Synthesis of double-layer silicates from recycled glass cullet: A new type of chemical adsorbent

Journal Article · Fri Jan 15 04:00:00 EST 1999 · Environmental Science and Technology

DOI:https://doi.org/10.1021/es980155v· OSTI ID:318753

Grutzeck, M W; Marks, J A ^[1]

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1. Pennsylvania State Univ., University Park, PA (United States). Materials Research Lab.

Curbside recycling of glass bottles and jars has been extremely successful. Those glasses that are sorted by color are a marketable commodity; those that are not have no immediate commercial value and must be disposed of in landfills. With proper chemical treatment, however, mixed-glass cullet can be transformed into claylike chemical adsorbents. By mixing ground glass cullet with either alkali hydroxide or alkali carbonate solutions one is able to form a hydrous double-layer silicate known as rhodesite (NaKCa{sub 2}[Si{sub 8}O{sub 19}]{center_dot}5H{sub 2}O). Tests of the adsorptive and cation exchange properties comparable to natural clays and zeolites. Whereas natural materials tend to become sticky and/or lose their granularity when wet, rhodesite-based adsorbents do not.

• OSTI ID: 318753
• Journal Information: Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 2 Vol. 33; ISSN ESTHAG; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ADSORBENTS
GLASS
RECYCLING
SILICATES
WASTE MANAGEMENT
WASTE PRODUCT UTILIZATION