adsorption from liquid solution

Arsenic removal from aqueous solutions by adsorption on red mud pps

... lÀ1 As(V) stock solution These stock solutions were used to prepare experimental solutions of speci®ed concentrations One gram of red mud powder was placed in a conical ¯ask Solutions containing ... ®nd out its As(III) and As(V) adsorption characteristics Batch experiments show that red mud is capable of removing arsenic from aqueous solutions As(III) and As(V) adsorptions are equilibrated ... data from the study on temperature indicate that As(III) adsorption reaction is exothermic and that of As(V) is endothermic A practically usable adsorbent should be readily separated from the liquid, ...

Removal of phenol from aqueous solutions by adsorption onto organomodified

Danh mục: Thạc sĩ - Cao học

... metals from aqueous solutions The objective of this study was to investigate the adsorption potential of bentonite for removal of phenol from aqueous solutions The natural bentonite was obtained from ... 17 from aqueous solutions by adsorption onto activated carbon prepared from sunﬂower seed hull, J Hazard Mater 151 (2008) 316–322 [33] P.S Nayak, B.K Singh, Removal of phenol from aqueous solutions ... phenol solutions were prepared by diluting the appropriate volumes of the stock solution The pH of the solutions was adjusted to 9.0 by addition of 0.1 M HCl or 0.1 M NaOH solutions The adsorption...

Phosphate removal from aqueous solutions using red mud wasted in bauxite Bayer's process

Danh mục: Môi trường

... for removal of phosphates from aqueous solutions [7] Zakharova et al have reported the production of mixed aluminium-iron coagulant from red mud and spent pickling liquor from iron smelting plants ... investigations on red mud wasted from Guinean bauxite and its utilization for phosphate removal from aqueous solutions are discussed Experimental procedure Red mud was obtained from a bauxite ore refinery ... activated red mud In Fig the results are compared for OPh -solution, and in Fig for TPPh -solution The quantity of PO 3- removed from OPh -solution when activated red mud was used was almost double...

Removal of Cadmium from Aqueous Solutions by Charcoals Prepared from Giant Reed (Arundo donax)

Danh mục: Môi trường

... (2006) reported the adsorption of nickel on an adsorbent prepared from giant reed However, there are only a few studies regarding cadmium adsorption on charcoal prepared from giant reed with ... from aqueous solutions For estimating the removal rate, time courses of cadmium concentration in aqueous solution and calculated amount adsorbed were measured as well as the pH value of the solution ... metals from aqueous solution by nonliving Uiva seaweed as biosorbent, Wat Res., 39, 1803-1808 Urano K., Mizusawa H and Kiyoura R (1970) Determination of Pore-Size Distribution from Methanol Adsorption, ...

Báo cáo "Reseach on the removal of hexavalent chromium from aqueous solution by iron nanoparticles " doc

Danh mục: Báo cáo khoa học

... was used for preparing all solutions - The Fe0 nanoparticles were synthesized before use The Fe0 nanoparticles were synthesized by dropwise addition of NaBH4 aqueous solution into 1000ml flash ... of Cr(VI) was performed in 1000 ml flash, Cr(VI) aqueous solution was added into the flash containing iron nanoparticles The reaction solution was stirred After that, the sample was filtered ... Cr(VI) reduction Experimental conditions: Fe0 dosage 0,1g/l, Cr(VI) 2.0mg/l, changing pH from 2.5 to The reaction solution was stirred about ten minutes After that, the sample was filtered through...

removal of basic blue 159 from aqueous solution using

Danh mục: Vật lý

... These groups are The aim of this work was to study the adsorption responsible for the adsorption capacity of some of BB159 from aqueous solution onto banana peel specific solutes through ionic ... These groups concentration of an unknown solution For each have negative charge where can be good sites for adsorption process, the absorbance of dye solution adsorption of Basic Blue 159 2500 2000 ... maximum level at adsorption process, particularly the adsorption the pH of 9.0.Carolyn Palma and et all [12] have capacity The pH of the solution changed due shown that if the pH of a solution is...

light scattering from polymer solutions and nanoparticle dispersions, 2007, p.200

Danh mục: Vật lý

... in the experimental practice of light scattering 1.2.1 Scattering from Dilute Solutions of Very Small Particles For very dilute solutions of small scattering particles (for example nanoparticles ... 3-540-61689-6 (hardcover) ISBN: 3-540-65551-4 (softcover) Wolfgang Schärtl Light Scattering from Polymer Solutions and Nanoparticle Dispersions With 95 Figures and 16 Tables 123 Wolfgang Schärtl ... illustrative textbook about the seemingly very complicated topic “light scattering from polymers and nanoparticles in dilute solution, ” but also intends to cover some of the newest stateofthe-art technical...

