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Jeanphilippe Croue - One of the best experts on this subject based on the ideXlab platform.
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combination of coagulation and ion Exchange for the reduction of uf fouling properties of a high doc content surface water
Water Research, 2007Co-Authors: Hugues Humbert, Herve Gallard, Valerie Jacquemet, Jeanphilippe CroueAbstract:Abstract The treatment of a high DOC content surface water (about 6 mg DOC/L) using Anion Exchange Resins (MIEX ® resin from Orica or IRA958 ® resin from Rohm and Haas) can remove up to 80% of DOC in less than 45 min. The combination of coagulation prior to or after resin treatment only slightly improves the removal of DOC (0.2–0.3 mg/L) but eliminates the high MW organic compounds (MW >20 kDa) attributed to biopolymers (proteins and polysaccharides) that were not removed using Anion Exchange Resins alone and that were found to be responsible for reversible fouling of UF membranes (YM 100 UF membrane from Millipore with MW cut-off of 100 kDa). The combination of treatments then significantly improves the permeability of the UF membrane. Also, the combination of both treatments allows a reduction of the coagulant doses by a factor of 6 with no impact on the DOC removal and the filterability of produced waters.
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performance of selected Anion Exchange Resins for the treatment of a high doc content surface water
Water Research, 2005Co-Authors: Hugues Humbert, Herve Gallard, Herve Suty, Jeanphilippe CroueAbstract:Abstract The objective of this study was first to compare the performance of four strong Anion Exchange Resins (AERs) (MIEX ® from Orica Pty Ltd, DOWEX-11 ® and DOWEX-MSA ® from DOW chemical and IRA-938 ® from Rohm and Haas) for their application in drinking water treatment (natural organic matter (NOM), mineral Anions (nitrate, sulfate and bromide) and pesticide removal) using bench-scale experimental procedures on a high DOC content surface water. The efficiency of MIEX ® for NOM and mineral Anions removal was furthermore evaluated using bench-scale dose-response experiments on raw, clarified and post-ozonated waters. NOM removal was assessed using the measurement of dissolved organic carbon (DOC), UV absorbance at 254 nm (UV 254 ) and the use of high-performance size exclusion chromatography with UV (HPSEC/UV) and fluorescence detection (HPSEC/FLUO). The MIEX ® and IRA938 ® Anionic Resins exhibit a faster removal of NOM and mineral Anions compared to the DOWEX11 ® and MSA ® AERs. All the Resins were found to be very effective with similar performances after 30 to 45 min of contact time. As expected, only limited sorption of atrazine and isoproturon ( C 0 =1 μg/L) occurred with MIEX ® , DOWEX11 ® and MSA ® AERs. MIEX ® resin proved to be very efficient in eliminating NOM of high-molecular weight but also a large part of the smallest UV absorbing organic compounds which were refractory to coagulation/flocculation treatment. Remaining DOC levels after 30 min of contact with MIEX ® were found similar in raw water, clarified water and even post-ozonated water implying no DOC benefit can be gained by employing conventional treatment prior to MIEX ® treatment. Removal of bromide (initial concentration 110 μg/L) was also observed and ranged from 30% to 65% for resin dose increasing from 2 to 8 mL/L.
Hugues Humbert - One of the best experts on this subject based on the ideXlab platform.
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combination of coagulation and ion Exchange for the reduction of uf fouling properties of a high doc content surface water
Water Research, 2007Co-Authors: Hugues Humbert, Herve Gallard, Valerie Jacquemet, Jeanphilippe CroueAbstract:Abstract The treatment of a high DOC content surface water (about 6 mg DOC/L) using Anion Exchange Resins (MIEX ® resin from Orica or IRA958 ® resin from Rohm and Haas) can remove up to 80% of DOC in less than 45 min. The combination of coagulation prior to or after resin treatment only slightly improves the removal of DOC (0.2–0.3 mg/L) but eliminates the high MW organic compounds (MW >20 kDa) attributed to biopolymers (proteins and polysaccharides) that were not removed using Anion Exchange Resins alone and that were found to be responsible for reversible fouling of UF membranes (YM 100 UF membrane from Millipore with MW cut-off of 100 kDa). The combination of treatments then significantly improves the permeability of the UF membrane. Also, the combination of both treatments allows a reduction of the coagulant doses by a factor of 6 with no impact on the DOC removal and the filterability of produced waters.
