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Abstract

A liquid crystal display (LCD) recycling process is needed to increase its efficiency by recovering the resources in addition to metals and plastics. This study investigates the pre-treatment process for recycling LCD glass. Recycling pre-treatment includes dismantling the LCD from the waste product, crushing the glass, and separating the glass particles from the impurities. Scanning electron microscopy confirmed that the oscillation milling process is more effective in maintaining uniform powder shape and size as compared to the cut milling process. The glass particles crushed by the oscillating mill, optimized at 1500 rpm, had a uniformly distributed particle size of less than 10 µm. These small particles were separated from the organic impurities, achieving a 98% pure powder that can be used as recycled raw materials. The proposed pre-treatment process for recycling LCD glass will enhance the ability to use waste glass as a valuable resource in the manufacturing of future displays.

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Authors and Affiliations

Seyul Kim
Yubin Kang
Leeseung Kang
Hyun Seon Hong
Chan Gi Lee
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Abstract

Environmental problems are considered a serious situation in modern construction. Reusing and recycling glass wastes is the only method to decrease waste produced. There is growing environmental compression to decrease glass waste and to reprocess as much as possible. In this investigational work, the effect of partially substituting crushed waste glass in concrete is considered. The study investigates crushed waste glass used as a partial replacement of fine aggregate for new concrete. recycled glass waste was partially replaced as 5%, 10%, 15%, 20%, 25%, 30, 35, 40%, 45%, 45% and 50% and tested at 7, 14 and 28 days of curing at 20◦ for mechanical properties and compared with those of controlled mix. The compressive strength, splitting tensile strength and flexural forces and static elasticity modulus of specimens with 20% waste glass content was 30%, 19.41%, 9.13% and 10.12%, respectively, which is higher than the controlled mix at 28 days. The outcomes displayed that the maximum rise in strength of concrete occurred when 20% replacement with glass crush. It is found that crushed waste glass can be used as fine aggregate replacement material in concrete production.
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Bibliography

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Authors and Affiliations

Salam Salman Chiad Alharishawi
1
ORCID: ORCID
Nagham Rajaa
2
ORCID: ORCID
Aqeel Raheem Jabur
3
ORCID: ORCID

  1. Mustansiriyah University, College of Engineering, Environmental Engineering Department, Baghdad, Iraq
  2. Mustansiriyah University, College of Engineering, Highway and Transportation Engineering Department, Baghdad, Iraq
  3. Mustansiriyah University, College of Engineering, Civil Engineering Department, Baghdad, Iraq

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