Simple and high-sensitivity colorimetric analysis of cadmium using homogeneous liquid–liquid extraction

Manaka, Atsushi; Ueno, Yumemi; Tafu, Masamoto; Kato, Takeshi

doi:10.2116/analsci.21n029

Cited by 6 publications

(1 citation statement)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, it is necessary to develop effective and low-cost methods for removing metals from wastewater before disposal. There are various methods for removing metal ions from wastewater, such as liquid–liquid extraction 12 – 14 , adsorption 15 , 16 , ion exchange 17 , electrodialysis 18 , 19 , and membrane processes 2 , 20 – 22 .…”

Section: Introductionmentioning

confidence: 99%

A simulation study of an electro-membrane extraction for enhancement of the ion transport via tailoring the electrostatic properties

Monesi

Khatibi

Rahbar-Kelishami

2022

Sci Rep

View full text Add to dashboard Cite

Membrane technology with advantages such as reduced energy consumption due to no phase change, low volume and high mass transfer, high separation efficiency for solution solutions, straightforward design of membranes, and ease of use on industrial scales are different from other separation methods. There are various methods such as liquid–liquid extraction, adsorption, precipitation, and membrane processes to separate contaminants from an aqueous solution. The liquid membrane technique provides a practical and straightforward separation method for metal ions as an advanced solvent extraction technique. Stabilized liquid membranes require less solvent consumption, lower cost, and more effortless mass transfer due to their thinner thickness than other liquid membrane techniques. The influence of the electrostatic properties, derived from the electrical field, on the ionic transport rate and extraction recovery, in flat sheet supported liquid membrane (FSLM) and electro flat sheet supported liquid membrane (EFSLM) were numerically investigated. Both FSLM and EFSLM modes of operation, in terms of implementing electrostatic, were considered. Through adopting a numerical approach, Poisson-Nernst-Planck, and Navier–Stokes equations were solved at unsteady-state conditions by considering different values of permittivity, diffusivity, and viscosity for the presence of electrical force and stirrer, respectively. The most important result of this study is that under similar conditions, by increasing the applied voltage, the extraction recovery increased. For instance, at EFSLM mode, by increasing the applied voltage from $$10 $$ 10 to $$30 {\text{V}}$$ 30 V , the extraction recovery increased from $$53$$ 53 to $$98\%$$ 98 % . Furthermore, it was also observed that the presence of nanoparticles has significant effects on the performance of the SLM system.

show abstract