US-Egypt Cooperative Research: Recovery of Sodium Hydroxide from Black Liquor Effluents of Paper Mill

说明：该奖项将支持犹他州Bountiful应用研究公司总裁Harrison Cooper博士和埃及Helwan中央冶金研究与发展研究所（CMRDI） El-Sayed Abdel-Aal博士之间的合作研究项目。pi将继续研究一种新的木质素沉淀工艺，该工艺基于在黑液中加入水溶性表面活性聚合物并通过添加磷酸来酸化样品。这些聚合物的使用很可能通过产生易于分离的混凝剂来促进木质素从液中分离。pi将考虑对磷酸进行除氟处理，以便回收用于动物饲料的富p木质素材料。项目范围：开发一种处理黑酒的方法，减少有毒萃取物，使残液更适合生物处理。高价值的副产品将可用作土壤改良剂和肥料。处理和回收工艺的应用将提高纸浆厂的盈利能力。在美国，处理非木质黑液的能力可以导致利用草秆、红麻和黄麻等纤维。发展一种在经济上与不发达地区的小规模制浆作业相匹配的工艺的潜力将大大提高区域经济，并大大减少这些设施对环境的影响。Abdel-Aal博士在木质素分离过程方面有着长期的经验，而Cooper博士在将工程过程应用于环境问题的可行解决方案方面有着特殊的经验。这两人将在项目过程中得到来自CMRDI和佛罗里达大学的顾问的支持。该项目得到了美国-埃及联合基金项目的支持，该项目向两国的科学家和工程师提供赠款，以开展这些合作活动。

0317653CooperDescription: This award is to support a cooperative research project between Dr. Harrison Cooper, President, Bountiful Applied Research Corporation, Bountiful, Utah and Dr. El-Sayed Abdel-Aal, Central Metallurgical Research and Development Institute (CMRDI), Helwan, Egypt. The PIs will pursue an investigation of a new lignin precipitation process based on adding water-soluble surface-active polymers into black liquor and acidifying the sample by adding phosphoric acid. The use of these polymers is likely to facilitate the separation of lignin from liquor by producing an easily separable coagulant. The PIs will consider defluorination of phosphoric acid enabling recovery of P-rich lignin material for use in animal feeds. Scope: The project will develop a method to treat black liquors and diminish toxic extractives thus making the residual liquor more amenable to biological treatment. High value by-products will be usable as soil amendments and fertilizers. Applications of the treatment and recovery process will improve pulp mill profitability. The ability to process non-wood black liquor can lead to utilization of fibers such as grass straw, kenaf and arundo donax in the United States of America. The potential of developing a process that economically matches small scale pulping operations in underdeveloped areas will greatly enhance regional economics and substantially reduce the environmental impact of these facilities. Dr. Abdel-Aal has a long experience in the lignin separation process, while Dr. Cooper has particular experience in the application of engineering processes into viable solutions to environmental problems. The two will be supported by advisors from the CMRDI and the University of Florida in the course of the project. This project is being supported under the US-Egypt Joint Fund Program, which provides grants to scientists and engineers in both countries to carry out these cooperative activities.