Robbing Yadullah’s water to irrigate Saeid’s garden: hydrology and water rights in a village of Central Iran

Water allocation / Water rights / Irrigation management / Drought / Wells / Dams / Canals / Legal aspects / Villages / Iran / Zayandeh Rud Basin / Jalalabad / Najafabad

Groundwater chemistry of the Lenjanat District, Esfahan Province, Iran

Groundwater / Surface water / Water quality / Wells / River Basins / Iran / Esfahan Province / Lenjanat District / Zayandeh Rud Basin / Chadegan Dam / Zagros Mountains

Adsorption of Arsenic from Aqueous Solutions by Iron Filings and the Effect of Magnetic Field

Aims: Arsenic contamination of natural water resources has become an important environmental problem in the world. The adsorption method by iron filings adsorbent or zero-valent iron was used. The study aimed to evaluate the efficiency of iron filings in arsenite removal from polluted water and to investigate the effect of magnetic field on the process. Materials & Methods: This interventional study was conducted in synthetically polluted water samples with certain arsenic concentrations. With regard to the initial arsenic concentration (0.5 and 2mg/l), iron filings dosages (0, 2.5 and 5g/l), contact times (5, 10 and 15min) and considering the samples before and after magnetic column, 108 samples were prepared. Data was analyzed by paired sample T and one-way ANOVA tests. Findings: The highest mean of removal efficiency at the initial arsenic concentration of 0.5mg/l was seen at the iron filings of 5g/l and 10min contact time (87.7±10.0) and at the initial arsenic concentration of 2mg/l was seen at the iron filings of 5g/l and 15min contact time (86.3±8.4). At the initial arsenic concentration of 0.5mg/l, magnetic field increased the removal efficiency of arsenite at the iron filings dosage of 0g/l and decreased it at the iron filings dosage of 5g/l. The same happened at the initial arsenic concentration of 2mg/l. Conclusion: Arsenic is reduced from the water samples with the iron filings dosage of 5g/l at natural pH. Magnetic field increases the arsenic removal efficiency in the absence of the iron filings and decreases the arsenic removal efficiency in the presence of the iron filings

Photo-Catalytic Activity of ZnO Supported on H-ZSM-5 Zeolite to Reduce Cr(VI) from Aqueous Solutions

Abstract Aims: The application of photocatalytic processes to remove heavy metals in aqueous solutions and industrial wastewater are regarded as extremely effective, clean and without producing waste methods. The goal of the present study was to investigate the photocatalytic activity of ZnO based on H-ZSM-5 zeolite support. Materials & Methods: ZnO/H-ZSM-5 composite synthesized by impregnation method successfully, and photo-reduction of Cr(VI) was investigated via this composite in present of UV light irradiation. The prepared composite was characterized by X-ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM). Data was analyzed by repeated measurement statistical test. Findings: ZnO/H-ZSM-5 (79.5) had better removal photo-reduction activity than pure H-ZSM-5 (8.7; p=0.003) zeolite and ZnO (58.8; p=0.003). The initial concentration of Cr(VI) was a highly influential factor in photo-reduction of Cr(VI); In the way that when the initial concentration increased from 10 to 40mg/l, the photo-reduction percentage decreased from 92.5 to 57.7 in constant operational conditions (p=0.001). Conclusion: ZnO/H-ZSM-5 composite has higher removal photo-catalytic activity than pure ZnO and HZSM-5 zeolite. Photo-reduction of Cr(VI) by ZnO/H-ZSM-5 composite is an efficient technology for the treatment of water and wastewater containing high concentration of Cr(VI)

Water management for sustainable irrigated agriculture in the Zayandeh Rud Basin, Esfahan Province, Iran

Irrigation systemsCropping systemsIrrigated farmingRiver basinsTopographyGeomorphologyClimateHydrologyWater qualityGroundwaterSoil salinitySustainable agricultureIranEsfahan ProvinceZayandeh Rud BasinChadegan Reservoir

Health-related quality of life according to the socioeconomic status of living areas in Iranian children and adolescents: Weight disorders survey

Background: Health-related quality of life (HRQoL) has become a major concern in the field of children�s health research. We assessed HRQoL among Iranian children and adolescents according to the socioeconomic status (SES) of their living region. Methods: Via multistage cluster sampling from rural and urban school students aged 6 to 18 years, this nationwide study was conducted from 2011 to 2012. HRQoL was assessed using the adolescent core version of the Pediatric Quality of Life questionnaire. Through survey data analysis methods, the data were compared according to the SES of the living region, sex, and the living area. Results: Overall, 23043 students participated in the survey (participation rate=92.2). The mean age of the participants was 12.55±3.31 years. Boys accounted for 50.8 of the study population, and 73.4 were from urban areas. At national level, the mean of the HRQoL total score was 81.7 (95 CI: 81.3 to 82.1) with a mean of 83.5 (95 CI: 83.0 to 84.1) for the boys and 79.8 (95 CI: 79.1 to 80.5) for the girls. The highest and the lowest scores, respectively, belonged to social functioning (90.0 95% CI: 89.7 to 90.3) and emotional functioning (78.2 95% CI: 77.7 to 78.7). The highest total HRQoL score belonged to the second highest SES region of the country (mean=83.1; 95% CI: 82.5 to 83.7). The association between total HRQoL and the score of all the subscales and SES in the living area was statistically significant (P<0.001). Conclusion: The results of the present study showed that in the children and adolescents, SES was associated with HRQoL. Accordingly, HRQoL and the related SES differences should be considered one of the priorities in health research and health policy. © 2019, Shiraz University of Medical Sciences. All rights reserved

Groundwater resources modeling of the Lenjanat aquifer system

In Murray-Rust, H.; Droogers, P. (Eds.), Water for the future: linking irrigation and water allocation in the Zayandeh Rud Basin, Iran. Colombo, Sri Lanka: IWM