Enhanced heavy metal removal using silver-yttrium oxide nanocomposites as novel adsorbent system

Preparation of NiFe2O4/polythiophene nanocomposite and its enhanced adsorptive uptake of Janus green B and Fuchsin basic from aqueous solution: Isotherm and kinetics studies

“…After equilibrium, there is a slight decrease in uptake of dyes because of the saturation of the available sites for adsorption. Similar, results were obtained by Pradhan et al and Bhatti et al…”

Amino-functionalized graphene oxide for Cr(VI), Cu(II), Pb(II) and Cd(II) removal from industrial wastewater

“…The pseudo-first-order kinetics and pseudo-second-order kinetics models were used to determine the rate constant and controlling mechanism of the adsorption process. The pseudo-first-order kinetic model is generally expressed as follows: (2) where Qe (mg g −1 ) is the amount of heavy metal ions adsorbed at equilibrium, Qt (mg g −1 ) is the amount of adsorption at any time t, and k 1 is the pseudo-first-order rate constant (min −1 ). The plots of −ln(1−F) versus t are depicted in Figure 4B.…”

“…With the rapid industrialization and anthropogenic mishandling, the quantity of toxic heavy metal ions globally emitted into the surroundings has increased, especially in freshwater systems [1]. Heavy metals are released from various industries, especially electroplating, metal smelting and mining industries [2]. Heavy metals, including hexavalent chromium (Cr), divalent copper (Cu), divalent lead (Pb) and divalent cadmium (Cd), can cause many detrimental effects to the ecological environment and pose a serious threat to human health.…”

A unique, inexpensive, and abundantly available adsorbent: composite of synthesized silver nanoparticles (AgNPs) and banana leaves powder (BLP)

“…Clean, safe water resources are in short supply and this crisis is caused by the rapid growth of the world population, global warming, and the natural, rapid decline of water resources. Therefore, the economical use of water resources, the use of treated wastewater for agriculture and industry, and the use of low-cost and environmentally friendly technologies are effective ways to conserve limited freshwater resources and successfully contribute to the world's clean water [ 1 , 2 ]. Heavy metals' presence in water resources is a global problem, as most of them are toxic to organisms, are not biodegradable, and tend to accumulate in biota, compromise the immune system, cause cancer, and threaten life on earth [ 3 ].…”