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Influence of newly synthesized imidazolium ionic liquids on activated sludge process

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Abstract
This study investigates the influence of four imidazolium ionic liquids (ILs) present in wastewater on the activated sludge process. In addition, experiments with inactivated sludge to assess the capacity of this sorbent to remove ILs from the wastewater were conducted. It occurred that the presence of ionic liquids in wastewater reduces biomass growth and size of the sludge flocs. The strongest effect has been found for IL 6 (1-hexyl-2H-3-methyl-4,5-dimethylimidazolium iodide) with the longest alkyl chain length. Also, the degree of ILs removal increases with the alkyl chain length and decreases with the increase of initial concentration of ILs in wastewater. IL 6 reaches the highest degree of ILs removal from wastewater but inhibits the biomass growth and growth of sludge flocs in a greater extent than other tested compounds. Moreover, it was confirmed that newly synthesized ionic liquids can be adsorbed onto inactivated sludge. IL 6 could be adsorbed in a higher degree than other ionic liquids. This adsorption was described by Langmuir isotherm, whereas adsorption of other ionic liquids was described by Freundlich isotherm.
Keywords
removal, morphological parameters, adsorption, activated sludge, imidazolium ionic liquids, SORPTION, ADSORPTION, SOILS, SEDIMENTS

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Chicago
Gendaszewska, Dorota, Ewa Liwarska-Bizukojć, Cédric Maton, and Christian Stevens. 2015. “Influence of Newly Synthesized Imidazolium Ionic Liquids on Activated Sludge Process.” Archives of Environmental Protection 41 (4): 40–48.
APA
Gendaszewska, D., Liwarska-Bizukojć, E., Maton, C., & Stevens, C. (2015). Influence of newly synthesized imidazolium ionic liquids on activated sludge process. ARCHIVES OF ENVIRONMENTAL PROTECTION, 41(4), 40–48.
Vancouver
1.
Gendaszewska D, Liwarska-Bizukojć E, Maton C, Stevens C. Influence of newly synthesized imidazolium ionic liquids on activated sludge process. ARCHIVES OF ENVIRONMENTAL PROTECTION. 2015;41(4):40–8.
MLA
Gendaszewska, Dorota, Ewa Liwarska-Bizukojć, Cédric Maton, et al. “Influence of Newly Synthesized Imidazolium Ionic Liquids on Activated Sludge Process.” ARCHIVES OF ENVIRONMENTAL PROTECTION 41.4 (2015): 40–48. Print.
@article{7215779,
  abstract     = {This study investigates the influence of four imidazolium ionic liquids (ILs) present in wastewater on the activated sludge process. In addition, experiments with inactivated sludge to assess the capacity of this sorbent to remove ILs from the wastewater were conducted. It occurred that the presence of ionic liquids in wastewater reduces biomass growth and size of the sludge flocs. The strongest effect has been found for IL 6 (1-hexyl-2H-3-methyl-4,5-dimethylimidazolium iodide) with the longest alkyl chain length. Also, the degree of ILs removal increases with the alkyl chain length and decreases with the increase of initial concentration of ILs in wastewater. IL 6 reaches the highest degree of ILs removal from wastewater but inhibits the biomass growth and growth of sludge flocs in a greater extent than other tested compounds. Moreover, it was confirmed that newly synthesized ionic liquids can be adsorbed onto inactivated sludge. IL 6 could be adsorbed in a higher degree than other ionic liquids. This adsorption was described by Langmuir isotherm, whereas adsorption of other ionic liquids was described by Freundlich isotherm.},
  author       = {Gendaszewska, Dorota and Liwarska-Bizukoj\'{c}, Ewa and Maton, C{\'e}dric and Stevens, Christian},
  issn         = {2083-4772},
  journal      = {ARCHIVES OF ENVIRONMENTAL PROTECTION},
  keyword      = {removal,morphological parameters,adsorption,activated sludge,imidazolium ionic liquids,SORPTION,ADSORPTION,SOILS,SEDIMENTS},
  language     = {eng},
  number       = {4},
  pages        = {40--48},
  title        = {Influence of newly synthesized imidazolium ionic liquids on activated sludge process},
  url          = {http://dx.doi.org/10.1515/aep-2015-0038},
  volume       = {41},
  year         = {2015},
}

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