Adsorbent Material - Explore the Science & Experts | ideXlab

Scan Science and Technology

Contact Leading Edge Experts & Companies

Adsorbent Material

The Experts below are selected from a list of 16398 Experts worldwide ranked by ideXlab platform

Adsorbent Material – Free Register to Access Experts & Abstracts

Changsheng Peng – One of the best experts on this subject based on the ideXlab platform.

  • Removal of crystal violet and methylene blue from aqueous solutions using the fly ash-based Adsorbent Material-supported zero-valent iron
    Journal of Molecular Liquids, 2018
    Co-Authors: Jiwei Liu, Yongmei Wang, Yi Fang, Teza Mwamulima, Shaoxian Song, Changsheng Peng

    Abstract:

    Abstract A novel granular Adsorbent Material containing zero-valent iron (ZVI-GAM) was prepared with fly ash as skeletal Material, bentonite as binder and Enteromorpha prolifera as pore former. ZVI was synthesized by direct reduction of iron ore tailings powder with the coke as reductant in high temperature reducing atmosphere and embedded in the fly ash-based porous Adsorbent, which could reduce the agglomeration and oxidation of ZVI. The structure of ZVI-GAM was characterized by SEM, EDX, XRD, FTIR and BET. The removal amount of crystal violet (CV) and methylene blue (MB) was evaluated at different contact time, initial dye concentration, pH values and temperature. The adsorption isotherms of CV and MB fitted well to the Langmuir model. The maximum removal capacity of ZVI-GAM for CV and MB was found to be 172.41 mg/g and 151.52 mg/g, respectively. The adsorption processes of CV and MB could be described by a pseudo-second-order kinetic model. The reduction kinetics of CV by ZVI-GAM fitted to pseudo-first-order kinetics model. The results indicated that chemisorption and reduction controlled the removal process of CV while chemisorption only controlled the removal process of MB. The thermodynamic study indicated that the adsorption processes of CV and MB were found to be endothermic and spontaneous. Therefore, ZVI-GAM was an effective, low-cost and recyclable Material for dye removal.

  • Removal of Pb(II) and Cr(VI) from aqueous solutions using the fly ash-based Adsorbent Material-supported zero-valent iron
    Journal of Molecular Liquids, 2017
    Co-Authors: Jiwei Liu, Yongmei Wang, Yi Fang, Teza Mwamulima, Shaoxian Song, Changsheng Peng

    Abstract:

    Abstract In this study, a granular Adsorbent Material containing zero valent iron (ZVI-GAM) was made with fly ash as skeletal Material, bentonite as binder and Enteromorpha prolifera as pore former. Zero-valent iron was synthesized by direct reduction of iron ore tailings with the coke as reductant at 900 °C in the anoxic atmosphere. SEM/EDX, XRD, FTIR and BET analysis were used to characterize ZVI-GAM. SEM image showed that there were many different size pores in ZVI-GAM. XRD analysis indicated the presence of iron in zero-valent state. FTIR analysis revealed that the surface of ZVI-GAM owned the groups responsible for the heavy metals adsorption. The specific surface area of ZVI-GAM was 8.19 m 2 /g. ZVI-GAM was used as reaction and Adsorbent Material for the removal of Pb(II) and Cr(VI) from aqueous solutions. The factors affecting Pb(II) and Cr(VI) ions removal by ZVI-GAM in a batch model were studied including initial heavy metal concentrations, contact time, Adsorbent dosage, pH values and temperature. Maximum removal capacity for Pb(II) and Cr(VI) by ZVI-GAM was found to be 78.13 mg/g and 15.70 mg/g. ZVI-GAM had the best adsorption and reduction capacity for Cr(VI) and Pb(II) and could reduce Cr(VI) to Cr(III) and Pb(II) to Pb 0 . Therefore, ZVI-GAM was an effective, low-cost and recyclable Material and had great potential to be a promising technique for heavy metal remediation.

Jean-françois Focant – One of the best experts on this subject based on the ideXlab platform.

  • Impact of the Adsorbent Material on volatile metabolites during in vitro and in vivo bio-sampling.
    Talanta, 2020
    Co-Authors: Flavio A. Franchina, Delphine Zanella, Thibaut Dejong, Jean-françois Focant

    Abstract:

