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11 results on '"Karbasdehi, Vahid Noroozi"'

6. A new bioindicator, shell of Trachycardium lacunosum, and sediment samples to monitors metals (Al, Zn, Fe, Mn, Ni, V, Co, Cr and Cu) in marine environment: The Persian Gulf as a case

Author

Karbasdehi, Vahid Noroozi, primary, Dobaradaran, Sina, additional, Nabipour, Iraj, additional, Ostovar, Afshin, additional, Vazirizadeh, Amir, additional, Ravanipour, Masoumeh, additional, Nazmara, Shahrokh, additional, Keshtkar, Mozhgan, additional, Mirahmadi, Roghayeh, additional, and Noorinezhad, Mohsen, additional

Published
2016
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10. FLUORIDE CONTENT OF POPULAR PERSIAN HERBAL DISTILLATES.

Author

Soleimani, Farshid, Karbasdehi, Vahid Noroozi, Keshtkar, Mozhgan, Dobaradaran, Sina, Esmaili, Abdolhamid, and Mahvi, Amir Hossein

Subjects
*DISTILLATION, *HERBS, *FLUORIDES
Abstract

The fluoride ion (F) concentration levels of the 20 most popular herbal distillates sold in Iran were determined. The mean F content of the samples was 50 μg/L with a range of not detectable-340 μg/L. The estimated maximum daily, weekly, and monthly intakes of F were 34, 238, and 1020 μg/day respectively. The results of this study showed that the low concentration levels of F found in Persian herbal distillates should not normally significantly increase the F intake of consumers. [ABSTRACT FROM AUTHOR]

Published
2016

11. Biosorption of fluoride from aqueous phase onto Padina sanctae crucis algae: evaluation of biosorption kinetics and isotherms

Author

Dobaradaran, Sina, Zazuli, Mohammad Ali, Keshtkar, Mozhgan, Noshadi, Sara, Khorsand, Maryam, Ghasemi, Fatemeh Faraji, Karbasdehi, Vahid Noroozi, Amiri, Leila, and Soleimani, Farshid

Abstract

Biosorption is considered as one of the favorable treatment technologies for fluoride removal from aqueous solutions. The present study is the first attempt to evaluate the biosorption capability of the Padina sanctae crucis algae in removal of fluoride from aqueous phase. Biosorption was studied in a series of batch experiments at room temperature (25 ± 1°C). The effects of experimental parameters such as biosorbent dose (0.8–64 g/L), contact time (5–120 min), pH (3, 7, and 11), initial fluoride concentration (2–8 mg/L), and the presence of competing anions (bicarbonate, nitrate, carbonate, sulfate, and chloride) were investigated. The highest removal biosorption was observed at 48 g/L biosorbent dose, 5 min contact time, and initial fluoride concentration at 8 mg/L (97% fluoride removal). Competing anions had no significant effect on the fluoride biosorption by the biosorbent. Freundlich model was better fitted than Langmuir model that showed heterogeneous biosorption surface and the possibility of multilayer biosorption of fluoride by biosorbent. The biosorption kinetics was controlled by the pseudo-second-order and pore diffusion models. It was concluded that the Padina sanctae crucis algae can be used as an effective, low-cost, and environmental friendly biosorbent for fluoride removal from aqueous solutions.

Published
2016
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