Synthesis of oak gall tannin-immobilized hexagonal mesoporous silicate (OGT-HMS) as a new super adsorbent for the removal of anionic dye from aqueous solution

Binaeian, Ehsan; Seghatoleslami, Nasser; Chaichi, Mohammad Javad

doi:10.1080/19443994.2015.1020513

Cited by 25 publications

(23 citation statements)

References 55 publications

(69 reference statements)

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“…Recent studies have shown that heavy metals can be removed from water and wastewater by efficient, low-cost remediation plant materials and natural tannin adsorbent [13][14][15]. Zhao et al [16] and Binaeian et al [17] reported that fabricated tannin-based dithiocarbamate and hexagonal mesoporous silicate biosorbents are efficient in the removal of Ni and anionic dye from aqueous solutions, respectively. Other studies have supported the influence of tannin-rich plants on the biological availability of metal ions by chelation [18,19], but the high solubility of tannin in aqueous solution has limited its direct application as a biosorbent, although several methods such as impregnation of tannin on chitin [20], binding of tannin to aminohexyl cellulose and collagen-fiber [21,22] have been reported for the immobilization of tannin in aqueous solutions with suitable adsorption capacity for toxic metals.…”

Section: Sequential Extraction Of Tanninmentioning

confidence: 99%

Removal of Pb2+ from Water by Synthesized Tannin Resins from Invasive South African Trees

Okoli

Shilowa

Anyanwu

et al. 2018

Water

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Contamination of water by Pb2+ and the threat of invasive vegetation affects the quality and quantity of water accessible to all life forms and has become a primary concern to South Africa and the world at large. This paper synthesized, characterized, and evaluated the resins from tannin-rich invasive Acacia species as an environmentally benign Pb 2+ adsorbent. The analysis of the pore volume and surface area of the resins reveals a small pore dimension of 9 × 10 −3 cc/g and large surface area (2.31-8.65 m 2 /g), presenting suitable physical parameters for adsorption of Pb 2+ . Langmuir model offers the best correlation data at pH 6 with maximum monolayer coverage capacity of 189.30, 105.70 and 98.82 mg/g for silver, black and green wattle tannin resins in aqueous solutions, respectively. The kinetic data suitably fits into a pseudo-second-order model, with the Dubinin-Radushkevich adsorption energy (E) ≤ 7.07 KJ/mol and intra-particle diffusion model confirming an associated physisorption process within the bio-sorption system. The thermogravimetric analysis (TGA) and Fourier-transform infrared (FT-IR) data of the resins were informative of the high thermal stability and chelating functionality such as -OH and -NH 2 responsible for the removal of Pb 2+ . All the resins showed good adsorption characteristics while silver wattle tannin resin has the best adsorption capacity compared to black and green wattle tannin resins. This study provides a prototype adsorbent from invasive plants for the removal of Pb 2+ in water.

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Section: Sequential Extraction Of Tanninmentioning

confidence: 99%

Removal of Pb2+ from Water by Synthesized Tannin Resins from Invasive South African Trees

Okoli

Shilowa

Anyanwu

et al. 2018

Water

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“…Due to the anionic nature of the adsorbates, dye removal efficiency decreased significantly with increasing pH levels. The maximum uptake has been recorded at pH 2, and the adsorption tended to be negligible for pH above 4 . Literature also shows that temperature increase from room values (20–25 °C) to 50 °C favors the adsorption of anionic dyes by tannin adsorbents (endothermic process) .…”

Section: Adsorption Studiesmentioning

confidence: 91%

“…Mesoporous silicate materials, presenting a high surface area, can be used as a support to distribute tannin. Bayberry and oak gall tannins have been successfully immobilized in silica beads and hexagonal mesoporous silicate, respectively . Mesoporous silicate materials have been first aminated and then subjected to crosslinking reaction with glutaraldehyde.…”

Section: Synthesis Of Tannin‐adsorbentsmentioning

confidence: 99%

“…At pH 2, maximum adsorption capacities estimated by the Liu model varied between 161.2 mg g −1 (25 °C) and 418.3 mg g −1 (50 °C). Binaeian et al . synthetized oak gall tannin‐immobilized on aminated hexagonal mesoporous silicate and reported an excellent affinity to Direct yellow 86.…”

