Removal of Berberine from Wastewater by MIL-101(Fe): Performance and Mechanism

Abstract

The water contamination from pharmaceuticals and personal care products (PPCPs) has attracted worldwide attention in recent years because of its threat to public health. Berberine is a typical anti-inflammatory medicine and berberine wastewater is difficult to be treated due to its high toxicity, poor biodegradability, and high acidity. Metal–organic frameworks would be a good choice to remove berberine from wastewater due to its advantages of high specific surface area, ultrahigh porosity, and structural and functional tunability. In this study, MIL-101­(Fe) was synthesized and used for the removal of berberine from water. Experimental results indicated that MIL-101­(Fe) showed promising characteristics when berberine was adsorbed in acidic wastewater. The high concentration of chloride in berberine wastewater could promote the adsorption of berberine by MIL-101­(Fe). Fitting of batch equilibrium data showed that MIL-101­(Fe) had a maximum adsorption capacity of 163.93 mg/g for berberine removal at pH 7, and the berberine sorption on MIL-101­(Fe) followed the pseudo-second-order model. Furthermore, the associate mechanism for berberine removal was proposed by characterizing the material and theoretical calculation. The X-ray power diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) analysis showed that no chemical reaction occurred during the adsorption of berberine by MIL-101­(Fe). Also, the theoretical calculation results indicated that π–π interactions may play the main role in the adsorption of berberine onto MIL-101­(Fe). The findings of this study suggest that MIL-101­(Fe) is a promising sorbent for berberine removal from wastewater.

MIL-101 (Fe) @Ag Rapid Synergistic Antimicrobial and Biosafety Evaluation of Nanomaterials

“…Therefore, it is meaningful to use synthetic bimetallic MOF materials to inhibit bacterial growth. The growth curves of E. coli and S. aureus under normal conditions clearly show four periods of bacterial growth: delayed, logarithmic, stable, and decaying periods [ 51 , 52 , 53 , 54 , 55 ]. The progressive decrease in the logarithmic phase for different concentrations of MIL-101(Fe)@Ag (Ag 0.0127 wt%) (60, 80, 100 and 120 μg/mL), along with the decrease in the time for the bacteria to reach the plateau phase ( Figure 12 a,b), indicated that the inhibition of E. coli and S. aureus by MIL-101(Fe)@Ag (Ag 0.0127 wt%) was concentration-dependent.…”

“…The cell-survival rate remained above 75%, indicating that MIL-101(Fe)@Ag (Ag 0.0127 wt%) is non-toxic to AD293 cells. These phenomena also indicate that MIL-101(Fe) and MIL-101(Fe)@Ag (Ag 0.0127 wt%) have good biocompatibility [ 48 , 49 , 50 , 51 , 61 , 62 , 68 ]. However, the bound MIL-101(Fe)@Ag is still limited in concentration due to the inherent toxicity of silver ions [ 18 ].…”

Fabrication of molecularly-imprinted gold nanoparticle-embedded Fe-MOFs for highly selective SERS detection of 17β-estradiol in milk

“…3E). 42 The spectrum of the Au was fixed at 83.4 eV (Au 4f 5/2 ) and 87.0 eV (Au 4f 7/2 ) in Fig. 3F.…”

Green synthesis of a disordered N-doped carbonaceous aerogel from waste for the removal of over-the-counter drugs and environmental assessment

“…[26][27][28] Various adsorbent materials find application in wastewater treatment to proficiently eliminate contaminants. Among the frequently utilized ones are activated carbon, 29 zeolites, 30 clay minerals, 31 activated alumina, 32 biosorbents, 33 carbon nanotubes, 34 polymeric resins, 35 hydrous iron oxides, 36 silica gel, 37 and nano-carbons. 38 The chemical stability, high specific surface area, recyclability and high removal efficiency are the criteria for materials to be employed as adsorbents.…”