Fabrication of Tannin-Based Dithiocarbamate Biosorbent and Its Application for Ni(II) Ion Removal

Zhao, Chuanliang; Zheng, Huaili; Sun, Yongjun; Liu, Bingzhi; Zhou, Yuhao; Liu, Yongzhi; Zheng, Xinqian

doi:10.1007/s11270-017-3593-0

Cited by 16 publications

(4 citation statements)

References 48 publications

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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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“…part of this study is that the leaching solution can be taken as a precursor solution for the synthesis of catalyst [58]. Similarly, HPB-3D inorganic heteropoly blue [99], MnO2-templated iron oxide-coated diatomite [59], magnetic g-C3N4/a-Fe2O3/Fe3O4 composite [100], burgerlike a-Fe2O3 catalyst [101], 3D hierarchical nanostructured hematite (Fe2O3) [102], MoS2/Fe3O4 nano composite [56], Mixed a-Fe2O3/Bi2WO6 oxides [103], Fe2O3/expanded perlite (Fe2O3-Ep) composite catalyst [104], Fe-Zn-oxide/hydrochar [105], Ag3PO4/CuO composites [106], zinc oxide decorated iron oxide/reduced graphene oxide nanocomposite [107], Cu-doped LaFeO3 [108], Fe(III)tartrate/TiO2 nano tubular [109], Fe3O4-GO nano composite [27], ZnFe2O4 nanostructures [110], BiFeO3-g-C3N4 compound [55] were prepared by the hydrothermal method and used as photocatalysts. Recently, some researchers investigated that the metal doped Fe2O3 catalyst has good stability and potential to enhance the photo degradation [111].…”

Section: Hydrothermal Methodsmentioning

confidence: 99%

A Review Paper on Heterogeneous Fenton Catalyst: Types of Preparation, Modification Techniques, Factors Affecting the Synthesis, Characterization, and Application in the Wastewater Treatment

Kumar

Mohapatra

Dharmadhikari

et al. 2019

Bull. Chem. React. Eng. Catal.

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This comprehensive review focuses on the different factors, modification in the synthesis method, characterization and application of heterogeneous catalyst in the wastewater treatment based on the Fenton process. The present review highlights the different catalyst preparation methods like wet impregnation method, hydrothermal method, sol-gel method, precipitation method and their application to treat different recalcitrant organic chemicals. Major heterogeneous catalyst synthesis methods were discussed with their excellent workability. The importance of modification through physical and chemical method was also reported. Different catalyst, pollutants and optimum parametric conditions available in the literature along with some relevant studies are summarized. The effect of factors like pH, calcination and some other modifiers on the synthesis and their efficiency in the wastewater treatment has been described. The important characterization of synthesized catalysts explaining their working efficiency has also been discussed. In the final section, the application of heterogeneous catalyst synthesized by different methods in the wastewater/effluent treatment has been investigated. The main aim of this review is to find out the influence of process parameters and catalytic method on degradation/decolorization of organic compounds present in industrial or synthetic wastewater. Copyright © 2020 BCREC Group. All rights reserved

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“…However, due to the complexity of vehicle types and low speeds at intersections, the size of vehicles is a factor that cannot be ignored in conflict studies. Current indicators seldom consider it [12].…”

Section: Introductionmentioning

confidence: 99%

An Automatic Conflict Detection Framework for Urban Intersections Based on an Improved Time Difference to Collision Indicator

Lei

Zhu

et al. 2021

Remote Sensing

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Urban road intersections are one of the key components of road networks. Due to complex and diverse traffic conditions, traffic conflicts occur frequently. Accurate traffic conflict detection allows improvement of the traffic conditions and decreases the probability of traffic accidents. Many time-based conflict indicators have been widely studied, but the sizes of the vehicles are ignored. This is a very important factor for conflict detection at urban intersections. Therefore, in this paper we propose a novel time difference conflict indicator by incorporating vehicle sizes instead of viewing vehicles as particles. Specially, we designed an automatic conflict recognition framework between vehicles at the urban intersections. The vehicle sizes are automatically extracted with the sparse recurrent convolutional neural network, and the vehicle trajectories are obtained with a fast-tracking algorithm based on the intersection-to-union ratio. Given tracking vehicles, we improved the time difference to the conflict metric by incorporating vehicle size information. We have conducted extensive experiments and demonstrated that the proposed framework can effectively recognize vehicle conflict accurately.

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Fabrication of Tannin-Based Dithiocarbamate Biosorbent and Its Application for Ni(II) Ion Removal

Cited by 16 publications

References 48 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

A Review Paper on Heterogeneous Fenton Catalyst: Types of Preparation, Modification Techniques, Factors Affecting the Synthesis, Characterization, and Application in the Wastewater Treatment

An Automatic Conflict Detection Framework for Urban Intersections Based on an Improved Time Difference to Collision Indicator

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