Landfill leachate treatment in Brazil – An overview

Costa, Alyne Moraes; Alfaia, Raquel Greice de Souza Marotta; Campos, Juacyara Carbonelli

doi:10.1016/j.jenvman.2018.11.006

Cited by 276 publications

(112 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Figure 2f shows the leachates' TDS levels in the two sites compared to the regulatory body maximum limit. Results revealed that the leachates in Elelenwo dumpsites, Rivers State, Nigeria are polluted, and under the current scenario of increasing water sheds pollution (Abbas et al, 2018;Ali et al, 2019;Barbosa Segundo et al, 2019;Camaño Silvestrini et al, 2019;Čelić et al, 2019;Chu et al, 2019;Costa et al, 2019;Fiorentino et al, 2019;Iqbal, 2016;Iqbal et al, 2019;Joshi and Gogate, 2019;Li et al, 2019;Ma et al, 2019;Majdinasab and Yuan, 2019;Nzediegwu et al, 2019;Poblete et al, 2019;Qi et al, 2019;Wang et al, 2019a;Wang et al, 2019b;Yang et al, 2019;Zhang et al, 2019), there is need to monitor water bodies' quality regularly and adopt the efficient methods to treat the wastewater www.bosaljournals/chemint/ editorci@bosaljournals.com (Caicedo et al, 2019;Hernández-Chover et al, 2018;Mohammadzadeh Pakdel and Peighambardoust, 2018;Salgot and Folch, 2018;Yu et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Toxicological symptoms and leachates quality in Elelenwo Rivers State, Nigeria

Int¹

2019

Preprint

View full text Add to dashboard Cite

The toxicological symptoms prevalent and reported in Elelenwo area were taken into consideration and the leachates quality of its notable dumpsites was investigated for possible links. In situ measurements were made and standard procedures followed for analyses of lead, cadmium and nickel as well as other physicochemical load of the leachates. The results obtained were compared with various guidelines set by some notable regulatory bodies. The outcome showed more than 100 folds toxicity levels above the various benchmarks especially for lead, cadmium and nickel. These dumpsites as a result are environmental hotspots for pollution distribution to nearby surface waters, air and wastewaters bodies as well as the ground water. There is a strong link between reported toxicological symptoms among inhabitants of Elelenwo and Leachates toxicity from these dumpsites and there is emergency need for clean-up action by appropriate authorities.

show abstract

Section: Resultsmentioning

confidence: 99%

Toxicological symptoms and leachates quality in Elelenwo Rivers State, Nigeria

Int¹

2019

Preprint

View full text Add to dashboard Cite

show abstract

“…At the same time, this disordered arrangement can produce paths that facilitate gas flow, creating a hotspot (RACHOR et al, 2013;TAYLOR et al, 2018). Due to the hotspots and the methanotrophic activity, the use of CH 4 to generate energy for a long time in open dumps in Brazil is unfeasible (AHOUGHA-LANDARI; CABRAL, 2017a;COSTA et al, 2019). On the other hand, the presence of hotspots implies in a limited recovery effort to produce significant recovery results (GONZALEZ-VALENCIA et al, 2016).…”

Section: Specialization Of the Carbon Dioxide And Methane Fluxesmentioning

confidence: 99%

“…In Brazil, there are three main destinations for solid urban waste: landfills, controlled landfills and openair dumps (LIMA et al, 2018). The biological process is commonly applied, for being a simple and economical approach and is often the only technique used in most municipalities (COSTA et al, 2019). Open-air dumps are the least recommended way to dispose solid waste as they have no cover layers, no leachate collection or treatment systems, and the gas produced is not used as an energy source (ABRELPE, 2016).…”

Section: Introductionmentioning

confidence: 99%

Medidas De Fluxo De Dióxido De Carbono E Metano Em Um Depósito De Resíduos Insalubre Na Amazônia

Pinheiro¹,

Cattânio

Imbiriba³

et al. 2019

Rev. Bras. Ciênc. Ambient. (Online)

View full text Add to dashboard Cite

Dumps are important anthropogenic sources of greenhouse gas emissions into the atmosphere, mostly CH 4 . However, few studies on the subject have been carried out in the Amazon region. Several factors affect the production and emission of dumps gases. The objective of this study was to quantify the spatial variation of CO 2 and CH 4 production in an Amazonian dump and seek the relationship between the relative importance of some environmental factors and the gas fluxes. This study was carried out in an open-air dump in the metropolitan region of Belém, where approximately 11.0 million Mg of waste was deposited within 25 years, of which 6.4 million Mg were organic. The CH 4 and CO 2 emission rates from the surface of the dump were determined using the closed dynamic flux chamber technique. The study was conducted in three cells of different ages, sampled in two times between the rainy and the dry season in Amazon. The Aurá dump has an area of 30 ha and emits a total of 51.49 Mg CO 2 ha -1 month -1 and 3.16 Mg CH 4 ha -1 month -1 to the atmosphere. This results in an expressive production of 1,359,961.04 Mg CO 2 -e y -1 , being that 58.54% is due to CH 4 flux. The spatial variability in CO 2 and CH 4 fluxes is very large, especially for CH 4 , forming hotspots of high concentrations. Perhaps for this reason, the flow has not been correlated with micrometeorological variations.

show abstract

“…Within landfills, leachate is generated as a result of the decomposition of organic matter and rainwater percolation [3]. Landfill leachates are complex effluents that contain all kinds of contaminants; many of them in high concentrations, so they are extremely difficult to treat [4] [5]. The composition and concentration of pollutants are influenced by the type of waste and the age of leachate [6].…”

Section: Introductionmentioning

confidence: 99%

Application of Anodic Oxidation with Graphite Electrodes in Pretreated Leachates

Sánchez-Sánchez¹,

Aguilar²,

Gutiérrez-Hernández³

et al. 2020

OJAppS

View full text Add to dashboard Cite

Currently, landfills are the main method used for the final disposal of urban solid waste. The degradation processes that waste goes through in these sites, alongside rainwater that percolates through them, generate highly polluting liquids (leachate). In the treatment of leachate, advanced oxidation processes (AOP) can significantly reduce the concentrations of different pollutants. Due to the high documented potential around AOPs, in this study, the effectiveness of anodic oxidation in the removal of the remaining organic load in leachates pretreated in a biological system was evaluated. Graphite electrodes were used as anode and cathode. The efficiency of anodic oxidation, in terms of the removal of chemical oxygen demand (COD) and color, was evaluated under different current densities (7, 12, 17 and 22 mA/cm 2) and pH values (3, 4.5 and 6). Under the best conditions found (22 mA/cm 2 and pH of 6) and with an oxidation time of 5 hours, a maximum removal of 68% in COD and 91% in color was achieved, which represented a quality in the final effluent of 271 mg/L and 151 Pt-Co in COD and color, respectively. Therefore, considering that graphite is an economic and widely available material, the results obtained show anodic oxidation, with the use of graphite electrodes, as a technically viable alternative as a final purification stage for pretreated leachates.

show abstract

Landfill leachate treatment in Brazil – An overview

Cited by 276 publications

References 43 publications

Toxicological symptoms and leachates quality in Elelenwo Rivers State, Nigeria

Toxicological symptoms and leachates quality in Elelenwo Rivers State, Nigeria

Medidas De Fluxo De Dióxido De Carbono E Metano Em Um Depósito De Resíduos Insalubre Na Amazônia

Application of Anodic Oxidation with Graphite Electrodes in Pretreated Leachates

Contact Info

Product

Resources

About