The biorefinery concept is attractive. Increasing international concerns over issuessuch as climate change have led to political as well as social pressures for a shift fromfossil fuels to renewable resources and biomass is one abundant renewable resource.Biomass has the potential of supplying many of the fuels and chemicals which arecurrently dependent on petroleum. Much development is still needed in the field ofbiorefineries and a systematic approach to evaluate and compare process technologiesand to suggest optimizations seems necessary.The objective of this thesis is to develop entropy analysis as a possible evaluation toolfor optimization of biorefinery processes. This is a new application of entropyanalysis which is rarely discussed in the literature. The scientific basis of the entropyanalysis is described and the proposed methodology is explained. The position ofentropy analysis among other system analysis tools such as exergy analysis and lifecycle assessment is discussed along with entropy analysis earlier applications.A case study is introduced which is the IBUS (Integrated Biomass Utilization System)project in Denmark. The idea in IBUS is to integrate the biomass plant with a powerplant to utilize the surplus steam from the power plant for the internal use of thebiorefinery. The suggested method of entropy analysis is applied to this case study tocompare different processes for production of ethanol along with solid biofuel andanimal feed from Danish wheat straw. The evaluation is a gate to gate analysis inwhich production of energy carriers are also included in addition to biorefining ofwheat straw. A parallel life cycle assessment study with equivalent system boundariesis also carried out to compare the results with a conventional environmental systemsanalysis method.The results from the entropy analysis of the IBUS case study show that fermentationof C5 and C6 sugars by yeast is the most efficient process thermodynamically whilefermentation of only C6 sugars by yeast is the least efficient among the three casesstudied. Integration of the biorefinery with a coal fired CHP plant is identified as awise choice by the results of the entropy analysis method.For the IBUS process alternatives investigated in this study, the entropy results andthe LCA results (aggregated environmental load) are in correlation; entropy results areconsistent with weighting results based on two different weighting methods namelyEco indicator 99 and EPS 2000. Entropy generation is also in correlation withproduction cost for the processes analyzed in this evaluation. Another observation isthat cooling in the biorefining process contributes highly in the generation of entropy.This potential improvement option is not surfaced by the LCA conducted.The potential for further investigation and development of the tool is recognizedreflecting on some interesting observations in the results. Improvement of the tool ishighly possible for example by supplementing other implications of entropy inprocess design such as "waste potential entropy" concept which is developed as aneco-toxicity measure. / Uppsatsnivå: D

A normalização é uma importante etapa da Avaliação do Ciclo de Vida, uma vez que fornece uma unidade comum, permitindo a comparação das diferentes categorias de impacto. A referência de normalização mais utilizada considera o impacto das atividades totais da sociedade num certo período de tempo. Estes dados são inexistentes no Brasil para impactos regionais e locais, de forma que este trabalho objetivou iniciar o preenchimento dessa lacuna, com os fatores de normalização para as categorias \"acidificação\" e \"eutrofização\", no estado de São Paulo. Tais fatores foram calculados com base em um inventário das estimativas anuais de aporte ao meio ambiente de substâncias contribuintes para estas categorias, cuja realização possibilitou a análise do estado da arte desses impactos em São Paulo e dos setores responsáveis pela geração das substâncias contribuintes. Conforme esperado, os fatores (ou referências) de normalização encontrados foram diferentes daqueles por hora utilizados no Brasil, baseados em dados europeus. Entre as razões que explicam esta diferença estão a baixa emissão de \'SO IND.X\' devido a matriz energética brasileira, o uso de etanol com combustível e o despejo de esgoto sem tratamento (ou tratamento inadequado). / Normalization is an important step in Life Cycle Assessment as it provides a common unit, allowing the comparison of the different impact categories. The normalization reference most widely used considers the \"background\" impact from the total activities of society in a chosen reference period. These data are inexistent in Brazil for regional and local impacts so that this work aimed to begin filling this lack, first developing normalization factors for the categories \"acidification\" and \"eutrophication\" in the state of Sao Paulo. These factors were calculated from an inventory of the annual load to the environment of substances contributing to these categories; the production of this inventory allowed the analysis of a) the state of the art of these impacts in Sao Paulo and b) the sectors responsible for the generation of contributors. As expected, normalization factors (or references) were different from those currently used in Brazil, based on European data. Among the reasons for this difference are lower \'SO IND.X\' emissions due to the Brazilian energy matrix, the use of ethanol as fuel and disposal of sewage without treatment (or mistreatment).

