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  • دکتری (1377)

    میکروب شناسی

    دانشگاه تربیت مدرس،

  • کارشناسی‌ارشد (1373)

    باکتری شناسی

    دانشگاه تربیت مدرس،

  • حذف آلاینده ها از آب و فاضلاب
  • روش های حذف عوامل میکروبی از محیط

    داده ای یافت نشد

    Microstructural evolution and superplastic behavior of a fine-grained Mg− Gd− Y− Ag alloy processed by simple shear extrusion

    A Rezaei, R Mahmudi, C Cayron, R Loge
    Journal PapersMaterials Science and Engineering: A , Volume 806 , 2021 March 4, {Pages 140803 }

    Abstract

    Two magnesium alloys with the nominal compositions of Mg−6Gd−3Y (GW63) and Mg−6Gd−3Y−1Ag (GW63−1Ag) were hot extruded and then processed by 6 passes of the simple shear extrusion (SSE) process at 553?K. Both SEM and EBSD studies confirmed the mean grain size reduction of the extruded base GW63 alloy from 10.1 to 2.9?μm by adding 1?wt% Ag. This decrease in the grain size was due to the formation of the Ag-containing precipitates with network-type morphology at the grain boundaries of the extruded GW63−1Ag alloy. Further grain refinement was achieved after SSE through the occurrence of DRX in both Ag-free and Ag-containing alloys. However, the GW63−1Ag alloy showed a higher fraction of DRX grains and HAGBs after SSE processin

    Removal of aspirin from aqueous solution using electroactive bacteria induced by alternating current

    Zohreh Moghiseh, Abbas Rezaee
    Journal PapersEnvironmental Science and Pollution Research , 2021 January 16, {Pages 12-Jan }

    Abstract

    This study aims to improve bacterial laccase enzyme activity (LEA) and dehydrogenase activity (DHA) affecting acetylsalicylic acid (ASA) biodegradation using an alternating current (AC). A microbial consortium was inoculated in an electroactive bioreactor supplied with an AC by a function generator under operating conditions of amplitude (AMPL)= 2–10 peak-to-peak voltage (V pp), optical fiber splice tray (OFST)= 0.1 V, and sine wave frequency= 10 Hz. The obtained results revealed that at an applied voltage of 8 V pp and an OFST of 0.1 for 12 h, the maximum bacterial LEA and DHA were 30.6 U/mL and 75.5 micro grTF/cm 2. gr biomass; respectively. Cell viability and permeability were equal to 95.7% and 0.3%; respectively, at the voltage of 8

    The influence of combined low-strength ultrasonics and micro-aerobic pretreatment process on methane generation and sludge digestion: Lipase enzyme, microbial activation, and?…

    Reza Barati Rashvanlou, Mahdi Farzadkia, Abbas Rezaee, Mitra Gholami, Majid Kermani, Hasan Pasalari
    Journal PapersUltrasonics Sonochemistry , 2021 March 22, {Pages 105531 }

    Abstract

    Low-frequency ultrasonics is a potential technology to reduce the hydrolysis phase period in anaerobic digestion process. In this study, the?influence of combined low frequency ultrasonics and micro-aerobic (MA) pretreatment on sewage sludge solubilization, enzyme activity and anaerobic digestion were assessed. Initially, the effect of ultrasonic density (0.012, 0.014, 0.016, 0.018, 0.1, 0.12 and 0.14 W/mL) and irradiation time (1,3,5,8,9,10 and 12 min) of 20 kHz frequency waves were investigated. Accordingly, the effect of micro-aerobic pretreatment (Air flow rate (AFR) =0.1,0.2, 0.3 and 0.5 VVM) within 20, 30, 40.48 and 60 h were examined. In addition, the effect of combined pretreatment on COD solubilization, lipase enzyme activation, AT

    Anaerobic Treatment of Oily Wastewater Using A Biofilm-Electrode Reactor: A Kinetic Study And Energy Consumption

