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:: Volume 4, Number 4 (Autumn 2015 2015) ::
Arch Hyg Sci 2015, 4(4): 187-191 Back to browse issues page
Application of walnut shell modified with Zinc Oxide (ZnO) nanoparticles in removal of natural organic matters (NOMs) from aqueous solution
ali naghizadeh, Rasoul Khosravi, Elham Derakhshani *, Habibeh Shahabi, Fatemeh Ghasemi
Birjand University of Medical Science, Birjand,
Abstract:   (504 Views)

Background & Aims of the Study: Natural organic matters (NOMs) are a mixture of chemically complex polyelectrolytes produced mainly from the decomposition of plant and animal residues that are present in all surface and groundwater resources. This paper evaluates the aqueous NOMs adsorption efficiency on walnut shell modified with Zinc Oxide (ZnO). Materials & Methods: This study examined the feasibility of removing NOMs from aqueous solutions using walnut shell modified with ZnO. The effects of NOMs concentration, modified walnut shell with ZnO dosage, and pH on adsorption of NOMs by modified walnut shell with ZnO were evaluated. Results: The adsorption capacities of modified walnut shell with ZnO in the best conditions were 37.93 mg/g. The results also demonstrated that adsorption capacity of NOMs on modified walnut shell with ZnO was higher in lower pHs due to significantly high electrostatic attraction exists between the positively charged surface of the adsorbent and negatively charged NOMs. And finally adsorption capacity decreases as adsorbent dose increase. Conclusion: Walnut shell modified with ZnO can be proposed as a natural adsorbent in the removal of NOMs from aqueous solutions

Keywords: shell, ZnO, natural organic matters
Full-Text [PDF 371 kb]   (440 Downloads)    
Type of Study: Research | Subject: General
Received: 2016/02/13 | Accepted: 2016/02/23 | Published: 2016/02/23
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naghizadeh A, Khosravi R, Derakhshani E, Shahabi H, Ghasemi F. Application of walnut shell modified with Zinc Oxide (ZnO) nanoparticles in removal of natural organic matters (NOMs) from aqueous solution. Arch Hyg Sci. 2015; 4 (4) :187-191
URL: http://jhygiene.muq.ac.ir/article-1-52-en.html
Volume 4, Number 4 (Autumn 2015 2015) Back to browse issues page
Archives of Hygiene Sciences Archives of Hygiene Sciences
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