Processoepd.additionalLciaResults = Indicadores adicionais de impacto ambientalConjunto de dados: Melamine-urea-formaldehyde resin, at plant, with solid state and molar ratio 1.35, , for indoor/outdoor use (br)

Fechar Voltar Colapso de todas as seções

Processoepd.additionalLciaResults = Indicadores adicionais de impacto ambientalConjunto de dados: Melamine-urea-formaldehyde resin, at plant, with solid state and molar ratio 1.35, , for indoor/outdoor use (br) en

Processoepd.additionalLciaResults = Indicadores adicionais de impacto ambientalinformações

Informações sobre o conjunto de dados-chave

Localização

Descrição da representatividade geográfica

Data for Brazil used for Center-South Region.

Ano de referência

2012

Nome

Melamine-urea-formaldehyde resin, at plant, with solid state and molar ratio 1.35, , for indoor/outdoor use

Comentário geral sobre o conjunto de dados

This dataset represents melamine-urea-formaldehyde (MUF) resin production (solid state of 65% and molar ratio of 1.35), for indoor/outdoor use at wood-based panels industry. The processes starts from reception of raw materials at the factory gate. Includes the inputs to the production processes and the main process emissions to air, water and soil. Transport activities for inputs and capital goods, such as industrial machinery, as well as personnel activities were not included within the system boundary. The reference flow was the production of 1 kg of resin, and dataset was based on primary and secondary data for amino resins.

Direitos autorais

Não

Proprietário do conjunto de dados

Diogo Aparecido Lopes Silva

Referência quantitativa

Fluxo(s) de referência

Melamine-urea-formaldehyde resin
- 1.0 * 1.0 kg (Masse)

Representatividade de tempo

Conjunto de dados válido até

2013

Descrição da representatividade de tempo

Data from 2012 to 2013, current technology for production of amino resins in Brazil (see 'Technology').

Representatividade tecnológica

Descrição da tecnologia, incluindo sistema de fundo

A Brazilian MUF resin industrial unit with an annual production volume of 17,000,000 tons (2011-2012) and considered a state-of the-art company was selected for this study. This company is a market leader in the amino resins market, with a 30% marketshare in Brazil. The MUF resin production depends on the reaction of urea, melamine and formaldehyde in a three-step process (Dunky, 1998): the first step is methylolation, the second step is condensation and the third step adds the final urea and melamine. The process begins with the conversion of methanol by catalytic oxidation in a reactor vessel for the obtaining of an aqueous form of formaldehyde, which is cooled and sent to the absorber with water for the production of an aqueous solution. Formaldehyde is then sent to a resin batch reactor, where it is mixed with a combination of urea and melamine. It was assumed 10% of melamine with UF resin (neat resin basis). Other inputs, such as small quantities of catalysts and additives, namely sodium hydroxide and formic acid are also used during the process. This reaction is controlled by parameters such as pH, temperature, viscosity, ratio of formaldehyde to urea, and charging rate until the desired degree of polymerization is achieved. Water can also be removed for the control of the percentage of resin solids, but most of the water is usually recycled for re-use in the manufacturing process. Many production facilities, as emission controllers are employed so as to reduce local emissions (e.g., free formaldehyde and particulate matter) in the production of resins. Therefore, it is considered that few emissions are generated in the resin industrial production.

Modelo matemático

Variável / parâmetro	Valor médio	StdDev relativo em %	Comentário geral
gd_price_waste	0.5	%	This parameter was added by GreenDelta during the implementation of the ecoinvent database in openLCA. It is used by those exchanges which did not have a price specified by ecoinvent for being wastes (i.e. negative reference product), and that were considered that they should have a cost/revenue specified. The prices used for them, equal to the prices of the same product in other processes of the database, are modified by this parameter with value 0.5 (i.e. half the price of the normal product), considering that the reference product of a waste treatment process might have a lower price in reality than the same flow produced by a production process. However, you can modify this value to 0 if you prefer to consider no price for them like ecoinvent, or also 1 if you do not want to distinguish wastes from other products.
gd_price_product	1.0	%	This parameter was added by GreenDelta during the implementation of the ecoinvent database in openLCA. It is used by those exchanges which did not have a price specified by ecoinvent and that were considered to be products or co-products of waste treatments (i.e. positive reference product), and that they should have a cost/revenue specified. The prices used for them, equal to the prices of the same product in other processes of the database, are modified by this parameter with value 1. However, you can modify this value to 0 if you prefer to consider no price for them like ecoinvent.
ei_price_product	1.0	%	This parameter was added by GreenDelta during the implementation of the ecoinvent database in openLCA. It is used by those exchanges which did not have a price specified by ecoinvent in this specific system model, but yes in at least one of the other two system models. The prices used for them, equal to the prices of the same product and provider in the other system model, are modified by this parameter with value 1. However, you can modify this value to 0 if you prefer to consider no price for them in this system model like ecoinvent.