Environmental releases of chemical compounds from Pharmaceuticals and Personal Care Products (PPCPs) are receiving growing attention in the scientific community. Most research suggests that the main pathway for these substances to reach the environment is via Wastewater Treatment Plants (WWTPs) due to the effluents from households, industry and hospitals, which can contain substantial amounts of these compounds. Many of these contaminants are poorly treated in conventional WWTPs and are often discharged into the environment with the effluent and sludge, posing ecotoxicological risks to the wildlife and humans. Therefore, it is necessary to limit their release into the environment by controlling their discharge from WWTPs. This can be achieved by adopting advanced wastewater treatment techniques, currently not used as there are no legislative limits on PPCP compounds. However, as the scientific evidence is growing on their adverse impacts, it is only a matter of time before their advanced treatment becomes compulsory. To help guide future developments and inform policy in this area, this work considered a range of advanced treatment techniques with the aim of identifying the most sustainable options. Adopting a life cycle approach and considering all three dimensions of sustainability (economic, environmental and social), nine technologies were assessed on sustainability: four for WWTP effluent and five for sludge treatment. The advanced wastewater treatment methods considered are: (i) granular activated carbon, (ii) nanofiltration, (iii) solar photo-Fenton, and (iv) ozonation. The sludge treatment techniques comprise: (i) anaerobic digestion of sludge for agricultural application; (ii) sludge composting, also for agricultural application; (iii) incineration; (iv) pyrolysis; and (v) wet air oxidation. They were assessed on sustainability using over 28 indicators, some of which were also used to evaluate the implication of different treatment techniques for the energy-water-food (EWF) nexus. Multi-Criteria Decision Analysis (MCDA) was applied to aggregate the sustainability indicators into an overall sustainability index for each alternative and identify the most sustainable option(s). The results suggest that, among the four techniques considered for advanced effluent treatment, nanofiltration and granular activated carbon have the lowest life cycle environmental impacts. Although not preferable at all operating ranges, they have the lowest burdens and are, overall, most sustainable. The latter also has the lowest impact on the EWF nexus at mean operating parameter, and is the preferred option as the treated effluent can be used for potable water due lower concerns over the presence of PPCPs. However, the results also suggest that, from the ecotoxicological point of view, there is little benefit in using any of the advanced wastewater treatment techniques assessed. This is due to the life cycle ecotoxicological impacts from the treatment itself being similar or even higher than for the effluent released into the environment untreated. For sludge treatments, anaerobic digestion and pyrolysis are environmentally and economically preferable techniques. The former is the best with respect to the EWF nexus due to the recovery of energy and agricultural fertilizers. In relation to social aspects, wet air oxidation is amongst the most desirable for high resource recovery, together with the two former techniques. The heavy metals content in the sludge applied on agricultural soils is a major concern for freshwater ecotoxicity potential, posing risks orders of magnitude higher than PPCP compounds.

This research addresses life cycle environmental and economic sustainability in the baby food sector. In the UK, this sector has been growing rapidly, expanding by around 30% between 2009 and 2014, by which time it was worth an estimated £181 million per year. This growth sits within a context of high emissions from the food sector: in 2015, UK net GHG emissions were estimated to be 496 million tonnes (Mt) and the domestic food chain was responsible for 115 Mt CO2 eq. emissions. However, within this overall food chain, very little is known about the sustainability of the baby food sector, with almost no prior literature in the area. The research presented here begins with market research to identify the characteristics of products available in the ready-made food market, in which wet and dry products in jars and pouches dominate sales. Subsequently, 12 representative products are selected from those available on the market and each is assessed in detail to establish its environmental and economic impacts using life cycle assessment (LCA), life cycle costing (LCC) and value added (VA) assessment. The findings of these product-level assessments are then compared to home-made equivalents and finally scaled up according to sales volumes to provide an overall view of the baby food sector as a whole. Wet and dry variants of ready-made porridge products are assessed first as the most commonly consumed breakfast option. The dry product is shown to have 5%-70% the impacts of the wet, on average, and the importance of product formulation is clear: for dry porridge, reformulation could reduce impacts by up to 67%. For the wet porridge, switching from glass jars to plastic pouches is also shown to decrease impacts by up to 89%. Assessment of 11 wet ready-made products demonstrates that the highest impacts are found in spaghetti Bolognese and salmon risotto, and that raw materials are the major hotspot of the life cycle, contributing 12-69%, followed by manufacturing at 2-49%. When combined into a range of weekly diets limited differences are observed between diets, except in cases where dairy-free diets result in compensatory increases in meat consumption. When the aforementioned selection of ready-made products is compared to its home-made equivalent, the home-made options are shown to have lower impacts by 50% to 17 times. This is due to the avoidance of manufacturing and extra packaging stages, as well as shorter supply chains resulting in less waste overall. At the product level, the LCC of ready-made meals ranges from £0.08 to £0.26 per 125 g product, compared to £0.02-£0.20 for the home-made equivalents. Value added is, on average, approximately four times higher for ready-made meals than homemade, illustrating the potential profit of the sector. Annually, the ready-made baby food sector has an LCC of £40m and carbon footprint of 109 kt CO2 eq. This carbon footprint represents only 0.1% of the UK food and drinks sector. The results of this research show that considerable improvements can be made to the environmental and economic sustainability of baby foods, both ready- and homemade, while home-made options tend to have lower costs and environmental impacts. The outputs provide benchmarking and improvement opportunities for industry and government, as well as insight for consumers.

Les travaux de cette thèse se focalisent sur l’élaboration du cadre méthodologique de l’Analyse du cycle de vie territoriale spatialisée (ACVTS), qui intègre la spatialisation dans le calcul des impacts environnementaux, et son application sur un territoire d’étude dans une optique d’aide à la décision. Elle s’organise autour de : (1) la construction du cadre méthodologique de l’ACVTS ; (2) la spatialisation des émissions azotées ; (3) le développement d’une méthode de caractérisation régionalisée de l’eutrophisation ; (4) la comparaison des résultats d’ACVTS et d’ACV. L’ACVTS permet une évaluation des impacts du territoire plus proches des impacts réels et permet de cartographier émissions et impacts pour l’aide à la décision. Gourmande en temps, données et expertise, elle nécessite de bien définir le questionnement de l’étude. / This thesis focuses on development of the spatialized territorial life cycle assessment (STLCA) method, which spatializes environmental-impact calculation, and on its application to a case study to help decision making. The thesis is organized into four main chapters: (1) building the STLCA framework, (2) spatializing nitrogen emissions, (3) developing regionalized characterization factors for eutrophication and (4) comparing STLCA and LCA results. STLCA can estimate environmental impacts of a territory that are more similar to real impacts and can map emissions and impacts to help decision making. However, STLCA requires time, data and expertise to be applied; thus, it is necessary to determine its suitability for the goals of a given study before using it.

La gestion des déchets ménagers concentre des enjeux opérationnels, stratégiques et environnementaux. On observe depuis quelques années une montée en puissance des dispositifs de quantification des impacts environnementaux, qui ajoutent l’espace du calcul environnemental aux espaces déjà constitués et instrumentés des calculs techniques et économiques. Différents outils d’évaluation environnementale peuvent être utilisés tels que l’Empreinte Écologique, le Bilan Carbone ou encore l’Analyse du Cycle de Vie (ACV). Au regard de sa capacité à évaluer des enjeux globaux et multiples, l’ACV est l’outil le plus souvent utilisé. L’ACV évalue les impacts environnementaux potentiels d’un système (produit ou service) en identifiant et en quantifiant les entrants et les sortants de ce système et en les traduisant en impacts environnementaux potentiels. Elle évalue de manière pertinente les impacts globaux, tels