OBJECTIVES A new desorption method was investigated, which does not require toxic organic solvents. Efficient desorption of organic solvents from activated carbon was achieved with an ananionic surfactant solution, focusing on its washing and emulsion action. METHODS Isopropyl alcohol (IPA) and methyl ethyl ketone (MEK) were used as test solvents. Lauryl benzene sulfonic acid sodium salt (LAS...

Diafiltration is term used reflecting tangential flow filtration (TFF) method of “washing” or removing a permeable molecule (impurities, salts, solvents, small proteins, etc) from a solution in an accelerated method when compared to dialysis tubing. By selecting the appropriate membrane(s), it can also be used to exchange buffers, narrow particle size distributions, modify salt concentrations o...

Spermidine is a naturally occurring polyamine which regulate growth processes in living beings. Using solid phase synthetic strategy spermidine was synthesised. The only purification process involved throughout the synthesis is filtration and washing with suitable solvents. Spermidine was first synthesised over polystyrene support and then cleaved from matrix photolytically. The yield and purit...

In this work a lipopeptide biosurfactant, obtained from an agro industrial residue, was used as washing agent to remove fluorene from soil. Soil extraction carried out with biosurfactants is more environmental friendly tan those extraction based on volatile solvents or chemical surfactants. Thus, in order to find the best operational conditions, the effect of soil loading and pH during batch so...

The washing of filter cakes, especially the displacement washing, represents an important aspect in science researches and industrial applications. A lot of ongoing researches are focussed on impurities, which are dissolved in the mother liquid (e.g. sodium chloride) and washed out with the identical pure liquid without impurities. The project flushing focuses on systems with two chemically dif...

In classical protein staining protocols using Coomassie Brilliant Blue (CBB), solutions with high contents of toxic and flammable organic solvents (Methanol, Ethanol or 2-Propanol) and acetic acid are used for fixation, staining and destaining of proteins in a gel after SDS-PAGE. To speed up the procedure, heating the staining solution in the microwave oven for a short time is frequently used. ...

alcohol poisoning can result in metabolic acidosis, renal failure, blindness, central nervous system (CNS) injury, pulmonary edema, or death. Ethylene glycol is present in antifreeze solutions, deicing solutions, foam stabilizers, and chemical solvents. Methanol is a component of windshield-washing solutions, gas-line antifreeze solutions, solvents, and brake cleaners. Isopropanol is found in r...

A reliable and sensitive analytical method was developed for simultaneous determination of deoxynivalenol(DON), 3-acetyldeoxynivalenol (3-ADON), 15-acetyldeoxynivalenol (15-ADON), fusarenon X (FUS-X), and masked deoxynivalenol (deoxynivalenol-3-glucoside, D3G) in formula feed, concentrated feed, and premixed feed products. The method was based on an improved sample pretreatment with the commerc...