Modelagem e validação

Método LCI e alocação
Tipo de conjunto de dados	Unit process, black box
Princípio do Método LCI	Other
Desvio do princípio do método LCI / explicações	Attributional
Constantes de modelagem	The LCI is entirely done with an attributional methodology. No allocation or substitution methods have been considered in the process.
Fontes de dados, tratamento e representatividade
Princípios de corte e completude de dados	It was assumed 1 % of the total mass of material resources consumed as cutoff criterion for the LCI construction.
Desvio dos princípios/explicações de corte e completude de dados	None.
Seleção de dados e princípios de combinação	All the input/output data was collected for the Brazilian Center-South region as it accounts for more than 30% of the national production of amino resins in the country. Data for 01 company, located in the States of Minas Gerais was collected.
Desvio da seleção de dados e princípios/explicações de combinação	None.
Princípios de tratamento de dados e extrapolações	see 'Geography' and 'Technology' in 'General information' section.
Fonte(s) de dados utilizada(s) para este conjunto de dados	ILCD format Silva et al. (2013). Life cycle assessment of medium density particleboard (MDP) produced in Brazil, 2013 Silva et al. (2015). Environmental performance assessment of the melamine-ureaformaldehyde (MUF) resin manufacture: a case study in Brazil. Wilson, J.B. (2009)
Procedimento de amostragem	Average values representing one year of MUF resin production were obtained from on-site measurements and internal companies documents such as records of raw material consumption, emissions and waste management inventories. When process input/output data was not avaiable, secondary data were used from literature - Wilson (2009).
Período de coleta de dados	The data was collected during 2 years of sampling between 01/2012-12/2013.
Integralidade
Completude do modelo do produto	No statement

Administrativo informações

Comissário e objetivo
Projeto	SILVA, D.A.L. (2012). Life cycle assessment of MDP wood-based panel production in Brazil. 207p. Dissertação (Mestrado) - Escola de Engenharia de São Carlos, Universidade de São Paulo, São Carlos, 2012 (in Portuguese).
Aplicações pretendidas	This LCI can be used for any types of LCA studies.
Gerador de dados
Gerador / modelador de conjunto de dados	Diogo Aparecido Lopes Silva
Entrada de dados por
Carimbo de tempo (último gravado)	2021-01-19T16:34:24.735-02:00
Formato(s) do(s) conjunto(s) de dados	ILCD format
Entrada de dados por	Diogo Aparecido Lopes Silva
Publicação e propriedade
UUID	43a37de0-55c6-409e-be5a-7e9c28099f0c
Data da última revisão	2020-05-13T13:44:47.614-03:00
Versão do conjunto de dados	00.00.009
Republicação sem alterações de	Silva et al. (2015). Environmental performance assessment of the melamine-ureaformaldehyde (MUF) resin manufacture: a case study in Brazil.
Proprietário do conjunto de dados	Diogo Aparecido Lopes Silva
Direitos autorais	Não
Restrições de acesso e uso	The data set can be used free of charge by anybody to perform LCA studies, to distribute it to third parties, to convert it to other formats, to develop own data sets etc.

Entradas e Saídas

Entradas

Tipo de fluxo	Classificação	Fluxo	Valor médio	Valor resultante
Product flow	Energy carriers and technologies / Electricity	Electricity from Brazilian hydroelectric power plants	0.045 MJ	0.045 MJ
Elementary flow	AGRIBALYSE / Elementary flows / water / river	Formic acid, thallium(1+) salt	7.0E-5 kg	7.0E-5 kg
Product flow		Sodium hypochlorite, 15% in H2O, at plant	5.0E-5 kg	5.0E-5 kg
Product flow	Valuable substances / Materials / Plastics	Melamine resin foam	0.1 kg	0.1 kg
Product flow	chemicals / organics	methanol, at regional storage	0.16 kg	0.16 kg
Product flow		urea, as N	0.39 kg	0.39 kg
Product flow	water supply / production	tap water, at user	0.23 kg	0.23 kg