Publications by authors named "Hosseinali Asgharnia"

3 Publications

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Data on wastewater treatment plant by using wetland method, Babol, Iran.

Data Brief 2018 Feb 20;16:1056-1061. Epub 2017 Dec 20.

Department of Environment and Energy, West Tehran Branch, Islamic Azad University, Tehran, Iran.

Date in this paper highlights the applications of constructed horizontal surface flow (HF-CW) wetland with two different local plants (Louis latifoila and Phragmites -) at the wastewater treatment plant in Babol city. This system was designed as an advanced treatment unit in field scale after the treatment plant. Parameters such as Total Dissolved Solid (TDS), Total Suspended Solid (TSS) Turbidity, Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD), were investigated. The result shows that treatment efficiency increases with the passage of time. The efficiency of Phragmites planted setups in open environment was fairly good for all studied parameters (28.6% of TDS, 94.4% for TSS, 79.8% for turbidity, 93.7% for BOD and 82.6% for COD). The efficiency of the set up was also good, but lower than that of Phragmites (26.5% of TDS, 76.9% for TSS, 71.5% for turbidity, 79.1 for BOD and 68.8% for COD). In brief, the obtained dates show that using local plants in (HF-CW) wetland not only effectively reduces various contaminants from the effluent of the wastewater according to (WHO & EPA), but it is also a cost- effective and environmentally friendly method. Also, it was calculated that in full scale operation [time (1 day) and a depth (0.3 m)], 8 ha of wetland was needed.
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February 2018

Performance, kinetic, and biodegradation pathway evaluation of anaerobic fixed film fixed bed reactor in removing phthalic acid esters from wastewater.

Sci Rep 2017 02 20;7:41020. Epub 2017 Feb 20.

Department of Environmental Health Engineering, Faculty of Health, Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.

Emerging and hazardous environmental pollutants like phthalic acid esters (PAEs) are one of the recent concerns worldwide. PAEs are considered to have diverse endocrine disrupting effects on human health. Industrial wastewater has been reported as an important environment with high concentrations of PAEs. In the present study, four short-chain PAEs including diallyl phthalate (DAP), diethyl phthalate (DEP), dimethyl phthalate (DMP), and phthalic acid (PA) were selected as a substrate for anaerobic fixed film fixed bed reactor (AnFFFBR). The process performances of AnFFFBR, and also its kinetic behavior, were evaluated to find the best eco-friendly phthalate from the biodegradability point of view. According to the results and kinetic coefficients, removing and mineralizing of DMP occurred at a higher rate than other phthalates. In optimum conditions 92.5, 84.41, and 80.39% of DMP, COD, and TOC were removed. DAP was found as the most bio-refractory phthalate. The second-order (Grau) model was selected as the best model for describing phthalates removal.
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February 2017

Influence of bioaugmentation on biodegradation of phenanthrene-contaminated soil by earthworm in lab scale.

J Environ Health Sci Eng 2014 24;12(1):150. Epub 2014 Dec 24.

Department of Environmental Health Engineering, School of Public Health, Golestan University of Medical Sciences, Gorgan, Iran.

Background: Use of earthworm to eliminate the phenanthrene from the soil (bioaccumulation) is developed as an economical method. Bioaugmentation of microorganism was used for promotion of bioaccumulation by earthworm. The aim of this study was to determine the bioaccumulation or biodegradation of phenanthrene by Eisenia fetida and bacterial consortium in polluted soil.

Methods: The amount of 0.4 kg of the polluted soil in the ratio of 10 and 30 mg phenanthrene per kg of dry soil was transferred into each pot. Afterwards, bacteria and earthworms were added to each pot in separate and combination. The samples were kept under field conditions, and the retention concentrations of phenanthrene were analyzed after 8 weeks.

Results: Results showed that the Eisenia fetida was able to significantly remove phenanthrene from the polluted soil samples. Bioaccumulation and bioaugmentation alone have the removal efficiency of 60.24% and 50.3%, respectively. In the combined mode, phenanthrene removal efficiency was 63.81%.

Conclusions: The current study indicated that the use of earthworms, could improve both phenanthrene bioavailability and microbial activity, which led to enhancing removal of carbon-based pollutants.
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January 2015