Chromium removal from aqueous solutions using new silica gel conjugates of desferrioxamine or diethylenetriaminepentaacetic acid

2020 ◽  
Vol 27 (13) ◽  
pp. 15635-15644
Author(s):  
Aamir Rasheed ◽  
Alexandrina Aparecida Costa Carvalho ◽  
Gabriel Gustinelli Arantes de Carvalho ◽  
Tahseen Ghous ◽  
Cassiana Seimi Nomura ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Silica Gel ◽  
Chromium Removal ◽  
Diethylenetriaminepentaacetic Acid

scholarly journals Adsorption of Model Dyes on Recycled Silica Gel

Proceedings ◽  
2019 ◽  
Vol 48 (1) ◽  
pp. 10
Author(s):  
Fatima Sbait Wahshi ◽  
Maitha Dhaiman Alqahtani ◽  
Manhal Abdulla ◽  
Tholkappiyan Ramachandran ◽  
Fathalla Hamed ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Silica Gel ◽  
Adsorption Process ◽  
Food Colorants ◽  
Waste Products ◽  
Optimal Procedure ◽  
Biological Stains

Silica gel was used as an adsorbent for dyes in aqueous solutions. Afterwards, the silica gel with the adsorbed dye was heated to 600 °C, at which the dye combusted, leaving behind clean silica gel. This silica gel can be reused in the adsorption process. The operation leaves behind little waste products. It is an optimal procedure for educational and other research laboratories which are working with biological stains, food colorants and some non-commercial dyes.

scholarly journals Recovery of gangliosides from aqueous solutions on styrene-divinylbenzene copolymer columns

2002 ◽  
Vol 43 (8) ◽  
pp. 1335-1340 ◽  
Author(s):  
Iuliana Popa ◽  
Cristina Vlad ◽  
Jacques Bodennec ◽  
Jacques Portoukalian
Keyword(s):  
Aqueous Solutions ◽  
Silica Gel ◽  
Salt Concentration ◽  
High Stability ◽  
Solid Phase ◽  
General Procedure ◽  
Optimal Conditions ◽  
Alkaline Conditions ◽  
Styrene Divinylbenzene ◽  
Multiple Cycles

An investigation was made using a styrene-divinylbenzene copolymer as a solid phase sorbent to recover gangliosides from aqueous solutions. A comparison with octadecyl-bonded (C18) silica gel showed that the general procedure used to purify gangliosides on C18 silica gel could be used with the copolymer. The yield of gangliosides depended on various parameters such as the composition of the conditioning solution, the salt concentration of the loading solution, and the amount of applied gangliosides per gram of copolymer. In optimal conditions, the recovery of gangliosides and other lipids present in the upper phases of partition was higher than 95%. Using radiolabeled gangliosides, it was found that gangliosides present in serum-containing medium could also be quantitatively recovered on copolymer, provided the medium was diluted with an equal volume of methanol prior to its application onto the column.The major advantage of the copolymer is its high stability in acidic or alkaline conditions that allows multiple cycles of cleaning and reconditioning of the sorbent without alteration of its chromatographic properties.

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