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Thanaporn Wannachod,Natchanun Leepipatpiboon,Ura Pancharoen,Kasidit Nootong 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
The separation of Nd(III) from lanthanide series via hollow fiber supported liquid membrane (HFSLM)using synergistic extractant was investigated. Optimum extraction and stripping obtained were 94.5%and 85.1% using D2EHPA and TOPO mixtures (0.5:0.5 M/M) as the synergistic extractant. Reaction orderfor both extraction and stripping were first-order with rate constants of 1.444 and 1.338 min1,respectively. The experimental results were used to correlate with the models. Results showed that theconcentration of Nd(III) from the experiment fitted in well with the model results. The average deviationwas 1.95% and 2.18% for predictions in both feed and stripping sides, respectively.
Krirkratthawit Wongkaew,Niti Sunsandee,Ura Pancharoen,Kasidit Nootong,Prakorn Ramakul 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.22 No.-
Purification of Sn(IV) and recovery of Pd(II) from flexible printed circuit board (FPCB) industrywastewater via HFSLM has been presented. This work examined the influence of extractantconcentration in the liquid membrane, HCl concentration, and flow rates of feed and strippingsolutions. The thermodynamic properties were also investigated. The results showed that percentage ofrecovery of Pd(II) was 100% and purify 84% of Sn(IV) remaining in the feed solution. The Sn(IV) and Pd(II)kinetic reaction orders approached 1.0 and the reaction rate constants were read at 0.00301 and0.08509 min 1, respectively. The experimental results were agreed with the mathematical model.
Natthapol Traiwongsa,Sira Suren,Ura Pancharoen,Kasidit Nootong,Kreangkrai Maneeintr,Wikorn Punyain,Anchaleeporn W. Lothongkum 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.117 No.-
This work focuses on the separation of mercury ions from synthetic produced wastewater via hollowfiber supported liquid membrane (HFSLM). Standard sunflower oil is used as a non-toxic extractantand solvent for mercury ions separation from wastewater. Under optimal conditions: 20 ppm NaCl inwastewater, 0.1 M thiourea in 0.5 M HCl as stripping solution, flow rates of feed and stripping solutionsof 100 mL/min, and temperature 323 K, percentages of extraction and stripping reach 98% and 81%,respectively. The mechanisms of extraction and stripping reactions were investigated via the densityfunctional theory (DFT). For the extraction, a linoleic acid extracted HgCl2 and formed halogen bond. For the stripping, two protonated thiourea stripped HgCl2 and formed covalent and halogen bonds. According to the thermodynamics study, extraction reaction is found to be endothermic (DH0Ex = 1,001. 00 J/mol), irreversible (DS0Ex = 3.45 J/mol K), and spontaneous, (DG0Ex@323 K = 112.65 J/mol). Finally, themathematical model including conservation, convection, diffusion, reaction, and accumulation wasdeveloped. The differences of mercury ions concentration in feed and stripping phases from the experimentsand the predicted data from the mathematical model were 5% and 2%, respectively indicating thatthe model is acceptable.
Thanaporn Wannachod,Vanee Mohdee,Sira Suren,Prakorn Ramakul,Ura Pancharoen,Kasidit Nootong 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.26 No.-
The separation of Nd(III) via hollow fiber supported liquid membrane (HFSLM) and mass transfer analysis was studied. At pH of 4.5, 0.5 M DNPPA as extractant, 3 M H2SO4 as stripping solution, flow rates of feed and stripping solutions of 100 mL/min and temperature of feed and stripping solutions of 313 K. Optimum extraction and stripping reached 98% and 95%. The mass transfer due to chemical reaction is the mass transfer—controlling step. The experiment data fitted in well with the mass transfer model. The average deviation in the feed side was below 2%.
Teerapon Pirom,Niti Sunsandee,Prakorn Ramakul,Ura Pancharoen,Kasidit Nootong,Natchanun Leepipatpiboon 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.23 No.-
The separation experiments of amoxicillin via hollow fiber supported liquid membrane (HFSLM) were performed under various operating conditions to find the optimal parameters i.e. pH, feed concentration, carrier concentration, and flow rates of feed and stripping solution. Percentages of extraction and recovery of amoxicillin from the feed phase reached 85.21% and 80.34%, respectively. The aqueous-phase mass transfer coefficient (kf) and organic-phase mass transfer coefficient (km) were reported to be 3.57 102 and 0.70 102 cm/s, respectively. Furthermore, a mathematical model was developed to predict the concentration of amoxicillin at different times. The results showed promising agreement with experimental data.