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performance of selected Anion Exchange Resins for the treatment of a high doc content surface water
Water Research, 2005Co-Authors: Hugues Humbert, Herve Gallard, Herve Suty, Jeanphilippe CroueAbstract:Abstract The objective of this study was first to compare the performance of four strong Anion Exchange Resins (AERs) (MIEX ® from Orica Pty Ltd, DOWEX-11 ® and DOWEX-MSA ® from DOW chemical and IRA-938 ® from Rohm and Haas) for their application in drinking water treatment (natural organic matter (NOM), mineral Anions (nitrate, sulfate and bromide) and pesticide removal) using bench-scale experimental procedures on a high DOC content surface water. The efficiency of MIEX ® for NOM and mineral Anions removal was furthermore evaluated using bench-scale dose-response experiments on raw, clarified and post-ozonated waters. NOM removal was assessed using the measurement of dissolved organic carbon (DOC), UV absorbance at 254 nm (UV 254 ) and the use of high-performance size exclusion chromatography with UV (HPSEC/UV) and fluorescence detection (HPSEC/FLUO). The MIEX ® and IRA938 ® Anionic Resins exhibit a faster removal of NOM and mineral Anions compared to the DOWEX11 ® and MSA ® AERs. All the Resins were found to be very effective with similar performances after 30 to 45 min of contact time. As expected, only limited sorption of atrazine and isoproturon ( C 0 =1 μg/L) occurred with MIEX ® , DOWEX11 ® and MSA ® AERs. MIEX ® resin proved to be very efficient in eliminating NOM of high-molecular weight but also a large part of the smallest UV absorbing organic compounds which were refractory to coagulation/flocculation treatment. Remaining DOC levels after 30 min of contact with MIEX ® were found similar in raw water, clarified water and even post-ozonated water implying no DOC benefit can be gained by employing conventional treatment prior to MIEX ® treatment. Removal of bromide (initial concentration 110 μg/L) was also observed and ranged from 30% to 65% for resin dose increasing from 2 to 8 mL/L.
Zbigniew Hubicki - One of the best experts on this subject based on the ideXlab platform.
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Anion Exchange Resins of tri n butyl ammonium functional groups for dye baths and textile wastewater treatment
Solvent Extraction and Ion Exchange, 2016Co-Authors: Monika Wawrzkiewicz, Zbigniew HubickiAbstract:ABSTRACTEffectiveness of two strongly basic Anion Exchange Resins of the gel (Dowex PSR-2) and macroporous structure (Dowex PSR-3) was compared in order to remove three hazardous dyes such as C.I. Acid Orange 7 (AO7), C.I. Reactive Black 5 (RB5), and C.I. Direct Blue 71 (DB71) contained in water and textile wastewaters. Batch adsorption experiments were carried out to analyze the effect of phase contact time, initial dye concentration, and the presence of auxiliary materials (Anionic and cationic surfactants, Na2CO3, and Na2SO4). The Langmuir model better described the adsorption process of the dyes onto both Resins than the Freundlich model. The monolayer adsorption capacities (qe) of Dowex PSR-3 were calculated as 336.4 mg/g for AO7, 317.9 mg/g for RB5, and 150.4 mg/g for DB71 at 25°C. Dowex PSR-2 of the gel structure is characterized by considerably lower values of qe (50.1 mg/g for AO7, 17.2 mg/g for RB5, and 9.7 mg/g for DB71). Of special importance are high values of the working ion Exchange capacit...
