Characterization, quantification and management of China’s municipal solid waste in spatiotemporal distributions: A review

Bian

Env Prog and Sustain Energy

et al. 2019

Waste disposal sector is an important anthropogenic source of greenhouse gas (GHG) emissions; therefore, it is important to accurately estimate GHG budget of waste disposal activities and evaluate its contribution to global GHG emissions. Based on the GHG inventory guidelines provided by the Intergovernmental Panel on Climate Change, this study calculated GHGs from the municipal solid waste (MSW) disposal sector (including landfill, incineration, and compost) in China during the period 2002-2017. Overall GHG emission from the MSW disposal sector increased from 30,392.0 Gg CO 2 in 2002 to 76,623.0 Gg in 2017. MSW landfill contributed most to GHG emissions as indicated by the emission share of landfill decreasing from a peak value of 93.5% in 2002 to 65.8% in 2017. GHG emissions from MSW incineration increased rapidly from less than 3.0% in 2002 to 32.8% in 2017. In 2017, East China contributed the most among the seven regions of China, while the Northwest contributed the least. Methane mitigation technologies such as landfill gas to energy projects and functional solid cover utilization are the primary measures for reducing GHG emissions from landfill; conversion of the treatment method from landfill to incineration is another effective measure; MSW sorting and source reduction of waste amounts prior to incineration were also found to be promising strategies. K E Y W O R D S climate change, GHG emission inventory, incinerator, landfill, municipal solid waste

Section: Methods and Datamentioning

confidence: 99%

Implications of municipal solid waste disposal methods in China on greenhouse gas emissions

Bian

Env Prog and Sustain Energy

et al. 2019

“…Na China, um levantamento das tendências temporais e da caracterização da variação espacial na quantidade de resíduos sólidos em distintas regiões diagnosticou uma geração per capita máxima de 0,6532 kg/pessoa/dia, em 2014, e 61,2% de proporção de resíduos alimentares, 9,8% de plásticos e 9,6% de papel [20].…”

Section: ____________________________________________________________unclassified

Caracterização física dos resíduos sólidos domésticos e dimensionamento de área para aterro sanitário no município de Sobradinho-BA

et al. 2019

____________________________________________________________________________________________________________ RESUMOOs diversos transtornos promovidos pelo acúmulo indevido dos resíduos sólidos urbanos, em decorrência do acelerado aumento populacional, associados à realidade gerencial do país, tornam os desequilíbrios perceptíveis. Nesse âmbito, o presente estudo objetivou realizar uma caracterização física dos resíduos domiciliares e estimar área voltada à implantação de aterro sanitário de pequeno porte para o município de Sobradinho-BA. O diagnóstico gravimétrico se consolidou em três sessões quinzenais por coletas porta a porta, em 70 domicílios da sede municipal, amostrados em 90% de confiança. A área do aterro foi estimada a partir da produção futura e da geração per capita dos resíduos amostrados. A sede gera em torno de 0,72 kg/hab./dia de resíduos. A quantidade total obtida constituiu-se em 62% de resíduos orgânicos, 20% de rejeitos, 8% de material reciclável caracterizado como plástico e 10% de outros tipos de materiais. O maior acréscimo em massa de resíduos se deu durante os festejos juninos. O cálculo de estimativa da área para o aterro demonstrou ser necessário utilizar 111 m 2 . O trabalho agrega informações ausentes para o município, visando contribuir com a elaboração do Plano de Saneamento Básico da Região Integrada de Desenvolvimento Econômico.Palavras-chave: Resíduos Sólidos. Gravimetria. Aterro de pequeno porte. ____________________________________________________________________________________________________________ IntroduçãoA conjuntura ambiental atual tem demonstrado que as preocupações em torno da problemática envolvendo resíduos sólidos tornam-se cada vez mais frequentes. A Lei n° 11.445 de 5 de janeiro de 2007, que estabelece as diretrizes nacionais para o saneamento básico e o define como um conjunto de serviços, infraestruturas e instalações operacionais de abastecimento de água potável, esgotamento sanitário, limpeza pública e manejo dos resíduos sólidos, assim como drenagem e manejo das águas pluviais, considera, como eixos que compõem o setor de resíduos, as infraestruturas e as instalações operacionais de coleta, o transporte, o transbordo, o tratamento e o destino final do resíduo doméstico e do resíduo originário da varrição e limpeza de logradouros e vias públicas [1].

“…However, promoting public participation and individual action remains a challenge for governments, organizations and institutions around the world [1, 12,13]. Many researchers and government institutions are working intensively on the development of regulations that promote the prevention of waste generation and, if this is not possible, encourage its reduction, reuse, recycling, energy recovery, treatment and final disposal, as a last resort [14][15][16][17]. Proof of this are the numerous meetings of international interest, the objective of which has been to promote respect for the environment [18,19].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Environmental Awareness, Emotions and Level of Self-Efficacy of Teachers in Training within the Framework of Waste for the Achievement of Sustainable Development

et al. 2020

The United Nations General Assembly has pointed out that education is an essential tool for properly instructing society to achieve sustainable development, in terms of values, skills, knowledge or abilities. Within this framework, this research focuses on environmental attitude and awareness as an influential element in the teaching and learning processes. The main objective of the study was to diagnose and evaluate emotional, teaching self-efficacy and environmental awareness variables of teachers in primary and secondary education training within the framework of waste. The sample was made up of 160 teachers in training. As a measurement instrument, a questionnaire was designed, developed and validated consisting of three different parts to measure the variables under investigation. The descriptive and inferential statistical analysis of the data shows attitudinal, emotional and self-efficacy differences according to the categories examined, revealing the need to promote an improvement in the attitude towards certain environmental actions in future teachers. The results suggest that education has a relevant role in sustainability, and its importance and inclusion in the curricula of the different educational stages should be recognized.