separation of oil from wastewater by air flotation

... Fe(III)/Cr(III) Namasivayam of dairy (11) and coworkers from employed solutions of using containing congo fly ash and coal(g) et al (12) have of nickel of this a textile such of chlorophenol study ... red by red mud initial with stages lapse of of time 90 uptake for all the dye of dye decreased concentrations curves monolayer increased from were single, smooth coverage of on dye and outer of ... samples varied from no change the data were for of the effect dye after Langmuir taken from and batch of agitation dose in absorbance removal and adsorbent desorption adsorption of 10 mg/L greater...

Ngày tải lên: 23/09/2012, 14:47

... trans-membrane pressure of 2.0 barg: permeate water sample with 1000 ppm oil concentration (middle); Permeation water sample from the tangential microfiltration of a feed of 1000 ppm of oil in water (right) ... microfiltration membrane, oil- water feed of 1000 ppm oil concentration, Appendix D.1) Table 5.7-3 Standard deviation feed water samples (0.5 μm ceramic microfiltration membrane, oil- water feed of ... microfiltration membrane, oil- water feed of 1000 ppm oil concentration, Experiment 1, Appendix D.1) Figure 5.4-2 The effects of fouling on permeability (0.5 μm ceramic microfiltration membrane, oil- water...

Ngày tải lên: 09/09/2015, 11:25

... the Examination of Water and Wastewater (APHA, 1998) The characteristics of wastewater are listed in Table Table 1: Characteristics of complex industrial wastewater Parameter Unit Wastewater pH ... degradation of organic matter by ozone in case of complex wastewater Thus, some global wastewater parameters such as color and COD are used for degradation kinetics of organic matter by ozonation ... content of colorants in wastewater, their variety and stability hamper or even prevent their treatment The treatment of complex industrial wastewater is a difficult and costly task because of its...

Ngày tải lên: 05/09/2013, 09:08

... methods Results A questionnaire to assess GCS knowledge (additional file 1) was designed by the two first authors of the study It consisted of two parts: A total of 130 questionnaires were sent to the ... number of points to them The minimal score was described as by 100% of the participants and the maximum score of 15 by all but one physician (99%) The clinical case showed incorrect scoring of the ... overall GCS by 38 physicians (36.9%) While the correct answer was a summed GCS-score of 6, the answers ranged from to (figure 1) The errors in the assessment of the clinical case by the level of training...

Ngày tải lên: 13/08/2014, 23:20

... minutes Fig Effect of backflush pressure on the flux, MLSS of 8700 mg/l, TMP of 0.4 bar, CFV of 0.88 m/s, backflushing pressure of 1.5 bar and backflushing interval of s Fig Effect of backflush interval ... average value of removal about 95 % from the original concentration of dyes of 90 to 300 mg/L a b c d Fig Disparity of treated (effluent) and untreated (influent) wastewater (a: effluent of 24-day ... The main unit consisted of an aeration tank and a microfiltration membrane as separation apparatus The aeration tank was made from Plexiglas with a working volume of liters Air was supplied to the...

Ngày tải lên: 05/09/2013, 09:08

Ngày tải lên: 18/08/2013, 04:10

... stock solutions of As(III) were prepared from As(III) standard solution of 1003mg/L (Wako Pure Chemicals Ltd, Japan) The stock solutions of As(V) were prepared by dissolving 4.1646mg of Na2HAsO4.7H2O ... 70.19m²/g, pore volume of 0.00062cm3/g and pore size of 126Å Preparation of AC-Fe AC from coconut shell was taken from MAPECOH, Inc (Philippines) with a particle size of 0.45-0.71mm after sieving ... the process kinetics of adsorption From equation (1), the use of n=1 from calculation and the assumption in section 3.1 (adsorption equilibrium), gives the overall rate of adsorption/de-sorption...

