A method for extracting succinic acid using succinic acid fermentation broth

Abstract

The invention relates to a method for extracting succinic acid using a succinic acid fermentation liquid, the extraction method being (1) preparation of a succinic acid fermentation liquid (2) converting succinate into diammonium succinate by using ammonia gas Re-acidification treatment of succinic acid fermentation broth (3) extraction of succinic acid (4) introduction of magnesium salt ammonia production process and bipolar membrane electrodialysis recovery acid-base process, recycling evaporated water, ammonia gas, magnesium carbonate suspension, Hydrochloric acid; the intermediate product of diammonium succinate in the process realizes clean production in the process, and at the same time avoids the use of resin exchange in the traditional process to convert diammonium succinate into succinic acid, resulting in a large amount of sewage discharge problems, and reduces the difficulty of the process, it is a closed clean production process.

Description

technical field [0001] The invention relates to a method for extracting succinic acid through a diammonium succinate process using a succinic acid fermentation broth. The invention belongs to the field of biochemical technology. Background technique [0002] Succinic acid (succinic acid), also known as succinic acid, widely exists in organisms, is an important dibasic organic carboxylic acid, and is also an important metabolite of the microbial tricarboxylic acid cycle glycolysis pathway. At present, succinic acid can be prepared by microbial fermentation. [0003] In the process of preparing succinic acid by microbial fermentation, many different post-extraction methods have been produced according to the types of microorganisms and different fermentation processes. [0004] The process of separation and purification is to remove insoluble impurities, convert succinate into free succinic acid, and increase its concentration to the required process. A separation and extra...

AI Technical Summary

Problems solved by technology

This method uses the traditional process of resin exchange, resulting in a large amount of sewage discharge, and when recovering ammonium salts that can be used as fertilizers, all the washed water needs to be evaporated to dryness, resulting in high recovery costs.

The entire process is not closed, and the salts and hydrochloric acid used in the process cannot be recovered, resulting in waste of auxiliary materials and environmental pollution.

This method is not suitable for industrial production requirements