    Amir Mirshafiee, Abbas Rezaee
    Journal Papers , 2021 May 5, {Pages }

    Abstract

    The present study introduced a laboratory-scale, anaerobic treatment system for the removal of oil 11 from synthetic wastewr using a biofilm-electrode reactor (BER). The operating parameters of 12 current intensity, initial concentration, reaction time, and supporting electrolyte were investigated. 13 The results of the present study showed that the optimal conditions were: a current intensity of 15 14 mA, COD concentration of 1500 mg/L, a reaction time of three days, and a supporting electrolyte 15 (NaCl) of 150 mg/L. The highest efficiency for the removal of COD was 86.7% using the 16 introduced method, while it was 65.9% using biological processes. Increased efficiency was 17 attributed to the employment of the proposed bioelectrochemica

    Electrochemical oxidation pretreatment for enhanced methane potential from landfill leachate in anaerobic co-digestion process: Performance, Gompertz model, and energy assessment

    Hasan Pasalari, Ali Esrafili, Abbas Rezaee, Mitra Gholami, Mahdi Farzadkia
    Journal PapersChemical Engineering Journal , 2021 April 27, {Pages 130046 }

    Abstract

    Landfill leachate (LL) are well known with low biodegradability and bio-methane potential (BMP) due to recalcitrant compounds and limited potential microorganisms. In turn, pretreatment step and addition co-substrate seem mandatory to improve the biodegradation and enhance the energy output. The present study was developed to assess the electrochemical oxidation (EO) and electrochemical conversion in low current density to improve LL bioavailability in anaerobic co-digestion (LL + Sludge) process. The enhanced biodegradability index: soluble COD (sCOD) and total volatile fatty acid (TVFA) of LL using EO pretreatment process were optimized under operational parameters: current density (10–40 mA/cm2), electrode gap (0.5–2 cm), and

    Bioelectrochemical system for anaerobic oily wastewater treatment: Biokinetic & energy consumption studies

    A Mirshafiee, A Rezaee
    Journal Papers , , {Pages }

    Abstract

    Effective removal of hexavalent chromium using microbial cellulose/polyaniline cathode and nanosized FeS2 in the form of an integrated electrochemical system

    E Aseman-Bashiz, A Rezaee, G Moussavi
    Journal Papers , , {Pages }

    Abstract

    Application of disc screen for wastepaper recycling: evaluation of influential parameters

    A Rezaee, G Moussavi, A Feil, R Norouzzadeh, M Moradi, K Azami, ...
    Journal Papers , , {Pages }

    Abstract

    Bio-Electroreduction of Chromium (VI) using Immobilized Sulfate Reducing Bacteria on Conductive Microbial Cellulose Biocathode

    M Loloei, A Rezaee, G Ghods
    Journal Papers , , {Pages }

    Abstract

    Enhanced electrocatalytic denitrification using non-noble Ni-Fe electrode supplied by Fe3O4 nanoparticle and humic acid

    ZA Jonoush, A Rezaee, A Ghaffarinejad
    Journal Papers , , {Pages }

    Abstract

    The influence of combined low-strength ultrasonics and micro-aerobic pretreatment process on methane generation and sludge digestion: Lipase enzyme, microbial activation, and …

    RB Rashvanlou, M Farzadkia, A Rezaee, M Gholami, M Kermani, ...
    Journal Papers , , {Pages }

    Abstract

    Superplastic behavior of a severely deformed Mg–6Gd− 3Y− 0.5 Ag alloy

    A Rezaei, R Mahmudi, C Cayron, RE Loge
    Journal Papers , , {Pages }

    Abstract

    Study of kinetic models of olive oil mill wastewater treatment using electrocoagulation process

    M Ghahrchi, A Rezaee, A Adibzadeh
    Journal Papers , , {Pages }

    Abstract

    Electrocatalytic nitrate reduction using Fe0/Fe3O4 nanoparticles immobilized on nickel foam: Selectivity and energy consumption studies

    Zohreh Akbari Jonoush, Abbas Rezaee, Ali Ghaffarinejad
    Journal PapersJournal of Cleaner Production , Volume 242 , 2020 January 1, {Pages 118569 }