que le changement climatique ou la déplétion de la couche d’ozone, mais est peu adaptée à une évaluation des impacts locaux tels que l’acidification, l’eutrophisation ou encore la toxicité du fait de la nécessaire finesse de prise en compte des conditions de l’émission engendrant potentiellement ces impacts. Ce travail de thèse vise à développer une méthodologie d’évaluation « spatialisée » des impacts environnementaux locaux que sont la toxicité (ou atteinte à la santé humaine) et les odeurs et leur intégration à la méthodologie d’ACV. L’intérêt et les limites de ce développement méthodologique sont mis en évidence dans une application de l’évaluation des performances environnementales de systèmes de gestion des déchets municipaux, secteur d’activité soumis à une évaluation environnementale systématique lors de la planification départementale et théâtre de nombreuses controverses dont l’évaluation des impacts locaux est souvent le cœur. La méthodologie d’évaluation développée dans le cadre de cette thèse repose sur l’approche Site Dependent (modélisation de l’impact en considérant les caractéristiques spatio-temporelles de la source d’émission et du milieu impacté) et permet de prendre en compte le devenir de la substance et les conditions d’exposition pour déterminer, dans un premier temps, l’occurrence de l’impact et, dans un deuxième temps, son intensité. Ce développement méthodologique, pour intégrer la différenciation spatiale lors de l’évaluation des impacts, est appliqué à deux impacts locaux reflétant des problématiques locales fortes pour beaucoup de secteurs industriels mais notamment pour le secteur du traitement des déchets : la toxicité et les odeurs. Concernant l’évaluation de la toxicité, il s’agit de caractériser l’impact de manière plus robuste que cela est classiquement fait en ACV en intégrant les caractéristiques spatiales. Pour l’impact odeurs, il s’agit de construire une première voie vers la quantification de cet impact, non évalué par les outils génériques d’évaluation environnementale. / Municipal solid waste management focuses operational, strategic and environmental issues. We observed recently a development of measures to assess environmental impacts, which add the environmental impact to technical and economical calculations. Different environmental assessment tools can be used such as the Ecological Footprint, Carbon Footprint or Life Cycle Assessment (LCA). Due to its ability to assess global and multiple issues, LCA is most often used. LCA assesses potential environmental impacts of a system or a product identifying and quantifying inputs and outputs of the system and converting them into potential environmental impacts. LCA is a relevant method to assess global impacts such as climate change or ozone layer depletion. But this method is not suitable to assess local impacts such as acidification, eutrophication or human toxicity due to the required precision to take into account the conditions of emission that potentially cause the impacts. This PhD work aims to develop a methodology of spatial assessment for two local environmental impacts (human toxicity and odours) and their integration to LCA. Advantages and limitations of this development are highlighted in the assessment of environmental performances of municipal solid waste systems. This sector is subjected to systematic environmental assessment during administrative planning and is prone the numerous controversies in which assessment of local impacts is often the heart of the matter. The methodology developed is based on the Site Dependent approach (modeling of impact with consideration of spatial and temporal characteristics of the emission source and the impacted environmental) and allows to take into account the fate of the substance and the exposure conditions to determine firstly the occurrence of the impact and secondly its intensity. This methodology aiming to integrate spatial differentiation in assessment of impacts, is applied to two local impacts reflecting strong local issues for many sectors, but particularly in the sector of waste treatment: human toxicity and odours. For the human toxicity assessment, the aim is to characterize impacts in more solid way than in conventional LCA that integrates spatial characteristics. For impact odour, the aim is to develop a first approach to quantify this impact, but not assessed by generic tools used for environmental assessment.

Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico / O SubmÃdio SÃo Francisco à um dos principais polos produtores de melÃo amarelo para o mercado interno brasileiro. Sabendo que as atividades agrÃcolas impactam o meio ambiente, este estudo objetiva avaliar os impactos ambientais, por meio da avaliaÃÃo do ciclo de vida, na produÃÃo de 1 kg de melÃo cultivado no SubmÃdio SÃo Francisco, sob dois sistemas de produÃÃo: convencional e conservacionista. Os dados referentes ao sistema de produÃÃo convencional de melÃo foram obtidos em campo, com entrevistas conduzidas no PerÃmetro Irrigado Salitre (Juazeiro-BA), jà os dados referentes aos sistemas conservacionistas foram obtidos em uma unidade experimental da Embrapa SemiÃrido (Petrolina-PE). Realizou-se uma anÃlise de sensibilidade, considerando quatro cenÃrios: C1 (transporte), C2 (embalagem) e C3 (fertilizantes) e C4 (combinaÃÃo de C1, C2 e C3). O sistema de produto em estudo abrange a produÃÃo de sementes e mudas de melÃo, a produÃÃo agrÃcola dos frutos, a embalagem e transporte do melÃo, e a produÃÃo e transporte dos insumos utilizados nestes processos. Aplicou-se o mÃtodo Recipe na avaliaÃÃo das categorias: MudanÃa ClimÃtica, AcidificaÃÃo do Solo, EutrofizaÃÃo de Ãguas Doces, EutrofizaÃÃo Marinha e Escassez HÃdrica; e o mÃtodo Usetox para avaliaÃÃo da Toxicidade. Os resultados indicaram que, em longo prazo, os sistemas conservacionistas apresentam menores impactos ambientais. Mostraram ainda que as categorias avaliadas sÃo afetadas por trÃs principais processos: transporte dos frutos, embalagem dos frutos e produÃÃo de fertilizantes. Com base na anÃlise de sensibilidade, observa-se que no cenÃrio 4 (que combina a substituiÃÃo das caixas de papelÃo, a utilizaÃÃo de um transporte misto e a supressÃo do uso de fertilizantes nitrogenados) ocorre a maior reduÃÃo dos impactos em todas categorias avaliadas. / The Creative Commons License is a leading producer of yellow melon pole for the Brazilian domestic market. Knowing that agricultural activities impact the environment, this study aims to evaluate the environmental impacts through the evaluation of the life cycle, to produce 1 kg of melon grown in Creative Commons License, under two production systems: conventional and conservation. The data relating to conventional melon production system were obtained in the field, with interviews conducted in the Irrigated Perimeter Salitre (Juazeiro-BA), since the data for the conservation systems were obtained in a experimental unit Embrapa Semi-Arid (Petrolina-PE). We performed a sensitivity analysis considering four scenarios: C1 (transport), C2 (packaging) and C3 (fertilizers) and C4 (combination of C1, C2 and C3). The product system under study covers the production of seeds and melon seedlings, agricultural production of fruits, packaging and transport of melons, and the production and transport of inputs used in these processes. Recipe applied the method in the evaluation of the categories: Climate Change, Soil Acidification, Eutrophication of Freshwater, Marine Eutrophication and Water Scarcity; and the Usetox method to assess toxicity. The results indicated that in the long run, conservationists systems have lower environmental impacts. They are shown even if the evaluated categories are affected by three main processes: transport of fruit, packaging of fruits and fertilizer production. Based on the sensitivity analysis, it is observed that the scenario 4 (combining the replacement of the cartons, the use of a mixed transport and the removal of nitrogen fertilizer use) is the greatest reduction of impacts in all categories evaluated.

Este trabalho desenvolve um método de seleção de fronteiras para Análise de Ciclo de Vida (ACV) de sistemas que emitem componentes tóxicos. Isto envolve o desenvolvimento de um modelo de predição de concentração e dose de poluentes emitidos de chaminés, que tem a vantagem de ser simples e não requerer grande número de dados de entrada. Esse modelo e mais os dados de valoração econômica de danos ambientais disponíveis na literatura, compõem o modelo geral de estimativa de custos devido à emissão de poluentes, ou seja, a Análise de Custos em Ciclo de Vida (ACCV). O modelo geral é então usado para definir as fronteiras do sistema de ACCV. Demonstra-se a aplicação do novo método em um ciclo de vida hipotético de produção de celulose. / This work develops a method for Boundary Selection (BS) for Life Cycle Assessment (LCA) of systems with stacks emitting toxics compounds. The new approach involves the development of a model of concentrations and dosage of pollutants in the vicinity of emission source that is simple and non-intensive data is required. This model plus impact costs estimations available at environmental economic studies, comprise the general model of Life Cycle Cost Analysis (LCCA) based on exposure. This general model is then used in the Boundary Selection in LCCA. A demonstration of the application of the model is performed to a hypothetical inventory system of a pulp mill.

