natural materials as low cost adsorbents for water treatment

natural materials as low cost adsorbents for water treatment
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  • Which adsorbent is used for purification of water and wastewater?
  • A large number of adsorbents such as natural materials, agricultural wastes and residues, industrial byproducts and biomass materials have been used for purification of water and wastewater Bhatnagar et al. (2015), Gupta et al. (2009). 6.1. Lowcost adsorbents Low cost adsorbents can be categorized as shown in Fig. 7(Worch, 2012). Fig. 7.
  • Which waste is used as a low-cost adsorbent for water treatment?
  • Some industrial wastes/by-products that have been applied as low-cost adsorbents for water treatment are waste slurry, areca waste, and liquor waste from the paper industry (Aljerf 2016; A; Tripathi & Rawat Ranjan 2015). Fly ash is another waste/by-product composed of SiO 2, Al 2 O 3, and Fe 2 O 3 of coal firing by a thermal coal plant.
  • What are low-cost adsorbents?
  • Other low-cost adsorbents, such as agricultural wastes, have been also extensively studied. Agricultural materials, particularly those containing cellulose presents potential adsorption ability for various pollutants.
  • Are industrial adsorbents suitable for drinking water treatment?
  • Generally, industrial by-products have exhibited low adsorption efficiencies which makes them less preferable to consider for drinking water treatment in comparison to the other low-cost adsorbents.