Environmental risk and possibilities of ciprofloxacin phytoremediation

Abstract

The article considers antibiotics of the quinolone series, their using and mechanism of action. Based on the literature data, their application, distribution mechanisms, accumulation and behavior in environmental objects are considered. It is noted that the role of aquatic plants in the processes of biochemical degradation has not been sufficiently studied. Under the conditions of a laboratory model experiment, we studied the patterns of ciprofloxacin elimination by hydatophytes, i.e., aquatic plants completely submerged in water (Canadian pondweed, rigid hornwort, Eurasian watermilfoil). The spectral characteristics of ciprofloxacin were studied and quantitative estimates of the absorption of the antibiotic from solutions with submerged aquatic plants were made. We calculated elimination rate constants and phytoremediation potential. It was found that the rate of elimination of ciprofloxacin and phytoremediation potential depended on the type of aquatic plant and the initial concentration of the antibiotic. The highest elimination rate was found in models containing hornwort. Based on the data obtained, a conclusion was made about the prospects for the using of hydatophytes in phytopurification systems for post-treatment of wastewater from ciprofloxacin.

Efficient Photocatalytic Luminous Textile for Simulated Real Water Purification: Advancing Economical and Compact Reactors

“…It is well known that in any oxidation process based on photocatalysis by TiO2, reactive oxygen species (ROS) such O2• − and HO• radicals are involved in the RB5 degradation mechanism. O2• − and HO• radicals are produced that react and decompose the dye molecules according to the following equation of reactions [1][2][3][4][5][6][7][8][9][10]:…”

“…It is described that a large proportion of polluted water goes directly to wastewater treatment plants, and one of the major problems is the growing accumulation of stable toxic substances that present chemical hazards [2]. The situation is becoming critical due to the lack of rational water treatment systems capable of reducing or eliminating the concentration of recalcitrant pharmaceutical substances in water [3]. The main problem is the way in which they are eliminated, since conventional processes (such as filtration, coagulation or adsorption) are not satisfactory in the process of eliminating various types of pollutants [4,5].…”