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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, the removal of aflatoxins B2 from water is studied and a new adsorbent Cu/PTMAB-MMT is prepared. The change of the microscopic structure of the absorbent before and after adsorption reaction is analyzed by TEM, XRD and EPR. The effect of temperature and PH on the adsorption are studied and also the best temperature and PH are determined.
The stable adsorption complex is synthesized by Zn(II) and a inclusion complex of β-cyclodextrin resin and 8-hydroxyquinoline with epichlorohydrin as crosslinking agent. The adsorption complex was used as an adsorbent to study its adsorption performance on trace Zn(II) in water by atomic absorption spectrophotometry. The experiment researched adsorption and elution conditions and enrichment factor,...
In this paper, the adsorption effect of CO2 at 5 different MDEA-TETA mix ratios, and the optimum ratio is MDEA: TETA=1∶9. More study was done on the absorption kinetics under the optimum ratio to draw the reaction order and the average activation energy. The results are as follows: the activation order n=1.22, the reaction rate constant K'=0.28.
The adsorption equilibrium and Kinetic modelling of pigment extracted from Fenugreek after degumming on macroporous resins LS-46 was investigated under differentinitial concentrations. The suitability of the Freundlich and Langmuir adsorption models to the equilibrium data was investigated. The model fitness was determined by R2. Kinetic analyses were conducted using pseudo firstand second-order models...
The adsorption behavior of modified polyamide resin for resorcinol was studied with the static method .The static adsorption test results showed that the optimum medium was pH =6, temperature was 25°C, and the oscillation time was 60 minutes. The adsorbed quantity was at 8.715mg/g,the rate of adsorption was 85% and the removal rate was the best. Adsorption isotherm was well in line with the Freundich...
The purpose of this study is to evaluate the adsorption potentialities of humate substances in natural environments. Humic acid and insolubilized humic acid are selected as prototypes. This paper presents the development of a new remediation technology for contaminated sandy soil using humic acid (HA). The results indicated a significant increase of the adsorption of Cr (VI) because the complexion...
Parameters affecting antibody conjugation with immunomagnetic beads (IMB) are investigated when Goat antiMouse IgG/HRP is used as a model antibody. Results found that antibody could be conjugated on the surface of magnetic beads (MB) by physiochemical adsorption and covalent bonds. The polystyrene/acrylamide magnetic beads (amino-MB) could bind more antibodies than polystyrene/acrylic acid magnetic...
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...
This paper reports the high biosorptive properties of an indigenous plant for Cr(VI) biosorption. The biomass uptake capacity is found 85 mg Cr(VI)/gm of biomass in batch mode. The influence of different experimental parameters such as pH, dose of adsorbent and Cr(VI) levels (15-200 mg/l), effect of contact time etc. on biosorption was evaluated. The adsorption data fitted well to Langmuir and Freundlich...
The paper studied an approach to purification of CS2 waste gas in low concentration using biological trickling filter. The results of preliminary experiment showed that, when the gas flow was 100-500mg/m3, the CS2 removal efficiency arrives percent 70-78% by using trickling filter, But the biological elimination of CS2 in waste gas could be increased from 2.06mg/(L h) to 22.52mg/(L h); meanwhile the...
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...
Adsorption properties of Fe(II) and Mn(II) by palygorskite were investigated using a batch adsorption, and the effects of contact time, roasting temperature and acid concentration for activation on adsorption removal of Fe(II) and Mn(II) were studied. Results showed that the adsorption sites of palygorskite were well exposed to both kinds of metal ions, and the equilibrium adsorption was reached within...
The modified mesoporous silica with aminopropyl group (NH2-(CH2)3-MCM-41) and chloropropyl group (SH- (CH2)3-MCM-41) and pure mesoporous silica (MCM-41) have been synthesized via the microwave-assisted hydrothermal method. The samples were characterized by X ray diffraction, FT-IR spectroscopy and Nitrogen adsorption-desorption. Then adsorption test of copper ion was investigated. Langmuir model is...
The conditions for the preparation of activated carbon(AC) from corn cob(CC) treated with NaHCO3 using microwave radiation were optimized through response surface methodology (RSM) and central composite design (CCD).The effects of the radiation power, radiation time, and impregnation ratio were studied from the adsorption capacity on methylene blue dye(MB), and yield results.From the analysis of variance...
Using the anaerobic granular sludge acted as biosorbent, this paper studied the biosorption and desorption of copper-containing wastewater. The results showed that, granular sludge adsorption rate up to 97.67% and citric acid got best desorption efficiency. The study of kinetics model and thermodynamics isotherm adsorption model showed that Pseudo-second Order kinetic model and Langmuir isothermal...
This paper aims to raise a new kind of MDEA - TETA blended absorbent for capturing flue gas CO2, to study the absorption time, different concentration ratios and reaction temperature on the influence of the mixed amine-based absorbents and to compare absorption effect between different proportions of mixed amine-based absorbents and MDEA absorbent which commonly used in industry. The results showed...
Mixed matrix membrane (MMM) chromatography is an advanced method for whey protein fractionation. The adsorption capacity of MP500 anion exchange MMM chromatography was evaluated by batch experiments using simulated whey containing a single whey protein component and real whey at pH 6. The binding preference for whey proteins was demonstrated to follow the order: β-lactoglobulin > bovine serum albumin...
Adsorption-desorption behaviors of phosphorus (P) on the surface sediments of Yellow River estuary(Y) were investigated in the natural water (river water and seawater) . The results show that(1)The releasing P to the seawater of Y mainly occurs in 0~48h, which occupies 80% of total amount of releasing P. However, releasing P became slowly in 48~96h and according to this speed average kilogram sample...
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