Grafting of High α-Cellulose Pulp Extracted from Sunflower Stalks for Removal of Hg (II) from Aqueous Solution

Biosorption of Pb2+ from aqueous solutions by Moringa oleifera bark: Equilibrium and kinetic studies

“…Usage of large quantities of wastes generated from processing of agricultural products, food, and/or wood is an attractive option for developing the biosorbents to treat polluted water. As a result, several researchers have made significant contributions in this area, utilizing a number of agro-based materials such as rice husk ash [11], sugar beet pulp [12], babool bark [13], modified sugar beet pulp [14], modified sunflower stalk [15], modified cotton [16], and pinus pinaster bark [17]. In some of these studies biosorbents used for lead removal were developed by manipulating the natural materials by chemically introducing the binding sites to improve the metal removal efficiency, which invariably increases the cost of the biosorbent, bringing it closer to the domain of man-made resins used for Pb 2+ removal.…”

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

“…More recently, great effort has been contributed to develop new adsorbents and improve existing adsorbents. Many investigators have studied the feasibility of using low-cost agro-based waste materials [21][22][23][24][25][26][27][28][29].…”

Removal of arsenic from drinking water using rice husk

“…One of the cost effective and highly efficient sources for adsorption technology is waste of agriculture (Roya et al 2013). Studies reveal that a variety of agricultural waste materials such as wheat bran, wheat husk (Roya et al 2013), bark of the trees, coconut shells, ground net shell, walnut shells, tea waste (Dhiraj et al 2008), coffee beans (Boonamnuayvitaya et al 2004), maize corn cob (Sekhula et al 2012), sugar cane bagasse, apple, banana, orange peels (Annadurai et al 2003), soya bean hulls, sugar beet pulp, sunflower stalks (Hashem et al 2007), cotton stalks, etc. have been tried to remove metal ions either in their natural form or after some physical or chemical modification (Dinesh et al 2007).…”