Biofuels and fossil fuels: Life Cycle Analysis (LCA) optimisation through productive resources maximisation

Sobrino, Fernando Hernández; Rodríguez‐Monroy, Carlos; Pérez, José Luís Hernández

doi:10.1016/j.rser.2011.03.010

Cited by 36 publications

(11 citation statements)

References 4 publications

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“…Life-cycle assessment or analysis (LCA) is used for evaluating the environmental performance of a process, product, or activity, starting from raw material extraction, through manufacture, in processes of biomass to biofuels (Sobrino et al 2011). However, the present study identified major environmental impacts of the emission and reduction of CO 2 , Fig.…”

Section: Life-cycle Assessmentmentioning

confidence: 84%

Technical possibilities of bioethanol production from coffee pulp: a renewable feedstock

Gurram

Al-Shannag

Knapp

et al. 2015

Clean Techn Environ Policy

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The present paper investigated the technical possibilities of bioethanol production from coffee pulp in a sustainable manner. Coffee pulp is a largely underutilized waste stream and has the potential to become a bioethanol feedstock if processing is economically viable. This study aimed to characterize the chemical composition of coffee pulp with relevance to bioethanol production and to compare results to other bioethanol feedstocks. Based on the total sugar yield, we investigated bioethanol production using AspenPlus simulation software. In the sugar characterization part, total carbohydrates were measured after complete acid hydrolysis of dry pulp, while water-soluble carbohydrates were measured after acid hydrolysis of soxhlet extracted solutions. Moisture, lignin, and ash contents were measured gravimetrically after appropriate heating treatments. The results showed sugar contents, expressed as percentages of dry mass, as follows: 5.8, 5.2, 20.2, 4.2, and 4.7 % for arabinose, galactose, glucose, xylose, and mannose, respectively. Arabinose, galactose, and glucose were the only water-extracted simple sugars, at 1.0, 1.4, and 2.6 % of dry mass, respectively. AspenPlus simulation was based on processing 10,000 ton/day of coffee pulp. The results demonstrated sugar and ethanol yield of 2100 and 1050 ton/day, respectively. This would make annually profit of $0.13 million. The simulation estimated the capital investment cost was about $2 million. In order to satisfy the process economy, the process operation cost must be operated at minimum of $1.87 million annually. The life-cycle analysis showed the net value of energy of the whole process is an economical as well as the balance of CO 2 emission/reduction was on the environmental favor.

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Section: Life-cycle Assessmentmentioning

confidence: 84%

Technical possibilities of bioethanol production from coffee pulp: a renewable feedstock

Gurram

Al-Shannag

Knapp

et al. 2015

Clean Techn Environ Policy

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“…Waste to energy (WtE) and biomass to bioenergy (BtB) are both significant highlights within global green economy schemes, representing the use of 'renewable' waste and biomass (Kennes, et al, 2016;Vlachos et al, 2008). Recent green initiatives are hinged on the fact that these two resources can be an invaluable substitution for fossil based fuels both in the power and fuels industries since both can be converted into fuels, heat and power using various technologies (Batidzirai et al, 2012;Nkosi & Muzenda, 2014;Pantaleo & Shah, 2013;Pilusa & Muzenda, 2014;Sobrino et al, 2011). Biomass can be thermally or biochemically converted into renewable biofuels, while selected fractions of Municipal Solid Waste (MSW) like tyres, rubber and plastics can also be thermo chemically converted into heavy oils and fuels (Pilusa & Muzenda, 2014;Pradhan & Mbohwa, 2014).…”

Section: General Background: Waste To Energy and Bioenergy Systemsmentioning

confidence: 99%

A Review of the Application of Gis in Biomass and Solid Waste Supply Chain Optimization: Gaps and Opportunities for Developing Nations

2019

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The application of Geographical Information Systems (GIS) enhanced modelling techniques in biomass and solid waste supply chain problems is hinged on a common denominator for both systems: the spatial distribution of supply points and variability of resource quantities. Since the sustainability of bioenergy or waste-to-energy projects around these resources will be affected significantly by the cost of supplying them, it is important to optimize decisions around facility location, size and transport routes. GIS is an important tool that can be used to capture the spatial and temporal dynamics of the biomass and waste. It can then be used alone or integrated with other software tools, for strategic and tactical level optimization of biomass and solid waste supply chains. In as much as a lot of progress has been made globally in research and application of GIS enhanced modelling techniques in biomass and solid waste supply chains, developing nations have trailed behind. This explains why spatial and temporal waste or biomass statistics are not readily available in these areas. This paper reviews recent developments in the application of GIS in biomass and solid waste supply chain models, with the ultimate objective of identifying the gaps and opportunities that exist. It is especially biased towards the use of the biomass and waste in renewable or waste to energy schemes-a fast growing field within the green economy.

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“…However, in some cases, this absorption cannot be taken into consideration, depending on the origin of the raw material, for example, the absorbed CO 2 can be take into consideration if the feedstock is grown on wastelands or deserts, but it cannot been considered when it is grown on deforested land. 220 "Corn to ethanol" is one commonly debated pathway for firstgeneration biofuels, where the claimed renewability is offset against the fossil fuel requirement and the GHG emissions of the process. 221 Second-generation biofuel will potentially generate fewer GHG emissions and have a better environmental performance.…”

Section: Environmental Analysismentioning

confidence: 99%

Essential scientific mapping of the value chain of thermochemically converted second-generation bio-fuels

Zhang

2016

Green Chem.

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Biofuels and fossil fuels: Life Cycle Analysis (LCA) optimisation through productive resources maximisation

Cited by 36 publications

References 4 publications

Technical possibilities of bioethanol production from coffee pulp: a renewable feedstock

Technical possibilities of bioethanol production from coffee pulp: a renewable feedstock

A Review of the Application of Gis in Biomass and Solid Waste Supply Chain Optimization: Gaps and Opportunities for Developing Nations

Essential scientific mapping of the value chain of thermochemically converted second-generation bio-fuels

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