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26 results on '"Amini, Malihe"'

15. Effect of manure and biochar on the aluminum, copper, and iron bioaccumulation by Salicorniaspecies in soil

Author

Ashrafi, Fahime, Heidari, Ava, Farzam, Mohammad, Karimi, Alireza, and Amini, Malihe

Abstract

Purpose: Phytoremediation experiments were carried out to investigate the ability of two species of Salicornia persica and Salicornia perspolitanafor the extraction of heavy metals including aluminum, iron and copper. In this study, manure and biochar were applied to improve phytoremediation performance. Methods: The two species of S. persicaand S. perspolitanawere grown outdoor in experimental pots. The effect of experimental treatments including manure and biochar on the two species was investigated. Results: The results showed that biochar significantly influenced (p< 0.05) on the accumulation of heavy metals in both S.persicaand S. perspolitana. In biochar treatment, the values of heavy metals in roots and shoots were found to be 3327 mg/kg, 109.17 mg/kg for aluminum, 3527 mg/kg and 142.17 mg/kg for iron, and 73.93 mg/kg and 11.90 mg/kg for copper, respectively. In the manure treatment, the values of heavy metals in the roots and shoots were reported as 3993 mg/kg and 119.29 mg/kg for aluminum, 5542 mg/kg and 179.17 mg/kg for iron and 78.67 mg/kg and 12.74 mg/kg for copper, respectively. Conclusions: In general, the accumulation of heavy metals in S. perspolitanawas higher than S. persica, and our results indicated that the use of biochar and manure caused stabilization of heavy metals in the soil and consequently reduced accumulation of heavy metals in both S. persicaand S. perspolitana.

Published
2023
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18. Green Synthesis of ZnO/SnO2 Nanocomposites Using Pine Leaves and Their Application for the Removal of Heavy Metals from Aqueous Media.

Author

Honarmand, Moones, Amini, Malihe, Iranfar, Arman, and Naeimi, Atena

Subjects
*PINE needles, *HEAVY metals, *NANOCOMPOSITE materials, *METAL ions, *ADSORPTION capacity
Abstract

In this study, ZnO/SnO2 nanocomposites were fabricated via a green and simple route using pine tree leaves for the first time. No expensive reagent or hazardous solvent was used for synthesis of nanocomposites and only natural and eco-friendly materials were utilized. ZnO/SnO2 nanocomposites were characterized by XRD, TEM, SEM and EDS. The adsorption performance of ZnO/SnO2 nanocomposites was studied for the efficient removal of Cu2+, Pb2+ and Zn2+ metal ions. To achieve maximum adsorption capacity of metal ions, the influences of several operating conditions including pH value, ZnO/SnO2 nanocomposites dosage, initial concentration of metal ions and contact time were investigated. Also, equilibrium and kinetics models of metal ions to nanocomposites were studied. Adsorption process could be well defined by the Langmuir isotherm with R2 of 0.88, 0.94 and 0.94 for removal of Cu2+, Pb2+ and Zn2+ ions; respectively. The kinetic data fitted the pseudo-second-order model with the R2 value of 0.99, 1 and 0.99 for removal of Cu2+, Pb2+ and Zn2+ ions; respectively. [ABSTRACT FROM AUTHOR]

Published
2022
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26. Mercury concentration in the breast milk of Iranian women.

Author

Behrooz RD, Esmaili-Sari A, Peer FE, and Amini M

Subjects
Adolescent, Adult, Age Factors, Animals, Environmental Pollutants metabolism, Environmental Pollutants standards, Female, Fishes metabolism, Food Contamination, Geography, Humans, Infant, Iran, Mercury metabolism, Mercury standards, Reference Standards, Reference Values, Risk Assessment, Risk Factors, Young Adult, Environmental Pollutants analysis, Mercury analysis, Milk, Human chemistry
Abstract

Human milk is usually the only source of food for infants during the first 4 to 5 months of their life. In this research, 80 human milk samples were collected from mothers in Tehran, Noushahr and the countryside of Tabriz, Iran, who were not occupationally exposed to mercury. The mean concentration of mercury in breast milk obtained from mothers in the countryside of Tabriz, Noushahr and Tehran was 0.86, 0.15 and 0.12 μg/L, respectively. There was a significant difference in mercury concentration in human breast milk between that from the countryside of Tabriz with that from Tehran and Noushahr. Only 3.7% of infant samples (three infants) had mercury concentration higher than normal versus the WHO recommended limit (0.5 μg g(-1)). The fish consumption of these mothers in Tehran and Noushahr was a factor that significantly affected the mercury concentration in their breast milk. Also, their age affected the mercury levels in breast milk (p = 0.04).

Published
2012
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