acid-extraction的意思|示意

The fucoidan product was obtained by pretreatment of algae powder with high concentration ethanol, diluted acid extraction, concentration under vacuum, ethanol precipitation and lyophilization.

采用高浓度醇溶液处理羊栖菜粉、稀酸提取、减压浓缩、乙醇分级沉淀和冷冻干燥等单元操作，可以获得褐藻糖胶产品。

Three pretreatments including air oxidation pretreatment, nitric acid oxidation pretreatment, ultrasonic pretreatment are used to increase the rate of humic acid extraction.

采用空气氧化预处理、硝酸氧化预处理、超声波预处理三种方法提高腐殖酸的提取率。

Rare earth elements in the aqueous leaching liquor of chlorinated mine mud from Sichuan West is of lower content, they can be separated by naphthenic acid extraction.

川西稀土矿泥氯化后水浸液中，稀土含量较低，可借助环烷酸萃取法分离出稀土元素。

Result:Higher ephedrine content was extract by using Suoshi extraction method and the acid water extraction method, which conforms to the industrialization production requirements.

结果：索氏提取法提取和水提取麻黄碱含量较高，适合工业化生产要求。

The technology of solid state fermentation and extraction of Fulvic acid with apple pomace has been studied.

本文对苹果渣固体发酵生产黄腐酸工艺及产物分离提取条件进行了优化研究。

The process of removing acetic acid from furfural wastewater by solvent extraction is studied in this paper.

本文研究了溶剂萃取法去除糠醛废水中醋酸的工艺过程。