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remazol black b removal from aqueous solutions and wastewater using weakly basic Anion Exchange Resins
Central European Journal of Chemistry, 2011Co-Authors: Monika Wawrzkiewicz, Zbigniew HubickiAbstract:In this study, the use of the weakly basic Anion Exchange Resins of phenol-formaldehyde (Amberlyst A 23), polyacrylate (Amberlite IRA 67) and polystyrene (Lewatit MonoPlus MP 62) matrices for removal of the reactive dye Remazol Black B (RBB) from aqueous solution and wastewater were investigated. RBB sorption on the Anion Exchangers was a time dependent process. Color reduction percentiles of 75.2, 33.9 and 25.1% in wastewater treatment were found after 216 h of phase contact time with Lewatit MonoPlus MP 62, Amberlyst A 23 and Amberlite IRA 67, respectively. Inorganic salts and Anionic surfactant action influenced RBB uptake by the Anion Exchangers. The amounts of dye retained by the Anion Exchangers increased with a rise in temperature. The maximum sorption capacities calculated from the Langmuir model were 66.4, 282.1 and 796.1 mg g−1 for Amberlite IRA 67, Amberlyst A 23 and Lewatit MonoPlus MP 62, respectively. Regeneration of phenol-formaldehyde and polystyrene Resins were possible using 1 M NaOH, 2 M KSCN, 1M KSCN in 40–60% methanol as well as 1 M NaOH in 60% methanol. Open image in new window
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comparison of strongly basic Anion Exchange Resins applicability for the removal of palladium ii ions from acidic solutions
Chemical Engineering Journal, 2011Co-Authors: Anna Wolowicz, Zbigniew HubickiAbstract:Abstract This study compared the ability of strongly basic Anion Exchange (SBA) Resins to remove palladium(II) ions from acidic solutions. All experiments were performed using Pd(II) ion solutions of 100 mg/dm 3 in concentration. Adsorption experiments using pretreated fixed-bed columns and the batch method were applied. Of commercially available SBA Resins, styrene–divinylbenzene Lewatit M-600 (gel structure), Amberlyst A-26 (macroporous) and acrylic Amberlite IRA-458 (gel), Amberlite IRA-958 (macroporous) were used in Pd(II) sorption from the chloride solutions containing hydrochloric acid of the concentration from 0.1 to 2.0 M with 1.0 and 2.0 M sodium chloride addition. The obtained results were compared with those for Anion Exchange Resins of the same type. Furthermore, sorption and kinetic parameters were calculated. Based on the values of working ion Exchange capacities obtained from the breakthrough curves, the selectivity series towards palladium(II) ions is following: Lewatit M-600 (0.0255 g/cm 3 ) > Amberlyst A-26 (0.0230 g/cm 3 ) > Amberlite IRA-458 (0.0060 g/cm 3 ) > Amberlite IRA-958 (0.0040 g/cm 3 ).
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Palladium(II) complexes adsorption from the chloride solutions with macrocomponent addition using strongly basic Anion Exchange Resins, type 1
Hydrometallurgy, 2009Co-Authors: Anna Wołowicz, Zbigniew HubickiAbstract:Abstract The use of the strongly basic Anion Exchange Resins, type 1 such as Lewatit MP-500 and Lewatit MP-500A for palladium(II) complexes adsorption has been investigated. The adsorption process was carried out from the chloride solutions with macrocomponent (sodium chloride) addition ( x M HCl–1.0 M NaCl; x M HCl–2.0 M NaCl) where the concentration of hydrochloric acid was constant and equal to x = 0; 0.1; 0.5; 1.0; and 2.0 M, respectively. The breakthrough curves of Pd(II) were determined and the sorption parameters (weight and bed distribution coefficients, working Anion Exchange capacity) were calculated. The pseudo-second kinetic order was applied in kinetic studies as well as to calculate the kinetic parameters. The values of the working Anion Exchange capacities (0.029 g/cm 3 ; 0.028 g/cm 3 ) for Lewatit MP-500 and Lewatit MP-500A (0.028 g/cm 3 ; 0.027 g/cm 3 ) in the 1.0 M NaCl and 0.1 M HCl–1.0 M NaCl solutions, respectively are really close and in other solutions under discussion Lewatit MP-500 possess slightly higher values of capacities, and therefore is insignificantly more efficient in the adsorption process of palladium(II) ions than Lewatit MP-500A. The equilibrium adsorption capacities changed in the range 8.84–9.99 and 8.40–9.38 mg/g for Lewatit MP-500 as well as 8.12–9.57 and 7.26–8.85 mg/g for Lewatit MP-500A in the chloride x M HCl-1.0 M NaCl and x M HCl-2.0 M NaCl solutions, respectively. The adsorption process proceeds according to the pseudo-second kinetic order.
