Polyphenol–SiO2 hybrid biosorbent for heavy metal removal. Yerba mate waste (Ilex paraguariensis) as polyphenol source: Kinetics and isotherm studies

Copello, Guillermo Javier; Pesenti, Mariela P.; Raineri, Mariana; Mebert, Andrea Mathilde; Piehl, Lidia Leonor; Celis, Emilio Rubín de; Díaz, Luis Eduardo

doi:10.1016/j.colsurfb.2012.08.015

Cited by 38 publications

(12 citation statements)

References 49 publications

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“…This hybrid material has shown a maximum adsorption capacity of 0.04 mmol·g −1 of Cr(VI) at acidic condition (pH 3.0) for 60 min and the equilibrium time was achieved within 50 min. 165 Both Langmuir and Freundlich isotherms showed the fitting of the material for Cr(VI) removal (as given in Table 5) and followed pseudo first and second order kinetics ( Table 2).…”

Section: Journal Of Chemical and Engineering Datamentioning

confidence: 94%

Recent Advances in Silica-Based Materials for the Removal of Hexavalent Chromium: A Review

2015

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Hexavalent chromium [Cr(VI)], one of the most toxic contaminants, is released in the environment due to various anthropogenic activities. Exposure of Cr(VI) can pose a serious threat to the public health as well as flora and fauna. Effective treatment of Cr(VI) is, therefore, very essential from safety, health, and environment points of view. The present review focuses on the development of silica-based materials for the adsorption of Cr(VI) from wastewater. After discussing toxicity issues and general removal methods of Cr(VI), the importance of silica materials are highlighted. The silica has different shapes, sizes, surface areas, and pore diameters and, hence, can play a vital role in designing the adsorbent. They can be modified into organic, inorganic, polymeric, biological, and ionic liquid based materials. Therefore, they are broadly classified into these five categories. The adsorption isotherms and kinetics of these materials for Cr(VI) are discussed and compared with each other. Future prospects based on the findings of the review article are summarized in the end which mainly emphasizes the importance of biosorbents and ionic liquid immobilized silica materials for the treatment of Cr(VI).

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Section: Journal Of Chemical and Engineering Datamentioning

confidence: 94%

Recent Advances in Silica-Based Materials for the Removal of Hexavalent Chromium: A Review

2015

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“…It has been proved that polyphenols have remarkable antioxidant and anti-inflammatory effects that are beneficial in cardiovascular system, digestive system, and tumor prevention ( Cardona et al, 2013 ; Chu, 2014 ; Khurana et al, 2013 ; Qiao et al, 2014 ; Yang et al, 2014 ). Polyphenols were also reported detoxicate and removal-orientated in heavy metal intoxication ( Copello et al, 2013 ). To our knowledge, no report has been made on the protective effects of polyphenols in Pb induced renal toxicity.…”

Section: Introductionmentioning

confidence: 99%

Protective Effects of Green Tea Polyphenol AgainstRenal Injury Through ROS-Mediated JNK-MAPK Pathway in Lead Exposed Rats

Wang¹,

Li²,

Hu³

et al. 2016

Molecules and Cells

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To investigate the potential therapeutic effects of polyphenols in treating Pb induced renal dysfunction and intoxication and to explore the detailed underlying mechanisms. Wistar rats were divided into four groups: control groups (CT), Pb exposure groups (Pb), Pb plus Polyphenols groups (Pb+PP) and Polyphenols groups (PP). Animals were kept for 60 days and sacrificed for tests of urea, serum blood urea nitrogen (BUN) and creatinine. Histological evaluations were then performed. In vitro studies were performed using primary kidney mesangial cells to reveal detailed mechanisms. Cell counting kit-8 (CCK-8) was used to evaluate cell viability. Pb induced cell apoptosis was measured by flow cytometry. Reactive oxygen species (ROS) generation and scavenging were tested by DCFH-DA. Expression level of tumor necrosis factor-α (TNF-α), interleukin-1-β (IL-1-β) and IL-6 were assayed by ELISA. Western blot and qPCR were used to measure the expression of ERK1/2, JNK1/2 and p38. Polyphenols have obvious protective effects on Pb induced renal dysfunction and intoxication both in vivo and in vitro. Polyphenols reduced Pb concentration and accumulation in kidney. Polyphenols also protected kidney mesangial cells from Pb induced apoptosis. Polyphenols scavenged Pb induced ROS generation and suppressed ROS-mediated ERK/JNK/p38 pathway. Downstream pro-inflammatory cytokines were inhibited in consistency. Polyphenol is protective in Pb induced renal intoxication and inflammatory responses. The underlying mechanisms lie on the antioxidant activity and ROS scavenging activity of polyphenols.

