Mixed solvent systems for recovery of ethanol from dilute aqueous solution by liquid-liquid extraction

1987 ◽  
Vol 30 (3) ◽  
pp. 348-351 ◽  
Author(s):  
R. J. Mitchell ◽  
A. Arrowsmith ◽  
N. Ashton
Keyword(s):  
Aqueous Solution ◽  
Mixed Solvent ◽  
Liquid Extraction ◽  
Liquid Liquid Extraction ◽  
Dilute Aqueous Solution ◽  
Solvent Systems

scholarly journals Solvent Extraction And Spectrophotomteric Determination Of Cu(Ii) With Dicyclohexyl - 18- Crown-6

2013 ◽  
Vol 10 (3) ◽  
pp. 997-1004
Author(s):  
Baghdad Science Journal
Keyword(s):  
Aqueous Solution ◽  
Solvent Extraction ◽  
Correlation Coefficient ◽  
Extraction Efficiency ◽  
Molar Absorptivity ◽  
Liquid Extraction ◽  
Liquid Liquid Extraction ◽  
Coloured Complex

Liquid-Liquid Extraction of Cu(II) ion in aqueous solution by dicyclohexyl-18-crown-6 as extractant in dichloroethane was studied .The extraction efficiency was investigated by a spectrophometric method. The reagent form a coloured complex which has been a quantitatively extracted at pH 6.3. The method obeys Beer`s law over range from (2.5-22.5) ppm with the correlation coefficient of 0.9989. The molar absorptivity the stoichiometry of extracted complex is found to be 1:2. the proposed method is very sensitive and selective.

Beneficiation of Seafloor Massive Sulfides by Liquid-Liquid Extraction

2021 ◽  
pp. 1-35
Author(s):  
Yasuharu Nakajima ◽  
Yuta Yamabe ◽  
Toyohisa Fujita ◽  
Gjergj Dodbiba
Keyword(s):  
Aqueous Solution ◽  
Contact Angle ◽  
High Pressures ◽  
Sulfide Mineral ◽  
Contact Angles ◽  
Liquid Extraction ◽  
Massive Sulfides ◽  
Liquid Liquid Extraction ◽  
Pressure Extraction ◽  
The Difference

Abstract This paper addresses the applicability of liquid-liquid extraction for separating mineral particles by the difference in oil-water partition coefficient, for the seafloor mineral processing of Seafloor Massive Sulfides (SMSs). Measurements of contact angle of sulfide mineral – aqueous solution – oil systems under high-pressure conditions were performed to evaluate the efficiency of liquid-liquid extraction at high pressures. The results showed that the contact angle stayed around 80 - 100° at the pressure range up to 16MPa; and the changes in the contact angles were within 5° with varying pressure. Extraction experiments were carried out by using particles of an SMS ore, which contained Zinc (Zn), Lead (Pb), and Barium (Ba) in the grade of more than 10 mass% and Copper (Cu) in a small percentage, to evaluate the beneficiation performance of liquid-liquid extraction. In the experiments, extraction conditions such as the dosage of chemical reagents, and pH in the aqueous solution were varied to optimize both the recovery and selectivity of Cu, Zn, and Pb in the oil phase, and those of Ba in the water phase. The experimental results showed that the optimum condition was 200 g/t dosage - pH 7, where the grade and recovery were ca. 37 mass% and ca. 90 mass%, respectively. The beneficiation performance of liquid-liquid extraction would be comparable to that of flotation, adapted to the processing of other SMS ores.

Liquid–Liquid Extraction of Biobased Isobutanol from an Aqueous Solution

2019 ◽  
Vol 64 (6) ◽  
pp. 2350-2356 ◽  
Author(s):  
Conghua Yi ◽  
Wenli Song ◽  
Yulei Zhang ◽  
Xueqing Qiu
Keyword(s):  
Aqueous Solution ◽  
Liquid Extraction ◽  
Liquid Liquid Extraction

New nitrogen-donor pyrazole ligands for excellent liquid–liquid extraction of Fe2+ ions from aqueous solution, with theoretical study

2013 ◽  
Vol 41 (6) ◽  
pp. 3319-3334 ◽  
Author(s):  
Mohamed Khoutoul ◽  
Farid Abrigach ◽  
Abdelkader Zarrouk ◽  
Nour-Eddine Benchat ◽  
Morad Lamsayah ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Theoretical Study ◽  
Liquid Extraction ◽  
Liquid Liquid Extraction ◽  
Nitrogen Donor ◽  
Pyrazole Ligands

A New Method for the Synthesis of N, N-Diethyl-m-Methylbenzamide from m-Toluic Acid and Diethylamine Using 1,1'-Carbonyl-di-(1,2,4-triazole) (CDT) as Coupling Agent

2021 ◽  
Vol 18 ◽  
Author(s):  
Duc Thinh Pham ◽  
Van Thu Nguyen ◽  
Binh Duong Vu ◽  
Dinh Chau Phan
Keyword(s):  
Aqueous Solution ◽  
High Purity ◽  
Coupling Agent ◽  
Liquid Extraction ◽  
Water Soluble ◽  
New Method ◽  
Simple Method ◽  
Basic Principles ◽  
Liquid Liquid Extraction ◽  
By Products

: A new, simple method for the synthesis of N, N-dietyl-m-methylbenzamide (DEET) from m-toluic acid and diethylamine using 1,1'-carbonyl-di-(1,2,4-triazole) (CDT) as a coupling agent has been performed. The basic principles of activated carbonyls have been explored with the ability to prepare new amides easily. All reaction by-products are water-soluble as well as removed by filtration, the reaction could be purified easily in an aqueous solution by liquid-liquid extraction, and the product DEET was high purity. This experimental efficiency is about 94-95%, purity (HPLC): 97-98%.

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