en
jalali
1393
11
1
gregorian
2015
2
1
2
1
online
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fulltext
en
Investigation of ozone and coagulant material’s (aluminum sulfate, ferric chloride, poly aluminum chloride and lime) efficiency in “Kerman Kork” industry wastewater treatment
Background: Entry of untreated wastewater of wool scouring factories has been associated with many environmental hazards because of high rate of pollution. Presently effective treatment methods and reducing the costs of operation and maintenance from treatment units have always been under the attention of this industry owners. The aim of this survey is to present a suitable method for the treatment of wool scouring.
Methods: In this study, chemical coagulant is used for wastewater treatment (aluminum sulfate, ferric chloride, poly aluminum chloride and lime). And then these materials with “ozone” as a strong oxidative in reduction of the amount of Chemical Oxygen Demand (COD) in wastewater effluent has been surveyed.
Results: The results of this work showed that only ferric chloride and aluminum sulfate among the above chemical coagulant had a high efficiency in the turbidity removal. Productivity of turbidity removal using ferric chloride with the pH of 4 to 5 was 99%, and turbidity was reduced from 166 Nephelometric Turbidity Units (NTU) to 1.5 NTU, and productivity of turbidity removal using aluminum sulfate within the pH 4.5 to 5 was 99.33% that reduced turbidity from 166 to 1.1 NTU. Results of ozonation with 5 g/hour and the oxygen flow of 2.5 litter per min with the pH assess of 15, 30, 45, 60, 90, 120, and 150 min to wastewater from chemical treatment with ferric chloride showed that the rate of COD was reduced from 24700 mg/L to 2940 mg/L. In ozonation to wastewater of chemical treatment with aluminum sulfate within the above rang of time, the rate of COD was reduced from 22500 mg/l to 4800 mg/l.
Conclusion: We can be hopeful that in near future, getting the cheap technology of ozone production in industrial scale, one can use this technology for the propose of removal of pollutants having removal preferable by help of advanced treatment approaches.
Industrial wastewater, COD, Wool scouring, Chemical treatment, Ferric chloride, Aluminum sulfate, Ozonation, Turbidity
1
6
http://ehemj.com/browse.php?a_code=A-10-1-10&slc_lang=en&sid=1
2015/02/3
1393/11/14
2015/02/3
1393/11/14
Amir Hussein
Javid
Graduate School of Marine Science and Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran
0031947532846001883
0031947532846001883
No
Mohammad
Malakootian
Environmental Health Engineering Research Center and Department of Environmental Health, Kerman University of Medical Sciences, Kerman, Iran
0031947532846001884
0031947532846001884
No
Mohsen
Mehdipour
Environmental Health in SBMU, Member of Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran
mmehdipoor@yahoo.com
0031947532846001885
0031947532846001885
Yes
en
Survey of water quality in Moradbeik river basis on WQI index by GIS
Background: Survey of pollution and evaluation of water quality in rivers with Oregon Water Quality Index (OWQI) and GIS are effective tools for management of the impact of environmental water resources. The information in calculating the WQI of Moradbeik river allowed us to take our tests results and make a scientific conclusion about the quality of water. GIS can be a powerful tool for developing solutions for water resources problems for assessing water quality, determining water availability, preventing flooding, understanding the natural environment, and managing water resources on a local or regional scale. Methods: The WQI of Moradbeik river consists of nine tests: Fecal Coliform (FC), Biochemical Oxygen Demand (BOD5), Nitrates (NO3), Total Phosphate (PO4), pH, temperature, Dissolved Oxygen (DO), turbidity, and Total Solid (TS). Water quality of Moradbeik river was investigated for 12 months. Concentrations of these nine variables were normalized on a scale from 0 to 100 and translated into statements of water quality (excellent, good, regular, fair, and poor). Also this data were analyzed with WQI index, and then river basis on water quality was zoning by GIS. Results: The average of WQI was 61.62, which corresponded to ‘‘medium’’ quality water at the sampling point 1 (best station) and decreased to around 26.41 (bad quality) at sampling point 6. The association between sampling points and water quality indexes was statistically significant (P<0.05). Conclusion: Based on physical, chemical and biological agent monitoring and also with control of water quality indexes of these points, we observed wastewater and other river pollutants.
