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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...
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 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...
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...
Adsorption of methylene blue (MB) by NaOH-treated rambutan peel (N-RP) was examined. The adsorption experiments were carried out under different conditions of initial concentration (25–500 mg/L), solution pH 2–12 and N-RP dose (0.05–1.0 g). The influence of these parameters on the adsorption capacity was studied using the batch process. MB adsorption uptake was found to increase with increase in initial...
Abstract-the article intends to introduce the authors' experimental study on adsorption behaviour of chitosan solution on silica by reflectometry. Effect of pH on adsorption of Chitosan and interaction with non-ionic surfactant on silica has been studied. The adsorbed amount Γ was 0.80, 0.35 mg·m-2 at pH6.8 and 6.0, respectively. Zeta potential measurements have been measured in the experiment. Exchanges...
The sludge carbon made from sewage sludge with ZnCl2 are used for gatifloxacin adsorption. Characterizing sludge carbon and researching mechanism of gatifloxacin adsorption on different adsorbents. The results showed: sludge carbon have large surface area and mid-hole structure. The adsorption keep to second kinetics model, that means chemical adsorption is the main progress. The research proves sludge...
Superfill (bottom-up) phenomena relevant for Damascene processing typically rely on the time-dependent interplay of various organic and inorganic additives with both the metallic copper surface and with cuprous ions as intermediates of the copper electro-reduction in the near-surface regime. In-situ STM, in-situ SXRD (Surface X-Ray Diffraction) measurements combined with DFT calculations provide new...
The properties of potassium zinc hexacyanoferrate absorbing cesium were studied in this paper including particle size distribution, isotherm, kinetics and the mechanism of the adsorption. The results showed that Freundlich isotherm and pseudo-second order model were better to describe the adsorption behavior of potassium zinc hexacyanoferrate adsorbing cesium. The lab-scale test further indicated...
In view of the problem that the high concentration of nitrogen and phosphate remained in secondary effluent, adsorption processes were attempted to remove nitrogen and phosphate. In this paper, nature zeolite was modified and compounded as a matrix material. After treating in these methods, the properties of zeolite had been greatly improved and the goal of nitrogen and phosphate synchronous removal...
The adsorption and desorption properties of beta-cyclodextrin polymer (beta-CDP) for 4-cresol were investigated. Studies concerning the effects of pH, contact time and initial 4-cresol concentration were presented and discussed. Results of batch experiments showed that this adsorbent exhibited some sorption capacities toward 4-cresol. It was found that kinetics followed a Ho and McKay equation and...
Iron-oxide-coated sand (IOCS) filter media was investigated to remove phosphate from aqueous solutions in batch experiments. Adsorbability of phosphate by IOCS-1 and IOCS-2 (prepared by different coating process) was compared in order to gain an available coating process to prepare modified sand filter media for effective removal of phosphate. Scanning electron microscopy (SEM) and X-ray diffraction...
Arundo donax root was used to prepare activated carbon by H3PO4 activation for the removal of methyl violet (MV). The activated carbon has a micro-mesoporous structure with BET surface area 1392 m2/g. Pseudo-second-order model could predict the adsorption kinetics for the entire process. The sorption involved several stages and the actual rate controlling step was film diffusion for the whole process...
As shown by quartz-crystal microbalance measurements, in the potential range from 0.0 to 0.55 V (NHE) sulfide ions adsorbed on the gold electrode surface accelerate the electrode reaction of anodic dissolution of gold in acidic thiocarbamide solutions. The microbalance determination of kinetic parameters at a constant electrode surface coverage with sulfide ions includes a special procedure developed...
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