Color removal of monoazo acid dye from aqueous solution by adsorption and chemical coagulation

The importance of almond (Prunus amygdalus L.) and its by-products

“…In order to minimise the risk of pollution problems from such effluents, it is necessary to properly treat them before discharging them to the environment. Substantial attempts have been made by many researchers to find suitable treatment systems in order to treat wastes discharged from different industries, in particular the textile industry (Georgiou et al, 2002;Gokmen & Serpen, 2002;Neamtu et al, 2004;Ramakrishna & Viraraghavan, 1997;Tsui et al, 2003;Venkata Mohan, Sailaja, Srimurali, & Karthikeyan, 1999). A wide range of chemical and physical procedures of dyes removal from aqueous solutions is based on the decolourisation by photocatalytic degradation (Chun & Yizhong, 1999;Hachem, Bocquillon, Zahraa, & Bouchy, 2001;Mahmoodi et al, 2005), membranes (Wu, Eiteman, & Law, 1998), microbiological decomposition (Pearce, Lloyd, & Guthrie, 2003), electrochemical oxidation of dye (Vlyssides, Loizidou, Karlis, Zorpas, & Papaioannou, 1999) and adsorption techniques (Aksu, 2005;Annadurai, Juang, & Lee, 2002;Atun, Hisarli, Sheldrich, & Muhler, 2003;Chakraborty, De, DasGupta, & Basu, 2005;Gong et al, 2005;Mohan, Singh, Singh, & Kumar, 2002).…”

Adsorption of Direct Red 80 dye from aqueous solution onto almond shells: Effect of pH, initial concentration and shell type

“…Different agitation rates ranging from 30 to 200 rpm had no significant change on adsorption process. The changes of absorbance were determined at certain time intervals (2,4,6,8,10,20,30,60, 120, 180, 240 and 300 min) during the adsorption process. After adsorption experiments, the sorbent were separated from the solution by Hettich EBA20 centrifuge and dye concentration was then determined.…”

“…In order to minimise the risk of pollution problems from such effluents, it is necessary to accurately treat them before discharging to the environment. Substantial attempts have been made by many researchers to find suitable treatment systems in order to treat wastes discharged from different industries in particular textile industry [1,2,[4][5][6][7][8][9][10][11][12].…”

Comparative study on nano-crystalline titanium dioxide catalyzed photocatalytic degradation of aromatic carboxylic acids in aqueous medium

“…The most commonly used methods are adsorption techniques using activated carbon based adsorbents, organocalys, etc. [1][2][3][4][5], electrochemical method [6], microbiological decomposition [7] and chemical coagulation [8]. The adsorption process is cost effective method for waste water treatment, but the process only concentrate the contaminant from water onto a solid substrate causing secondary pollution problem [9].…”