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LCA life Cycle Assessment

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https://www.readbyqxmd.com/read/28212024/environmental-multi-objective-optimization-of-the-use-of-biomass-resources-for-energy
#1
Carl Vadenbo, Davide Tonini, Thomas Fruergaard Astrup
Bioenergy is often considered an important component, alongside other renewables, to mitigate global warming and to reduce fossil fuel dependency. Determining sustainable strategies for utilizing biomass resources, however, requires a holistic perspective to reflect a wider range of potential environmental consequences. To circumvent the limitations of scenario-based life cycle assessment (LCA), we develop a multi-objective optimization model to systematically identify the environmentally-optimal use of biomass for energy under given system constraints...
February 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28209407/life-cycle-assessment-of-facile-microwave-assisted-zinc-oxide-zno-nanostructures
#2
D Papadaki, S Foteinis, G H Mhlongo, S S Nkosi, D E Motaung, S S Ray, T Tsoutsos, G Kiriakidis
The life cycle assessment of several zinc oxide (ZnO) nanostructures, fabricated by a facile microwave technique, is presented. Key synthesis parameters such as annealing temperature, varied from 90°C to 220°C, and microwave power, varied from 110W to 710W, are assessed. The effect of these parameters on both the structural characteristics and the environmental sustainability of the nanostructures is examined. The nanostructures were characterized by means of X-ray diffraction (XRD), focused ion beam scanning electron microscopy (FIB-SEM), ultraviolet-visible spectroscopy (UV-Vis), Photoluminescence (PL) and Brunauer-Emmett-Teller (BET) analysis...
February 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28207856/biodiesel-production-potential-from-fat-fraction-of-municipal-waste-in-makkah
#3
K Shahzad, A S Nizami, M Sagir, M Rehan, S Maier, M Z Khan, O K M Ouda, I M I Ismail, A O BaFail
In the Kingdom of Saudi Arabia (KSA), millions of Muslims come to perform Pilgrimage every year. Around one million ton of municipal solid waste (MSW) is generated in Makkah city annually. The collected MSW is disposed of in the landfills without any treatment or energy recovery. As a result, greenhouse gas (GHG) emissions and contamination of the soil and water bodies along with leachate and odors are occurring in waste disposal vicinities. The composition of MSW shows that food waste is the largest waste stream (up to 51%) of the total generated MSW...
2017: PloS One
https://www.readbyqxmd.com/read/28185853/sustainable-management-and-utilisation-of-concrete-slurry-waste-a-case-study-in-hong-kong
#4
Md Uzzal Hossain, Dongxing Xuan, Chi Sun Poon
With the promotion of environmental protection in the construction industry, the mission to achieve more sustainable use of resources during the production process of concrete is also becoming important. This study was conducted to assess the environmental sustainability of concrete slurry waste (CSW) management by life cycle assessment (LCA) techniques, with the aim of identifying a resource-efficient solution for utilisation of CSW in the production of partition wall blocks. CSW is the dewatered solid residues deposited in the sedimentation tank after washing out over-ordered/rejected fresh concrete and concrete trucks in concrete batching plants...
February 6, 2017: Waste Management
https://www.readbyqxmd.com/read/28183378/relative-emissions-intensity-of-dairy-production-systems-employing-different-functional-units-in-life-cycle-assessment
#5
S A Ross, C F E Topp, R A Ennos, M G G Chagunda
This study aimed to assess the merit and suitability of individual functional units (FU) in expressing greenhouse gas emissions intensity in different dairy production systems. An FU provides a clearly defined and measurable reference to which input and output data are normalised. This enables the results from life-cycle assessment (LCA) of different systems to be treated as functionally equivalent. Although the methodological framework of LCA has been standardised, selection of an appropriate FU remains ultimately at the discretion of the individual study...