    The increased attraction of biological volatile compounds has opened the route to a wide variety of sampling techniques, amongst which trap tubes packed with Adsorbent Materials are commonly used. Many types of Adsorbent Materials are available and the choice of the Adsorbent can impact the obtained results in untargeted analysis. Therefore, a proper combination of the Adsorbent Material and the sample is necessary to increase the robustness and reproducibility of biological studies. In this study, the sampling performance of thermal desorption tubes with six common Adsorbent Material combinations, i.e., Tenax® TA, Tenax® TA/Carbopack™ B, Tenax® TA/Sulficarb, Tenax® TA/Carbograph™ 5TD, Tenax® TA/Carbograph™ 1TD/Carboxen® 1003, and Carboxen® 1016/Carbograph™ 5TD, was evaluated in two different setups: in vitro and in vivo sampling. The in vitro setup consisted of the headspace dynamic extraction of spiked serum, and a mixture of 19 standards was evaluated in terms of response and reproducibility. The in vivo setup consisted into two parts: the first one was based the evaluation of the standard mixture, which was flash-vaporised into Tedlar® bags containing exhaled breath; the second part was based on the longitudinal monitoring of breath metabolites originating from a beverage intake (i.e., brewed coffee), over a 90 min time period. The tubes were all desorbed and analysed in a comprehensive two-dimensional gas chromatography system coupled to a high-resolution time-of-flight mass spectrometer (GC × GC-HR ToF MS). In both sampling setups, the widest analytes coverage and the overall best extraction yield on the selected compounds were obtained using Tenax® TA, followed by Tenax® TA/Carbopack™ B. Tenax® TA provided the highest sampling reproducibility with 12 %RSD, 10 %RSD and

Jiwei Liu – One of the best experts on this subject based on the ideXlab platform.

  • Removal of crystal violet and methylene blue from aqueous solutions using the fly ash-based Adsorbent Material-supported zero-valent iron
    Journal of Molecular Liquids, 2018
    Co-Authors: Jiwei Liu, Yongmei Wang, Yi Fang, Teza Mwamulima, Shaoxian Song, Changsheng Peng

    Abstract:

    Abstract A novel granular Adsorbent Material containing zero-valent iron (ZVI-GAM) was prepared with fly ash as skeletal Material, bentonite as binder and Enteromorpha prolifera as pore former. ZVI was synthesized by direct reduction of iron ore tailings powder with the coke as reductant in high temperature reducing atmosphere and embedded in the fly ash-based porous Adsorbent, which could reduce the agglomeration and oxidation of ZVI. The structure of ZVI-GAM was characterized by SEM, EDX, XRD, FTIR and BET. The removal amount of crystal violet (CV) and methylene blue (MB) was evaluated at different contact time, initial dye concentration, pH values and temperature. The adsorption isotherms of CV and MB fitted well to the Langmuir model. The maximum removal capacity of ZVI-GAM for CV and MB was found to be 172.41 mg/g and 151.52 mg/g, respectively. The adsorption processes of CV and MB could be described by a pseudo-second-order kinetic model. The reduction kinetics of CV by ZVI-GAM fitted to pseudo-first-order kinetics model. The results indicated that chemisorption and reduction controlled the removal process of CV while chemisorption only controlled the removal process of MB. The thermodynamic study indicated that the adsorption processes of CV and MB were found to be endothermic and spontaneous. Therefore, ZVI-GAM was an effective, low-cost and recyclable Material for dye removal.

  • Removal of Pb(II) and Cr(VI) from aqueous solutions using the fly ash-based Adsorbent Material-supported zero-valent iron
    Journal of Molecular Liquids, 2017
    Co-Authors: Jiwei Liu, Yongmei Wang, Yi Fang, Teza Mwamulima, Shaoxian Song, Changsheng Peng

    Abstract:

    Abstract In this study, a granular Adsorbent Material containing zero valent iron (ZVI-GAM) was made with fly ash as skeletal Material, bentonite as binder and Enteromorpha prolifera as pore former. Zero-valent iron was synthesized by direct reduction of iron ore tailings with the coke as reductant at 900 °C in the anoxic atmosphere. SEM/EDX, XRD, FTIR and BET analysis were used to characterize ZVI-GAM. SEM image showed that there were many different size pores in ZVI-GAM. XRD analysis indicated the presence of iron in zero-valent state. FTIR analysis revealed that the surface of ZVI-GAM owned the groups responsible for the heavy metals adsorption. The specific surface area of ZVI-GAM was 8.19 m 2 /g. ZVI-GAM was used as reaction and Adsorbent Material for the removal of Pb(II) and Cr(VI) from aqueous solutions. The factors affecting Pb(II) and Cr(VI) ions removal by ZVI-GAM in a batch model were studied including initial heavy metal concentrations, contact time, Adsorbent dosage, pH values and temperature. Maximum removal capacity for Pb(II) and Cr(VI) by ZVI-GAM was found to be 78.13 mg/g and 15.70 mg/g. ZVI-GAM had the best adsorption and reduction capacity for Cr(VI) and Pb(II) and could reduce Cr(VI) to Cr(III) and Pb(II) to Pb 0 . Therefore, ZVI-GAM was an effective, low-cost and recyclable Material and had great potential to be a promising technique for heavy metal remediation.