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To find an effective method for uranium(VI) adsorption, uranium(VI) ion-imprinted chitosan composite magnetic microsphers (U(VI)-ICCMM) were synthesized using uranium(VI) as template, chitosan as functional monomer, epichlorohydrin and glutaraldehyde as crosslinking agents. Magnetic chitosan microsphers (MCM) were synthesized without U(VI) ion-imprinted as control. Experiments were conducted in a...
The adsorption of lead by soils is strongly influenced by temperature and various soil characteristics. Soil pH is one of the most important parameters influencing lead-solution and soil-surface chemistry since it affects lead speciation and the charge of soil surface groups. In general, lead adsorption is small at low pH values, and it increases with the increase in soil pH. Some investigations supported...
The present study was conducted to investigate the heavy metals (HMS) removal from aqueous solutions in Complex ecosystem filter (CEF) with vermiculite substrate. Experimental results showed that the CEF was highly effectively in removal of HMS and the average removal rates of Cu2+, Zn2+, Pb2+ and Cd2+ were 81.60%, 80.55%, 83.20% and 62.21% respectively, under the hydraulic loading of 2.0m3/m2.d....
Adsorption of as-produced and purified multiwalled carbon nanotubes (MWNTs) to heavy metal using Cu(II) as a model was investigated and characterized by many techniques. The results show that the oxygenous functional groups can be formed on MWNTs after MWNTs were purified. The oxygenous functional groups play an important role in Cu(II) adsorption to form chemical complex adsorption. The adsorption...
A by-product oil shale ash from Huadian was treated with 5 mol/L nitric acid in order to enhance its adsorption capacity. The acid-treated oil shale ash was used as a low cost adsorbent to remove of cadmium from aqueous solutions. The adsorption capacity of samples to remove of cadmium was evaluated by a series of experiments, and the test results indicated that the adsorption capacity was found to...
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