Water quality evaluation, Water quality index, GIS, Moradbeik
7
11
http://ehemj.com/browse.php?a_code=A-10-27-10&slc_lang=en&sid=1
2015/02/32015/01/31
1393/11/11
2015/02/32015/01/31
1393/11/11
Mohammad Taghi
Samadi
Department of Environmental Health Engineering, School of Public Health and Center for Health Research, Hamadan University of Medical Sciences, Hamadan, Iran
0031947532846001886
0031947532846001886
No
Shahram
Sadeghi
Student Research Committee, Department of Environmental Health Engineering, School of Public Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
0031947532846001887
0031947532846001887
No
Alireza
Rahmani
Department of Environmental Health Engineering, School of Public Health and Center for Health Research, Hamadan University of Medical Sciences, Hamadan, Iran
0031947532846001888
0031947532846001888
No
Mohammad Hossien
Saghi
Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
saghi9@gmail.com
0031947532846001889
0031947532846001889
Yes
en
Antimicrobial activity, toxicity and stability of phytol as a novel surface disinfectant
Background: Although various surface disinfectants have been introduced, most of them are toxic. The use of natural antimicrobial agent e.g. phytol, extracted from Leptadenia pyrotechnica is a new strategy. The aim of this study was to evaluate the antimicrobial activity, toxicity, and stability of phytol. Methods: The serial concentrations of phytol were prepared, and separately incubated with four microbial isolates. Then, its Minimum Inhibitory Concentration (MIC) was measured for each microorganism. For toxicity test, serial concentrations (62.5, 125, 250, 500 and 1000 &mug/mL) of phytol were incubated with mouse skin cells, and then cell viability was calculated by MTT assay. For stability test, three common surfaces (stone, steel, and MDF) were considered. Then, 100 &muL of phytol was separately spread over their surface, and they have been kept at lab panel for 12, 24 and 36 hours. After incubation, two samples were obtained from each surface and inoculated on nutrient agar plates. Finally, colony count was read for each surface. T-test was used to evaluate the significant differences between groups, and P>0.05 considered as level of significant difference. Results: The MIC50 of phytol against E.coli, C.albicans, and A.niger was 62.5 &mug/mL, and against S.aureus was >1000 &mug/mL. MTT assay showed that the toxicity of phytol was dose and time dependent. The stability test demonstrated that phytol was stable on the stone, MDF, and steel surfaces until 36 hours. Conclusion: It can be concluded that phytol has high antimicrobial activity, high stability, and low toxicity.
Antimicrobial activity, Phytol, Toxicity, Stability
13
16
http://ehemj.com/browse.php?a_code=A-10-1-11&slc_lang=en&sid=1
2015/02/32015/01/312015/02/14
1393/11/25
2015/02/32015/01/312015/02/14
1393/11/25
Mohammad Taghi
Ghaneian
Department of Environmental Health, Faculty of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
0031947532846001890
0031947532846001890
No
Mohammad Hassan
Ehrampoush
Department of Environmental Health, Faculty of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
0031947532846001891
0031947532846001891
No
Ali
Jebali
Department of Laboratory Sciences, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
0031947532846001892
0031947532846001892
No
Seyedhossein
Hekmatimoghaddam
Department of Laboratory Sciences, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
0031947532846001893
0031947532846001893
No
Mohammad
Mahmoudi
Department of Environmental Health, Faculty of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
mahmoodi170@yahoo.com
0031947532846001894
0031947532846001894
Yes
en
Evaluation of natural zeolite clinoptilolite efficiency for the removal of ammonium and nitrate from aquatic solutions
Background: Surface water and groundwater pollution with various forms of nitrogen such as ammonium and nitrate ions is one of the main environmental risks. The major objectives of this study were to evaluate the capacity of natural zeolite (clinoptilolite) to remove NO3- and NH4+ from polluted water under both batch and column conditions. Methods: The laboratory batch and column experiments were conducted to investigate the feasibility of clinoptilolite as the adsorbent for removal of nitrate (NO3&minus) and ammonium (NH4+) ions from aqueous solution. The effects of pH, clinoptilolite dosage, contact time, and initial metal ion concentration on NO3- and NH4+ removal were investigated in a batch system. Results: Equilibrium time for NO3 and NH4 ions exchange was 60 minutes and the optimum adsorbent dosage for their removal was 1 and 2.5 g/L, respectively. The adsorption isotherm of reaction (r> 0.9) and optimum entered concentration of ammonium and nitrate (30 and 6.5 mg/L, respectively) were in accordance with Freundlich isotherm model. The ammonium removal rate increased by 98% after increasing the contact time. Conclusion: Our findings confirm that natural Clinoptilolite can be used as one of effective, suitable, and low-costing adsorbent for removing ammonium from polluted waters.
