Sorption of organic compounds of varying hydrophobicities from water and industrial wastewater by long- and short-chain organoclays

Measurement of Surface Area of Modified Clays by Ethylene Glycol Monoethyl Ether Method

“…Producing organoclay minerals in practice requires the replacement of the interlayer exchangeable inorganic cations with organic cations through ion-exchange reactions. The resultant organoclay modifies the surface of the original clay mineral from being hydrophilic to being hydrophobic [13,14].…”

Cleaning secondary effluents with organoclays and activated carbon

“…Adsorption experiments with organoclays and PAC Unlike in previous reports 22 only 8% DOC reduction was measured after 1 h mixing with a maximum 1 g L −1 TMA-bentonite (Fig. 2).…”

“…The amount of salt added was equivalent to the cation exchange capacity of 0.8 mol L −1 to kg of bentonite. 21,22 The mixture was continuously stirred for 48 h at a room temperature, and washed with distilled water until no bromide ions were detected. The average concentration of organoclays was 33 g L −1 .…”

“…18 Due to the amplified expression of the end hydrophilic and hydrophobic groups the organoclays are good adsorbents for single pollutants in water 19 -21 and wastewater. 22 In the current research organoclays or PAC were added as powdered adsorbents before UF of secondary effluents. The addition of powdered adsorbents has a few advantages over granular adsorption -the process is easily controlled, the continuous adsorption can last as long as the adsorbent is laid on top of the membrane, membrane fouling is minimized, the membrane surface is protected by the adsorbent layer, etc.…”

The influence of modification methods on physico-chemical and sorption properties of sepiolite

“…sorpcija postaje efikasnija pri višim koncentracijama sorbata. Ovom izotermom može se opisati sorpcija nepolarnih organskih molekula na glinenim mineralima, kao i sorpcija surfaktanata 65,66 .…”