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Sorption of palladium(II) complexes onto the styrene-divinylbenzene Anion Exchange Resins
Chemical Engineering Journal, 2009Co-Authors: Anna Wołowicz, Zbigniew HubickiAbstract:Abstract The sorption behaviour of palladium(II) complexes onto the strongly basic styrene–divinylbenzene Anion Exchange Resins of type 1 (Dowex MSA-1) and type 2 (Dowex MSA-2) from the chloride and chloride–nitrate solutions was investigated. The breakthrough curves of Pd(II) were determined and the mass and bed distribution coefficients, the working Anion Exchange capacities as well as the amount of palladium(II) complexes sorbed onto the Anion Exchangers under discussion were calculated. The effect of the phases contact time, hydrochloric and nitric acids and sodium chloride concentrations onto the sorption process was studied. The FT-IR spectra of pure Anion Exchangers and those loaded with palladium(II) complexes were recorded, too. The FT-IR spectra confirmed the difference in the composition of resin's functional groups and in Pd(II) binding additionally by means of O atoms involved in functional groups of Dowex MSA-2. The highest working Anion Exchange capacity is observed in the 0.1 M HCl solution; 0.0616 and 0.0583 g/cm 3 for Dowex MSA-1 and Dowex MSA-2, respectively. Both Anion Exchange Resins can be efficiently applied in sorption of Pd(II) complexes.
Du Changming - One of the best experts on this subject based on the ideXlab platform.
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removal of hexavalent chromium from aqueous solutions by d301 d314 and d354 Anion Exchange Resins
Journal of Hazardous Materials, 2009Co-Authors: Taihong Shi, Zhuochao Wang, Yang Liu, Shiguo Jia, Du ChangmingAbstract:Abstract Removal of hexavalent chromium from electroplating industry wastewater is obligatory in order to avoid pollution. Batch shaking experiments were carried out to evaluate the adsorption capacity of Resins (D301, D314 and D354) in the removal of chromium from aqueous solutions. Varying experimental conditions were studied, including Cr 6+ concentrations, resin amounts, initial pH, contact time and temperatures. The ion-Exchange process, which is pH-dependent, indicated the maximum removal of Cr 6+ in the pH range of 1–5 for an initial concentration 100 ppm of Cr 6+ . It was found that more than 99.4% of the removal was achieved under optimal conditions. High adsorption rates of chromium for the three Resins were observed at the onset, and then plateau values were gradually reached within 30 min. The experimental results obtained at various concentrations (27 ± 1 °C) showed that the adsorption pattern on the Resins have followed Langmuir isotherms and the calculated maximum sorption capacities of D301, D314 and D354 were 152.52, 120.48 and 156.25 mg/g, respectively. The thermodynamic parameters (free energy change Δ G , enthalpy change Δ S and entropy change Δ H ) for the sorption have been evaluated. It was also found that the adsorption of chromium on these Anion-Exchange Resins follows first-order reversible kinetics.
