Efficiency and kinetics of organics removal from landfill leachate by adsorption onto powdered and granular activated carbon

Kulikowska, Dorota; Bernat, Katarzyna; Parszuto, Katarzyna; Sułek, Piotr

doi:10.1080/19443994.2014.991763

Cited by 5 publications

(10 citation statements)

References 24 publications

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“…Higher doses proved less efficient because the high consumption of carbon yields only a low increase in process efficiency. The same phenomenon was observed in earlier research concerning the organics removal from landfill leachate with both PACs and GACs as adsorbent [13]. The authors showed that with PAC doses between 2 and 3 g/L, an increase of 1 g/L (PAC 200-1Wi and PAC 200-C303) gave an increase in COD and UV 254 removal efficiency of 19.1 and 15.4%, respectively; with GACs (GAC 10 and GAC 10CO), the increase was 4.0-4.3% (COD) and 5.4-6.0 (UV 254 ).…”

Section: The Efficiency Of Organics and Color Removal Using Pacssupporting

confidence: 77%

“…On the other hand, large molecules in landfill leachate may be unable to penetrate the smaller pores of this PAC, which would diminish the process efficiency. This phenomenon was observed in a previous study in which lower organics concentrations in the effluent and higher process efficiency were obtained with PAC-200-1Wi (specific area, 900 m 2 /g) than with PAC-200-C303 (specific area 1,200 m 2 /g) [13]. Lin et al [27] have observed that the adsorption capacity of PAC, with a surface area 730 m 2 /g, depends on the molecular weight of a stock solution of commercial humic acid (HA) (Aldrich).…”

Section: The Efficiency Of Organics and Color Removal Using Pacssupporting

confidence: 58%

“…A previous study of the author [13] concerning landfill leachate treatment with granular and powdered activated carbon (PAC) showed that process efficiency increased to the greatest extent with lower AC doses (2-3 g/L for powdered AC and 2-10 g/L for granular AC). Higher doses proved to be less efficient because they yielded 8-10 times lower increases in process efficiency than lower doses.…”

Section: Desalination and Water Treatmentmentioning

confidence: 98%

“…The samples were collected at prescribed time intervals: 0, 0.083, 0.167, 0.33, 0.5, 1.2, and 3 h to determine the organics' content (COD). The frequency of sampling to obtain data for kinetic analysis was based on the literature [13,16,17].…”

Section: Process Configuration and System Designmentioning

confidence: 99%

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Usability of powdered activated carbon for landfill leachate treatment—continued research

Kulikowska

2016

Desalination and Water Treatment

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Adsorption onto activated carbon (AC) is an effective method for the treatment of leachate from mature landfill. However, in order to limit an excessive AC consumption, it is very important to determine the range of doses at which the organics and color removal efficiency increases to the greatest extent. This study compared the usability of two powdered activated carbons (PACs) (CWZ-22 and CWZ-14 with specific area 850 and 750 m 2 /g, respectively) in organics (expressed as COD and UV 254 as index of humic substance concentration) and color (UV 410 ) removal from landfill leachate. CWZ-22 was more efficient than CWZ-14. In both PACs, the highest process efficiency was where doses were between 1 and 3 g/L; higher doses (5-20 g/L) proved less efficient because high PAC consumption yielded several times lower increase in organics and color removal than lower doses. In 1-3 g/L ranges, a 1 g/L increase in CWZ-22 gave an increase of 12.5% (COD), 13.1% (UV 254 ), and 20.0% (UV 410 ) removal efficiency. In higher doses, increases were 1.4, 0.5, and 0.7%, respectively. With both PACs, organics adsorption followed pseudo-second-order kinetics. With CWZ-22 and lower doses, a kinetics constants of adsorption was 1.5-1.9 times higher than CWZ-14.

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Section: The Efficiency Of Organics and Color Removal Using Pacssupporting

confidence: 77%

Section: The Efficiency Of Organics and Color Removal Using Pacssupporting

confidence: 58%

Section: Desalination and Water Treatmentmentioning

confidence: 98%

Section: Process Configuration and System Designmentioning

confidence: 99%

See 2 more Smart Citations

Usability of powdered activated carbon for landfill leachate treatment—continued research

Kulikowska

2016

Desalination and Water Treatment

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“…In the dose range of 2-3 g/L for PAC and 2-10 g/L for GAC, a dose increase by 1 g/L resulted in the increase in the efficiency of COD removal by 19.1% (PAC) and by 4.0-4.3% (GAC) (Kulikowska et al 2016). Furthermore, equilibrium was obtained within 30 min for PAC and 48 h for GAC.…”

Section: Efficiency Of Removal Of Organic Compounds With Norit Sx2mentioning

confidence: 99%

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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Optical Properties of Dissolved Organic Matter in Urban Fountains

Parszuto

Tandyrak

Augustyniak

et al. 2019

IOP Conf. Ser.: Earth Environ. Sci.

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Efficiency and kinetics of organics removal from landfill leachate by adsorption onto powdered and granular activated carbon

Cited by 5 publications

References 24 publications

Usability of powdered activated carbon for landfill leachate treatment—continued research

Usability of powdered activated carbon for landfill leachate treatment—continued research

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

Optical Properties of Dissolved Organic Matter in Urban Fountains

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