Biosorption of bivalent metal ions from aqueous solution by an agricultural waste: Kinetics, thermodynamics and environmental effects

Adsorption characteristics of chemically modified Caryota urens seeds for the removal of Cu(II) from aqueous solution: Isotherms and kinetic studies

“…4). Maximum adsorption capacity of ATCUS towards Cu(II) investigated in the present study was found to be greater than various other adsorbents reported earlier (Table 3) (Rao and Ikram, 2011;Arshadi et al, 2014;Rao and Khan, 2016;Rao and Khan, 2009;Rao and Kashifuddin, 2012). The contact time required to reach equilibrium was found to be dependent on initial Cu(II) concentration.…”

Removal of Cd(II), Pb(II) and Cr(III) from water using modified residues of Anacardium occidentale L.

“…Positive values of entropy (ΔS), as observed for Pb 2+ adsorption by CNS NaOH, and Cr 3+ adsorption by CNS in natura and CNS NaOH (Table 10), suggest a system disorder, probably due to an increase in the disorder of solid-solution interface, indicating randomness on solid-solution interface (Rao and Khan 2009). …”

Control of pollution emitted by foundries

“…This is because induction furnace serves as a cleaner production technology as the pollutants affecting the atmosphere are not emitted in the case of induction furnace. In line with this development, both engineers and managers have been attempting to evolve cleaner production technological devices for controlling the emission of pollutants during the sand preparation, melting and pouring of metals while carrying out foundry practices (Sekhar and mahanti 2006;Strobos and Friend 2004;Huvinena et al 1997;Andres et al 1998;Mirasgedis et al 2008;Rao and Khan 2009;Wu et al 2004;Georgiadis and Kyrtopoulos 1999;Browne et al 1999;Keshava and Ong 1999). Although good amount of time and money has been spent in this direction, the levels of pollutants emitted by the foundries have been crossing the limits stipulated by the environmental laws being promulgated in various countries, this perplexing situation is the case which needs a review of the literature arena for studying the emission control technological devices employed in Foundries, and their capabilities and imperatives are involve highly improved devices.…”