Volume 15, Issue 44 (6-2014)
Zanko J Med Sci 2014, 15(44): 37-47 |
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Abstract: (3596 Views)
ABSTRACT
Background and Aim: The presence of humic acid in water resources is the most health problems of many communities. There are various methods for decreasing or removing of humic acid that is in water resources and is one of the Trihalomethanes (THMs) precursors. The aim of this study is investigation of the use of Single Walled Carbon Nanotubes (SWCNTs) as adsorbent at humic acid adsorption process in acidic conditions from aqueous solution.
Material and Methods: This experimental study has done in batch system that the effects of Variations such as humic acid concentration, dose of nanotubes and contact time has investigated in removal of humic acid and adsorption Kinetics and isotherm has investigated too.
Results: results of this study show that by increasing of adsorbent dose from 0.2 to 1 gr, removal efficiency of humic acid with 10 mg/l initial concentration had increased from 92.5 to 100 %. By decreasing of humic acid initial concentration from 30 to 5 mg/l removal efficiency had increased from 96 to 100 % after 3 hours. This study also had determined that appropriate time for receiving to equalization state of humic acid adsorption is 3 hours. Maximum surface adsorption of humic acid at acidic pH (pH = 4) was 48 mg/gr.
Conclusion: Single Walled Carbon Nanotubes due to large surface area, small size, exclusive network arrangement and in consequence very high reactivity and noticeable performance as adsorbent in removal of organic pollutants from aqueous solution, could be effective for removal of humic acid.
Type of Study: Research |
Subject:
Special
Received: 2014/05/2 | Accepted: 2014/05/28 | ePublished: 2014/06/15
Received: 2014/05/2 | Accepted: 2014/05/28 | ePublished: 2014/06/15
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