Electrochemical treatment of deproteinated whey wastewater and optimization of treatment conditions with response surface methodology

Optimization and evaluation of CBSOL LE red wool dye adsorption from aqueous solution onto commercial activated carbon

“…The fit quality of second-order polynomial model was expressed by the coefficient of determination R 2 and adjusted R 2 . For optimization, desirability function module of Design Expert 6.0 was utilized, in which individual goals are combined into an overall desirability function for maximization to find the best maximum of response (Guven et al 2008).…”

Anaerobic Sludge Load Impact Load of Organic Substances Contained in the Whey of the Fermentation Kinetics

“…Odpad ten charakteryzuje się wysoką zawartością związków organicznych w tym cukrów, głównie laktozy ok. 5%, białek do 1%, tłuszczy do 0,5%, a także soli mineralnych, głównie NaCl oraz KCl jak również soli wapnia i witamin [6,10]. Przeciętna zawartość związków organicznych w serwatce, w tym BZT 5 wynosi od 40 do 60 g O 2 /dm 3 , podczas gdy średnie BZT 5 ścieków mleczarskich mieści się w granicach od 800 do 2000 mg O 2 /l oraz ChZT w przedziale od 50 do 80 g O 2 /dm 3 [8]. Z uwagi na to serwatka powstająca w zakładach mleczarskich może stanowić poważne zagrożenie dla środowisku, do którego zostanie odprowadzone bez wcześniejszego unieszkodliwienia.…”

Integrated function of microbial fuel cell (MFC) as bio-electrochemical treatment system associated with bioelectricity generation under higher substrate load

“…The enhanced substrate removal efficiency observed at high loading conditions might be attributed to direct anodic oxidation (DAO) mechanism (Guven et al, 2008). DAO of deprotonated substrate might instigate the formation of oxidation species on the anode surface due to manifestation of bio-electrochemical reactions.…”

“…The conventional electrochemical cell runs with external source of power supply, while MFC generates its own power in situ from substrate metabolism and the resulting bio-potential might trigger oxidation process resulting in color reduction. Color removal by electrochemical treatment in MFC may be explained by two mechanisms viz., (a) direct anodic oxidation (DAO) where the pollutants are adsorbed on the anode surface and get destroyed by the anodic electron transfer reactions (Guven et al, 2008); (b) Indirect oxidation mediated by the oxidants formed electrochemically on the anode surface which oxidize the organic matter (Israilides et al, 1997). DAO of substrate facilitates formation of primary oxidants which could further react on the anode yielding secondary oxidants such as chlorine dioxide and ozone (Israilides et al, 1997), which might have significant positive effect on the color removal efficiency through oxidation process.…”