February 10, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28157562/life-cycle-assessment-and-nutrient-analysis-of-various-processing-pathways-in-algal-biofuel-production
#6
Dongyan Mu, Roger Ruan, Min Addy, Sarah Mack, Paul Chen, Yong Zhou
This study focuses on analyzing nutrient distributions and environmental impacts of nutrient recycling, reusing, and discharging in algal biofuels production. The three biomass conversion pathways compared in this study were: hydrothermal liquefaction technology (HTL), hydrothermal hydrolysis pretreatment +HTL (HTP), and wet lipid extraction (WLE). Carbon, nitrogen, and phosphorous (C, N, P) flows were described in each pathway. A primary cost analysis was conducted to evaluate the economic performance. The LCA results show that the HTP reduced life cycle NOx emissions by 10% from HTL, but increased fossil fuel use, greenhouse gas emissions, and eutrophication potential by 14%, 5%, and 28% respectively...
January 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28132194/a-global-prospective-of-income-distribution-and-its-effect-on-life-cycle-assessment-of-municipal-solid-waste-management-a-review
#7
Pooja Yadav, S R Samadder
This study reviewed the municipal solid waste (MSW) composition, the management practices, and the use of life cycle assessment (LCA) tool for MSW management (MSWM) options in the various income group countries. LCA studies require inventory data, which is difficult to procure for any country including higher income group countries, and this issue gets compounded in low-income and lower middle-income group countries, which limits the implementation of LCA. This paper compared the use of LCA for MSWM between high-income and low-income group countries and also highlights the gap in using LCA for MSWM...
January 29, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28117158/life-cycle-assessment-of-constructed-wetland-systems-for-wastewater-treatment-coupled-with-microbial-fuel-cells
#8
Clara Corbella, Jaume Puigagut, Marianna Garfí
The aim of this study was to assess the environmental impact of microbial fuel cells (MFCs) implemented in constructed wetlands (CWs). To this aim a life cycle assessment (LCA) was carried out comparing three scenarios: 1) a conventional CW system (without MFC implementation); 2) a CW system coupled with a gravel-based anode MFC, and 3) a CW system coupled with a graphite-based anode MFC. All systems served a population equivalent of 1500 p.e. They were designed to meet the same effluent quality. Since MFCs implemented in CWs improve treatment efficiency, the CWs coupled with MFCs had lower specific area requirement compared to the conventional CW system...
January 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28112484/a-step-toward-regionalized-scale-consistent-agricultural-life-cycle-assessment-inventories
#9
Tiago G Morais, Ricardo Fm Teixeira, Tiago Domingos
Life cycle inventory (LCI) regionalization (i.e., the determination of input and output flows from production processes at a subcountry scale) is a priority in life cycle assessment (LCA) studies, particularly in the agri-food sector. Many regionalized LCAs fail to ensure that microlevel inventories are consistent with country-level aggregated data-or "scale consistent." They also fail to construct LCIs using international reference guidelines and trustworthy standardized data sources. This failure generates inaccuracies and biases in inventories and can compromise comparability among international LCA studies...
January 23, 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28091679/sustainability-of-renewable-fuel-infrastructure-a-screening-lca-case-study-of-anticorrosive-graphene-oxide-epoxy-liners-in-steel-tanks-for-the-storage-of-biodiesel-and-its-blends
#10
Govinda Chilkoor, Venkata K K Upadhyayula, Venkataramana Gadhamshetty, Nikhil Koratkar, Mats Tysklind
Biodiesel is a widely used fuel that meets the renewable fuel standards developed under the Energy Policy Act of 2005. However, biodiesel is known to pose a series of abiotic and biotic corrosion risks to storage tanks. A typical practice (incumbent system) used to protect the tanks from these risks include (i) coating the interior surface of the tank with a solvent-free epoxy (SFE) liner, and (ii) adding a biocide to the tank. Herein, we present a screening-level life-cycle assessment study to compare the environmental performance of a graphene oxide (GO)-epoxy (GOE) liner with the incumbent system...
