Arsenic leachability in water treatment adsorbents was studied using batch leaching tests, surface complexation modeling and extended X-ray absorption fine structure (EXAFS) spectroscopy. Spent adsorbents were collected from five pilot-scale filters that were tested for removal of arsenic from groundwater in Southern New Jersey. The spent media included granular ferric hydroxide (GFH), granular...

Column and thin-layer chromatographic systems employing silver nitrate-impregnated adsorbents are described for the separation of sterol acetates which differ in the number of double bonds in the steroid nucleus or side chain.

Hydrophobic interaction chromatography (HIC) is a valuable tool used in protein purification applications. HIC is used in the purification of proteins over a broad range of scales-in both analytical and preparatory scale applications. HIC is used to remove various impurities that may be present in the solution, including undesirable product-related impurities. In particular, HIC is often employ...

The low cost adsorbents namely Rice Husk Carbon (RHC), Wheat Straw Carbon (WSC) and Saw Dust Carbon (SDC) have been tested for the effectiveness in decolourisation of wastewater containing a mixture of dyes. Three dyes namely crystal violet, direct orange and magenta have been used for imparting colour in the representative samples of wastewater. Effect of various parameters such as agitation t...

The industrial significance of adsorption phenomenon and some i mportant aspects of the adsorption technqiue are discussed. A brief i ntroduction on some fundamentals of adsorption and a modern theory which is based on the concept of excess surface work is included. Some noble adsorbents, which are significant from industrial poitn of view, are reported. Some important spectroscopic techniques ...

Activated carbons are universal adsorbents that can be obtained from a wide variety of raw materials, and have been found to be very effective for mercury removal from water. This contribution presents a comparative adsorption in column study of activated carbons obtained by physical activation of carbonized eucalyptus wood with water vapour, as adsorbents of mercury in liquid phase. Two sampl...

The adsorption behavior of p-aminobenzoic acid and o-aminobenzoic acid onto the different polymeric adsorbents was systematically investigated as a function of the solution concentration and temperature. Experimental results indicated that the equilibrium adsorption data of the four polymeric adsorbents fitted well in the Freundlich isotherm. The adsorption capacity of multi-functional polymeri...

Clark, D. G. (1970). Brit. J. industr. Med., 27, 186-188. Inhibition of the absorption of paraquat from the gastrointestinal tract by adsorbents. The efficacy of the oral administration of adsorbents Kaolin, Decalso, Amberlite, Bentonite and Fuller's Earth in preventing the toxic actions ofingested paraquat (1,1'-dimethyl-4,4'-dipyridylium) has been assessed using rats and cats. Only Bentonite ...

A series of polyethyleneimine (PEI) incorporated MIL-101 adsorbents with different PEI loadings were reported for the first time in the present work. Although the surface area and pore volume of MIL-101 decreased significantly after loading PEI, all the resulting composites exhibited dramatically enhanced CO2 adsorption capacity at low pressures. At 100 wt% PEI loading, the CO2 adsorption capac...

Mesoporous materials can be generally used as adsorbents to remove impurities from gases. During the past few years, H2S has been removed from natural gas using materials such as dolomite, zeolites, and industrial compounds, which can be widely used by oil and natural gas companies. The present study focused on the use of Zeolite 13X and Zinox 380 as H2S adsorbent at 25 C. They were characteriz...