    Abstract

    The main objective of this study is to offer an effective electrocatalytic system with high selectivity to nitrogen and low energy consumption using Ni–Fe0@Fe3O4 nanocomposite. The Ni–Fe0@Fe3O4 nanocomposite electrode for electrocatalytic denitrification prepared via an electrodeposition method. Factors effective on nitrate electrocatalytic reduction such as current efficiency, nitrate removal, nitrite and ammonia generation, nitrogen selectivity, and energy consumption were studied using the Ni–Fe0@Fe3O4 nanocomposite electrode. The Ni–Fe0@Fe3O4 nanocomposite was characterized by BET, FE-SEM, EDX, and XRD techniques. The proposed electrocatalytic system reached 90.19% nitrate removal efficiency using 5 mA/cm2 current density with

    Minimization of hazardous sludge production using a bioelectrochemical system supplied by an alternating current electric field

    Zohreh Moghiseh, Abbas Rezaee, Somayyeh Dehghani
    Journal PapersBioelectrochemistry , Volume 132 , 2020 April 1, {Pages 107446 }

    Abstract

    In the present study, minimization of hazardous bio-sludge production was investigated using a bioelectrochemical system supplied by an alternating current electric field and supplemented with phenol as a cabon source. The experiments were conducted in an air-conditioned bioreactor and at neutral pH value. Moreover, steel wool and carbon cloth were utilized as electrodes in the bioelectrochemical system. The experiments were operated in an air-conditioned bioreactor at 25 ℃ and a neutral pH value with carbon to nitrogen (C/N) ratio of 0.5–6. The results obtained?showed that complete phenol electro-biodegradation occurred at a C/N ratio of?a frequency of 5?Hz, and 0.4 peak-to-peak voltage (Vpp) over 2?h.?Besides, sludge production and sl

    Effects of Low Frequency-Low Voltage Alternating Electric Current on Apoptosis Progression in Bioelectrical Reactor Biofilm

    Edris Hoseinzadeh, Chiang Wei, Mahdi Farzadkia, Abbas Rezaee
    Journal PapersFrontiers in Bioengineering and Biotechnology , Volume 8 , 2020 January 22, {Pages 2 }

    Abstract

    Bioelectrochemical systems (BESs) have undergone several modifications to promote enzymes or pathways used to reduce the energy required for microbial metabolism. When an electric current is applied intermittently, changes in dominant bacteria species, population, and growth rates take place. Applying electricity to bioelectrical reactor biofilms can stimulate cells or lead to cell death, and therefore, determination of the applied voltage range that leads to viable and stimulated bacteria is crucial. We investigated apoptosis progression induced by low frequency-low voltage alternating electric current (AC) in a bioelectrical reactor biofilm using indices discussed here. Our results showed that pHzpc for biofilms on the carbon cloth (CC) a

    Electro-catalytic ozonation for improving the biodegradability of mature landfill leachate

    Mina Ghahrchi, Abbas Rezaee
    Journal PapersJournal of environmental management , Volume 254 , 2020 January 15, {Pages 109811 }

    Abstract

    Landfill leachate contains complex, resistant, and diverse compounds that are considered as an environmental health problem. This study aims to investigate the efficacy of integrated homogeneous catalytic ozonation and electrochemical process for improving the biodegradability of landfill. This experimental study was conducted on real landfill leachate on the laboratory scale. The variables were current density (O3/H2O2-42.1 mA/cm2), ozone concentrations (100–400 mg/h), the initial pH (3–9), and the reaction times (1–6 h). The optimum operating condition was obtained at 1.42 mA/m2, 400 mg/h of ozone concentration, initial pH of 3, during 3 h. In the proposed integrated catalytic ozonation-electrochemical process, the chemi

    Improving the performance of Cr (VI) removal by electrochemical process using microbial cellulose/magnetic nanoparticles electrode

    Neda Seyedi Marghaki, Zohreh Akbari Jonoush, Abbas Rezaee
    Journal PapersJournal of Cleaner Production , Volume 277 , 2020 December 20, {Pages 123195 }