Ngày tải lên: 05/09/2013, 09:38

... level (T.P.) and 1.2-1.7 m from the water level of Lake Biwa (84.4 m T.P.) The type of the surface soil of EPW is alluvial gray soil Chemical properties of the paddy soil were summarized in Table ... observation of storm-runoff events is not so easy to carry out sufficient times of the observation Then, the samples of storm-runoff loads were supplemented with the storm-runoff loads calculated by using ... calculated from monthly data of Ci of the water sample reserved in the deposit sampler and Qi of the volume by ILM The annual net-load (unit load) of TN was 35.8±4.05 kg ha-1 y-1 on the average of three...

Ngày tải lên: 05/09/2013, 09:38

... investigate the effects of pH values within the range of 5-9, of initial arsenic concentrations within the range of 1.42 - 7.39 mg/L and of adsorbent doses within the range of 0.5 - 5.0g/L, as well ... RH-Fe5%, particle size of 0.1-0.35 mm, with Co of 1.42-7.38 mg/L, adsorbent dose of 2.5 g/L, pH of simulated groundwater (pH 8.18) Comparison of adsorption isotherms The values of the linear and nonlinear ... preparation of ironmodified RH was conducted in a similar way by Mondal et al (2007a) in order to modify the activated carbon by impregnation with iron for the removal of arsenic One hundred grams of...

Ngày tải lên: 05/09/2013, 09:38

... 2-chloro-5-methyl-4-nitrophenol (2C5M4NP) was obtained by custom order from Chemical Soft R&D Inc (Kyoto, Japan) 20 mg of each of the chemicals is dissolved into L of distilled water and mg-Cl/mg-C of sodium hypochlorite was ... productions of two CBPs from fenitrothion were studied As shown in Fig 1(A), productions of fenitrooxon (peak a) and 3M4NP (peak b) in the sample of chlorinated fenitrothion were confirmed by GC retention ... Chlorination By- Products of Fenitrothion In order to obtain TC3MP (c), compounds produced in the sample of chlorinated 3M4NP were separated and purified by TLC, and six fractions were obtained A result of...

Ngày tải lên: 05/09/2013, 10:15

... was 10 mg-Cd/L, the volume of solution was 50 mL, and the amount of charcoal was 20 mg Three days from the start of contact (concentration of cadmium was mg-Cd/L, amount of cadmium adsorbed was ... Removal of Copper(II) and Cadmium(II) in Water by Use of Roasted Coffee Beans, J Chem Soc Japan, No 3, 459-461 (In Japanese) Petrov N., Budinova T and Khavesov I (1992) Adsorption of the ions of zinc, ... ions from aqueous solutions on an activated carbon cloth, Carbon, 40, 1109-1115 Basso M C and Cukierman A L (2006) Wastewater Treatment by Chemically Activated Carbons from Giant Reed: Effect of...

Ngày tải lên: 05/09/2013, 10:15

... microenvironment with the help of specific group of bacteria The production of VFA by microorganisms was affected by various factors, such as pH, temperature, finds of inoculum, and treatment of seed sludge ... production of hydrogen mainly depends on the duration of heat treatment of sludge From Figure 2, it can be observed that, after 60min of duration time, the sludge produced maximum hydrogen production of ... conditions of the reactor were optimized (pretreatment, pH, temperature and nitrogen source) Materials and methods 2.1 Rice bran de- oiled wastewater Rice bran de-oiled wastewater was collected from...

Ngày tải lên: 05/09/2013, 16:11

... ANALYSIS OF THE INAUGURAL ADDRESS BY G.W BUSH IN THE U.S PRESIDENTIAL ELECTION 2004 FROM A PERSPECTIVE OF D.A TABLE OF CONTENTS ACKNOWLEDGEMENTS TABLE OF CONTENTS List of figures ... of language but the interpretation of that use needs non-linguistic features of the discourse 1.1.3.3 Features of context The best known overview of the context of situation is perhaps that of ... world at large: the context. Context of culture Context of situation TEXT Figure 1.1: Theory of context of situation Cook, in the same study of language in and out of context, adds that when we receive...

