Adsorption of mercury from aqueous solutions by polyethylenimine modified wool fibers

Heavy metal adsorption onto agro-based waste materials: A review

“…Sawamiappan and Krishnamoorthy [139] replaced phenol-formaldehyde cationic matrices with sulfonated bagasse. Freeland et al [140] used polyethylenimine-modified wood to adsorb mercury. Snyder and Vigo [141] modified cotton ethylenediamine with chlorodeoxycellulose to remove mercury.…”

Studies on efficiency of guava (Psidium guajava) bark as bioadsorbent for removal of Hg (II) from aqueous solutions

“…The main focus is on the use of various industrial wastes, agricultural byproducts and biological materials as adsorbents studied by Low et al [11], Orhan and Buyukgungar [12], Tiwari et al [13]. Natural materials that are available in large quantities or certain waste from agricultural operations could be potential low-cost adsorbents, as they represent unused resources reported by Raji and Anirudhan [14], Muhammad et al [15], Freeland et al [16]. As demonstrated by Flynn et al [17], Friedman and Waiss [18], Deshkar et al [19] adsorption onto low-cost adsorbents, such as bark powder now offers an attractive and inexpensive option for removal of mercury.…”

Low-Cost Sorbents: A Literature Summary.

“…Rapid adsorption is especially important in the case of column operation. Freeland, Hoskinson, and Mayfield (1974) studied wool modified with polethylenimine for mercury adsorption. A capacity of 330.97 mg Hg/g was achieved for the PEl-wool.…”