodsmentioning

confidence: 99%

Computer-aided simulation and exergy analysis of TiO₂ nanoparticles production via green chemistry

Meramo

Moreno-Sader

González-Delgado

2019

PeerJ

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BackgroundThe production of photocatalytic nanoparticles such as TiO2 has received increasing interest for biomedical and wastewater treatment applications. However, the conventional synthesis of such materials faces several environmental concerns.MethodsIn this work, green synthesis is addressed to prepare TiO2 nanoparticles at large scale using Lemongrass (Cymbopogon citratus) and titanium isopropoxide (TTIP). This process was designed and modeled using computer-aided process engineering (CAPE) in order to obtain the extended mass/energy balances, as well as operating parameters. Process simulation was carried out using the commercial software Aspen Plus®. In addition, energy performance of large-scale nanoparticle production was analyzed to identify alternatives for process improvement from an exergetic point of view.ResultsThe production capacity of the plant was estimated as 1,496 t/y of TiO2 nanoparticles by the conversion of 32,675 t/y lemongrass and 5,724 t/y TTIP. Hence, the overall production yield is 0.26 kg TiO2/kg TTIP. Exergy analysis reported an overall exergy efficiency of 0.27% and an exergy loss of 159,824.80 MJ/h. These results suggest that such a process requires the implementation of process improvement strategies to reach a more sustainable design from energy and thermodynamic viewpoints.

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Section: Methodsmentioning

confidence: 99%

Computer-aided simulation and exergy analysis of TiO₂ nanoparticles production via green chemistry

Meramo

Moreno-Sader

González-Delgado

2019

PeerJ

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“…Moreno‐Sader, Meramo‐Hurtado, and Gonzalez‐Delgado (2019) provide insight into the use of banana/corn stover and microalgae (Chlorella) to produce bio‐oil. Computer‐aided tools enhanced the renewable energy‐based project decision making and calculating potential environmental impacts using The Waste Reduction (WAR) algorithm.…”

Section: Sustainabilitymentioning

confidence: 99%

Bioenergy from biofuel residues and waste

Sheehan

Murray

et al. 2020

Water Environment Research

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“…Governing equations: Exergetic analysis is governed by the equations described below [31,32]. There is an exergy loss in the exergy balance associated with system irreversibilities, corresponding to an estimate of the amount of destroyed exergy that flows throughout a bounded system [1].…”

Section: Exergy Analysismentioning

confidence: 99%

Assessing the Exergetic and Inherent Safety Performance of a Shrimp-Based Biorefinery via Computer-Aided Tools

2020

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Although shrimp processing wastes have been studied as source of high-value products at lab-scale, no contributions are found in the literature regarding the energetic and safety performance of shrimp-based biorefineries at pilot or large-scale. This works is focused on the inherent safety assessment and exergy analysis of a pilot-scale biorefinery designed to produce shrimp meat and four by-products: chitin, chitosan, nitrogenous extract, and astaxanthin. Total irreversibilities, exergy losses, exergy of wastes and utilities were calculated for stages and the overall process using mass and energy balances of the biorefinery. The hazards associated with chemicals and process conditions were analyzed through substance properties and process data. A Numerical Descriptive Inherent Safety Technique (NuDIST) score of 557.23 suggested a moderate level of risk for the biorefinery compared to other processes, reaching chemical and process safety scores of 185.88 and 371.35, respectively. Sections (b) and (c) were identified as major hotspots from a safety point of view. The overall exergy efficiency was quantified at 25.61%, which is higher than the chitosan-from-exoskeleton linear production chain (4.58%). The highest exergy losses were found on stages as deacetylation, fresh shrimp washing and deproteinization stages. The beheading stage most contributed to irreversibilities, with 98.315%, followed by sorting, with 1.653%. These results could identify opportunities for improvement from an exergy and safety point of view by mapping less efficient and hazardous stages.

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Computer-aided environmental and exergy analysis as decision-making tools for selecting bio-oil feedstocks

Cited by 39 publications

References 73 publications

Computer-aided simulation and exergy analysis of TiO₂ nanoparticles production via green chemistry

Computer-aided simulation and exergy analysis of TiO₂ nanoparticles production via green chemistry

Bioenergy from biofuel residues and waste

Assessing the Exergetic and Inherent Safety Performance of a Shrimp-Based Biorefinery via Computer-Aided Tools

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Computer-aided environmental and exergy analysis as decision-making tools for selecting bio-oil feedstocks

Cited by 39 publications

References 73 publications

Computer-aided simulation and exergy analysis of TiO2 nanoparticles production via green chemistry

Computer-aided simulation and exergy analysis of TiO2 nanoparticles production via green chemistry

Bioenergy from biofuel residues and waste

Assessing the Exergetic and Inherent Safety Performance of a Shrimp-Based Biorefinery via Computer-Aided Tools

Contact Info

Product

Resources

About

Computer-aided simulation and exergy analysis of TiO₂ nanoparticles production via green chemistry

Computer-aided simulation and exergy analysis of TiO₂ nanoparticles production via green chemistry