Mechanistic understanding of tetracycline sorption on waste tire powder and its chars as affected by Cu2+ and pH

Preparation of amino-Fe(III) functionalized mesoporous silica for synergistic adsorption of tetracycline and copper

“…Furthermore, the complex of TC-Cu(II) may have stronger affinity to the adsorbent than TC and Cu(II) separately. A similar observation was reported on the adsorption of TC on waste tire powder and montmorillonite (Lian et al, 2013;Wang et al, 2008).…”

“…The adsorption amount of TC was significantly enhanced with the increasing concentration of Cu(II). The same phenomena was reported for the adsorption of TC onto chelating resin and tire powder (Lian et al, 2013;Ling et al, 2013). Lian et al confirmed that TC and Cu(II) facilitated the sorption of one another on tire powder through the formation of TC-Cu(II) complexes.…”

“…S3). With pH increasing from 3.0 to 5.5, the percentage of the neutral form (H 2 L) increased and the amino group on TC was more easily complexed with Fe(III) on the adsorbent due to the electrostatic attractions, which increased the amount of adsorption (Lian et al, 2013). With the pH further increasing, the percentage of anionic form (HL À , L 2À ) increased, which inhibits the adsorption of TC on Fe-N,N-SBA15 due to the electrostatic repulsion.…”

“…Antibiotics can combine with heavy metals strongly and produce complex species, which makes the behaviors of both compounds more complicated. Furthermore, growing evidence suggests that the toxicity of complex species is generally larger than their individual toxicity (Lian et al, 2013). Consequently, the need for effective elimination methods for antibiotics and heavy metals pollution from aqueous solution has attracted increasing concern.…”

Adsorption of phenol and methylene blue from aqueous solutions by pyrolytic tire char: Equilibrium and kinetic studies

“…tire rubbers consist mainly of synthetic 9 and natural rubber, tire rubber additives i.e., carbon black, sulfur 10 and zinc oxide [1,3]. A feasible solution for an environmentally 11 friendly treatment of waste tires would be to recycle them to 12 valuable products that can be used in various applications. 13 Pyrolysis is an established process, which involves thermal 14 decomposition of waste tires at high temperatures (450-900 C) 15 under oxygen-free atmosphere, transforming them into useful 16 products [5,13].…”