Efficient removal of chloramphenicol by K2CO3 activated porous carbon derived from cigarette butts

Adsorption behavior of chloramphenicol on an activated carbon from pomelo peel using KHCO3 activator

“…Table S1 (ESI†) displays the maximum adsorption capacities of PMAC and various biomass adsorbents for CHL in water. 5,45–49 It can be observed that the porous carbon prepared in this work exhibited a high adsorption capacity in the treatment of wastewater. It is worth noting that the R 2 value of the Freundlich model was also high at 303 K and 308 K, indicating that multilayer adsorption and chemical adsorption may be involved in the adsorption process.…”

“…Compared with the FTIR spectra of PMAC, the new peak at about 1509 cm À1 was the characteristic peak of -NO 2 in CHL, which indicated the adsorption of CHL onto PMAC. 45 The intensities of the absorption bands at 3221, 1678 and 1035 cm À1 corresponding to the O-H, CQO and C-O stretching vibrations can be clearly seen to decrease significantly in the FTIR spectra of PMAC after CHL adsorption. The peak shift of the above three bands could be caused by the coordination of PMAC with CHL antibiotic through hydrogen bond formation.…”

Preparation of a microbial char adsorbent from polyethyleneimine-modified and nickel-loaded microorganisms for efficient removal of metronidazole

“…The decrease may be because MNZ occupied a small number of adsorption sites and pores, resulting in a slight decrease in the adsorption capacity of Ni-MMC in subsequent cycles. 16 Nevertheless, Ni-MMC still maintained an excellent adsorption capacity of over 89.12%. Therefore, it had good reusability and could be a potential MNZ adsorbent.…”

“…Asgharzadeh et al 15 prepared rice bran-derived biochar, and the maximum adsorption capacity for MNZ reached 21.33 mg g −1 . Xue et al 16 successfully prepared a highly porous carbon with a high specific surface area (1421.27 m 2 g −1 ) and abundant porous structure from cigarette butts through hydrothermal and K 2 CO 3 activation, which showed excellent adsorption capacity for chloramphenicol (450.13 mg g −1 ). The results showed that the biochar prepared in the study could be used as an alternative to expensive adsorbents to remove these antibiotics from aqueous solutions.…”

A comprehensive review on triple R eco-management strategies to reduce, reuse and recycle of hazardous cigarette butts

“…K 2 CO 3 activated carbon derived from CBs has been shown to be effective in removing chloramphenicol and other antibiotics, with a surface area of 1421.27 m 2 g -1 and a maximum absorption capacity of 450.13 mg g −1 . However, the basic pH and the presence of fulvic acid can have a detrimental impact on the adsorption of chloramphenicol [ 56 ].…”