The experiment Li Yuanjia mentioned is actually very simple.
The plant ash is washed with water, and after removing the impurities, what remains is sodium carbonate... at least a large part of the sodium carbonate component.
After the sodium carbonate reacts with slaked lime, the calcium carbonate generated will precipitate out, leaving a sodium hydroxide solution. The sodium hydroxide can react with the magnesium chloride in the sea salt to form a magnesium hydroxide precipitate. Then the sodium carbonate itself can react with the magnesium chloride in the sea salt.
Calcium chloride interacts with each other to form calcium carbonate precipitation...
Of course Li Yuanjia knew that there were other impurities in sea salt, but unfortunately, these were the only two he could think of.
So, next he needs Ma Liang and the students from these schools.
Li Yuanjia would not give them the answer directly... In fact, he only knew that this method existed. He did not have a precise concept of how to operate it and in what order. So after careful consideration, Li Yuanjia decided to
The pressure of the test was placed on Ma Liang and others.
The papermaking workshop outside the city has accumulated a lot of good products in recent years.
In order to find the most suitable material for papermaking, they have not only tried countless kinds of bark and grass roots over the years, but also used countless kinds of minerals, accumulating a wealth of experience and data - although the most important thing about papermaking is
Plant fibers, but to make them stick together better, other additives are needed.
The contents in these small bags are what Wang Pu and the others have accumulated over the past few years.
Each one is soluble in water.
What Ma Liang and the others need to do is use these things to react with sea salt to find a way to remove the bitterness and astringency in it.
Very simple, but also very complex.
The simple thing is that the operation itself is not very troublesome. You only need to dissolve the sea salt in the water, then dissolve these minerals in the water, and then let the two react; but at the same time, this operation is also extremely complicated, because there are two things in front of you.
There are more than a dozen kinds of raw materials, which ones are useful, and in what order they should be used, we need to explore and experiment...
"This is a very important experience for them."
After the little guys carried away the sea salt and more than 20 bags of things, Li Yuanjia said solemnly to Ma Liang: "So you have to keep an eye on me the whole process. Not only do you have to be patient and complete all the steps carefully, but also
You must keep good records... I want to see the complete record form later, do you understand?"
"I understand, Your Majesty."
After taking a deep breath, Ma Liang nodded with some trepidation.
He knew very well that this was a test for him, and it was also a test of the achievements of the Royal Academy in the past two years!
If the result satisfies the king, then it is conceivable that he will be rewarded, and it will definitely be an exciting reward. But if the result is a mess and the king is unhappy...
Thinking of this, Ma Liang's expression became more solemn.
After waving Ma Liang to leave, Li Yuanjia narrowed his eyes slightly and sighed secretly in his heart.
If he could have a few useful talents under his command, why would he need to give special instructions for this kind of thing, or even help design experimental procedures? With just one order, he might be able to get a result in just a day or two, but
It is a pity that Li Yuanjia has only a few people under his command now, and they are all still half-experienced, so he needs to take direct action frequently.
So after thinking about it, he could only smile and shake his head: "I hope this group of little guys can have some useful talents, otherwise it will be too difficult for me to just rely on Ma Liang and Li Zhong...
"
For his own ease in the future, Li Yuanjia chose to be more difficult now.
Maybe he could do the preliminary purification of sea salt by himself in a few days. After all, it is too easy to filter out those insoluble magazines, and he also has an idea for removing calcium chloride and magnesium chloride. The rest just requires some simple operations.
But he hopes to use this method to let the students in the school learn something, or at least leave a way of thinking in their hearts, a way of thinking that is completely unlearnable in this era...
…
While Li Yuanjia was thinking about the students in her small school, Fang Fengzhu had already met several of her sisters and chatted happily for a long time.
There were not many people, only three other than Fang Fengzhu himself.
Among them is Li, the mistress of the Duke of Ying's Mansion, who is Li Yuanjia's clan sister and also his aunt... Ahem, although the relationship is a bit messy, there is no doubt that she is the one who has the closest relationship with Li Yuanjia. There is also another one.
It was Wei Shuyue, the eldest daughter of Duke Zheng Wei Zheng's family, and the one who had the best relationship with Fang Fengzhu.
As for the third one, who is also very close to Fang Fengzhu, she is his eldest brother's wife Du Shi.
Fang Fengzhu had nothing to hide in front of these three people. After chatting for a while, he quickly told the story, then he blinked his big eyes and asked with a smile: "Sisters, if I specially buy a
If this house is used as a club, would you be willing to come and sit there often?"
"this……"
After listening to her words, the three women looked at each other, feeling very surprised.
Why did this girl suddenly have such an idea?
Although the atmosphere of the Tang Dynasty was open, and women could get together every day, or travel together, or even hold poetry gatherings, etc., the idea of building a club specifically for everyone to gather was really too new. After all, this
There are so many places built specifically for men in the world, but I haven’t heard of places built specifically for women?
So after a moment of silence, Mrs. Du couldn't help but smile and said: "Fengzhu, your idea is quite new, but... it's not troublesome for us to get together usually. It's convenient to make an appointment at anyone's house. Why do you have to
Why build a place like this specifically?”
Blinking her eyes, Fang Fengzhu remembered Li Yuanjia's words and said with a smile: "The reason is very simple, because you can go at any time! Sister-in-law, think about it, if we usually get together, we have to make an appointment many days in advance, and we have to find someone
A day when everyone is free... If there is this club, everyone can go whenever they want, or even find a fixed day, such as the last day of every month or something, how convenient it would be."
"Well……"
After thinking for a while, Du Shi smiled bitterly and said: "What you said makes sense, but...what can we do if we go? We can't just sit there and chat every time we go, right?"
After hearing what she said, Wei Shuyue and Li nodded at the same time, deeply agreeing.
It's really fun to get together once in a while and chat with everyone, but if you buy a house or something just for this purpose, that's too exaggerated!
"Hehe, of course not!"
Fang Fengzhu knew what was going on and quickly said with a smile: "Don't forget, the playing cards and the Landlord were both made by our family... Let me tell you the truth, there are still a lot of fun things that I haven't brought out yet.
! When the time comes, they will all be brought to the club... Moreover, what if one or two chefs from our palace are arranged there to prepare some delicious food every day? "
"Huh? In this case...it sounds good!"
After hearing Fang Fengzhu's very tempting words, the eyes of the other three people lit up at the same time.