Báo cáo hóa học: " The Linear Thermal Expansion of Bulk Nanocrystalline Ingot Iron from Liquid Nitrogen to 300 K" pot

Danh mục: Hóa học - Dầu khí

... BNII varied from 50 to 89 nm with an equiaxed structure [18] Figure presents LTE of BNII at six measurement directions on rolling plane and CPII at one measurement direction from liquid nitrogen ... is about 23.5 K for iron Therefore, Eq is suitable for ﬁtting our LTE results of BNII and CPII from liquid nitrogen temperature (77 K) to 300 K [1] 123 50 Nanoscale Res Lett (2010) 5:48–54 Results ... BNII and CPII The absolute value of A0 Fig The linear thermal expansion b(T) of BNII and CPII from liquid nitrogen temperature to 300 K 123 Fig The measurement direction dependence of the parameter...

Magnetic chitosan nanoparticles for removal of Cr(VI) from aqueous solution

Danh mục: Tài liệu khác

... obtained from Eq (3) reﬂects a spontaneous (favorable) adsorption process of Cr(VI) (Table 3), while the negative value of ΔH indicates that the adsorption reaction is exothermic and the adsorption ... Cr(VI) adsorption behavior on the prepared magnetic chitosan nanoparticles has been studied under various conditions of different solution pH values and adsorption contact times Optimal adsorption ... the adsorption of the Cr(VI) on magnetic chitosan nanoparticles N.N Thinh et al / Materials Science and Engineering C 33 (2013) 1214–1218 Table Adsorption equilibrium constants obtained from...

Preparation of chitosan magnetite composite beads and their application for removal of Pb(II) and Ni(II) from aqueous solution

Danh mục: Tài liệu khác

... (SEM/EDS) JSM-5410 Spectrometer 2.4 Adsorption studies Chitosan/magnetite nanocomposite beads were used as magnetic adsorbents for the adsorption of Ni(II) and Pb(II) The adsorption behaviors of Pb(II) ... glyoxim 1.2 wt.%, sodium hydroxide solution and Br2 solution After the formation of the Ni(II)-dimetyl glyoxim complex, the concentration of Ni(II) ions was determined from the absorbance at 475 nm ... Application of chitosan/magnetite composite beads for removal Ni(II) and Pb(II) in solution 3.2.1 Isotherm adsorption study Adsorption isotherm is a functional expression that correlates the amount of...

Development of multifunctional membranes for visual detection and adsorptive removal of heavy metal ions from aqueous solutions

Danh mục: Y - Dược

... 5.6 Result of co -adsorption of 800g/L Hg(II) and 15mg/L HA in the same solution (a) Hg(II) adsorption; (b) HA adsorption; (c) membrane color after adsorption 300min (22-23 , 100mL solution, initial ... i.e., batch adsorption and filtration of individual Hg(II) and HA solutions; sequential adsorption and filtration of individual Hg(II) and HA solutions; co -adsorption and co-filtration of solutions ... of 5min for Hg(II) solution and 300min for HA solution) Fig 5.2 Results of sequential adsorption (a) Hg(II) (800µg/L) adsorption on CS/CA-TPPS-HA membrane; and (b) HA (15mg/L) adsorption on CS/CA-TPPS-Hg...

Study in the preparation of poly (4 vinylpyridine) based nanoparticles and their application as an effective adsorbent for the recovery of palladium from aqueous solutions

Danh mục: Cao đẳng - Đại học

... ions or molecules from the surrounding solutions), thereby giving rise to high adsorption capacities and fast kinetics To fully separate them from treated effluents or waste solutions for regeneration ... were accessible to ions, ionic complexes and molecules from the surrounding solution, which contributed to enhanced adsorption capacity Both adsorption isotherm and kinetic studies demonstrated ... for adsorptive removal of metal ions from aqueous solutions 2.2 Review of Nanoparticles as Adsorbents for Metal Ion Removal To remove metal ions from aqueous solution as effective and efficient...

Selective removal of estrogenic compounds from aqueous solution using novel adsorbent molecularly imprinted polymer

Danh mục: Cao đẳng - Đại học

... Study on adsorption isotherms 101 4.5.1 Adsorption isotherms for E1, E2, EE2 and BPA in aqueous solution 102 4.5.2 Modeling of adsorption isotherms 110 4.6 Adsorption ... and NIP 97 Fig 4-7 Adsorption isotherms of MIP and NIP for E1 in aqueous solution 104 Fig 4-8 Adsorption isotherms of MIP and NIP for E2 in aqueous solution 104 Fig 4-9 Adsorption isotherms ... on adsorptions of MIP and NIP 149 4.8 Study of adsorption kinetics in aqueous solution 152 4.9 Regeneration of MIP 157 4.9.1 Regeneration of immobilized MIP 159 4.9.2 Adsorption...

