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Molecular Communication (MC) is a new multidisciplinary subject concerning medicine, biology, and communication engineering. MC concept is introduced for modeling of communication of nano/micro scale devices. In MC systems, chemical signals carrying information in gaseous or liquid media are used. Similar to other communication systems, in MC sending information from transmitter to receiver with minimum...
In order to study the (√3×√3) R30°(abbr.√3) and (3×3) reconstruction structures on 6H-SiC (0001) -Si terminal after S atoms adsorption, the first-principles calculations were performed to investigate the properties of surface adsorption energy, bond lengths, bond angles, density of states, and bond population. The results show that S atoms can open the reconstruction bonds on 6H-SiC surfaces. TOP...
The main aim of this work was to explore the potential application of orange peel waste as biosorbents for removing methylene blue (MB) in aqueous solution. We will investigate the effects of different adsorption parameters such as the initial concentration of MB, adsorption time; adsorbent dosage, adsorption temperature and initial pH on MB adsorption. It was found that the adsorption capacity was...
In this paper, we report the fabrication and experiment results of carbon nanotube (CNT) based micropreconcentrator. In our micropreconcentrator, the CNT are applied as the adsorption structures to trap and detect trace level volatile organic compounds (VOC) gas for human breath analysis. Our CNT based micropreconcentrator is designed and its performance is investigated quantitatively by simulation...
Studies of the interactions between biological molecules are of highest importance in a vast number of areas of biomedicine and biotechnology. Today there are several different methods used for affinity studies such as surface film resonance, mass spectroscopy, ultracentrifugation, chromatography and electrophoresis and so on. Our approach utilizes GMR microfluidic biosensor, an emerging idea tool...
This paper explores the potential of French green beans (Phaseolus Vulgaris) and Lotus Stem (Nelumbo Nucifera) as potential low-cost adsorbents for the removal of Methylene Blue from wastewater. The studies were conducted with variation in parameters of pH, biomass concentration, contact time and initial dye concentration. The nature of the possible adsorbent and metal ion interactions was examined...
Biobutanol is considered to be a promising choice for renewable fuel due to its high energy content, low volatility, and low water solubility. However, the production of biobutanol through fermentation is complicated by the fact that butanol inhibits the microorganism's cell growth and therefore the butanol production when its concentration in the fermentation broth reaches a certain critical level...
This study provides a theoretical basis for use of Auricularia polytricha hyphae as an adsorbent for removal of heavy metal cadmium from aqueous solution. Adsorption effect was studied from suitable pH, application dosage, biosorption time and the initial concentration of cadmium. Little biosorption of metalions was observed for pH < 3.0. The cadmium removal capacity increased very sharply with...
Through the research on the adsorption of heavy metal ions in electronic industrial wastewater and the thermodynamics by activated carbon, influences of contact time, temperature, pH value and coexistence heavy metal ions on Cu2+, Pb2+, Zn2+ and Cr6+ adsorption were investigated in terms of experiments. The results showed that the copper adsorption onto activated carbon achieved equilibrium gradually...
Adsorption of anionic azo dye methyl orange (MO) on chitosan/kaolin/ γ-Fe2O3 nanocomposite from aqueous solutions was investigated in a batch system with respect to adsorbent dosage and initial pH. The pseudo-first-order, pseudo-secondorder kinetic models and intra-particle diffusion model were used to evaluate the kinetic data and the rate diffusion model constants were calculated. Results of the...
The properties of adsorption of shikimic acid by activated carbons were investigated in batch experiments. The adsorption of shikimic acid was strongly influenced by temperature. The Freundlich and Langmuir models were used to fit experimental data. The results of regression showed that the Freundlich equation was more suitable. Some thermodynamic parameters were calculated. The changes in enthalpy...
The biosorption of reactive red on acid-treated Penicilium sp. was investigated in a packed-bed column. The column experiments were conducted to study the effect of operating parameters such as initial dye concentration, adsorbent dose and flow rate on the column removal capacity. The Thomas model was used to analyze the experimental data. Column experiments showed that the fungal mycelia mixed with...
The ability of Mg-Fe layered double hydroxide to remove C. I. Reactive Red 2 from aqueous solution was investigated. The influence of molar ratio of Mg-Fe, solution pH, contact time and initial dye concentration on adsorption capacity of C. I. Reactive Red 2 was studied. Batch isotherm studies were carried out on a laboratory scale to evaluate the adsorption capacity of Mg-Fe layered double hydroxide...
The removal of reactive red 2 and methylene blue from aqueous solution was studied using soybean meal as an adsorbent. The effects of some parameters such as solution pH and contact time on the adsorption were investigated. The equilibrium time was found to be more than 60 min for equilibration. Equilibrium data conformed to the Freundlich, Langmuir and Redlich-Peterson isotherm models, where the...
Batch experiments were carried out to determine the capacity of Pseudomonas fluorescens biomass to adsorb Sr(II) ions from aqueous solution with respect to pH, initial Sr(II) concentration, contact time and biomass dose. The FTIR results of Pseudomonas fluorescens biomass showed that biomass has different functional groups and these functional groups are able to react with metal ion in aqueous solution...
The present study was undertaken to evaluate the feasibility of Pseudomonas alcaligenes biomass for the removal of strontium ions from aqueous solutions. Batch experiments were performed to study the adsorption of strontium on pH, Pseudomonas alcaligenes biomass adsorbent with respect to initial Sr(II) concentration, contact time and biomass dose. The experimental data were modeled by Langmuir and...
In the present study we reported the feasibility of extra cellular biopolymer( PFC02) produced by Pseudomonas alcaligenes as an alternative biosorbent to remove Co(II) metallic ions from environmental and industrial wastewater. The effects such as pH, dosage of biosorbent, Co(II) initial concentration and sorbate-sorbent contact time and agitating speed on the adsorption capacities of PFC02 were studied...
The process kinetic model of flue gas desulfuration and denitrification simultaneously from flue gas by liquid catalyzed oxidation-microbiological method was studied in this article. The findings suggest that "Adsorption-biofilm" theory and the dynamic model established by the data from liquid catalyzed oxidation-biological method could accurate describe the process of purifying SO2 and...
We have applied extensive ab initio density functional theory coupled with non-equilibrium Green's function (DFT/NEGF) and molecular dynamics simulations to study the details of physical interactions between carbon nanotubes and amino acids in order to understand the underlying mechanisms that contribute to changes in electronic transport of carbon nanotubes in a two-terminal configuration. It was...
This paper has researched on the adsorption of Cr(VI) in water using peanut shell. The dependence on pH and Cr(VI) concentration of the adsorption was studied. Batch experiments results showed that the adsorptive capacity of peanut shell was 13.39 mg/g of adsorbent. The Langmuir and Freundlich models were used to describe the adsorption equilibrium of Cr(VI) on peanut shell and the adsorption followed...
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