Ammonium, Nitrate, Adsorption, Clinoptilolite
17
22
http://ehemj.com/browse.php?a_code=A-10-1-18&slc_lang=en&sid=1
2015/02/32015/01/312015/02/142015/04/18
1394/1/29
2015/02/32015/01/312015/02/142015/04/18
1394/1/29
Mozhdeh
Murkani
Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
0031947532846001742
0031947532846001742
No
Mohammad
Nasrollahi
Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
0031947532846001743
0031947532846001743
No
Maryam
Ravanbakhsh
Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
0031947532846001744
0031947532846001744
No
Parvaneh
Bahrami
Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
0031947532846001745
0031947532846001745
No
Neamat
Jaafarzadeh Haghighi Fard
Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
jaafarzadeh-n@ajums.ac.ir
0031947532846001746
0031947532846001746
Yes
en
Investigating the efficiency and kinetic coefficients of nutrient removal in the subsurface artificial wetland of Yazd wastewater treatment plant
Background: Investigating the performance of naturally operated treatment plants may be due to the fact that they cannot be operated as desired, or that they should be modified to achieve good performance e.g. for nutrients removal. The advantage of kinetic coefficient determination is that the model can be adjusted to fit data and then used for analyzing alternatives to improve the process. This study investigates the efficiency of subsurface artificial wetland and determines its kinetic coefficients for nutrient removal. Methods: The present study investigated the kinetics of biological reactions that occurred in subsurface wetland to remove wastewater nutrient. Samples were taken from 3 locations of wetlands for 6 months. The nutrient content was determined through measuring Total Kjehldahl Nitrogen (TKN), ammonium, nitrate, and phosphate values. Results: Average levels for TKN, ammonium, nitrate, and phosphate in effluent of control wetland were 41.15, 23.59, 1.735, and 6.43 mg/L, and in wetland with reeds were 28.91, 19.99, 1.49 and 5.63 mg/L, respectively. First-order, second-order, and Stover-Kincannon models were applied and analyzed using statistical parameters obtained from the models (Umax, KB). Conclusion: The nutrients removal at Yazd wastewater treatment plant was remarkable, and the presence of reeds in wetland beds was not very efficient in improving system performance. Other more efficient plants are suggested to be evaluated in the system. Stover-Kincannon kinetic model provided predictions having the closest relationship with actual data obtained from the field.
Wastewater, Wetland, Nutrients, Kinetic coefficients, Yazd
23
30
http://ehemj.com/browse.php?a_code=A-10-1-12&slc_lang=en&sid=1
2015/02/32015/01/312015/02/142015/04/182015/03/16
1393/12/25
2015/02/32015/01/312015/02/142015/04/182015/03/16
1393/12/25
Mahdi
Farzadkia
Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
0031947532846001895
0031947532846001895
No
Mohammad Hassan
Ehrampoush
Department of Environmental Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
0031947532846001896
0031947532846001896
No
Ehsan
Abouee Mehrizi
Environment Research Center, Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, and Department of Environmental Health Engineering, Faculty of Public Health, North Khorasan University of Medical Sciences, Bojnurd, Iran
0031947532846001897
0031947532846001897
No
Shahram
Sadeghi
Department of Environmental Health Engineering, School of Public Health, Student Research Committee, Kurdistan University of Medical Sciences, Sanandaj, Iran
0031947532846001898
0031947532846001898
No
Parvaneh
Talebi
Department of Environmental Health Engineering, School of Public Health, Islamic Azad University, Maybod Branch, Maybod, Iran
0031947532846001899
0031947532846001899
No
Akbar
Salehi
Department of Environmental Health Engineering, School of Public Health, Islamic Azad University, Maybod Branch, Maybod, Iran
0031947532846001900
0031947532846001900
No
Majid
Kermani
Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
majidkermani@yahoo.com
0031947532846001901
0031947532846001901
Yes
en
