Development of polymeric and polymer-based hybrid adsorbents for pollutants removal from waters

Paper-like composites of cellulose acetate–organo-montmorillonite for removal of hazardous anionic dye in water

“…Nevertheless, the 0 0 1 reflection was able to be clearly detected for all CA/OMMT composite, indicating that the substantial exfoliation of the OMMT layers did not occur when they interacted with CA molecules [36,37]. Provided that the platelets of OMMT in the resulting composites were present in a thorough exfoliated form, the 0 0 1 reflection of the MMT clay mineral would completely disappear in the XRD patterns [30,38]. However, when the concentration of OMMT used during preparation was Intensity [a.u.]…”

“…Nevertheless, the clay minerals were used as fillers for those composites and the quantity of clay minerals in them was usually less than 5 wt.% [29]. Therefore, those composites are not suitable to be used as adsorbents because of the lack of adsorptive properties [30]. It is still desired to produce a kind of composites which not only have proper adsorption capacity but also can be easily handled in wastewater treatment.…”

Preparation of Anion Exchange Resin Loaded with Ferric Oxide for Arsenic (V) Removal from Aqueous Solution

“…In recent years, polymeric-based ferric oxide adsorbents have become more attractive for the environmental remediation. These materials combined the advantages of both excellent mechanical properties of polymeric ion exchange and the specific affinity of ferric oxide toward target pollutant [5]. Previous studies have shown that fabrication of these hybrid adsorbents by dispersing or loading of iron oxide onto polymeric ion exchange can provide high efficiency for removal of toxic pollutants, including arsenic, phosphate, selenium, and antimony [6]- [9].…”

Preparation of L-Arginine-Modified Silica-Coated Magnetite Nanoparticles for Au(III) Adsorption

“…Among of the above techniques, adsorption has been widely used since it is proven to be more effective and economical 10 because the design and operation are flexible. The adsorption is a reversible process so that the adsorbent can be regenerated through desorption process for reuse 11 . Efforts to develop the adsorbent containing selective functional groups have been conducted 12,13 , but to recover precious metal ions and removal of heavy metal ion are still challenge.…”