[PDF] Top 20 Adsorption Efficiency of Polyvinyl Alcohol -Alginate Beads on Cr (VI): Effect of pH and Temperature

Adsorption Efficiency of Polyvinyl Alcohol -Alginate Beads on Cr (VI): Effect of pH and Temperature

... the temperature of 100 o C for 1 minute. Meanwhile, 2.5 g of sodium alginate (QRëC) was added into 20 mL of distilled water, stirring until completely ...sodium alginate gel were mixed together with ... See full document

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Anion Exchange Sorption of Chromate from Aqueous Solutions by Activated Carbon

... the adsorption of both anion and cation from aqueous solution to the solid ...of temperature (293K, 303K, 313K, and 323K) on the anion exchange sorption of chromate by the virgin sample of AC ...that ... See full document

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EQUILIBRIUM AND THERMODYNAMIC STUDIES OF THE REMOVAL OF CHROMIUM (VI) FROMAQUEOUS SOLUTIONS USING GROUNDNUT SHELL

... obvious effect on the extent of hexavalent chromium adsorbed onto groundnut ...the effect of temperature on theremoval percentage of Cr(VI), experiments were carried out at different ... See full document

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Use of Agricultural Waste for Removal of Cr(VI) from Aqueous Solution

... The Cr(VI) loadings on sorbents were computed based on mass balance through loss of metal from aqueous ...solution. Effect of various pH; temperature; dose 1, 2, 3, 4 and 6 g/100 ml of ... See full document

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Understanding the Adsorption Efficiency of Chitosan Coated Carbon on Heavy Metal Removal

... The effect of the adsorbent dose was studied at room temperature by varying the sorbent amounts from 1 to 6 ...the adsorption of Cr(VI) and Cd(II) ions increase rapidly with increase in ... See full document

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Sandal reactive dyes decolorization and cytotoxicity reduction using manganese peroxidase immobilized onto polyvinyl alcohol-alginate beads

... as adsorption, precipitation, chemical reduction, ionizing radiations and ultrafiltra- ...low efficiency, secondary pollution, residues waste problems and the inability to treat a wide array of dyes having ... See full document

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CHEMICAL MODIFICATION OF CHITOSAN AND FORMULATION OF ITS NANOPARTICLES FOR PROTEIN DRUG DELIVERY SYSTEM

... weighed amount of protein Loaded Beads were placed in the baskets and then submerged into 900 ml dissolution flask containing 500ml of PBS pH 6.8 for 3 hrs. Aliquots of 2 ml were withdrawn and replaced with ... See full document

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Fabrication of PVA/Ag Nanocomposite Hydrogels using Sol Gel Technique: Swelling and Removal of Chromium Ion Studies

... Adverse effects of the hexavalent form on the skin may include ulcerations, dermatitis, and allergic skin reactions [1]. Inhalation of hexavalent chromium compounds can result in perforation of the mucous membrane of the ... See full document

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Thermodynamic Properties of Chromium (III) Ion Adsorption by Sweet Orange (Citrus sinensis) Peels

... that adsorption decreases with increasing temperature for the same mass of adsorbent and ...the adsorption process is physisorption. The isosteric heat of adsorption (∆ H r ), is not ... See full document

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Sorption of Cr(VI) on the wood of Japanese larch treated with concentrated sulfuric acid

... remove Cr(VI) from aqueous solutions were ...solution pH, temperature, and initial concentration of Cr(VI) in ...of Cr(VI) was highly solution pH dependent ... See full document

5

Kinetics of Oxidation of Allyl Alcohol By Cr(Vi)

... The effect of acidity was studied by varying the concentrations of perchloric acid and the rate constants were increased with the increase in the concentrations of perchloric acid (Table ... See full document

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Synthesis and characterization of zeolite linde w and its application as adsorbent for Malathion

... The adsorption of the methoxychlor onto zeolite W was investigated by batch ...desired pH value, different concentration of sorbent dosages in 150ml stoppered conical flask containing 50 ml of test ... See full document

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Application of adsorption methods to determine the effect of pH and Cu-stress on the changes in the surface properties of the roots

... of adsorption, the analysis of variance (homogeneity of variance - the Fisher-Snedecor F-test) was ...vapour/nitrogen adsorption energy of roots, we used the post-hoc Test - RIR Tukey, which analyses the ... See full document

10

Effect of pH, and Salinity onto Swelling Properties of Hydrogels Based on H-alginate-g-poly(AMPS)

... Synthesis of the hydrogel, H-alginte-g- poly(AMPS), was carried out using APS as an initiator and MBA as a crosslinker in an aqueous medium. A general procedure for crosslinking graft copolymerization of AMPS onto ... See full document

5

Adsorption studies of Cr(VI) and Mn(II) in solution on a synthesized melamine formaldehyde supported Attapulgite clay

... both, Cr +6 and Mn +2 ions using adsorption process at variable conditions of pH, contact time, ion concentration and ...The adsorption characteristics of the new formed composite toward the ... See full document

10

Synthesis of pH Sensitive Hydrogel Based on Starch Polyacrylate Superabsorbent

... Since the semi-IPN hydrogels show different swelling behaviors at various pHs, so we investigated their pH-re- versibility in the solutions buffered at pHs 2 and 8 (Fig- ure 4). The figure shows a stepwise ... See full document

5

A Review on Cr(VI) Adsorption Using Inorganic Materials

... its adsorption decreases with increasing pH and when competing dissolved anions are ...remove Cr(VI) from wastewater but these techniques have disadvantages such as high cost, non-selective, ... See full document

9

Temperature Effect, Activation Energies and Thermodynamics of Adsorption of ethyl 2-(4-(2-ethoxy-2-oxoethyl)-2-pTolylquinoxalin-1(4H)-yl)Acetate on Cu in HNO3

... apparent activation energy E a in the presence and absence of inhibitor. Higher values for E a were found in the presence of inhibitors. Other studies [27-29] showed that in the presence of inhibitor the apparent ... See full document

9

Effect of Temperature and pH in Adsorption of Pb+2 Ions by Porous Perlite Clay

... initial pH values are depicted in figure ...the pH value of the solution from 2 to 5 leads to an acceleration in the adsorption rate especially in the earlier ...of adsorption rate on ... See full document

5

Design, equilibrium and operation for ultrasound assisted batch adsorption of Cr (VI) on some nano-bioadsorbent

... the efficiency. The process is found to be governed by pH, adsorbent dose, sonication time and initial concentration at fixed ...for Cr(VI) species. The maximum efficiency was achieved ... See full document

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