produce a lactate fermentation process, as close to neutral pH value of the fermentation

 Produce a lactate fermentation process, as close to neutral pH value of the fermentation. Need a certain lactate into lactic acid, lactate by direct addition of sulfuric acid to the solution, and can be made of lactic acid, a byproduct of the crystalline Ethyl lactate calcium sulfate. Was removed by filtration methods can, of course, can be used as calcium sulphate dihydrate gypsum ground perfusion, such as dry wall, cement raw materials and agricultural fields. Gypsum is generated in the production process of the low value of the salt, but this method is cost effective, because calcium hydroxide and sulfuric acid, low cost, and gypsum can be used for other industrial purposes. Others will alkalization and potassium lactate  rocesses linked to the two methods have been tried, for example, ammonia, adjusting pH, acidified with sulfuric acid to obtain a by-product ammonium sulfate, ammonium sulfate can be used as fertilizer. Because ammonium hydroxide, calcium than high prices, while high-value by-product ammonium sulfate just to make up this gap, and with respect to calcium sulfate soluble in water, which facilitates separation.