Adsorption of 1, 2-Benzanthracene from Aqueous Solution by DNA-Conjugated Magnetic Nanoparticles

Common carp sperm chromatin as an economical and effective remover for benzo(a)pyrene from pollutants

“…Therefore, in this experiment, the optimum condition for the reaction was chosen to be pH 7.4. pH of solution changes the distribution of charge on the adsorbent surface, which in turn affects the adsorption performance of the adsorbent. When chromatin was used as an adsorbent for the treatment of BaP, the DNA was positively charged in the acidic solution and negatively charged in the basic solution [ 14 ]. The DNA in the chromatin is the active ingredient of the adsorbent, so changing the pH of the solution will have an effect on the adsorption.…”

“…A detailed and accurate description of the processes and mechanisms involved in adsorption reactions is very important. Here we have used the nonlinear pseudo-first-order adsorption kinetic equation (1) and the nonlinear pseudo-second-order adsorption kinetic equation (2) for the relevant fitting illustrations [ 14 ]. where t (min) represents the adsorption time and q t (mg·g −1 ) corresponds to the amount of BaP adsorbed per unit mass of the chromatin when the adsorption time is t. q e (mg·g −1 ) represents the amount of BaP adsorbed per unit mass of chromatin at adsorption equilibrium.…”

“…The parameters resulting from the linear fits are provided in Table 1 . From the comparison of the two values of correlation coefficient (R 2 ) and q e in Tables 1 and it can be seen that the adsorption process of BaP by chromatin is more in line with the pseudo-second-order adsorption kinetic model [ 14 ].

Fig.

…”

“…Based on this model, it has been shown that anthraquinones, acridines and naphthylimides are able to intercalate into the base pairs of DNA by intercalating bite to achieve intercalation in vitro. The above studies provide a possibility for the removal of PAHs by DNA-rich substances [ 14 , 15 ]. DNA has been proposed as an adsorbent for the removal of BaP, but this method relies on the separation of DNA and solution by magnetic beads, which increases the cost and operational difficulties of using adsorbents during the adsorption process [ 4 ].…”

Adsorption ability of DNA/calcium alginate magnetic aerogel microspheres toward benzo(a)anthracene

“…Therefore, using the double helix structure, DNA can firmly bind PAHs molecules inside the molecule, and is an ideal material for adsorbing planar rigid small molecules (Huang et al 2021;Huang et al 2022;Xiong ET AL. 2021).…”