Synthesis and characterization of cotton-like Ca–Al–La composite as an adsorbent for fluoride removal

Controllable synthesis of mesoporous alumina with large surface area for high and fast fluoride removal

“…Therefore, it is crucially important to prepare alumina with excellent pore structures. Although researchers have fabricated lots of high efficient metal composites for defluorination recently, such as Fe-Mg-La [12], Ce-Fe [13], Ca-Al-La [14], Al-Zr [15], the preparation processes are always complicated and cost is quite high. Therefore, to prepare and regulate the microstructure of alumina ceramics is still the focus of current research.…”

“…For each initial pH, the14 final pH is also measured after adsorption equilibrium. The results indicate that the optimum pH for fluoride adsorption is 3, and the fluoride removal rate can reach 97.7% under the present conditions.…”

Defluoridation of water by Tea - bag model using La 3+ modified synthetic resin@chitosan biocomposite

“…Yu and Chen [13] reported that the maximum DC of 292.9 mg/g using Mn-La mixed metal composite at minimum contact time of 60 min in 100 mg/L as initial fluoride ion concentration. The cotton like Ca-Al-La composite was prepared by Xiang et al [14] and experienced higher DC of 29.30 mg/g at 50 mg/L as initial fluoride ion concentration. The mechanism of fluoride removal using Ca-AlLa adsorbent was by both electrostatic interaction and ion-exchange mechanism.…”

Rapid and convenient removal of fluoride by magnetic magnesium–aluminum–lanthanum composite: Synthesis, performance and mechanism

“…Multivalent metal hydroxides and oxides, especially which mixing with rare earth metals, have shown results for fluoride removal with great promise. For example, Ce-Fe bimetal oxides, [16] cotton-like Ca-Al-La composite [17] and Fe-Al-Ce trimetal composite. [18] Herein, it is necessary to give a brief introduction to our novel and meaningful work.…”