<p>Realizovana istraživanja disertacije mogu se podeliti na tri<br />osnovne celine. Prva celina predstavlja teorijski deo disertacije, u<br />okviru kog su postavljene osnovne podloge za razvoj sistema za<br />inteligentnu vi&scaron;ekriterijumsku analizu kod ocenjivanja životnog<br />ciklusa proizvoda i procesa. Drugu celinu predstavlja razvoj<br />modela i programskog sistema za inteligentnu vi&scaron;ekriterijumsku<br />analizu. U okviru treće celine prikazani su rezultati primene<br />razvijenog modela i programskog re&scaron;enja na primerima<br />ocenjivanja životnog ciklusa i procene opterećenja životne<br />sredine.</p> / <p>Dissertation reserch has been carried out in three main sections.<br />The first section presents the theoretical part of the dissertation,<br />where the base for the development of intelligent multicriteria<br />analysis within life cycle assessment of the products and<br />processes is set up. The second part presents the development of<br />model and software system for intelligent multicriteria<br />analysis.<br />Within the third section the results of applying the developed<br />model and software solution are presented on the case studies of<br />life cycle analysis and assessment of environmental burdens.</p>

O Brasil é um país que se destaca pela pujança da pecuária e como importante ator no mercado de biodiesel. Entretanto, há uma carência de estudos que investiguem o desempenho ambiental do biodiesel produzido a partir de gordura animal segundo uma lógica sistêmica. Trata-se de um tema controverso em função do tratamento dado à gordura pois, embora haja demanda e mercado bem estabelecido, há casos em que esta substância é tratada como um rejeito da produção de carne, desconsiderando-se os impactos ambientais pregressos. Neste contexto, o presente trabalho foi desenvolvido com o objetivo de avaliar a criticidade de diferentes abordagens para as situações de multifuncionalidade da cadeia de produção do biodiesel obtido de gordura animal. Para tanto, fez-se uso da técnica de Avaliação do Ciclo de Vida de produtos segundo o enfoque atribucional com escopo do \"berço-ao-portão\" para se determinar o desempenho do biodiesel produzido nas regiões Sul, Centro-Oeste e Sudeste, e disponibilizado (tanto puro quanto na forma das misturas B15 e B8) para a região metropolitana de São Paulo entre os anos de 2013 e 2015. As situações de multifuncionalidade foram analisadas a partir da aplicação de critérios físicos (proporção mássica e conteúdo energético), de critérios econômicos e do Método Surplus, além da expansão das fronteiras do sistema e substituição de cargas ambientais evitadas. Os resultados foram expressos em termos das categorias de impacto de Mudanças Climáticas, Acidificação terrestre, Eutrofização aquática, Formação fotoquímica de oxidantes, Demanda de Energia Primária. Adicionalmente, foram feitas considerações a respeito do indicador de Energy Return On Investment (EROI) e do balanço de emissões de gases de efeito estufa. Os resultados indicaram que a alocação das cargas ambientais do processo de refino de petróleo - para a produção do diesel fóssil usado em atividades de transporte - mostrou-se irrelevante no contexto do presente estudo. No que diz respeito ao processo de transesterificação, os efeitos das abordagens para as situações de multifuncionalidade foram pouco influentes sobre os resultados. Isto porque a magnitude do impacto da atividade pecuária foi tamanha que a amplitude dos resultados variou cerca de 817 vezes (no caso da categoria de Mudanças Climáticas) ou até 1084 vezes (para a Demanda de Energia Primária). / Brazil is a country that stands out for the internal importance of cattle farming and as an important player in the biodiesel market. However, there is a lack of studies focusing the investigation of the environmental performance of biodiesel produced from animal tallow according to a systemic scope. This is a controversial issue, due to the treatment given to tallow as, although there is consistent market demand, there are cases in which this substance is treated as a waste from meat production activities. In this context, this study was conducted aiming the evaluation of the criticality of different approaches to multifunctional situations of the biodiesel production chain from animal tallow. In order to do so, attributional Life Cycle Assessment technique was used according to a \"cradle-to-gate\" scope in order to determine the environmental performance of biodiesel produced in the South, Midwest and Southeast regions, and commercialized (either purely or in the form of B15 and B8 mixtures) at São Paulo metropolitan region between 2013 and 2015. Multifunctionality situations were analyzed based on the application of physical criteria (mass ratio and energy content), economic criteria and the Surplus Method, as well as based on system boundaries expansion and the substitution of avoided environmental burdens. The results were expressed in terms of the following impact categories: Climate Change, Terrestrial Acidification, Aquatic Eutrophication, Photochemical Oxidants Formation, and Primary Energy Demand. In addition, considerations were made regarding the Energy Return On Investment (EROI) indicator and the greenhouse gases emission balance. The results indicated that the allocation of environmental burdens at petroleum refining process - for the production of fossil diesel used in transport activities - proved to be irrelevant in the context of the present study. Regarding the transesterification process, the effects of the approaches for multifunctionality situations were not very influential on the results. This is because the magnitude of the impact of cattle raising activity was such that the results varied by about 817 times (in the case of the Climate Change impact category) or up to 1084 times (considering the Primary Energy Demand).