Caracterização e avaliação de processos de seleção de resíduos sólidos urbanos por meio da técnica de mapeamento

Lobato, Kelly Carla Dias; Lima, Josiane Palma

doi:10.1590/s1413-41522010000400007

Cited by 12 publications

(13 citation statements)

References 5 publications

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“…Previous research (LOBATO and LIMA, 2010) showed that in relation to the volume collected, plastic materials are the most common and are composed of green, transparent, and oil PET; Tetra park; and white and colored PEAD, taking up a great amount of space in the ACIMAR installations. However, when the number of bales produced and stored is considered, the quantity of cardboard is rather dramatic and makes up the most commonly stored material when compared to papers and plastics.…”

Section: Methodology Methodology Methodology Methodologymentioning

confidence: 99%

“…To develop the concpetual model, the recyclable materials selection process developed by Lobato and Lima (2010) was used as a base. The map presented seven activity flows divided by each type of material (Plastic Material -PM; Cardboard -CB;; White paper -WP; Cans -C; Glass -G; Metals -M; Electronic Materials -EM).…”

Section: Conceptual Modeling Conceptual Modeling Conceptual Modeling mentioning

confidence: 99%

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Using Discrete-Event Simulation in Urban Solid Waste Selection

Lima

Leal

2015

J Solid Waste Technol Mngmnt

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Adequate management of urban solid waste (USW) is beneficial to the environment, cities and people who depend on the income generated from collecting this waste material to survive. Due to the level of complexity of these processes involved in recyclable USW sorting, management tools which enable systemic studies become valuable assets by evaluating the effects changes may cause on the organization. This paper presents a case study in which a USW collection process was evaluated using computational simulation. The study was conducted in conjunction with the USW trash gatherers association of Itajubá, Minas Gerais, Brazil, and used both quantitative and qualitative methods. Data were collected via observation, interviews and questionnaires. Computational simulation enabled the visualization of the flow of materials in the process, the bottleneck indication and the experiments to simulate scenarios in order to increase the association's productivity.

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Section: Methodology Methodology Methodology Methodologymentioning

confidence: 99%

Section: Conceptual Modeling Conceptual Modeling Conceptual Modeling mentioning

confidence: 99%

Using Discrete-Event Simulation in Urban Solid Waste Selection

Lima

Leal

2015

J Solid Waste Technol Mngmnt

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“…According to Montevechi et al (2007), there are three main steps during discrete-event simulation: Conception, Implementation and Analysis. The conception phase involves the definition of the system objectives, aside from creating and validating the conceptual model (Lobato & Lima, 2010). Implementation is related to the construction, verification and validation of the computational model.…”

Section: Literature Reviewmentioning

confidence: 99%

Service levels of highway toll plazas: the influence of factors on manual customer service

Lima

Inácio

Leal

2019

Prod.

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Paper aims: To analyze service levels offered in a highway toll plaza and to test the influence of operational and human factors on manual customer service. Originality: The methodology is an approach which involves systematic and efficient examination of multiple factors. This approach has been widely used in multiple areas; however, little research has been done on experiments in the area of transportation. Research method: Design of Experiment (DOE) and Computation Modeling and Simulation. Main findings: The association of the two methods allowed the development of a more robust empirical model of the customer service process. We have also verified that the human agent interacts and interferes in the manual payment process. Implications for theory and practice: To contribute to the very important debate that surrounds service processes. The research showed that there are alternatives and improvements that can be applied and to serve as basis for transportation policies.

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“…Ao aplicar técnicas de mapeamento de processos, [8] analisaram diversas etapas, desde a chegada dos resíduos sólidos à associação -deve-se ressaltar que nem tudo que é descartado pela população como material reciclável pode ser efetivamente reciclado, passando pela triagem, prensagem, enfardamento, armazenagem e venda dos materiais recicláveis. Dentre as principais conclusões desse estudo, destaca-se que a disposição inadequada de equipamentos, baias e locais de armazenamento provocam uma perda de produtividade devido às distâncias que devem ser percorridas, ao tempo gasto para execução dessas tarefas e até mesmo ao risco laboral envolvido.…”

Section: Introductionunclassified

O Desempenho de Uma Associação de Catadores de Materiais Recicláveis: Em Direção à Autonomia ou à Dependência?

Bernardes¹,

Cornetti²,

Pacheco³

et al. 2014

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Recyclable materials collectors represent the possibility of social reinsertion based on what is discarded by the society. At the same time, this path is not built without mishaps or challenges. ACIMAR -Association of Recyclable Materials Collectors of Itajubá was founded in 2007, from the organization of workers/collectors which used to collect recyclables at the streets of Itajubá, southern Minas Gerais state, and its 'lixao' (place where trash is thrown away without any caution). Nowadays, the association is made up of about 30 members. The main goal of this work is to assess how the evolution of recyclable materials and the respective income generated from it, has influenced the sustainability of ACIMAR. Data used in this work were stored in the association's cashbook, with the respectives invoices and financial records. As a general rule, it can be stated that these data underestimate the recyclable materials records, and the associated income, as in many cases there were situations in which sales were carried out, loans were withdrawn, acquisition of food for the group's meals, among others, without the adequate financial register. ACIMAR contribution towards recyclable materials processing in Itajubá is still modest, being 6% of the maximum recyclable waste, in a situation where all the processed material would come from domestic origin. The total amount of recyclable materials has presented a negative trend of about 220 kg/month between August 2009 and February 2013, especially due to the poor performance from August 2012 onwards. Paper and paperboard are the most common recyclable materials processed by ACIMAR. Thus, their market prices are strategic for the sustainability of the association, in a way that negotiations on these materials should be taken with criteria and ideally inclue different buyers, where best selling conditions must be prioritized. A change in the profile of materials processed by the association is taking place, with the majority of the materials being collected directly on streets, based on household and commerce origins and a positive trend of 200 kg/month, rather than coming from institutional donations, such as those coming from industries. The distinction between autonomy or dependence of ACIMAR in the future is directly related to how its associates deal and rank the importance of an effective and transparent financial control, performed by the own group.

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Caracterização e avaliação de processos de seleção de resíduos sólidos urbanos por meio da técnica de mapeamento

Cited by 12 publications

References 5 publications

Using Discrete-Event Simulation in Urban Solid Waste Selection

Using Discrete-Event Simulation in Urban Solid Waste Selection

Service levels of highway toll plazas: the influence of factors on manual customer service

O Desempenho de Uma Associação de Catadores de Materiais Recicláveis: Em Direção à Autonomia ou à Dependência?

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