Fuel-cycle assessment of selected bioethanol production.

Wu, Mengmeng; Wang, M.; Hong, Hyun Pyo

doi:10.2172/925333

Cited by 55 publications

(62 citation statements)

References 16 publications

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“…The composition of the fuel used to provide this energy is about 80% coal and 20% Diesel. (Shapouri , Duffield, and Wang 2002); (Spath, Mann, and Kerr 1999); ; (Challman 2007); (Klara 2007); (Evans 2004); (Graboski 2002); (Daly 2008); (Susta, Seon, and Melaysia 2004); (USDL 2007); (Wu, Wang, and Huo 2006); ** Fuel production energy requirements are all provided by 100% by coal except for gasoline which is 81% oil and 19% coal Coal input; kWh output IGCC/ethanol (lb/gal); (kWh/gal) 14. 1 [6,7]; 9.86 [6,7] Power demand of pumps (kW) 11,190 [22] Gasification/Fuel Synthesis …”

Section: Very Different Results Were Found For the Vpms Of Gasificatimentioning

confidence: 99%

An Environmental Analysis of Illinois Coal Entry into the Transportation Market

Starkey

2011

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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Section: Very Different Results Were Found For the Vpms Of Gasificatimentioning

confidence: 99%

An Environmental Analysis of Illinois Coal Entry into the Transportation Market

Starkey

2011

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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“…It is noted that bioenergy system produced from forest residues (i.e., gasification and FT synthesis process) can save up to 88% GHG emission compared with a fossil fuel [65]. Corn stover ethanol blends (E85) offer substantial energy savings (94-95%) relative to those fueled with regular fossil gasoline and the cellulosic ethanol pathway mitigates 86-89% of GHG emissions [66].…”

Section: Biosyngas Synthesis Into Ethanolmentioning

confidence: 99%

“…The production cost of ethanol is dependent on both technical and economic parameters, such as the cost of feedstock, choice of feed-stock, energy consumption, conversion technology and efficiency, and the value of coproducts [24,32,66,75,78]. Haro et al [78] designed and developed the kinematic laboratory data which involves biomass pretreatment (poplar wood chips drying, size reduction to 4 cm) and gasification (atmospheric-pressure indirect circulating fluidized bed gasifier) to produce ethanol from wood chips.…”

Section: Lca Of Ethanol Produced From Biosyngasmentioning

confidence: 99%

“…A wide variation of production cost was also reported by several authors where the lignocellulosic ethanol production by thermochemical gasification processes were modeled (most of the studies modeled with Aspen Plus software) to estimate the production cost. The production cost varied from 0.27-1.25 $/L [24,66,75,[78][79][80][81][82]100]. The feedstock and capital cost are identified to be main hotspots [80,82].…”

Section: Lca Of Ethanol Produced From Biosyngasmentioning

confidence: 99%

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A Review of Life Cycle of Ethanol Produced from Biosyngas

Roy¹,

Dutta²

2013

Bioethanol

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This review compiled the life cycle (LC) studies on ethanol produced via gasification of biomass centering on greenhouse gas (GHG) emission and production cost to discuss their potential environmental and socioeconomic impacts. Numerous efforts have been made to evaluate the LC of ethanol produced with biosynthesis (gasification-microbial fermentation) and chemical synthesis (gasification-catalytic synthesis) of syngas produced from biomass (hereafter referred to biosyngas), and deals with system boundary, feedstock, energy paths and utilization of by-products to determine the environmental impacts as well as the production cost. It seems that most of the LC studies were conducted based on different research targets. Most of the reviewed studies support the environmental and economic viability of ethanol except for a few examples. A wide variation was observed in the reported GHG emission and production cost of ethanol which are dependent on the system boundary and assumptions, feedstock, conversion technologies and plant sizes. Consequently, in-depth studies are needed for each stage of the LC of ethanol from biosyngas for any future investment, commercial production, and sustainability. Moreover, a careful consideration has to be placed on the land use change and soil quality and their rebound effects if lignocellulosic biomass is to be put to use in the ethanol industry. LCA MethodologyLife cycle assessment (LCA) is a tool for evaluating environmental effects of a product, process, or activity throughout its life cycle Inventory analysisThe inventory analysis involves data collection on raw materials and energy consumption, emissions to air, water and soil, and solid waste generation. The inventory analysis is the most work intensive and time consuming phase in an LCA, mainly because of data collection. The data collection can be less time consuming if good databases are available and customers and suppliers are willing to help. Nowadays, many LCA databases are exists and can normally be bought together with LCA software. Data from databases can be used for processes that are not product specific, such as general data on the production of electricity, coal or packaging. However, site-specific data are required for product specific data. Inputs are energy (renewable and non-renewable), water, raw materials etc. Outputs are the products and co-products, and emission to air, water and soil and solid waste generation.

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“…The energy balance of biofuels production is nevertheless still a contentious issue, particularly for ethanol from corn [13,44,45]. It is often oversimplified, given the complex web of economic, technical, and political factors that need to taken fully into consideration; different assumptions and calculations can, therefore, lead to different results.…”

Section: Energy Balancementioning

confidence: 99%

Food versus Fuel: Toward a New Paradigm—The Need for a Holistic Approach

Rosillo-Calle

2012

ISRN Renewable Energy

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A key objective of this paper is to provide an assessment of the current and future situation on the "food versus fuel" debate and to contribute to possible alternatives to minimise or avoid future conflict. The debate has centred on three main areas: (i) food versus biofuel production, (ii) their positive and negative effects (i.e., GHG, climate change, and the broader environment), and (iii) a socioeconomic impact. The debate has been controversial because it has largely been driven by politics, ethical/moral considerations, and vested interests rather than by science. The paper focuses on food prices, land competition, GHG, energy balance, and energy subsidies and concerns with the rapid expansion of bioenergy for electricity and heat, climatic changes, the role of agriculture as a key factor, the potential of biomass energy resources, and the various alternatives to minimize or avoid conflict between food and fuel production. Biomass for energy is both "part of the problem and part of the solution." It proposes a holistic approach: a new paradigm that takes full account of the diverse and complex nature of biomass energy sources and states that the fundamental underlying causes are social injustice, inequality, waste, and so forth, rather than land competition for food and fuel.

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Fuel-cycle assessment of selected bioethanol production.

Cited by 55 publications

References 16 publications

An Environmental Analysis of Illinois Coal Entry into the Transportation Market

An Environmental Analysis of Illinois Coal Entry into the Transportation Market

A Review of Life Cycle of Ethanol Produced from Biosyngas

Food versus Fuel: Toward a New Paradigm—The Need for a Holistic Approach

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