Ngày tải lên: 18/12/2013, 10:08

... varied in range of 3.2 to 4.8 g/l with 0.25 g/l of CaOCl2 added The effect of concentration of CaO to the odor of wastewater was shown in Table When the concentration of CaO increase, wastewater is ... be explained by precipitation of Ca2+ with soluble pollutants Effect of CaOCl2 concentration Wastewater was added with a range of 40 200 mg/l of CaOCl2 with fixed 4.4 g/l of CaO From Table we ... of TCVN 5945-2005 After combination of results in tables 2, and we demonstrate that 120 mg/l of CaOCl2 and g/l of CaO is the best condition for treatment of litre wastewater After treatment by...

Ngày tải lên: 12/02/2014, 17:20

... activity was defined as the reduction of lmolÆmin)1 of NADH (corresponding to the carboxylation of lmolÆmin)1 of acetyl-CoA) Quantification of CoA The concentration of CoA was quantified using DTNB, ... the addition of CoA solution) The Km value for CoA of the OGOR enzyme is reported to be 80 lm [30] Thus, decarboxylation of 2-oxoglutarate can proceed as a result of CoA contamination of the acetyl-CoA ... CoA is regenerated by the reductive carboxylation of acetyl-CoA (Fig 1, dashed arrow) The reaction rate of this coupled assay was significantly affected by the concentration of CoA (Fig 2B) Although...

Ngày tải lên: 16/02/2014, 09:20

... intermediate by the unique action of the serpin, whereby the RCL of the serpin inserts into the major A b-sheet causing the protease to be rapidly translocated from the top to the bottom of the inhibitor ... important, as the impairment of heparin binding on mutants of AT has disease-causing consequences [23] Recently, the structure of AT templated to a genetically modified form of thrombin by a synthetic ... (1998) Mechanism of heparin activation of antithrombin Role of individual residues of the pentasaccharide activating sequence in the recognition of native and activated states of antithrombin...

Ngày tải lên: 20/02/2014, 02:21

... decreases by about A to 18.7 A on binding of cAMP to the anti-cAMP-binding sites of the protein The distance between the sulfur atom of Cys178 and the C9C10 bond of the indole ring of Trp85, derived from ... the mobility of helix A of the protein As Trp13 is located in the vicinity of the activation region AR2 of the protein [1], which is responsible for the activation of the second class of E coli ... transition of CRPW85A on binding of cAMP The effect of different concentrations of cAMP on the uorescence intensity of Trp13 is shown in Fig 2B When 200 lM cAMP was added to the solution of CRPW85A,...

Ngày tải lên: 20/02/2014, 23:20

... Coronation of Charles Cromwell lands in Fife Charles marches into England Defeat of the earl of Derby Battle of Worcester Defeat of the royalists The king escapes Loss of the royalists Adventures of ... King Is Brought From Holmby To The Army Independents Driven From Parliament Restored By The Army Origin Of The Levellers King Escapes From Hampton Court, And Is Secured In The Isle Of Wight Mutiny ... The House Of Commons Is Purified The King's Trial Judgment And Execution Reflections The king at Holmby Character of Fairfax Opposition of the Independents Demands of the Army Refusal of parliament...

Ngày tải lên: 22/02/2014, 04:20

... (of contaminant) per billion (parts of air) by volume parts (of contaminant) per million (parts of air) by volume Socioeconomic Status Sulphur Dioxide Total Suspended Particulate micrograms (of ... vehicles are being offset by increases in traffic volumes 18 Air Pollution Illnesses from Traffic Air Toxics Vehicles are a significant source of air toxics’ (toxic chemicals in the air) Air toxics ... metre (of air) by weight Volatile Organic Compound v vi Air Pollution Illnesses from Traffic Air Pollution Illnesses from Traffic Introduction This report summarizes new work undertaken by Toronto...

Ngày tải lên: 06/03/2014, 16:20

... the Health Aspects of Air Pollution The main objective of this Task Force, which is chaired by WHO, is to prepare state -of- theart reports on the direct and indirect effects of air pollutants on ... because of variations in airway size and the tissue surface of the conducting airways, leading to higher levels of absorption in children and women (7) Diffusion of ozone across the airway epithelial ... correlation of ozone with other pollutants varies by season and location These unique features of the atmospheric chemistry of ozone make the interpretation of the shape of exposure–response SOURCES OF...

Ngày tải lên: 06/03/2014, 16:20