Biodegradation of glyphosate herbicide by Salinicoccus spp isolated from Qom Hoze-soltan lake, Iran
Background: Glyphosate (N-phosphonomethyl Glycine) is an organophosphorus pesticide with dangerous effects on the environment. In this study, the biodegradation of glyphosate herbicide by halophilic bacteria isolated from Qom Hoze-Soltan Lake has been investigated. Methods: After sampling and bacterial isolation, native halophilic strains grown in the presence of glyphosate at a wavelength of 660 nm and also the disappearance of the glyphosate in the plates at a wavelength of 220 nm were determined and the dominant bacteria were isolated. Biochemical, molecular (according to the 16S rRNA sequence), antibiotic, and the Minimum Inhibitory Concentration (MIC) test was performed for the dominant bacteria. Analysis of the remaining glyphosate herbicide was performed by HPLC analysis after derivation with FMOC-Cl. Results: According to the results of the biochemical, antibiotic and molecular 16S rRNA tests, the native halophilic isolates with the ability to biodegrade glyphosate were gram positive cocci very similar to Salinicoccus spp. The results of HPLC showed that Salinicoccus spp is able to biodegrade glyphosate herbicide. Conclusion: The native bacteria in Qom Hoze-soltan lake, Iran can be used for biodegradation of glyphosate herbicide.
Glyphosate, Biodegradation, Salinicoccus spp
31
36
http://ehemj.com/browse.php?a_code=A-10-1-13&slc_lang=en&sid=1
2015/02/32015/01/312015/02/142015/04/182015/03/162015/03/17
1393/12/26
2015/02/32015/01/312015/02/142015/04/182015/03/162015/03/17
1393/12/26
Yaser
Sharifi
Department of Microbiology, Qom Branch, Islamic Azad University, Qom, Iran
0031947532846001902
0031947532846001902
No
Ahmad Ali
Pourbabaei
Department of Microbiology, Qom Branch, Islamic Azad University, Qom, Iran
0031947532846001903
0031947532846001903
No
Ali
Javadi
Department of Pathobiology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
arm1358@yahoo.com
0031947532846001904
0031947532846001904
Yes
Mohammad Hossein
Abdolmohammadi
Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran
0031947532846001905
0031947532846001905
No
Mehri
Saffari
Department of Agronomy and Plant Breeding, Faculty of Agriculture, Shahid Bahonar University, Kerman, Iran
0031947532846001906
0031947532846001906
No
Abbas
Morovvati
Department of Microbiology, Qom Branch, Islamic Azad University, Qom, Iran
0031947532846001907
0031947532846001907
No
en
Determination of the level of parasitic infection (Cryptosporidium and Giardia) of the vegetables marketed in Ilam city
Background: Infected with intestinal parasites is one of the most important health and economical problems, which could have different effects, such as diarrheal diseases or death associated. The purpose of this study was to determine the level of prevalence of Cryptosporidium and Giardia parasites in the vegetable marketed in Ilam city. Methods: This study was performed on 280 samples of fresh vegetables and lettuce in Ilam. The samples were taken at the level of 500 grams from the places where vegetables and lettuce are sold. Micro liters of each sample was placed on the slide using automatic micropipette, and Logel and Zyl-Nelson stainings were performed in order to identify Cryptosporidium and Giardia. Results: From 200 samples, 54 samples were contaminated to Cryptosporidium oocyte and 13 samples to Giardia cysts. From 80 lettuce samples also 32 samples were contaminated to Cryptosporidium oocyte, and 6 samples contaminated to Giardia cysts. The results showed that the overall infection was 37%. Infection with Giardia cysts was 6.8% and infection with Cryptosporidium oocyte was 30.7%, and Cryptosporidium infection rates in vegetables and lettuce were different. This difference was statistically significant (P<0.05). Conclusion: As a result of this research it is determined that the prevalence of Giardia and Cryptosporidium in Ilam vegetables is significantly higher, and the contamination of lettuce is far greater. Therefore, authorities should be more attentive to the field of education and the control of parasitic diseases.
