Study on Performance of Walnut Shells Adsorbent in Nitrate Removal from the Aqueous Solutions

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

ZAZOULI MOHAMMAD ALI; EBRAHIMZADEH MOHAMMAD ALI; Taheri Otaghsara Sayede Sammane; ESLAMI SHAHRAM; esfandiari yahya

Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Journal of Research in Environmental Health Year:2019 | Volume:5 | Issue:2 Page(s): 144-153

Download Full-Text

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Persian Verion

View:

586

Download:

Cites:

Information Journal Paper

Title

Study on Performance of Walnut Shells Adsorbent in Nitrate Removal from the Aqueous Solutions

Author(s)

Keywords

nitrateQ1

walnut shell ashQ2

AdsorptionQ2

AbsorbentQ1

Abstract

Background and Aim: The high concentration of nitrate in drinking water can be detrimental to health. It can be reduced to nitrite in children’ s Stomach and lead to methemoglobinemia. Therefore, the removal of nitrate from polluted waters is necessary. The purpose of this study is to determine the effectiveness of walnut shell adsorbent in nitrates removal from aqueous solutions. Materials and Methods: This experimental study was conducted in a batch laboratory-scale reactor. The walnut shell was collected and burned in the furnace at 700 ס C in 1 hour and sieved in 20-100 mesh. The optimum values of pH, contact time, adsorbent dosage and concentration of nitrate were determined in lab scale conditions. The nitrate concentration was measured in wavelengths of 220 and 275 nm by the spectrophotometer. Also, pHpzc of the Absorbent was determined. Results: The results showed that the optimum pH was 9. In higher and lower proportions of pH, the removal efficiencies were increased and decreased respectively. The removal efficiency was increased until 120 minutes; however, the percentage of removal was reduced after 120 minutes. Adsorption efficiencies were increased and decreased by increasing the adsorbent dosage and the concentration of nitrate, respectively. At optimal condition, the nitrate removal efficiency was 78%. Conclusion: The result of the present study shows that walnut shell can be used as an effective and cheap adsorbent for nitrate removal from aqueous solutions, and the alkaline pH is more efficient for removal process.

Cites

No record.

References

No record.

Cite

APA: Copy

ZAZOULI, MOHAMMAD ALI, EBRAHIMZADEH, MOHAMMAD ALI, Taheri Otaghsara, Sayede Sammane, ESLAMI, SHAHRAM, & esfandiari, yahya. (2019). Study on Performance of Walnut Shells Adsorbent in Nitrate Removal from the Aqueous Solutions. JOURNAL OF RESEARCH IN ENVIRONMENTAL HEALTH, 5(2 ), 144-153. SID. https://sid.ir/paper/359405/en

Vancouver: Copy

ZAZOULI MOHAMMAD ALI, EBRAHIMZADEH MOHAMMAD ALI, Taheri Otaghsara Sayede Sammane, ESLAMI SHAHRAM, esfandiari yahya. Study on Performance of Walnut Shells Adsorbent in Nitrate Removal from the Aqueous Solutions. JOURNAL OF RESEARCH IN ENVIRONMENTAL HEALTH[Internet]. 2019;5(2 ):144-153. Available from: https://sid.ir/paper/359405/en

IEEE: Copy

MOHAMMAD ALI ZAZOULI, MOHAMMAD ALI EBRAHIMZADEH, Sayede Sammane Taheri Otaghsara, SHAHRAM ESLAMI, and yahya esfandiari, “Study on Performance of Walnut Shells Adsorbent in Nitrate Removal from the Aqueous Solutions,” JOURNAL OF RESEARCH IN ENVIRONMENTAL HEALTH, vol. 5, no. 2 , pp. 144–153, 2019, [Online]. Available: https://sid.ir/paper/359405/en

Related Journal Papers