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“…Several studies have been carried out on the extraction of polyphenols from various plants using different solvents, showing that the structure, yield, recovery, and type of phenolic compounds depend on the plant nature and extraction solvents [15]. Nepeta melissifolia , Phlomis lanata , Ilex paraguariensis , and Origanum vulgare demonstrated a high total phenol content with more than 15.0 mg gallic acid equivalent (GAE)/g dried sample, whereas Geranium purpureum , Matricaria chamomilla , and Lavandula vera showed a content less than 7 mg GAE/g dried sample [16, 17].…”

Section: Introductionmentioning

confidence: 99%

“…Because of the strong chelating ability of phenolic hydroxyls towards transition metals, the polyphenol-based adsorbent showed to be potential and efficient sorbent for the removal of Pb(II) and Cd(II) from aqueous solutions. In this context, Copello et al studied the application of hybrid low-cost SiO 2 /polyphenol matrices as a bioadsorbent for Pb(II), Cr(III), and Cr(VI) [16]. Waseem et al have used biomass derived from of Acacia nilotica leaves as an adsorbent material for the removal of cadmium and lead, and they found the maximum adsorption to be 2.51 mg/g and 4.99 mg/g for Pb(II) and Cd(II), respectively [13].…”

Section: Introductionmentioning

confidence: 99%

Eco-Efficient Biosorbent Based on Leucaena leucocephala Residues for the Simultaneous Removal of Pb(II) and Cd(II) Ions from Water System: Sorption and Mechanism

Cimá-Mukul

Abdellaoui

Abatal

et al. 2019

Bioinorganic Chemistry and Applications

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Leucaena leucocephala is a potential source of polyphenols widely available in southern Mexico. This work highlights the extraction of polyphenols from Leucaena leucocephala leaves waste (LLEPs) and the evaluation of their efficiency to remove the single and multicomponent Pb(II) and Cd(II) metal ions from aqueous solutions. Batch test conditions were carried out to examine the effects of contact time, initial metal ion concentration, and adsorbent dosage on the biosorption process. The surface textures and the composition of the LLEP biosorbent was characterized using pH of point of zero charge (pHPZC), attenuated total reflectance Fourier transform infrared (ATR-FTIR), and matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry, respectively. Further analysis using ATR-FTIR after adsorption contact of biosorbent was also investigated. The highest Langmuir saturation monolayer adsorption capacity, qm, for the removal of Pb(II) by LLEPs was obtained as 25.51 and 21.55 mg/g in mono- and bimetal solutions, respectively. The pseudo-second-order model provided the best fit for the kinetic data obtained for the removal of Pb(II), Cd(II), and their mixture, and the k2 values depend on the adsorbent mass. This implied that the chemisorption process might be the mechanism of the solute ions-LLEPs interaction in this study. Furthermore, nearly 100% removal of lead and cadmium individually and 95% of their mixture was found using 0.9 g of LLEPs.

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Polyphenol–SiO2 hybrid biosorbent for heavy metal removal. Yerba mate waste (Ilex paraguariensis) as polyphenol source: Kinetics and isotherm studies

Cited by 38 publications

References 49 publications

Recent Advances in Silica-Based Materials for the Removal of Hexavalent Chromium: A Review

Recent Advances in Silica-Based Materials for the Removal of Hexavalent Chromium: A Review

Protective Effects of Green Tea Polyphenol AgainstRenal Injury Through ROS-Mediated JNK-MAPK Pathway in Lead Exposed Rats

Eco-Efficient Biosorbent Based on Leucaena leucocephala Residues for the Simultaneous Removal of Pb(II) and Cd(II) Ions from Water System: Sorption and Mechanism

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