Department of Biotechnology (2008 - Present)
chemical Engineering
Chemical Engineering and Petroleium, Sharif University of Technology, Tehran,
Chemical Engineering - Food Industry
Chemical Engineering and Petroleium, Sharif University of Technology, Tehran,
Chemical Engineering
Chemical Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
Research field: Numerical and Computational Modelling and Simulation
Expert:
Phone: 82884301
Address:
Research field: Bioprocessing Activities
Expert:
Phone: 82883980
Address:
My name is Seyyed Mohammad Mousavi and I am from Yazd province. I obtained a Masters in Engineering from Sharif University of Technology, Iran in 2002. I was awarded a scholarship from Iranian Ministry of Science, Research and Technology and stayed on for a PhD in chemical engineering, which I completed in 2007 at Sharif University of Technology, Iran. In September 2008, I was awarded an assistant professorship at Tarbiat Modares University. I am currently working in Biotechnology Department as a full professor. I am authored or co-authored more than 240 publications with over 8638 citations and a Scholar h-index of 54.
The present study investigates the effects of particle size on chemical and structural features of polyethylene glycol (PEG)-assisted 1-butyl-3-methyl imidazolium chloride ([BMIM][Cl]) pretreatment of sugarcane bagasse (SCB) by response surface methodology approach (RSM). Three particle size ranges named fine, medium, and coarse separated by mesh numbers 70, 30, and 14 were considered for this study. Temperature, time, and PEG concentration in the ranges of 100–160 C, 60–120 min, and 1–5%(w/w), respectively, were chosen as the influencing parameters of the RSM. Percentage of glucan, xylan, and acid insoluble lignin (AIL) in the pretreated samples was evaluated as the responses. The optimization of the pretreatment process was conducte
Tuning the synthesis conditions of polyaniline (PANI) such as aniline monomer’s protonation states and adding surfactants into polymerization mixture or even the existence of bacterial cellulose (BC) had a substantial influence on the final properties. To explore the relationship between components presented in the polymerization mixture, simulation tools (molecular dynamics (MD)/Monte Carlo (MC)/Density functional theory (DFT)) can be used. Herein, nanocomposite aerogels of BC/PANI were fabricated in the presence of anionic surfactants; sodium dodecyl benzene sulfonate (SDBS) or sodium dodecyl sulfonate (SDS) at two different concentrations (0.05?M and 1?M) of HCl solution. Two types of aniline monomers were considered in the polymerizat
The high amount of base metals poses an important challenge in gold bioleaching from spent printed circuit boards (PCBs). The best objective in the current study is the bioleaching of important base metals (Cu, Ni, and Fe) from a mixture of spent PCBs (E-waste) using adapted Acidithiobacillus ferrooxidans in the bubble column bioreactors. The adaptation process firstly is done from 1- 15 g/L in Erlenmeyer flasks in 187 days, then the concentration of E-waste increased to 40 g/L in the bubble column bioreactors in 44 days. The concurrent recovery of copper, nickel, and iron using adapted bacterium in a bioreactor was optimized by central composite design. Various effective parameters such as aeration rate, initial ferrous sulfate concentrati
In this study, a lab-scale continuous packed-bed bioreactor with multi-sized distributed particles has been simulated in a structured layout using computational fluid dynamics. The goal was to achieve a well-estimated simple model which can describe the hydrodynamic regime of flow as well as mass transfer of species within the bioreactor. A MATLAB program was coded to create the packed-bed geometry by generating non-overlapping spherical particles. The flow hydrodynamics was assumed to be single-phase creeping flow regime (Stokes flow). The kinetic data of batch experiments at similar operating conditions were used to formulate the rate of anaerobic reactions. The anaerobic methanogenesis reactions were assumed to occur at the particle surf
The spent light emitting diode (LED) lamp is a new type of electronic waste contains the large amount of valuable metals. In this study, a novel green hybrid acidic-cyanide bioleaching process was developed for the high efficiency recovery of valuable metals from spent LED lamps. The spent LEDs were bio-pretreated using biogenic ferric produced by Acidithiobacillus ferrooxidans to efficiently harvest all base and heavy metals, 93% Sn, 94% Ni, 80% Cu, 68% Al, 60% Ga, 51% Pb, 46% Cr, and 35% Fe were leached. Then the bio-pretreated residue was bioleached by Bacillus megaterium (B. megaterium). Under optimum conditions (pH 7; glycine 2.5 g/L; L. methionine 10 g/L), 15 mg/L cyanide was produced by B. megaterium in short time of 14 h. At 10 g/L
The mobile phone is a fast-growing E-waste stream that includes hazardous substances and valuable metals. Smartphone touch screens (SPTS) contain a considerable amount of critical metals, such as indium and strontium that can be recovered from end of life devices as a secondary resource. Bioleaching is an emerging and environmentally friendly method for metal recovery from electronic waste. In the present study, bioleaching was assessed for the extraction of indium and strontium from organic light emitting diode type smartphone touch screens. A statistical approach based on the response surface methodology was successfully applied. The effects of influential variables: pH, ferrous sulfate, elemental sulfur, and solid content and their inter
