Battery industry waste has been investigated for the removal of some metal ions (Pb, Cu, Cr and Zn) from aqueous solution by Bhatnagar et al. and an appreciable sorption potential (33–64 mg/g) of the prepared adsorbent was observed for the metal ions. The adsorption characteristics of basic yellow 28 (BY 28) and basic red 46 (BR 46) onto boron waste (BW), a waste produced from boron processing plant were investigated. Kinetic studies indicated that the kinetics of the adsorption of BY 28 and BR 46 onto BW followed a pseudo-second-order model. The maximum adsorption capacities for BY 28 and BR 46 are reported as 75.00
and 74.73 mg/g, respectively. The dye adsorption was found to be dependent on the initial pH of the solution with maximum uptake occurring at about pH 9. A comparison of various low-cost adsorbents derived from industrial and municipal wastes for the removal of diverse types of aquatic pollutants is summarized in Tables 2 and 3 respectively.