谷氨酸提取技术及其废液资源化清洁生产研究进展

Research Progress of Glutamate Extraction Technology and Waste Liquid Recycling Clean Production

我国是味精生产和消费大国,味精生产过程中如何提高谷氨酸回收率、减少废液排放量和污染物浓度、提高废液资源化利用率是行业清洁生产发展长期关注的问题。目前,经过十几年的改造和发展,谷氨酸发酵清洁生产技术取得了一定的成果,但其进一步发展仍是行业面临的一个巨大挑战。文章在综合文献和行业发展的基础上,简述了谷氨酸提取和发酵废液处理的现状及存在的问题;从提高谷氨酸总提取回收率和从源头上减少酸碱使用量两个角度切入,总结了谷氨酸清洁生产技术的研究进展;根据利用方式总结并分析了发酵废液资源化方法及其应用特点,包括直接资源利用和微生物培养,为其综合利用提供了参考,并对未来的发展趋势进行了展望。

China is a large production and consumption country of monosodium glutamate.In the production process of monosodium glutamate,how to increase the yield of glutamate,reduce the discharge and pollutant concentration of waste liquid,and improve the utilization rate of waste liquid resource are the long-term concerns of the development of clean production in the industry.At present,after more than ten years of transformation and development,the clean production technology of glutamate fermentation has made some achievements,but its further development is still tremendous challenge for the industry.On the basis of literature and industry development,the present situation and existing problems of glutamate extraction and fermentation waste liquid treatment are summarized;the research progress of glutamate clean production technology is summarized from two aspects:improving the total extraction yield of glutamate and reducing the use of acid and alkali at the source;according to the utilization methods,the recycling methods and application characteristics of fermentation waste liquid are summarized and analyzed,including direct resource utilization and microbial culture,which has provided a reference for its comprehensive utilization,and the development trend of the future is prospected.