Section: Adsorption Studiesmentioning

confidence: 99%

“…Bayberry and oak gall tannins have been successfully immobilized in silica beads and hexagonal mesoporous silicate, respectively. [52,53] Mesoporous silicate materials have been first aminated and then subjected to crosslinking reaction with glutaraldehyde. Other researchers [54] prepared hybrid materials by mixing tannin with APTES (3-aminopropyltriethoxysilane).…”

Section: Compositesmentioning

confidence: 99%

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Tannin‐Adsorbents for Water Decontamination and for the Recovery of Critical Metals: Current State and Future Perspectives

Santos

Bacelo

Boaventura

et al. 2019

Biotechnology Journal

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Biosorption is known as an effective way to clean‐up water from organic and inorganic contaminants and has also emerged as a promising technology to recover critical substances. Tannins are renewable materials, coming from multiple vegetable sources. A variety of biosorbents have been developed from tannins, including tannin resins, rigid foams, composites with mesoporous silica, cellulose, collagen, and magnetic adsorbents. These materials have shown an excellent ability to uptake heavy‐metal cations (Cd(II), Cu(II), Pb(II), Ni(II), Cr(III)), owning to the chelating ability provided by the plentiful adjacent hydroxyl groups. In addition, tannin‐adsorbents have shown exceptional ability to remove Cr(VI), and to uptake Au(III) and Pd(II) from strong acidic solutions, which has evident application in the recovery of precious metals from e‐wastes leaching. The fact that tannin‐adsorbents can reduce the oxidation state of these adsorbates to Cr(III) and to elemental species of Au and Pd is interesting. Adsorption of dyes, surfactants, pharmaceuticals and antimony is also feasible, but the removal of certain metalloid species, such as arsenic and phosphate, seems to be limited even after applying chemical modifications. This article presents a systematic review on the preparation of tannin‐adsorbents and their application in water decontamination and in the recovery of critical metals.

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Hydroxyethyl cellulose hydrogel modified with tannic acid as methylene blue adsorbent

Feng

Zhang

Kang

et al. 2020

J of Applied Polymer Sci

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This work developed an effective way to improve the methylene blue (MB) adsorption performance of cellulose-based hydrogel by modified with tannic acid (TA). HEC-co-p(AA-AM)/TA hydrogel was synthesized by grafting of acrylic acid (AA) and acrylamide (AM) onto hydroxyethyl cellulose (HEC), followed by modified with TA. Fourier transform infrared spectroscopy manifested that AA and AM were successfully grafted onto the hydrogel, and TA was immobilized in the hydrogel. Field emission scanning electron microscope demonstrated that the hydrogel after TA modification had a homogeneous pore structure. Brunauer-Emmett-Teller (BET) surface areas, total pore volume, and average pore diameters of the hydrogel are 11.821 m 2 g −1 , 0.0641 cm 3 g −1 , and 2.538 nm, respectively. The high swelling ratio (1179.2 g g −1 in deionized water) was in favor of the MB adsorption. The results of the adsorption experiments illustrated that HEC-cop (AA/AM) hydrogel had excellent MB adsorption performance. As the pH increases, the electrostatic attraction is enhanced, and the adsorption capacity is improved. The adsorption process was more fit with pseudo-second-order kinetics, and the maximum adsorption capacity (3438.27 mg g −1) was determined by Langmuir model. Thermodynamic studies suggested that the adsorption process is spontaneous, exothermic, and entropy reduction. X-ray photoelectron spectroscopy analysis confirmed that MB molecules were reacted with the oxygen atoms in hydroxyl and carboxyl groups by ion-exchange. High reusability demonstrated that the hydrogel could be a potential candidate for removal cationic dye from industrial effluents.

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Synthesis of oak gall tannin-immobilized hexagonal mesoporous silicate (OGT-HMS) as a new super adsorbent for the removal of anionic dye from aqueous solution

Cited by 25 publications

References 55 publications

Removal of Pb2+ from Water by Synthesized Tannin Resins from Invasive South African Trees

Removal of Pb2+ from Water by Synthesized Tannin Resins from Invasive South African Trees

Tannin‐Adsorbents for Water Decontamination and for the Recovery of Critical Metals: Current State and Future Perspectives

Hydroxyethyl cellulose hydrogel modified with tannic acid as methylene blue adsorbent

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