Refractory & Ceramic Materials Division (RCMD), Central Metallurgical R&D Institute (CMRDI), P.O. Box 87, Helwan, 11421, Cairo, Egypt.
Refractory & Ceramic Materials Division (RCMD), Central Metallurgical R&D Institute (CMRDI), P.O. Box 87, Helwan, 11421, Cairo, Egypt.
J Environ Manage. 2021 May 1;285:112094. doi: 10.1016/j.jenvman.2021.112094. Epub 2021 Feb 14.
Nowadays, the disposal of industrial wastes is an ablaze issue worldwide, especially those containing hazardous materials. Lead silicate glass waste (LSG) produced during lead crystal glass manufacturing, which contains about 30% of toxic lead compounds, belongs to this category. This work aims to adopt an innovative clean method to convert this waste into novel advanced ceramic materials via an environmental friendly method. Chromia CrO and hematite FeO ceramics with different content (0, 5, 10, 15%) are added separately to the solid wastes of LSG recovered from national crystal glass industry to obtain various ceramics/LSG composites by pressureless sintering methods. Different properties of the produced composites are evaluated in terms of phase's identification and microstructural features. Optical properties in terms of absorbance, reflectance, band gap (E), refractive index (n) and photoluminescence (PL) are investigated. Magnetic and electrical properties are inclusively studied. Results indicated that, an addition of chromia and hematite as well as increasing their content to 15% has enhanced the microstructural features, optical, electrical and magnetic properties of the obtained composites. CrO/LSG composites are considered as promising optical and electrical materials. However, FeO/LSG composites showed the highest optical and magnetic properties. They are strongly recommended in optoelectronic and magneto-optical applications.
如今，工业废物的处理是一个全球性的热点问题，特别是那些含有有害物质的工业废物。在生产铅晶质玻璃过程中产生的硅酸铅玻璃废物（LSG）就属于此类，其中含有约 30%的有毒铅化合物。本工作旨在采用一种创新的清洁方法，通过环保的方法将这种废物转化为新型先进陶瓷材料。将来自国家水晶玻璃工业的 LSG 回收的固体废料中分别加入不同含量（0、5、10、15%）的氧化铬 CrO 和赤铁矿 FeO，通过无压烧结法获得各种陶瓷/LSG 复合材料。通过物相鉴定和微观结构特征来评估所制备复合材料的不同性能。研究了吸收、反射、带隙（E）、折射率（n）和光致发光（PL）等光学性能。综合研究了磁性和电学性能。结果表明，添加氧化铬和赤铁矿并将其含量增加到 15%可以提高所获得复合材料的微观结构特征、光学、电学和磁学性能。CrO/LSG 复合材料被认为是有前途的光学和电学材料。然而，FeO/LSG 复合材料表现出最高的光学和磁性性能。建议将它们应用于光电和磁光领域。