Study of polyamine functionalized PGMA beads as adsorbents for the removal of heavy metal ions from aqueous solutions

Danh mục: Cao đẳng - Đại học

... adsorbent on adsorption through the coefficient α 2.2.5 Kinetic models of adsorption The kinetics of adsorption is a critical factor in the design of the adsorption system 23 Information on the adsorption ... ion adsorption performance It was found that PGMA-DETA achieved excellent Cu ion adsorption performance at higher pH values in the pH range of 1-6, with high adsorption capacities and fast adsorption ... ion adsorption at different solution pH values, based on XPS analysis results (Initial concentrations for copper adsorption: 0.5 mmol/L) Table 3.2 Parameter values of the different types of adsorption...

A comparative study of low cost biomaterials for the removal of chromium (VI III) from aqueous solutions

Danh mục: Tổng hợp

... phenomenon, and the adsorption or reduction process may not be the removal mechanism for Cr(III) ions or salts from the aqueous solution Apart from the adsorption of Cr(VI) ions, Ulva showed adsorption ... 4.31 Adsorption Isotherm for Cr(VI) adsorption by Tea and coffee dust 69 Figure 4.32 Adsorption Isotherm for Cr(VI) Adsorption by Tea and coffee dust 70 Figure 4.33 Percentage Reduction /Adsorption ... isotherm for adsorption of Cr(VI) and Cr(III) ions from aqueous solution by seaweeds 41 Percentage adsorption of Cr(VI) and Cr(III)ions by chemically modified biomass of Sargassum and Ulva 43 Adsorption...

Adsorptive removal of rhodamine b from aqueous solution using brewers spent grains batch and column study

Danh mục: Tổng hợp

... the BSG for higher adsorption capacity, (ii) to better understand the adsorption mechanism, and (iii) to further analyze the performance of adsorption processes for dye removal from real industrial ... excellent adsorption capacity of silica was reported in the removal of textile dye Basic Blue from effluents and was employed for adsorption of Rhodamine B, Acid Red 4, and Nile Blue sulfate from ... Rhodamine B solution, dye adsorption experiments were done at pH range of to 12 using initial dye concentration of mg/L As it can be observed from Fig 3, the dye removal percentage increased from 21%...

Recovery of acetonitrile from aqueous solutions using zeolitic imidazolate framworks

Danh mục: Cao đẳng - Đại học

... acetonitrile from aqueous solutions to circumvent possible future supply disruption from interfering with essential industrial and laboratory work The separation of acetonitrile from aqueous solutions ... component i in the adsorbed and liquid phase, respectively Fig 11 Adsorption Isotherms of Binary Solution in ZIF-8, -10, -25, -60, -71, -90, -96 and -97 at 298K Inset: Adsorption isotherms of water ... ZIF-97 31 Fig Simulated Water Adsorption Isotherms at 298 K 32 Fig 10 Density Contours of Water in ZIF-8and ZIF-97 33 Fig 11 Adsorption Isotherms of Binary Solution in ZIF-8, -10, -25,...

Humic acid removal from aqeous solution by hybrid eletrodialysis ion exchange

Danh mục: Tổng hợp

... concentration, the vii flow rate of HA solution, the HA concentration, the pH of HA solution, the ionic strength of HA solution and the Cu2+ concentration in HA solution Higher voltage leads to a ... of Zn from Na-containing solution (Grebenyuk et al., 1998), to purify water by removing radioactivity in a Counting Test Facility (Balata et al., 1996), or to remove polluting ions from solution ... (Figure.2.6) (1) Diffusion from the bulk stream through the boundary layer to the membrane -solution interface; 26 (2) Diffusion inside the membrane; (3) Diffusion from the membrane -solution interface...

Development of novel titanate nanotubesreduced graphene oxide composite for the removal of heavy metals from aqueous solution

Danh mục: Tổng hợp

... at 50oC 3.2.4 Adsorption Experiment Adsorption of Cu (II) ion by TNT, rGO-TNT composites in aqueous solutions was investigated in centrifuge tubes 25 Adsorption of Cu(II) by TNT Adsorption of ... 4.6 The adsorption of Cu(II) by TNT at pH=5 in aqueous solution at room temperature.……………………………………………………………….… … 37 Figure 4.7 The adsorption of Cu(II) by rGO /TNT composite in aqueous solution ... for the removal of heavy metals from aqueous solution There are many different technological solutions to water pollution treatment; however, when applying any solution to clean water should also...

Preparation and Evaluation of Chitin- Acrylic acid Greaft Copolymer for waste water treament Adsorption behavior of Chromium(III) ion from solution

Danh mục: Báo cáo khoa học

...

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