Sulfur dioxide, a noxious air pollutant, can cause health and environmental effects, and its emissions should be controlled. Nonthermal plasma is one of the most effective technologies in this area. This study evaluated the efficiency of a packed-bed plasma reactor (PBR) and in-plasma catalysis (IPC) in SO 2 removal process which were finally optimized and modeled by the use of the central composite design (CCD) approach. In this study, SO 2 was diluted in zero air, and the NiCeMgAl catalyst was selected as the catalyst part of the IPC. The effect of three main factors and their interaction were studied. ANOVA results revealed that the best models for SO 2 removal efficiency and energy yielding were the reduced cubic models. According to th
Herein, polyaniline (PANI) with tuning morphology was in-situ synthesized within bacterial cellulose (BC)/silver nanoparticles hydrogels (AgNPs) that were prepared by green hydrothermal reduction method in different molarity of 0.01 and 0.25 of HCl solution along with the presence of polyethylene glycol (PEG). The synthesis of PANI in the presence of PEG in 0.01 M HCl led to the formation of rose-like morphology within nanocomposite aerogels with a size of 1.5–5.2 μm. All aerogels had the porosity and shrinkage of higher than 80% and lower than 10%, respectively. Rheology results showed a higher value of storage modulus (G′) than that of loss modulus (G″) for all samples over the whole frequency regime. It confirmed by the loss f
Using nanotechnology to increase the recovery of oil reservoirs can be a good way to meet energy demand, in order to increase oil production and reduce production costs. Biotechnology of nanoparticles using microorganisms as an environmentally friendly research field in nanotechnology around the world is a rapid development and is considered as a substitute for conventional and physical chemical methods. Optimizing processes can lead to morphology, control of the size and speed of nanoparticle synthesis reactions. Therefore, the purpose of this research is to build a reflection on the current status and future projects, and in particular the feasibility and limitations of the biotechnology approach proposed in the oil industry. In this rese
The non-thermal plasma (NTP) is a superior proposed method for nitric oxide removal because of operation at atmospheric pressure and ambient temperature. The energy consumption is the main challenge of using this technology. The packed plasma reactor with dielectric materials has been extensively investigated; it has higher energy efficiency. In this study, the energy efficiency and the other effectiveness factors in nitric oxide removal by NTP reactor packed with ceramic and glass beads optimized and modeled using Response Surface Methodology. The findings showed the maximum energy efficiency was 132.69g/J in the optimal conditions of initial concentration, gas flowrate, and duty cycle (voltage) equal to 1050 ppm, 2.5 L/min, and 9%(22KV),
With the constant accumulation of electronic waste, extracting precious metals contained therein is becoming a major challenge for sustainable development. Bacillus megaterium is currently one of the microbes used for the production of cyanide, which is the main leaching agent for gold recovery. The present study aimed to propose a strategy for metabolic engineering of B. megaterium to overproduce cyanide, and thus ameliorate the bioleaching process. For this, we employed constraint-based modeling, running in silico simulations on iJA1121, the genome-scale metabolic model of B. megaterium DSM319. Flux balance analysis (FBA) was initially used to identify amino acids to be added to the culture medium. Considering cyanide as the desired produ
The discharge of toxic elements from tailings soils in the aquatic environments occurs chiefly in the presence of indigenous bacteria. The biotic components may interact in the opposite direction, leading to the formation of a passivation layer, which can inhibit the solubility of the elements. In this work, the influence of jarosite on the bio-immobilization of toxic elements was studied by native bacteria. In batch experiments, the bio-immobilization of heavy metals by an inhibitory layer was examined in the different aquatic media using pure cultures of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans. A variety of analyses also investigated the mechanisms of metals bio-immobilization. Among different tests, the highest m
Environmentally appropriate economic recycling of spent automotive catalytic converters (SACCs) is difficult due to their complexity. The prominent reason is the lack of knowledge and comprehensive characterization of SACCs. This study focused on the characterization of SACCs in terms of their structural, morphological, physiochemical, surface, and thermal properties. The accurate determination of metals content, including 4975 mg/kg platinum group metals, 42119 mg/kg rare earth elements, and other base metals, showed a great potential wealth in SACCs. Besides, the sequential extraction method was applied for metals fractionation, which represents a unique harsh recycling approach needed due to the stable structure of SACCs, metals embe
Electroplating sludge is classified by environmental agencies as a hazardous waste, the disposal of which can be a serious environmental concern. In the present study, the recovery of Ni and Cr from chromium-rich electroplating sludge was conducted using the filtrated culture of Aspergillus niger for the first time. Pulp density, leaching temperature, and leaching duration were identified as variables affecting the recovery optimization. Leaching temperature of 66 ?C, leaching duration of 1 day, and pulp density of 10 g/L were found as the optimal conditions. Under optimum conditions, Cr and Ni recoveries were 53% and 95.7%, respectively. Toxicity Characteristic Leaching Procedure and Synthetic Precipitation Leaching Procedure tests sho
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