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For ultrasonic molecular imaging, evaluation for molecular expression has been discussed for decades. However, there is no method to quantify the precious expression level of molecules using ultrasonography. To solve this problem, it is important to understand the chemical kinetics between targeted microbubbles (TMBs) and target molecules as a fundamental study. Therefore, we construct the system...
In this paper we describe the development of a novel molecularly imprinted sensor (MIS) for detection of isoborneol (ISO) in aqueous solutions. The MIS device consisted of an interdigitated microelectrode coated with a multilayered thin film of TiO2 nanoparticles and sodium sulfonated polystyrene (np-TiO2/PSS) assembled via electrostatic layer-by-layer. Isoborneol was previously imprinted within np-TiO...
Sulfur hexafluoride (SF6) plasmas are commonly used in the deep etching of silicon (Si), silicon oxide (SiO2) and more recently silica glass [1]. Due to the complexity of fluorinated plasma environment during Si-based material etching, there are few works presenting experimental and/or theoretical studies about the chemistry established. However, the chemical behavior of the plasma has a direct influence...
The present study predicts the feasibility for the adsorptive removal of Victoria Blue dye (VB dye) from aqueous solution using a low cost biosorbent Zizyphus Oenoplia seed (ZOS). In this study, a batch mode adsorption experiments were carried out using various parameters such as pH, contact time, concentration of dye, adsorbent dosage and temperature. The feasibility of the process is evaluated with...
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...
This paper reported a novel e-nose type gas sensor based on film bulk acoustic resonator (FBAR) array in which each sensor is functionalized individually by different organic monolayers. Such hybrid sensors have been successfully demonstrated for VOCs selective detections. Two concentration-independent fingerprints (adsorption energy constant and desorption rate) were obtained from the adsorption...
In this work we study equilibrium and kinetic adsorption process of Methylene Blue (MB) and Copper phthalocyanine (CuPhTh) dyes on TiO2 thin films. We synthesized phthalocyanines through Achar method; dyes were characterized by Fourier-Transform Infrared spectroscopy (FTIR) and Diffuse reflectance. TiO2 thin films were fabricated by Doctor Blade method for using Degussa P25 as TiO2 source. We used...
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...
Since heavy metal pollution is a significant aspect to aquatic ecosystems, the objective of this research work was to investigate adsorption characteristics of chitosan as an alternative adsorbent material. In this study, chitosan, synthesized from locally available shrimp type “penaeus monodon” was used to observe adsorption characteristics of cadmium (Cd) and lead (Pb) heavy metals from aqueous...
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...
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...
This work is dedicated to modeling of adsorption processes in plasmonic sensors. We give a generalization of the Lagergren first order reaction kinetic model to the situations where adsorption takes place in multianalyte environment and every analyte obeys one of the following two rules: either it has a small equilibrium constant or its initial number of particles greatly exceeds the number of corresponding...
The present study is concerned by the exploration of the capability of natural and synthetic adsorbents to retain methyl orange dye. The effect of key operating parameters such as contact time, adsorbent dosage, initial pH and initial dye concentration on retention capacity, were investigated for these adsorbents. Various isotherm models like Langmuir and Freundlich were tested for the adsorption...
The present work is aimed at exploring carbon which was prepared by calcination of Cereal By-Product (CBP) and used as adsorbent for the removal of Chromium (VI) from a surface treating industry. The effect of various parameters such as adsorbent dosage, particle size, pH, contact time and stirring speed was studied. As the adsorption process is pH dependent, it showed maximum removal efficiency of...
Following the success of conventional macro-scale wireless sensor networks, researchers are now investigating the viability of nano-scale sensor networks (NSNs), which are formed by establishing communication between devices made from nanomaterials. Due to unique properties of nanomaterials, it is envisaged that such NSNs can support completely new types of applications beyond what could be achieved...
The adsorption performance of rice husk carbon-clinoptilolite (RHC-clinop) for the removal of Direct Blue 71 (DB71) in batch mode was investigated. The RHC-clinop was prepared by pre-determined mixes of clinoptilolite (clinop), rice husk carbon (RHC), and ordinary Portland cement (OPC). The OPC was used as binding agent. The adsorption experiments were conducted at different conditions of adsorbent...
The adsorption of two reactive dyes, Orange 16 (RO16) and a Reactive Red 120 (RR120) by Mg/Al-NO3 layered double hydroxide in single and binary mixture (1:1 ratio) was conducted in a batch mode. Spectrophotometric method using first order derivative and zero crossing was applied to analyse colour removal of RO16 and RR120 dyes from solutions. The effects of contact time in single and binary systems...
Biosorption can be used as a cost effective and efficient technique for the removal of toxic heavy metal from wastewater. Waste material from industries such as food processing and agriculture may act as potential biosorbent. This paper highlighted the potential used of local fruit waste as biosorbent for heavy metal removal in wastewater. According to Malaysian regulation, the discharge of the effluents...
Adsorption of Remazol Brilliant Blue R (RBBR) by rambutan peel (RP) was examined. The adsorption experiments were carried out under different conditions of initial concentration (25–500 mg/L), solution pH 2–12 and RP dose (0.05–1.2 g). The influence of these parameters on the adsorption capacity was studied using the batch process. RBBR adsorption uptake was found to increase with increase in initial...
Carbonized mulch (CM) was used to remove copper (Cu), zinc (Zn) and cadmium (Cd) in solutions and urban road runoff in this study. Parameters investigated included pH, sorbent amount and reaction time. The removal of all three metals by CM was determined by pH and the peak at pH 5.5. The adsorption kinetics of all three metals by CM could meet the pseudo-first-order equation. The adsorption isotherms...
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