Aims: Microbial fuel cells (MFCs) are promising method for electricity generation with simultaneo... more Aims: Microbial fuel cells (MFCs) are promising method for electricity generation with simultaneous treatment of organic compounds in wastewater by using bacteria. Scope: In a pilot study, Synthetic wastewater based on glucose was used as carbon resource for microorganisms and ruminant rumen bacteria were used for microbial consortium. Microbial fuel cells with two compartments were operated in continuous mode at 720 hrs and temperature 20±4 o C. Organic loading rate and hydraulic retention time were effective factors in power density and voltage generation. Conclusion: By increasing the organic loading rate and decreasing retention time, power density increase too. Maximum voltage and power generation in operating period were 700mV and 1700mW/m 2 , respectively. Moreover, volumetric power reached 12 W/m 3 and peak power produced at 10kΩ resistance.
This study aimed to explore the difference between hospital and municipal wastewater treatment pr... more This study aimed to explore the difference between hospital and municipal wastewater treatment processes regarding the reduction of antibiotic-resistant bacteria (ARB) and antibiotic resistant genes (ARGs). Samples were collected from raw and final effluent of four different wastewater treatment plants (WWTPs). ARB were evaluated by modified HPC method. Extraction and purification of DNA from the samples were conducted by Freeze-Thaw and DNA extraction kit. Real-time PCR (qPCR) was utilized to obtain the quantity of Sul1 and ErmB genes in the samples. For standard control in qPCR, was used plasmid containing each gene sequence. The average ARB concentration in the raw wastewater and effluent was 1.03×10-6.63×10 CFU/100mL. Quantitative range of the Sul1 and ErmB genes were obtained as 0-8.3×10 Copies/100 mL and 9.29×109.64×10 Copies/100 mL, respectively. The results show that urban wastewaters play a more significant role than hospital wastewaters in the emission of sulfonamides and ...
AbstractIn this study, magnetic zeolite nanocomposite with an average diameter of 90–100 nm was s... more AbstractIn this study, magnetic zeolite nanocomposite with an average diameter of 90–100 nm was synthesized through a chemical co-precipitation method, and used for the adsorption of dimethyl phthalate (DMP) from aqueous solution. The surface morphology of the adsorbent was characterized by scanning electron microscope, transmission electron microscopy, energy dispersive X-ray, vibrating sample magnetometer, dynamic light scattering, Brunauer, Emmett, Teller, and X-ray diffraction techniques. Batch system was followed to optimize the conditions for the removal of DMP. The adsorption experiments were carried out in terms of pH, contact time, various concentrations of DMP as well as nanocomposite, and temperature. The results showed that with increase in adsorbent dosage and contact time increased the adsorption efficiency. However, the efficiency decreased by increasing pH and initial DMP concentration. Experimental data were found to fit well with Langmuir isotherm (R2 > 0.981) in all the studied temperat...
Abstract: Background and Objectives: leachate from municipal solid waste landfill is a strong sew... more Abstract: Background and Objectives: leachate from municipal solid waste landfill is a strong sewage having hazardous toxic substances. It should be treated by choosing a simple, economical, and eco-friendly method. The aim of this study is reduction of COD from the Qom City landfill leachate using electrocoagulation process. Materials and Methods: The experimental study was carried out at bench scale using a batch reactor during 2010. We used a Plexiglas reactor having 0.7 liter capacity, containing nine plate aluminum ...
Aims: Microbial fuel cells (MFCs) are promising method for electricity generation with simultaneo... more Aims: Microbial fuel cells (MFCs) are promising method for electricity generation with simultaneous treatment of organic compounds in wastewater by using bacteria. Scope: In a pilot study, Synthetic wastewater based on glucose was used as carbon resource for microorganisms and ruminant rumen bacteria were used for microbial consortium. Microbial fuel cells with two compartments were operated in continuous mode at 720 hrs and temperature 20±4 o C. Organic loading rate and hydraulic retention time were effective factors in power density and voltage generation. Conclusion: By increasing the organic loading rate and decreasing retention time, power density increase too. Maximum voltage and power generation in operating period were 700mV and 1700mW/m 2 , respectively. Moreover, volumetric power reached 12 W/m 3 and peak power produced at 10kΩ resistance.
This study aimed to explore the difference between hospital and municipal wastewater treatment pr... more This study aimed to explore the difference between hospital and municipal wastewater treatment processes regarding the reduction of antibiotic-resistant bacteria (ARB) and antibiotic resistant genes (ARGs). Samples were collected from raw and final effluent of four different wastewater treatment plants (WWTPs). ARB were evaluated by modified HPC method. Extraction and purification of DNA from the samples were conducted by Freeze-Thaw and DNA extraction kit. Real-time PCR (qPCR) was utilized to obtain the quantity of Sul1 and ErmB genes in the samples. For standard control in qPCR, was used plasmid containing each gene sequence. The average ARB concentration in the raw wastewater and effluent was 1.03×10-6.63×10 CFU/100mL. Quantitative range of the Sul1 and ErmB genes were obtained as 0-8.3×10 Copies/100 mL and 9.29×109.64×10 Copies/100 mL, respectively. The results show that urban wastewaters play a more significant role than hospital wastewaters in the emission of sulfonamides and ...
AbstractIn this study, magnetic zeolite nanocomposite with an average diameter of 90–100 nm was s... more AbstractIn this study, magnetic zeolite nanocomposite with an average diameter of 90–100 nm was synthesized through a chemical co-precipitation method, and used for the adsorption of dimethyl phthalate (DMP) from aqueous solution. The surface morphology of the adsorbent was characterized by scanning electron microscope, transmission electron microscopy, energy dispersive X-ray, vibrating sample magnetometer, dynamic light scattering, Brunauer, Emmett, Teller, and X-ray diffraction techniques. Batch system was followed to optimize the conditions for the removal of DMP. The adsorption experiments were carried out in terms of pH, contact time, various concentrations of DMP as well as nanocomposite, and temperature. The results showed that with increase in adsorbent dosage and contact time increased the adsorption efficiency. However, the efficiency decreased by increasing pH and initial DMP concentration. Experimental data were found to fit well with Langmuir isotherm (R2 > 0.981) in all the studied temperat...
Abstract: Background and Objectives: leachate from municipal solid waste landfill is a strong sew... more Abstract: Background and Objectives: leachate from municipal solid waste landfill is a strong sewage having hazardous toxic substances. It should be treated by choosing a simple, economical, and eco-friendly method. The aim of this study is reduction of COD from the Qom City landfill leachate using electrocoagulation process. Materials and Methods: The experimental study was carried out at bench scale using a batch reactor during 2010. We used a Plexiglas reactor having 0.7 liter capacity, containing nine plate aluminum ...
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