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Drinking Water Engineering and Science An interactive open-access journal
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During this investigation of defluoridation of drinking water by modified natural zeolites by using cationic surfactants, the researcher used to evaluates the un modified natural zeolites treatment performance by surfactants modified natural zeolite. Hence the results of each item zeolites is described by graphs and table as discussed in manustricpit. Since the preparation of Surfactants modified natural zeolites treatments different factor have to be considered which may influences.
Preprints
https://doi.org/10.5194/dwes-2020-35
https://doi.org/10.5194/dwes-2020-35

  26 Feb 2021

26 Feb 2021

Review status: this preprint was under review for the journal DWES. A revision for further review has not been submitted.

Defluoridation of drinking water by modified natural zeolite with Cationic surfactant, in case of Ziway town, Ethiopia

Dessalegn Geleta Ebsa1 and Adisu Befekadu Kebede2 Dessalegn Geleta Ebsa and Adisu Befekadu Kebede
  • 1Lecture in Department of Water Supply and Environmental Engineering, School of Civil and Environmental Engineering Jimma University Institute of Technology, Jimma University
  • 2Lecture and Department Co-ordinate for Water Supply and Environmental Engineering, School of Civil and Environmental Engineering Jimma University Institute of Technology, Jimma University

Abstract. In Ethiopia (Ziway town) an excess fluoride (≥ 1.5 mg/L) consumption in drinking water (ground water and Lake Ziway) sources causes a health problem on the communities. The surrounding of inhabitant's peasant farmers of drinking water sources was extremely relying on this polluted fluoride concentration of water. This investigation was focused on defluoridation of drinking water by natural zeolite modified with a cationic surfactant in a batch system and Hexadecy Trimethyl Ammonium Bromide were used for zeolite modification. The Batch experiments also conducted to test for preferential removal of fluoride from water by surfactant-modified zeolite. The zeolite treatments had an aggregate size of 1.4 to 2.4 mm. The cationic surfactant-modified zeolite, and raw zeolite were used in all experiments. The removal efficiency of the treatment was influence by pH of solution (5.5 ± 0.2–8.5 ± 0.2), initial concentration of fluoride (1–10 mg/L), dose of surfactant-modified zeolite (2.5–18 g/L), contact time (30–180 Minute), and effect of temperature was investigated. The study investigated that, at the constant Blank of 10 mg/L, 5 g/L of Hexadecy Trimethyl Ammonium Bromide dosage noted the highest fluoride removal potential at the end of the 3hours runtime: Na-LSX (88.4 %), Na-LTA (64.6 %) and ZR (79.8 %). Incompatible to this reflection, the model waters with pH maintained at 5.5 ± 0.2 and 6.5 ± 0.2 verified rapid fluoride removal (89.7 % and 72.3 % respectively) within the first 60 minutes of runtime.

Dessalegn Geleta Ebsa and Adisu Befekadu Kebede

Status: closed (peer review stopped)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on dwes-2020-35', Anonymous Referee #1, 24 Mar 2021
  • RC2: 'Comment on dwes-2020-35', Anonymous Referee #2, 25 Mar 2021
  • RC3: 'Comment on dwes-2020-35', Anonymous Referee #3, 28 Mar 2021

Status: closed (peer review stopped)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on dwes-2020-35', Anonymous Referee #1, 24 Mar 2021
  • RC2: 'Comment on dwes-2020-35', Anonymous Referee #2, 25 Mar 2021
  • RC3: 'Comment on dwes-2020-35', Anonymous Referee #3, 28 Mar 2021

Dessalegn Geleta Ebsa and Adisu Befekadu Kebede

Dessalegn Geleta Ebsa and Adisu Befekadu Kebede

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Short summary
During this investigation of defluoridation of drinking water by modified natural zeolites by using cationic surfactants, the researcher used to evaluates the un modified natural zeolites treatment performance by surfactants modified natural zeolite. Hence the results of each item zeolites is described by graphs and table as discussed in manustricpit. Since the preparation of Surfactants modified natural zeolites treatments different factor have to be considered which may influences.
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