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removal of hexavalent chromium from aqueous solutions by d301 d314 and d354 Anion Exchange Resins
Journal of Hazardous Materials, 2009Co-Authors: Taihong Shi, Zhuochao Wang, Yang Liu, Shiguo Jia, Du ChangmingAbstract:Removal of hexavalent chromium from electroplating industry wastewater is obligatory in order to avoid pollution. Batch shaking experiments were carried out to evaluate the adsorption capacity of Resins (D301, D314 and D354) in the removal of chromium from aqueous solutions. Varying experimental conditions were studied, including Cr(6+) concentrations, resin amounts, initial pH, contact time and temperatures. The ion-Exchange process, which is pH-dependent, indicated the maximum removal of Cr(6+) in the pH range of 1-5 for an initial concentration 100 ppm of Cr(6+). It was found that more than 99.4% of the removal was achieved under optimal conditions. High adsorption rates of chromium for the three Resins were observed at the onset, and then plateau values were gradually reached within 30 min. The experimental results obtained at various concentrations (27+/-1 degrees C) showed that the adsorption pattern on the Resins have followed Langmuir isotherms and the calculated maximum sorption capacities of D301, D314 and D354 were 152.52, 120.48 and 156.25mg/g, respectively. The thermodynamic parameters (free energy change DeltaG, enthalpy change DeltaS and entropy change DeltaH) for the sorption have been evaluated. It was also found that the adsorption of chromium on these Anion-Exchange Resins follows first-order reversible kinetics.
Herve Gallard - One of the best experts on this subject based on the ideXlab platform.
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combination of coagulation and ion Exchange for the reduction of uf fouling properties of a high doc content surface water
Water Research, 2007Co-Authors: Hugues Humbert, Herve Gallard, Valerie Jacquemet, Jeanphilippe CroueAbstract:Abstract The treatment of a high DOC content surface water (about 6 mg DOC/L) using Anion Exchange Resins (MIEX ® resin from Orica or IRA958 ® resin from Rohm and Haas) can remove up to 80% of DOC in less than 45 min. The combination of coagulation prior to or after resin treatment only slightly improves the removal of DOC (0.2–0.3 mg/L) but eliminates the high MW organic compounds (MW >20 kDa) attributed to biopolymers (proteins and polysaccharides) that were not removed using Anion Exchange Resins alone and that were found to be responsible for reversible fouling of UF membranes (YM 100 UF membrane from Millipore with MW cut-off of 100 kDa). The combination of treatments then significantly improves the permeability of the UF membrane. Also, the combination of both treatments allows a reduction of the coagulant doses by a factor of 6 with no impact on the DOC removal and the filterability of produced waters.
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performance of selected Anion Exchange Resins for the treatment of a high doc content surface water
Water Research, 2005Co-Authors: Hugues Humbert, Herve Gallard, Herve Suty, Jeanphilippe CroueAbstract:Abstract The objective of this study was first to compare the performance of four strong Anion Exchange Resins (AERs) (MIEX ® from Orica Pty Ltd, DOWEX-11 ® and DOWEX-MSA ® from DOW chemical and IRA-938 ® from Rohm and Haas) for their application in drinking water treatment (natural organic matter (NOM), mineral Anions (nitrate, sulfate and bromide) and pesticide removal) using bench-scale experimental procedures on a high DOC content surface water. The efficiency of MIEX ® for NOM and mineral Anions removal was furthermore evaluated using bench-scale dose-response experiments on raw, clarified and post-ozonated waters. NOM removal was assessed using the measurement of dissolved organic carbon (DOC), UV absorbance at 254 nm (UV 254 ) and the use of high-performance size exclusion chromatography with UV (HPSEC/UV) and fluorescence detection (HPSEC/FLUO). The MIEX ® and IRA938 ® Anionic Resins exhibit a faster removal of NOM and mineral Anions compared to the DOWEX11 ® and MSA ® AERs. All the Resins were found to be very effective with similar performances after 30 to 45 min of contact time. As expected, only limited sorption of atrazine and isoproturon ( C 0 =1 μg/L) occurred with MIEX ® , DOWEX11 ® and MSA ® AERs. MIEX ® resin proved to be very efficient in eliminating NOM of high-molecular weight but also a large part of the smallest UV absorbing organic compounds which were refractory to coagulation/flocculation treatment. Remaining DOC levels after 30 min of contact with MIEX ® were found similar in raw water, clarified water and even post-ozonated water implying no DOC benefit can be gained by employing conventional treatment prior to MIEX ® treatment. Removal of bromide (initial concentration 110 μg/L) was also observed and ranged from 30% to 65% for resin dose increasing from 2 to 8 mL/L.