Cryptosporidium, Oocyte, Giardia lamblia, Vegetables
37
40
http://ehemj.com/browse.php?a_code=A-10-1-14&slc_lang=en&sid=1
2015/02/32015/01/312015/02/142015/04/182015/03/162015/03/172015/04/15
1394/1/26
2015/02/32015/01/312015/02/142015/04/182015/03/162015/03/172015/04/15
1394/1/26
Moyad
Avazpoor
Department of Environmental Health Engineering , Ilam University of Medical Science, Ilam, Iran
m_f_1859@yahoo.com
0031947532846001908
0031947532846001908
Yes
Mohammad Taqi
Yousefipoor
Ilam University of Medical Science, Ilam, Iran
0031947532846001909
0031947532846001909
No
Majid
Dusty
Department of Parasitology, Ilam University of Medical Science, Ilam, Iran
0031947532846001910
0031947532846001910
No
Mohsen
Mehdipour
PhD Student of Environmental Health in SBMU, Member of Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran
0031947532846001911
0031947532846001911
No
Fariba
Seifipour
Department of Environmental Health Engineering, Ilam University of Medical Science, Ilam, Iran
0031947532846001912
0031947532846001912
No
Zeinab
Gholami
Student of Environmental Health, Tehran University of Medical Science, Tehran, Iran
0031947532846001913
0031947532846001913
No
en
Efficiency of lead removal from drinking water using cationic resin Purolite
Background: Today, issues such as water shortage, difficulties and costs related to supplying safe water, and anomalous concentrations of heavy metals in groundwater and surface water resources, doubled the necessity of access to technical methods on removing these pollutants from water resources. Methods: In this lab study, cationic resin Purolite S-930 (with co-polymer styrene di-vinyl benzene structure) was used for lead removal from drinking water containing up to 22 &mug/L. Using statistical analysis and designing a full factorial experiment are the most important effective parameters on lead removal obtained through ion exchange process. Results: Analysis of response and interaction parameters of ion exchange showed that the resin column height has maximum and pH value has minimum effect on the efficiency of lead removal from aquatic environment. Trinary interaction of “effective size, flow rate, resin column high” has the most important for lead removal efficiency in this system. So the maximum efficiency was obtained at the mesh = 40, bed height =1.6 meter, and pH= 6.5. At the best operation conditions, ability to remove 95.42% of lead concentration can be achieved. Conclusion: Using the resin Purolite S-930 during 21-day service with 91.12% of mean lead removal ratio from drinking water is an economic and technical feasibility.
Lead, Resin, Purolite, Interaction
41
45
http://ehemj.com/browse.php?a_code=A-10-1-16&slc_lang=en&sid=1
2015/02/32015/01/312015/02/142015/04/182015/03/162015/03/172015/04/152015/04/18
1394/1/29
2015/02/32015/01/312015/02/142015/04/182015/03/162015/03/172015/04/152015/04/18
1394/1/29
Ashour Mohammad
Merganpour
Golestan province Rural Water ;Wastewater Co, Gorgan, Iran
0031947532846001914
0031947532846001914
No
Gholamabbas
Nekuonam
Environmental Health Engineering Research Center, Department of Environmental Health Engineering, School of Public Health, Kerman University of Medical Sciences, Kerman, Iran
0031947532846001915
0031947532846001915
No
Omid
Alipour Tomaj
Department of Agriculture and Natural Resources, Gorgan Branch, Islamic Azad University, Gorgan, Iran
0031947532846001916
0031947532846001916
No
Yousef
Kor
Gorgan Healthcare Center, Golestan University of Medical Sciences, Gorgan, Iran
yor54@yahoo.com
0031947532846001917
0031947532846001917
Yes
Hasan
Safari
Health Faculty, Golestan University of Medical Sciences, Gorgan, Iran
0031947532846001918
0031947532846001918
No
Khosro
Karimi
Gorgan Healthcare Center, Golestan University of Medical Sciences, Gorgan, Iran
0031947532846001919
0031947532846001919
No
Vahid
Kheirabadi
Golestan Province Environmental Protection Organization, Gorgan, Iran
0031947532846001920
0031947532846001920
No