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Efficient Method for Recycling Silica Materials from Waste Powder of the Photonic Industry.

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Title: Efficient Method for Recycling Silica Materials from Waste Powder of the Photonic Industry.
Authors: Liang-Yi Lin1, Hsunling Bai1 hbai@mail.nctu.edu.tw
Source: Environmental Science & Technology. 5/7/2013, Vol. 47 Issue 9, p4636-4643. 8p.
Subjects: Waste recycling, Silica, Powders, Industrial wastes, Photonics, Waste recycling & economics, Cost effectiveness of energy consumption
Abstract: An efficient and economic approach is proposed for the fast and direct recovery of silica materials from photonic waste powder. Unlike the conventional alkaline fusion method for the extraction of silica from waste materials, this method possesses advantages of a rapid and low-energy-consumed process with total recovery yield. The obtained mesoporous silica material, denoted as MCM-41(DU)-F, was recovered directly from photonic waste powder at room temperature with the assistance of cationic surfactant, hydrofluoric acid, and ammonia hydroxide. The recycled MCM-41(DU)-F with a high specific surface area (788 m2/g), ordered mesoporous structure (4.5 nm), and large pore volume (1.1 cm3/g) was used as support of tetraethylenepentamine (TEPA) for the capture of CO2 from a flue gas stream. The results demonstrated that TEPA-impregnated MCM-41(DU)-F had an adsorption capacity of 120 mg of CO2/g of adsorbent This is higher than die amount adsorbed by TEPA-MCM-41(NaSi) made from pure chemicals (113 mg of CO2/g of adsorbent) and TEPA-MCM-41(AF) made from alkaline fusion (112 mg of CO2/g of adsorbent) under the same testing conditions. This novel recycling process, which can improve cost effectiveness for the mass production of valuable mesoporous silica materials from cheap and abundant resources through convenient preparation steps, is surely beneficial from the viewpoint of economical use of photonic industrial waste powder [ABSTRACT FROM AUTHOR]
Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 88092576
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  Data: Efficient Method for Recycling Silica Materials from Waste Powder of the Photonic Industry.
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  Data: <searchLink fieldCode="AR" term="%22Liang-Yi+Lin%22">Liang-Yi Lin</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Hsunling+Bai%22">Hsunling Bai</searchLink><relatesTo>1</relatesTo><i> hbai@mail.nctu.edu.tw</i>
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  Data: <searchLink fieldCode="JN" term="%22Environmental+Science+%26+Technology%22">Environmental Science & Technology</searchLink>. 5/7/2013, Vol. 47 Issue 9, p4636-4643. 8p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Waste+recycling%22">Waste recycling</searchLink><br /><searchLink fieldCode="DE" term="%22Silica%22">Silica</searchLink><br /><searchLink fieldCode="DE" term="%22Powders%22">Powders</searchLink><br /><searchLink fieldCode="DE" term="%22Industrial+wastes%22">Industrial wastes</searchLink><br /><searchLink fieldCode="DE" term="%22Photonics%22">Photonics</searchLink><br /><searchLink fieldCode="DE" term="%22Waste+recycling+%26+economics%22">Waste recycling & economics</searchLink><br /><searchLink fieldCode="DE" term="%22Cost+effectiveness+of+energy+consumption%22">Cost effectiveness of energy consumption</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: An efficient and economic approach is proposed for the fast and direct recovery of silica materials from photonic waste powder. Unlike the conventional alkaline fusion method for the extraction of silica from waste materials, this method possesses advantages of a rapid and low-energy-consumed process with total recovery yield. The obtained mesoporous silica material, denoted as MCM-41(DU)-F, was recovered directly from photonic waste powder at room temperature with the assistance of cationic surfactant, hydrofluoric acid, and ammonia hydroxide. The recycled MCM-41(DU)-F with a high specific surface area (788 m2/g), ordered mesoporous structure (4.5 nm), and large pore volume (1.1 cm3/g) was used as support of tetraethylenepentamine (TEPA) for the capture of CO2 from a flue gas stream. The results demonstrated that TEPA-impregnated MCM-41(DU)-F had an adsorption capacity of 120 mg of CO2/g of adsorbent This is higher than die amount adsorbed by TEPA-MCM-41(NaSi) made from pure chemicals (113 mg of CO2/g of adsorbent) and TEPA-MCM-41(AF) made from alkaline fusion (112 mg of CO2/g of adsorbent) under the same testing conditions. This novel recycling process, which can improve cost effectiveness for the mass production of valuable mesoporous silica materials from cheap and abundant resources through convenient preparation steps, is surely beneficial from the viewpoint of economical use of photonic industrial waste powder [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Environmental Science & Technology is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1021/es301504w
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 8
        StartPage: 4636
    Subjects:
      – SubjectFull: Waste recycling
        Type: general
      – SubjectFull: Silica
        Type: general
      – SubjectFull: Powders
        Type: general
      – SubjectFull: Industrial wastes
        Type: general
      – SubjectFull: Photonics
        Type: general
      – SubjectFull: Waste recycling & economics
        Type: general
      – SubjectFull: Cost effectiveness of energy consumption
        Type: general
    Titles:
      – TitleFull: Efficient Method for Recycling Silica Materials from Waste Powder of the Photonic Industry.
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            NameFull: Liang-Yi Lin
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            NameFull: Hsunling Bai
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            – D: 07
              M: 05
              Text: 5/7/2013
              Type: published
              Y: 2013
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              Value: 47
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              Value: 9
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