Synthesis of functional poly(amidoamine) dendrimer decorated apple residue cellulose for efficient removal of aqueous Hg(II)

Synthesis of Aminomethylpyridine-Decorated Polyamidoamine Dendrimer/Apple Residue for the Efficient Capture of Cd(II)

“…Cd(II) is prone to hydrolyze when the solution pH is higher than 6. 19 Hence, the following experiments were carried out at pH 6. The adsorption capacities of AP-1.0-AMP and AP-2.0-AMP can reach 0.31 and 0.33 mmol•g −1 at 50 min, accounting for 91.18 and 91.67% of the total adsorbed amount.…”

“…The reduction of the adsorption is mainly attributed to the competition of interfering metal ions with Cd(II), which would occupy part of the adsorption sites. 19 Adsorption Performance in a Real Water Solution. The adsorption behavior of the biosorbents for Cd(II) in a real water solution was determined by selecting tap, lake, and sea waters as illustrated in Figure 7(b).…”

“…Apple residue was acquired from Yantai Andre Juice Co. Ltd. (China) and extracted with a mixture of methanol and toluene (1:1) for 4 h before utilization. 19 Epichlorohydrin (EPI), 2-aminomethylpyridine (AMP), ethylenediamine (EDA), methyl acrylate (MA), K 2 CO 3 , and other regents were supplied by Sinopharm Chemical Reagent Co. Ltd (China). The detailed characterization methods are described in the Supporting Information (SI).…”

“…Apple residue contains substantial amounts of cellulose and lignin, which can provide plenty of hydroxyl groups for binding metal ions . However, the adsorption capacity of unmodified apple residue is relatively low and cannot satisfy practical uses . Hence, the promotion of the adsorption capacity is a great challenge for the application of apple residue.…”

“…18 However, the adsorption capacity of unmodified apple residue is relatively low and cannot satisfy practical uses. 19 Hence, the promotion of the adsorption capacity is a great challenge for the application of apple residue.…”