Treatment of industrial landfill leachate by means of evaporation and reverse osmosis

Palma, Luca Di; Ferrantelli, P.; Merli, C.; Petrucci, Elisabetta

doi:10.1016/s0956-053x(02)00079-x

Cited by 110 publications

(32 citation statements)

References 7 publications

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“…Therefore, other technologies have been proposed for their handling and management [2,3]. The most relevant physicochemical processes for the treatment of landfill leachates are the floatation [4], coagulation-flocculation [5], adsorption [6], wet air oxidation [7], membrane processes [8,9], chemical oxidation using O 3 [10] and H 2 O 2 [11], and the advanced oxidation processes (AOPs) that are based on the generation of hydroxyl radicals (i.e., Fenton's reagent, TiO 2 photocatalysis, O 3 /H 2 O 2 , etc.) [12,13].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical process for the treatment of landfill leachate

2010

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In this paper, the anodic oxidation of a real leachate from an old municipal solid waste landfill has been studied using an electrolytic flow cell equipped with a lead dioxide (PbO 2 ) anode and stainless steel as the cathode. The influence of several operation parameters such as (i) the applied current (from 0.5 to 3 A), (ii) liquid flow rate (from 50 to 420 L h -1 ), (iii) temperature (from 25 to 50°C), and (iv) pH (from 3.5 to 8.2) on the COD removal rate, current efficiency, and energy consumption has been evaluated. The galvanostatic electrolyses always yielded COD values below the discharge limit (COD \160 mg L -1 ); the COD removal rate increased with rising applied current, solution pH, and temperature, whereas it remained almost unaffected by the recirculation flow rate. These results indicate that the organic compounds were mainly removed by their indirect oxidation by the active chlorine generated from chlorides oxidation. The specific energy consumption necessary to reduce the organic load to below the disposal limit was 90 kWh m -3 .

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Section: Introductionmentioning

confidence: 99%

Electrochemical process for the treatment of landfill leachate

2010

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“…The heating bath temperature was fixed at the lowest value of the solution boiling temperature at the operating pressure, to reduce energy consumption and to obtain a better quality condensate [13,19,30]. The selected operating pressures were 10 and 40 kPa, at a bath temperature of 100 and 140 • C, respectively.…”

Section: Surfactant Solutionsmentioning

confidence: 99%

“…Several factors might explain this behaviour. Firstly, heat transfer rates to the evaporation flask are higher at 40 kPa, since T HE increases from 54 to 105 • C. Furthermore, surface tension decreases as the temperature increases reducing the rate of bubble formation [13,19,20]. Moreover, the solubility of organic compounds increases at higher temperatures [27] and water encounters less resistance to diffuse and evaporate through the oil droplets or oil layers.…”

Section: Model O/w Emulsionsmentioning

confidence: 99%

“…Despite the wide use of evaporation in industrial processes such as water desalination [5,6], fruit juice concentration [7][8][9][10], sugar production [11,12] and landfill leachate treatment [13], few works have been performed on oily wastewaters treatment. Some studies have indicated the economic advantages of techniques such as membrane processes versus evaporation [14,15], because of the high energy costs associated with the latter technique.…”

Section: Introductionmentioning

confidence: 99%

“…High heat transfer rates increase the evaporation rate, with a subsequent decrease of the condensate quality [13,19,30,31]. The effect of operating pressure has also been investigated, at constant heat transfer rates [16,32].…”

Section: Introductionmentioning

confidence: 99%

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A Critical Review of Biological Processes and Technologies for Landfill Leachate Treatment

et al. 2015

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The most common method to deal with the huge production of municipal wastes is still the disposal in landfills which, however, generates a leachate with high contents of organic and nitrogen pollutants. Requirements must be fixed by law to control leachate release from such landfills, and effective treatment processes and technologies must be applied to reduce its impact on the environment. Biological processes for leachate treatment are discussed in this review, in the former part of which attention is paid to leachate formation and its qualitative and quantitative features, while the latter deals with the state‐of‐the‐art of the most effective biotechnological treatments presently employed. Processes, alternative methods, and technological improvements are compared, with special focus on novel technologies to remove nitrogen pollutants from leachate, highlighting advantages and drawbacks of each treatment.

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Treatment of industrial landfill leachate by means of evaporation and reverse osmosis

Cited by 110 publications

References 7 publications

Electrochemical process for the treatment of landfill leachate

Electrochemical process for the treatment of landfill leachate

Vacuum evaporation of surfactant solutions and oil-in-water emulsions

A Critical Review of Biological Processes and Technologies for Landfill Leachate Treatment

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