:: Volume 10, Issue 2 (10-2018) ::
JNKUMS 2018, 10(2): 21-30 Back to browse issues page
The Effect of Peridates Activated with Nano Particles of Magnesium Oxide in The Presence of Ultraviolet Waves for the Removal of 2-Chlorophenol from Aqueous Solutions
Abolmottaleb Sayyedi , Shoeib Rahimi , Alireza Rahmani , Ghorban Askari , Seyyed Esmaeil Hatami , Seyyedeh Tayebeh Hatami
Abstract:   (159 Views)
Introduction: 2- Chlorophenols are toxic and hazardous pollutants in industrial effluents and sewage. Due to their toxicity and instability, these compounds are known as pollutants with a high environmental profile, even at low concentrations. This study aimed to determine the efficiency of activated peridates with magnesium oxide nanoparticles in the presence of ultraviolet waves for removing 2-chlorophenol from aqueous solutions.
Methods: In this experimental study, the photochemical analysis of 2-chlorophenol was performed in a 2.5-liter Discontinuous cylindrical reactor. A 55-watt low-pressure mercury lamp was used to produce ultraviolet waves with a wavelength of 254 nm. The parameters affecting the absorption process (pH 3 to 11), the dose of nanoparticles (0 to 1.5 mmol/L), 2-chlorophenol concentration (0.22 to 1.76 mmol / L), Peridat concentration (0 to 4 mmol/L), and contact time (0 to 60 minutes) were investigated.
Results: In the combined process of peridate activation with magnesium oxide nanoparticles in the presence of ultraviolet light (UV/PI/MgO), the maximum removal rate of 2-chlorophenol was at pH 7, the concentration of peridates was 4 milliules per liter, the concentration of nano magnesium oxide particle 1 milliliter Mole per liter and initial regimen of 0.44 mM / L of 2-chlorophenol were obtained. In these conditions, about 85% of 2-chlorophenol was removed passing over 60 minutes. . Also, by increasing the initial concentration of adsorbent and adsorbate, the efficiency of removing 2-chlorophenol decreased.
Conclusions: Magnesium oxide nanoparticles are suitable for the removal of 2-chlorophenol and are efficient. The pH value equaling 7, the peridate concentration of 4 mmol/L, magnesium oxide nanoparticles with 0.44 mmol/L concentration and a 60 minute time are the optimum states by 2-chlorophenol.
Keywords: 2-Chlorophenol Ultraviolet Waves Magnesium Oxide Nanoparticle Pridate
Full-Text [PDF 979 kb]   (61 Downloads)    
Type of Study: Orginal Research | Subject: Public Health
Received: 2018/09/26 | Accepted: 2018/09/26 | Published: 2018/09/26

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Volume 10, Issue 2 (10-2018) Back to browse issues page