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Inherently Functionalized Carbon from Lipid and Protein-Rich Biomass to Reduce Ultraviolet-Induced Damages in Bituminous Materials
ACS Omega ( IF 3.7 ) Pub Date : 2020-09-23 , DOI: 10.1021/acsomega.0c03514 Amirul Rajib 1 , Elham H Fini 1
ACS Omega ( IF 3.7 ) Pub Date : 2020-09-23 , DOI: 10.1021/acsomega.0c03514 Amirul Rajib 1 , Elham H Fini 1
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This paper examines the merits of using an inherently functionalized carbon, referred to as biochar as a free radical scavenger. The biochar was made from thermochemical liquefaction of a blend of algae (rich in protein and nucleic acids) and manure (rich in lipid). Here, we studied biochar’s efficacy as a free-radical scavenger and ultraviolet blocker to qualify it as an anti-aging additive in construction, including roofing shingles made from the bituminous composite. The study’s results show that the addition of biochar to bitumen significantly reduced the aging of bitumen. All tested biochars made from various relative proportions of algae and swine manure were found to be effective at reducing the extent of aging; however, the biochar made from algae alone was the most effective. The algal biochar was found to be an effective antiaging additive delaying aging up to 36%, as evidenced by lower rheology and the chemistry-based aging index compared to those of control bitumen after being exposed to the same aging protocol. Algal biochar was found to be more effective than other studied biochar scenarios owing to its inherently functionalized nature. The latter result could be attributed to the high surface area and rich phenol functional groups in algal biochar, turning it into an effective free-radical scavenger. The study outcome highlights the applicability of this inherently functionalized carbon referred to as biochar in construction to enhance sustainability while promoting the circular economy and the biomass value chain.
中文翻译：
来自脂质和富含蛋白质的生物质的固有功能化碳可减少沥青材料中紫外线引起的损害
本文研究了使用固有功能化碳（称为生物炭）作为自由基清除剂的优点。生物炭是由藻类（富含蛋白质和核酸）和粪便（富含脂质）的混合物热化学液化制成的。在这里，我们研究了生物炭作为自由基清除剂和紫外线阻断剂的功效，以使其成为建筑中的抗老化添加剂，包括由沥青复合材料制成的屋顶板。研究结果表明，在沥青中添加生物炭显着减少了沥青的老化。所有测试的生物炭均由不同相对比例的藻类和猪粪制成，可有效减少衰老程度；然而，仅由藻类制成的生物炭是最有效的。研究发现，藻类生物炭是一种有效的抗老化添加剂，可延迟老化高达 36%，这一点可以从暴露于相同老化方案后的对照沥青相比较低的流变学和基于化学的老化指数得到证明。由于其固有的功能化性质，藻类生物炭被发现比其他研究的生物炭方案更有效。后者的结果可归因于藻类生物炭中的高表面积和丰富的酚官能团，使其成为有效的自由基清除剂。研究结果强调了这种被称为生物炭的固有功能化碳在建筑中的适用性，以增强可持续性，同时促进循环经济和生物质价值链。
更新日期：2020-10-06
中文翻译：
来自脂质和富含蛋白质的生物质的固有功能化碳可减少沥青材料中紫外线引起的损害
本文研究了使用固有功能化碳（称为生物炭）作为自由基清除剂的优点。生物炭是由藻类（富含蛋白质和核酸）和粪便（富含脂质）的混合物热化学液化制成的。在这里，我们研究了生物炭作为自由基清除剂和紫外线阻断剂的功效，以使其成为建筑中的抗老化添加剂，包括由沥青复合材料制成的屋顶板。研究结果表明，在沥青中添加生物炭显着减少了沥青的老化。所有测试的生物炭均由不同相对比例的藻类和猪粪制成，可有效减少衰老程度；然而，仅由藻类制成的生物炭是最有效的。研究发现，藻类生物炭是一种有效的抗老化添加剂，可延迟老化高达 36%，这一点可以从暴露于相同老化方案后的对照沥青相比较低的流变学和基于化学的老化指数得到证明。由于其固有的功能化性质，藻类生物炭被发现比其他研究的生物炭方案更有效。后者的结果可归因于藻类生物炭中的高表面积和丰富的酚官能团，使其成为有效的自由基清除剂。研究结果强调了这种被称为生物炭的固有功能化碳在建筑中的适用性，以增强可持续性，同时促进循环经济和生物质价值链。
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