January 16, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28068477/spatial-variability-and-uncertainty-of-water-use-impacts-from-u-s-feed-and-milk-production
#11
Andrew D Henderson, Anne C Asselin-Balençon, Martin Heller, Lindsay Lessard, Samuel Vionnet, Olivier Jolliet
This paper addresses water use impacts of agriculture, developing a spatially explicit approach tracing the location of water use and water scarcity related to feed production, transport, and livestock, tracking uncertainties and illustrating the approach with a case study on dairy production in the United States. This approach was developed as a step to bring spatially variable production and impacts into a process-based life cycle assessment (LCA) context. As water resources and demands are spatially variable, it is critical to take into account the location of activities to properly understand the impacts of water use, accounting for each of the main feeds for milk production...
February 8, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28062111/when-product-diversification-influences-life-cycle-impact-assessment-a-case-study-of-canned-anchovy
#12
Jara Laso, María Margallo, Pére Fullana, Alba Bala, Cristina Gazulla, Ángel Irabien, Rubén Aldaco
The anchovy canning industry is one of the most important economic resources of the Cantabria region in Spain. However, environmental, economic and social problems over the past years have forced companies to apply marketing strategies, develop product diversification, create new products and introduce them in new "green markets". Launching Cantabrian canned anchovies into more sustainable markets requires measuring the environmental performance using Product Category Rules (PCRs) and Environmental Product Declarations (EPDs)...
January 3, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28056373/life-cycle-assessment-of-rice-straw-utilization-practices-in-india
#13
Shveta Soam, Pal Borjesson, Pankaj K Sharma, Ravi P Gupta, Deepak K Tuli, Ravindra Kumar
The aim of this study is to find potential utilization practice of rice straw in India from an environmental perspective. Life cycle assessment (LCA) is conducted for four most realistic utilization practices of straw including: (1) incorporation into the field as fertilizer (2) animal fodder (3) electricity (4) biogas. The results show that processing of 1 ton straw to electricity and biogas resulted in net reduction of 1471 and 1023kg CO2 eq., 15.0 and 3.4kg SO2 eq. and 6.7 and 7.1kg C2H6 eq. emissions in global warming, acidification and photochemical oxidation creation potential respectively...
March 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28050118/environmental-and-health-impacts-of-using-food-waste-as-animal-feed-a-comparative-analysis-of-food-waste-management-options
#14
Ramy Salemdeeb, Erasmus K H J Zu Ermgassen, Mi Hyung Kim, Andrew Balmford, Abir Al-Tabbaa
The disposal of food waste is a large environmental problem. In the United Kingdom (UK), approximately 15 million tonnes of food are wasted each year, mostly disposed of in landfill, via composting, or anaerobic digestion (AD). European Union (EU) guidelines state that food waste should preferentially be used as animal feed though for most food waste this practice is currently illegal, because of disease control concerns. Interest in the potential diversion of food waste for animal feed is however growing, with a number of East Asian states offering working examples of safe food waste recycling - based on tight regulation and rendering food waste safe through heat treatment...
January 1, 2017: Journal of Cleaner Production
https://www.readbyqxmd.com/read/28046072/effects-of-protease-addition-and-replacement-of-soybean-meal-by-corn-gluten-meal-on-the-growth-of-broilers-and-on-the-environmental-performances-of-a-broiler-production-system-in-greece
#15
Ilias Giannenas, Eleftherios Bonos, Vasileios Anestis, Georgios Filioussis, Dimitrios K Papanastasiou, Thomas Bartzanas, Nikolaos Papaioannou, Athina Tzora, Ioannis Skoufos
An experimental study was conducted to examine the combined effects of adding a dietary protease, reducing the levels of soybean meal (SBM) and introducing corn gluten meal (CGM) in the ration of a group of broilers reared on a commercial Greek farm. Five hundred forty chicks were divided into three dietary treatments with six replicates of thirty birds each. The first group (Control) was fed a conventional diet based on corn and soybean meal, containing 21% w/w crude protein (CP). The second group (Soy-Prot) was supplied a corn and SBM-based diet containing a lower level of CP (20% w/w) and 200 mg of the protease RONOZYME® Proact per kg of feed...
