STTR Phase I: Sustainable Glass Raw Materials and Processes for the Upcycling of Waste Concrete into SIlicate Glass

STTR 第一阶段：可持续玻璃原材料和将废弃混凝土升级为硅酸盐玻璃的工艺

• 批准号: 2023638
• 负责人: Bernard Pike
• 金额: $ 25.6万
• 依托单位: CONOX, LLC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-15 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2023638&HistoricalAwards=false
• 关键词: STTR; Phase; Sustainable; Glass; Raw

The broader impact of this Small Business Technology Transfer (STTR) Phase I project is to provide waste concrete as a new raw material source for the glass and other industries. It is estimated that 2.2 billion tons of waste concrete is generated globally each year. About 70% of the construction waste generated in the US is concrete, but it is not typically used as a raw material for glass production or other chemical processes. Using concrete as a raw material reduces its contribution to landfills as well as the need for mining virgin raw materials., and contributes environmental benefits. This STTR Phase I project will study processes to prepare furnace-ready concrete for glass production.This STTR Phase I project will study the feasibility of waste concrete as a raw material constituent (feedstock) for calcium-silicate glass and glass-making. Environmental benefits are possible because concrete contains the same key oxides used in glass making (silicon, calcium, aluminum and iron oxides) as well as sulfur compounds (e.g. gypsum mixed with the cement to regulate setting, and therefore can potentially serve as a candidate raw material in the production of calcium-silicate soda lime and calcium-borosilicate glasses.Research objectives include: 1) characterize variations in chemical composition from industrially relevant sources; 2) determine variation in contaminant concentrations; 3) demonstrate processes and methods to address contaminant variations' 4) characterize the specifications for a furnace-ready waste concrete glass batch; 5) produce pilot batches of calcium-silicate soda lime glass; and 6) characterize variations in produced glasses.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这个小企业技术转让（STTR）第一阶段项目的更广泛影响是为玻璃和其他行业提供废弃混凝土作为新的原材料来源。 据估计，全球每年产生22亿吨废弃混凝土。 在美国，约70%的建筑垃圾是混凝土，但它通常不被用作玻璃生产或其他化学工艺的原材料。 使用混凝土作为原材料减少了其对垃圾填埋场的贡献以及对开采原始原材料的需求。并贡献环境效益。 本STTR一期工程将研究玻璃生产所需混凝土的制备工艺。本STTR一期工程将研究废弃混凝土作为硅酸钙玻璃和玻璃制造的原料成分（原料）的可行性。 环境效益是可能的，因为混凝土含有相同的关键氧化物用于玻璃制造（硅、钙、铝和铁的氧化物）以及硫化合物（例如，石膏与水泥混合以调节凝固，因此可潜在地用作生产硅酸钙钠钙和钙硼硅酸盐玻璃的候选原料。研究目标包括：1）表征来自工业相关来源的化学组成的变化; 2）确定污染物浓度的变化; 3）展示处理污染物变化的工艺和方法; 4）表征用于可用于造纸的废混凝土玻璃批料的规格; 5）生产硅酸钙钠钙玻璃的中试批料;该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。