Relative Metal Ion Sorption on Natural and Engineered Sorbents: Batch and Column Studies

Adsorption Behaviour of La(III) and Eu(III) Ions from Aqueous Solutions by Hydroxyapatite: Kinetic, Isotherm, and Thermodynamic Studies

“…e concentration of the polluting agents in the effluents has increased considerably due to its excessive use in the industrial and nuclear processes and to their unloading without previous treatment [1][2][3]. erefore, the water contamination by chemical substances, of high toxicity degree for living beings, such as arsenic, barium, cadmium, cyanide, cobalt, cuprum, chromium, and rare earth elements (REEs) has been a problem of special interest in the environmental area during the past few years.…”

Phosphorus removal from aqueous solution using iron coated natural and engineered sorbents

“…The later method would be comparatively more useful and economical than the others for this aim. Therefore, in recent years considerable attention has been paid, based on economical and environmental concerns, to the investigation of different types of low-cost sorbents, such as alum sludge [3], red mud [4][5][6], fly ash [7,8], calcite [9], goetite [10], birnesite [11], apatite [12], zeolite (clinoptilolite) [13] and other waste materials [14,15].…”

Effect of quaternary ammonium cation loading and pH on heavy metal sorption to Ca bentonite and two organobentonites

“…Yoo et al [24] reported that sorption of Cd to HDTMA bentonite and conventional bentonite was similar, suggesting that QAC treatment of bentonite does not adversely impact metal sorption. Most recently, Tillman et al [25,26] studied the removal of heavy metals by column-flow and batch systems containing organoclays and several other proprietary sorbents. They observed that the organoclays were able to sorb significant quantities of metals, but their investigation provided little mechanistic interpretation of the sorption mechanism.…”