    Abstract

    This study aimed to improve the performance of the electrochemical (EC) process for hexavalent chromium [Cr (VI)] removal using a metallic polymer anode. In fact, this anode had been prepared via the immobilized Fe3O4 as the magnetic nanoparticles on microbial cellulose (MC). Moreover, MC/Fe3O4 was modified and conducted by polypyrrole (PPy) and a sandwich panel of stainless steel. The conductive MC/Fe3O4 electrode was characterized by XRD, TGA, FE-SEM, and FTIR. In EC process of the Cr (VI) removal using the composite anode, factors such as chromium concentration, pH value, current density, energy consumption, as well as sludge production were also taken into account. The proposed EC reached 99.87% Cr (VI) removal efficiency using the curr

    Biological denitrification using microbial electrochemical technology: a perspective of materials, the arrangement of electrodes and energy consumption

    Somayyeh Dehghani, Abbas Rezaee
    Journal PapersDESALINATION AND WATER TREATMENT , Volume 178 , 2020 February 1, {Pages 155-162 }

    Abstract

    This research aimed to study the performance of electroactive denitrifying bacteria on biological nitrate reduction using carbon cloth plate and cylindrical stainless steel mesh electrodes in a microbial electrochemical system (MES). The carbon to nitrogen (C/N) ratio, energy consumption, microbial population, nitrate coulomb-reduction rate, and hydrogen production were considered during the experiments. The optimum condition for nitrate removal was obtained at C/N= 2, applied current= 2 mA, and reaction time= 6 h. Nitrate coulomb-reduction rate and hydrogen gas generation were 3.33 mg C–1 and 2.2? 10–4 moles, respectively. The consumption of electricity and power were computed 0.0104–0.096 kWh m–3 and 9.9? 10–5, respectively. The

    Effect of Ag Addition on the Hot Deformation, Constitutive Equations and Processing Maps of a Hot Extruded Mg-Gd-Y Alloy

    A Rezaei, R Mahmudi, R Loge
    Journal PapersMetallurgical and Materials Transactions A , Volume 51 , Issue 10, 2020 October , {Pages 5139-5153 }

    Abstract

    Hot deformation behavior of the extruded Mg-6Gd-3Y (GW63) and Mg-6Gd-3Y-1Ag (GW63-1Ag) alloys was assessed by shear punch testing (SPT) method in the temperature range of 623 K to 723 K and shear strain rate of 1.6? 10− 2 to 1.3? 10− 1 s− 1. Microstructural examinations showed that Ag addition decreased the initial grain size from 10.1 to 2.9 ?m. According to the hot deformation results, hyperbolic-sine exponents (n-values) of 3.39 and 2.54 were obtained for the Ag-free and Ag-containing alloys, respectively. The corresponding activation energies were found to be 321 and 178 kJ mol− 1 for these alloys. Therefore, the controlling deformation mechanisms were defined as viscous glide of dislocation for the Mg-6Gd-3Y alloy and grain bou

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    دروس نیمسال جاری

    • دكتري
      پروژه ( واحد)
      دانشکده علوم پزشکی، گروه بهداشت محيط
    • دكتري
      ميكروبيولوژي پيشرفته محيط ( واحد)
    • كارشناسي ارشد
      مديريت فاضلاب هاي صنعتي ( واحد)

    دروس نیمسال قبل

    • كارشناسي ارشد
      سيستم هاي طبيعي تصفيه فاضلاب ( واحد)
      دانشکده علوم پزشکی، گروه بهداشت محيط
    • دكتري
      شناخت و كنترل آلودگيهاي خاك ( واحد)
    • 1400
      ميرزابيگي, ياسمن
      احياء كروم از محلول هاي آبي با استفاده از سيستم الكتروشيميائي با جريان متناوب واجد نانوالياف سلولز ميكروبي/ نانوذرات مگنتيت
    • 1397
      عليزاده خورجستان, زهرا
      حذف تتراسيكلين از محيطهاي مائي با استفاده از فرآيند الكتروشيميائي سه بعدي واجد سلولز ميكروبي باردار شده و پرسولفات فعال شده با نانو ذرات آهن
    • 1399
      صفدري, مهدي
    • 1399
      ميرعالي, سمانه
    • 1400
      احمدي, شبنم
    • مدیر گروه بهداشت محیط
    • دفتر امور هیات علمی
    • عضو هیات ویژه بازرسی
    • عضو کمیته ایمنی دانشکده پزشکی
    • عضو شورای ایمنی و محیط زیست دانشگاه
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