Fechando o ciclo dos resíduos orgânicos: compostagem inserida na vida urbana

Siqueira, Thais Menina Oliveira de; Abreu, Marcos José de

doi:10.21800/2317-66602016000400013

Cited by 7 publications

(6 citation statements)

References 7 publications

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“…[45] Community composting uses a greater variety of models, which shows an ability to adapt the practice in different situations, depending on the number of people involved and the physical structure conditions typical for decentralized composting [46]. Overall, decentralized composting units have a processing capacity of up to 5 t/year [46], receive waste from nearby generators, and are usually simpler due to the smaller amount of material received [47].…”

Section: Pile or Windrowmentioning

confidence: 99%

Opportunities and Barriers to Composting in a Municipal Context: A Case Study in São José dos Campos, Brazil

Pereira,

Fiore

2024

Sustainability

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The management of municipal solid waste (MSW) is a global challenge of a complex nature. The organic fraction of rapidly degrading MSW, which can be recycled via composting provided it is segregated at the source, is an incipient or non-existent practice in low- and middle-income countries. This study aimed to identify the barriers and opportunities for composting MSW based on the perception of local stakeholders through a qualitative and quantitative exploratory case study in the municipality of São José dos Campos (SP). The study identified and interviewed local stakeholders engaged in composting in the territory, surveying the local market for organic agricultural inputs. Education, infrastructure, and social influence were the main factors that led to the decision to start composting. For home composting, the efficiency of generated waste diversion is from 42% to 59%, and management difficulties at the beginning of the practice are recurrent. Engaging people is the main challenge of community initiatives and 32% ended their composting activities due to the COVID-19 pandemic. Vermicomposting can be an opportunity to value organic waste in the local market. The insights gleaned from the perceptions of local stakeholders provide valuable input for more effective planning within a municipal composting scheme.

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Section: Pile or Windrowmentioning

confidence: 99%

Opportunities and Barriers to Composting in a Municipal Context: A Case Study in São José dos Campos, Brazil

Pereira,

Fiore

2024

Sustainability

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“…In 2008, Brazil already had 211 MSW composting plants (IBGE, 2008) concentrated in two states (IPEA, 2012). These centralised treatment units, dating from the 1980s, collected and treated MSW far from the waste generator, making composting compatible with MSW regime, but hindering citizen commitment with waste separation (Siqueira and Assad, 2015), increasing neighbourhood's resistance (Barbosa et al, 2016;De Siqueira and De Abreu, 2016) and resulting contaminated waste that leads to fail in a short time (Collares et al, 2010). As composting is a more complex treatment than landfills, it adds to the costs figure and without changing MSW collection and transport needs, centralised composting negatively affects the system costs, discouraging local governments (Rodrigues et al, 2016).…”

Section: Decentralised Composting Emergencementioning

confidence: 99%

From urban waste to urban farmers: Can we close the agriculture loop within the city bounds?

Machado

Cunha

2021

Waste Manag Res

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As urbanisation intensifies in Brazilian cities, life quality in urban centres becomes a challenge for policymakers, and transitioning urban systems to sustainability is required. Circular economy concepts may contribute to face them, especially those owing to municipal solid waste (MSW) management. Curitiba, a Brazilian municipality known for its innovative initiatives towards sustainability. Despite a long tradition in recycling inert waste, MSW system struggles to promote composting even considering a decade in force national law. Decentralised composting through the Urban Agriculture Program (UAP) is the city’s strategy to tackle this struggle. This strategy faces difficulties as, even if urban agriculture facilities seem to be a promising context, closing the agricultural loop within the city bounds was not possible in the 24 urban farmers communities trained in composting techniques. The literature has shown difficulties in government experiments to promote practices in the long run and several experiences in Brazil are already described. This study reveals cultural barriers that influence adoption of domestic composting, by following a secondary data review on past experiences with interviewing and observing participatively urban farms communities. From the fieldwork, cultural perspectives from four different relevant actor roles in the UAP were elaborated and conflicts between them revealed cultural barriers hindering composting practices adoption. Recommendations based on these barriers argue for bottom-up approaches for transition experiments and recognising the sense material and technical support makes to practitioners.

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“…Segundo Siqueira et al (2016) os resíduos orgânicos devem ser previamente separados e posteriormente utilizados como compostagem, pois quando dispostos de forma inadequadas podem liberar gases, aumentar a produção de chorume e comprometer a reutilização dos demais. No estudo evidencia a presença de uma grande quantidade resíduos orgânicos sem separação, sendo misturados com os potencialmente recicláveis.…”

Section: Prognósticounclassified

Proposta de gestão de resíduos sólidos do município de Rodolfo Fernandes/RN

Mendonça

Sousa

Bezerra

et al. 2020

Nature and Conservation

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O aumento da geração de Resíduos sólidos, ocasionado pelo grande crescimento populacional no mundo, é um dos maiores problemas enfrentados na atualidade. O Brasil tornou-se o 3º maior produtor de resíduos sólidos da América Latina, atrelado a uma má eficiência da gestão e atingindo também a todas as regiões do país, isso se tornou um dos maiores entraves da gestão pública, atualmente. Diante disto, este trabalho teve o objetivo de elaborar uma proposta de gestão de resíduos sólidos para o município de Rodolfo Fernandes/RN, contemplando desde as etapas de diagnostico às propostas de ações. Foi realizado um estudo exploratório, baseando-se em pesquisas em órgãos oficiais e em documentos técnicos e visitas e levantamento de dados in loco. Foi diagnosticado um gerenciamento ainda deficitário dos resíduos sólidos municipais, dispostos em vazadouro a céu aberto, com uma estimativa de geração diária per capita abaixo das médias nacionais e regionais. A composição gravimétrica demonstrou uma maior porcentagem de resíduos orgânicos apesar dos valores estarem consideravelmente inferiores aos números apresentados nacionalmente. Ainda foi constatado que 20,44% dos resíduos são potencialmente recicláveis, apontando para uma situação de introdução de implantação de coleta seletiva. O prognostico apresentou um cenário da necessidade de imediata adoção de mudança na disposição final dos resíduos e de implementação de associação de catadores que possibilitem uma coleta diferenciada, apresentando também ações estratégicas e medidas executivas de gerenciamento dos resíduos sólidos do município, além de práticas que possibilitem a disseminação da responsabilidade compartilhadas entre os atores sociais envolvidos. Por fim, salientou-se a carência de planejamento e estratégias de gerenciamento e gestão dos RSU, tanto na fase operacional, quanto na percepção financeira.

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Fechando o ciclo dos resíduos orgânicos: compostagem inserida na vida urbana

Cited by 7 publications

References 7 publications

Opportunities and Barriers to Composting in a Municipal Context: A Case Study in São José dos Campos, Brazil

Opportunities and Barriers to Composting in a Municipal Context: A Case Study in São José dos Campos, Brazil

From urban waste to urban farmers: Can we close the agriculture loop within the city bounds?

Proposta de gestão de resíduos sólidos do município de Rodolfo Fernandes/RN

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