2017: PloS One
https://www.readbyqxmd.com/read/28045111/analysis-of-the-global-warming-potential-of-biogenic-co2-emission-in-life-cycle-assessments
#16
Weiguo Liu, Zhonghui Zhang, Xinfeng Xie, Zhen Yu, Klaus von Gadow, Junming Xu, Shanshan Zhao, Yuchun Yang
Biomass is generally believed to be carbon neutral. However, recent studies have challenged the carbon neutrality hypothesis by introducing metric indicators to assess the global warming potential of biogenic CO2 (GWPbio). In this study we calculated the GWPbio factors using a forest growth model and radiative forcing effects with a time horizon of 100 years and applied the factors to five life cycle assessment (LCA) case studies of bioproducts. The forest carbon change was also accounted for in the LCA studies...
January 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28039825/environmental-impact-of-biomass-based-polygeneration-a-case-study-through-life-cycle-assessment
#17
Kuntal Jana, Sudipta De
Multi-generation or polygeneration is considered to be a potential sustainable energy solution. To assess environmental sustainability of multi-generation, life cycle assessment (LCA) is a useful tool. In this paper, environmental impact of polygeneration using an agro waste (rice straw) is assessed by LCA. Then it is compared with stand alone conventional plants with same utility outputs. Power, ethanol, heating and cooling are utility outputs of the polygeneration plant. System boundary for this polygeneration is defined for surplus biomass only...
March 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28027813/environmental-and-economic-evaluation-of-pre-disaster-plans-for-disaster-waste-management-case-study-of-minami-ise-japan
#18
Tomohiro Tabata, Yohei Wakabayashi, Peii Tsai, Takashi Saeki
Although it is important that disaster waste be demolished and removed as soon as possible after a natural disaster, it is also important that its treatment is environmentally friendly and economic. Local municipalities do not conduct environmental and economic feasibility studies of pre-disaster waste management; nevertheless, pre-disaster waste management is extremely important to promote treatment of waste after natural disasters. One of the reasons that they cannot conduct such evaluations is that the methods and inventory data required for the environmental and economic evaluation does not exist...
December 24, 2016: Waste Management
https://www.readbyqxmd.com/read/28024751/assessing-the-environmental-impacts-of-freshwater-thermal-pollution-from-global-power-generation-in-lca
#19
Catherine E Raptis, Justin M Boucher, Stephan Pfister
Freshwater heat emissions from power plants with once-through cooling systems constitute one of many environmental pressures related to the thermoelectric power industry. The objective of this work was to obtain high resolution, operational characterization factors (CF) for the impact of heat emissions on ecosystem quality, and carry out a comprehensive, spatially, temporally and technologically differentiated damage-based environmental assessment of global freshwater thermal pollution. The aggregation of CFs on a watershed level results in 12...
December 23, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/28002664/evaluating-the-life-cycle-environmental-benefits-and-trade-offs-of-water-reuse-systems-for-net-zero-buildings
#20
Vaclav Hasik, Naomi E Anderson, William O Collinge, Cassandra L Thiel, Vikas Khanna, Jason Wirick, Richard Piacentini, Amy E Landis, Melissa M Bilec
Aging water infrastructure and increased water scarcity have resulted in higher interest in water reuse and decentralization. Rating systems for high-performance buildings implicitly promote the use of building-scale, decentralized water supply and treatment technologies. It is important to recognize the potential benefits and trade-offs of decentralized and centralized water systems in the context of high-performance buildings. For this reason and to fill a gap in the current literature, we completed a life cycle assessment (LCA) of the decentralized water system of a high-performance, net-zero energy, net-zero water building (NZB) that received multiple green building certifications and compared the results with two modeled buildings (conventional and water efficient) using centralized water systems...
January 17, 2017: Environmental Science & Technology
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