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| Registros recuperados: 10 | |
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| d'Ávila,Júlia V.; Martinazzo,Ana P.; Santos,Fabiana S. dos; Teodoro,Carlos E. de S.; Portz,Adriano. |
| ABSTRACT One of the main urban polluting agents are the sewers, which even with proper treatment end up generating a polluting waste, the sewage sludge. One of the options for the disposal of this sludge is the use in agriculture, due to its high content of organic matter and nutrients. This study aimed to use urban sewage sludge for lemongrass cultivation and essential oil production. The plants were grown in soil containing different organic compost doses (0, 5, 10, 20, 40 and 60 t ha-1), formed from the sewage sludge composting process and waste of urban vegetation pruning. At harvest, plants were analyzed for the concentration of nutrients, chlorophyll content, number of tillers, biomass production, essential oil content and the microbiological quality... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solid waste; Medicinal plant; Composting; Mineral nutrition. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000900811 |
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| Palmer, Karen L.; Walls, Margaret. |
| Extended Product Responsibility embodies the notion that agents along a product chain should share responsibility for the life-cycle environmental impacts of the product, including those associated with ultimate disposal. Extended Producer Responsibility is a narrower concept which places responsibility on producers and focuses primarily on post-consumer waste disposal. Manufacturer "take-back" requirements are the policy lever most often associated with Extended Producer Responsibility. In this paper, we discuss alternative incentive-based policies that are consistent with the objectives of Extended Product and Producer Responsibility. We argue that an upstream combined product tax and recycling subsidy (UCTS) is generally more cost-effective and imposes... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Solid waste; Extended product responsibility; Recycling; Unit pricing; Environmental Economics and Policy; Q2; H2. |
| Ano: 1999 |
URL: http://purl.umn.edu/10830 |
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| Ferreira,Silvio Romero de Melo; Oliveira,Joaquim Teodoro Romão de; Messias,Arminda Saconi; Silva,Hannelore Alves e; Nascimento,Aline Elesbão do; Feitosa,Maria Célia Alves. |
| One of the main problems faced by humanity is pollution caused by residues resulting from the production and use of goods, e.g, sewage sludge. Among the various alternatives for its disposal, the agricultural use seems promising. The purpose of this study was to evaluate the hydraulic conductivity and interaction of soil with sandy-silty texture, classified as Spodosols, from the Experimental Station Itapirema - IPA, in Goiana, state of Pernambuco, in mixtures with sewage sludge from the Mangueira Sewage Treatment Station, in the city of Recife, Pernambuco at rates of 25, 50 and 75 Mg ha-1. Tests were conducted to let water percolate the natural saturated soil and soil-sludge mixtures to characterize their physical, chemical, and microstructural properties... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solid waste; Soil physical and chemical properties; Environment. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000500011 |
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| Pereira,Júlia S.; Guimarães,Jean P.; Lopes,Riuzuani M. B. P.; Farias,Maria S. S. de; Lima,Vera L. A. de; Azevedo,Carlos A. V. de. |
| ABSTRACT The study was conducted in two experiments in greenhouse of the CTRN/UFCG, aiming to evaluate the use of organic compost from household garbage and irrigation with treated domestic wastewater on the growth of castor bean 'BRS-188/Paraguaçu' and sunflower 'Embrapa 122-V2000'. Both experiments were conducted a randomized block design in 6 x 2 factorial scheme, with three replicates, which corresponded to six doses of organic compost (0, 1.2, 2.0, 2.8, 3.6 and 4.4 kg pot-1, equivalent to 0, 60, 100, 140, 180 and 220 kg N ha-1) and two types of water (freshwater and wastewater). It was found that the organic compost doses significantly influenced the growth of sunflower and castor bean in all evaluations, except for stem diameter. The maximum plant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Castor bean; Sunflower; Solid waste. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000600501 |
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| Calcott, Paul; Walls, Margaret. |
| Several studies have shown the efficiency of both a Pigovian tax on waste disposal and a deposit-refund instrument, that is a combined output tax and recycling subsidy. The efficiency of these instruments, however, critically depends on households being paid for recycling. In reality, although most households have access to curbside recycling services, they are not paid for the items they set out at the curb. All items placed in a recycling bin are thus of equal value to a household, and there is no incentive for producers to make their products any more recyclable than what is necessary to be eligible for the bin. This paper characterizes the constrained (second-best) optimum that exists with the missing recycling market and solves for a modified... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Solid waste; Regulatory policy; Regulatory design; Environmental Economics and Policy; H21; Q28. |
| Ano: 2000 |
URL: http://purl.umn.edu/10567 |
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| Palmer, Karen L.; Sigman, Hilary; Walls, Margaret. |
| This paper explores public policies for reduction of municipal solid waste. We parameterize a simple model of waste disposal using supply and demand elasticities from the economics literature and 1990 prices and quantities of recyclable and recycled materials. Using this model, we calculate the waste reduction in response to three public policies: (i) deposit/ refunds, (ii) advance disposal fees, and (iii) recycling subsidies. The results illustrate the effects of the three policies on source reduction and recycling of five recyclable materials that comprise 56 percent of municipal solid waste: aluminum, glass, paper, plastic, and steel. The calculated responses provide information about the cost of reducing municipal solid waste through various policies.... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Solid waste; Deposit/refund; Recycling subsidy; Secondary materials; Environmental Economics and Policy; Q2; H2. |
| Ano: 1996 |
URL: http://purl.umn.edu/10898 |
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| Jenkins, Robin R.; Martinez, Salvador A.; Palmer, Karen L.; Podolsky, Michael J.. |
| This paper examines the impact of two popular solid waste programs on the percent recycled of several different materials found in the residential solid waste stream. We examine a unique, national, household-level data set containing information on the percent recycled of five different materials: glass bottles, plastic bottles, aluminum, newspaper, and yard waste. We find that access to curbside recycling has a significant and substantial positive effect on the percentage recycled of all five materials and that the level of this effect varies across different materials. The length of the recycling program's life has a significant and positive effect on two of the five materials and a mandatory recycling requirement does not affect any materials. The level... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Solid waste; Recycling; Unit pricing; Incentives; Environmental Economics and Policy; Q28; H31. |
| Ano: 1999 |
URL: http://purl.umn.edu/10798 |
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| Walls, Margaret; Palmer, Karen L.. |
| Many environmentalists and policymakers are shifting their focus from media-specific pollution problems to product-specific, life-cycle environmental problems. In this paper, we develop a model of production and consumption that incorporates life-cycle environmental externalities-specifically, an upstream manufacturing byproduct, air or water pollution from manufacturing, and downstream solid waste disposal. We then use the model to derive optimal government policies to address all three externalities. We assume throughout that a Pigovian tax on waste disposal is precluded because of the potential for illegal dumping. We then examine four cases: one in which Pigovian taxes on the upstream externalities are feasible, one in which such taxes are infeasible,... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Life-cycle externalities; Solid waste; Deposit-refund; Environmental Economics and Policy; Q28. |
| Ano: 2000 |
URL: http://purl.umn.edu/10837 |
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| Registros recuperados: 10 | |
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