In Situ Green Synthesis of Mil-100(Fe) Modified Edta as an Enhanced Candidate Detoxifying Agent of Lead Heavy Metal (Pb) and Its Adsorption Characteristics

Abstract

EDTA-modified MIL-100(Fe) (MIL = Matériaux de l′Institut Lavoisier) was successfully prepared in situ using an electrochemical method. The porous nature of the material and its high stability under intestinal and stomach conditions present it as a great candidate agent for lead detoxification. Kinetic and isotherm investigations revealed that the adsorption of Pb2+ ions in MIL-100(Fe)-EDTA followed a pseudo-second order kinetic model with a rate constant of 0.0109 g/mg.min and a Langmuir isotherm model with an adsorption energy of 31.29 kJ/mol. The synthesized MIL-100-EDTA showed three times enhanced performance than MIL-100(Fe) in Pb2+ adsorption study. Optimum adsorption was achieved at pH 3 at an initial concentration of 5 ppm and a contact time of 12 h, yielding adsorption efficiency and capacity of up to 86.65% and 3.68 mg/g, respectively.

Study on Chloroquine phosphate loading capacity of MIL-100(Fe) synthesized by sonochemical method

“…This is a potential material for several applications such as gas storage, adsorption, and treatment [8,9]… and MIL-100(Fe) material is also attracted lots of attention in research and application in the field of drug delivery [10]. This material is synthesized from different methods such as sonochemical [11], hydrothermal [12,13], microwave [14], reflux [15], electrochemical method [16]… Hydrothermal is the most frequent method used, however, long synthesis time, high temperature and pressure, which consume a lot of energy are the main disadvantages of this method. Recently, green synthesis methods such as microwave, sonochemical or mechanical have attracted more attention from scientists due to their short synthesis time, good efficiency, and reduced energy consumption [17].…”