Amelioration of ultrafiltration process by lime treatment: Case of landfill leachate

Renou, S.; Poulain, Sébastien; Givaudan, J.G.; Moulin, Philippe

doi:10.1016/j.desal.2008.09.007

Cited by 30 publications

(28 citation statements)

References 30 publications

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“…The average value of J V throughout the entire permeation test was 96.1 L/ (m 2 h) in direct fine-UF; this value dropped to 9.3 and 8.4 L/(m 2 h) after PAC adsorption (Table 3). The other results were obtained by Renou et al (2009) on UF (cutoffs of the membranes between 50 and 1 kDa) for the raw leachate filtration. The membrane productivities were not satisfactory (55-60 L/(m 2 h)), but were improved by pre-treatment with lime addition.…”

Section: Hydraulic Parameters Of Membranesmentioning

confidence: 95%

“…According to Bohdziewicz et al (2001), 50% of the organic substances from landfill leachate could be rejected by UF alone. In a study by Renou et al (2009) with UF membranes, the reduction of COD was from 38% (cutoff of 50 kDa) to 66% (cutoff of 1 kDa) from raw leachate.…”

Section: Fine-uf and Pac-fine-ufmentioning

confidence: 99%

“…These inorganic pollutants are not sorbed by PAC; instead, these pollutants are retained when the effective diameter of the membrane pores is decreased by pore blocking caused by PAC particles with adsorbed organic matter (LaPara et al 2006). Without this membrane blocking, UF cannot reduce mineral pollution (Renou et al 2009). …”

Section: Hydraulic Parameters Of Membranesmentioning

confidence: 99%

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Treatment of stabilized landfill leachate in an integrated adsorption–fine-ultrafiltration system

Kulikowska

Zielińska

Konopka

2018

Int. J. Environ. Sci. Technol.

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This study investigated the feasibility of using an adsorption-fine-ultrafiltration system for removing organics from stabilized landfill leachate. For adsorption, Norit SX2 powdered activated carbon was used; the fine-ultrafiltration system was equipped with a ceramic membrane. Due to low organics removal efficiency in fine-ultrafiltration alone (series 1) (46.5% of chemical oxygen demand, 22.1% of dissolved organic carbon), two doses of activated carbon were used for adsorption before fine-ultrafiltration: 0.2 g/L (series 2) and 1 g/L (series 3). Although organics removal efficiency at both doses of Norit SX2 differed (12.9 and 34.5% of chemical oxygen demand, 12.2 and 54.7% of dissolved organic carbon, at 0.2 and 1 g/L, respectively), permeate quality did not differ substantially. Although the use of Norit SX2 improved permeate quality in comparison with fine-ultrafiltration alone (220 mg/L in series 2 and 209 mg/L in series 3 vs. 842 mg/L in series 1), its particles blocked the membrane and lowered the permeate flux even at the lower dose. In the series with adsorption, permeate flux was about 10 times lower than during fine-ultrafiltration alone. This indicates that, in fine-ultrafiltration preceded by adsorption on activated carbon, it is reasonable to use the lower dose of Norit SX2 because the efficiency of treatment is similar to that at the higher dose, but the reduction in permeate flux is somewhat less. These results indicate that the possibility of using adsorption-fine-ultrafiltration in the practice of leachate treatment is limited because of blocking membrane pores with particles of activated carbon.

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Section: Hydraulic Parameters Of Membranesmentioning

confidence: 95%

Section: Fine-uf and Pac-fine-ufmentioning

confidence: 99%

Section: Hydraulic Parameters Of Membranesmentioning

confidence: 99%

See 1 more Smart Citation

Treatment of stabilized landfill leachate in an integrated adsorption–fine-ultrafiltration system

Kulikowska

Zielińska

Konopka

2018

Int. J. Environ. Sci. Technol.

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“…Three KERASEP membranes were used: 1, 5 and 15 kDa MWCO. The removal of COD was 66%, 63% and 47%, respectively [105]. Trebouet MPT-20 reduced the COD, BOD and SS by 74%, 85% and 100%, respectively.…”

Section: Membrane Processesmentioning

confidence: 99%

Treatment of landfill waste, leachate and landfill gas: A review

Omar

Rohani

2015

Front. Chem. Sci. Eng.

114

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This review aims at the treatment of the entire landfill, including the waste mass and the harmful emissions: leachate and landfill gas. Different landfill treatments (aerobic, anaerobic and semi-aerobic bioreactor landfills, dry-tomb landfills), leachate treatments (anaerobic and aerobic treatments, anammox, adsorption, chemical oxidation, coagulation/flocculation and membrane processes) and landfill gas treatments (flaring, adsorption, absorption, permeation and cryogenic treatments) are reviewed. Available information and the gaps present in current knowledge is summarized. The most significant areas to expand are landfill waste treatments, which in recent years has begun to grow but there is an opportunity for much more. Another area to explore is the treatment of landfill gas, a very large field to which not much effort has been put forth. This review is to compare different treatment methods and give direction to future research.

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“…Given the conditions of neutralising impurities therein, especially important is the dynamics of the composition and concentration of organic substances, since the amount of biodegradable compounds decreases and the amount of compounds that are difficult to degrade increases as the landfill ages. There are numerous methods involving effective treatment of leachates at municipal waste landfill sites (Renou et al 2009). These include the physicochemical methods, such as volume reduction by means of ultrafiltration and reverse osmosis , or a combination of these methods.…”

Section: Introductionmentioning

confidence: 99%

Effect of Technological Conditions on Removing Organic Substances from Landfill Leachates

2018

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The paper presents the research on how the effectiveness of removing organic substances is affected by the use of polyurethane foam fillings characterized by a varied porosity and the temperature of the process of treating landfill leachate in a biological sequencing batch reactor. The information on the conversion of organic compounds during the operation of the reactor was obtained by measuring the absorbance for selected wavelengths to describe the process of humification. It was found that the technological conditions used in the experiment affected the effectiveness of reducing the COD, but did not affect the type or amount of the humic substances in the leachate treated. In all of the variants examined, the COD decreased the as the humification level increased, and yet this relation was not linear in character.

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Amelioration of ultrafiltration process by lime treatment: Case of landfill leachate

Cited by 30 publications

References 30 publications

Treatment of stabilized landfill leachate in an integrated adsorption–fine-ultrafiltration system

Treatment of stabilized landfill leachate in an integrated adsorption–fine-ultrafiltration system

Treatment of landfill waste, leachate and landfill gas: A review

Effect of Technological Conditions on Removing Organic Substances from Landfill Leachates

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