Chapter 234 (1/2)

When it comes to arsenic, we have to mention centipede grass.

It is a difficult problem for scientists to remove heavy metal pollution such as arsenic and mercury for a long time.

But later, scientists found a strange phenomenon: in some arsenic polluted land and water, most plants have died, but Centipedegrass, a fern, is safe.

After testing, the scientists found that Centipedegrass not only has a strong super adsorption capacity for arsenic, but also has a certain effect on the adsorption of other heavy metals.

After testing, centipede grass, which is rich in arsenic, is 200000 times higher than ordinary plants, and it is a plant with high arsenic tolerance.

If centipede grass is used to extract arsenic and other heavy metal pollutants from soil, and then harvest and burn, the amount of toxic waste gas will be greatly reduced, and the ash after incineration can be turned into mineral resources for smelting.

Under ideal conditions, the arsenic content in plants can be as high as 20%, which is equivalent to a mineral resource.

And as far as Zhou Wen knows, there are already scientists studying ”farming metals.”.

, Alan Beck, the botanist of the Melbourne University, is practicing the first mock exam.

He planted a hyperaccumulated nickel tree in a 50 acre nickel contaminated area. After cutting the bark, it would flow out a blue-green liquid, like gum. It contained 14 nickel, which was higher than the ore content of nickel smelters.

The metal is then extracted and purified for sale.

In addition, the smelter has to pay him high environmental treatment fees.

……

Zhou Wen looked at the plants which were enriched in arsenic.

The black youth followed. He pointed to the roots of several coniferous trees that he had cut off from the middle and said, ”the last time I cut down these shrubs, the slurry on them was stained on my hands. It was very uncomfortable at that time. Then I went home, and soon my hands became like this.”

Zhou Wen studied it carefully.

This is a shrub called ”needle tree” in the local area. It is covered with sharp barbs. It is very ugly and widely grows in the rainforest.

Although it is a shrub, its root system is quite developed. It belongs to deep root plant. Its main root can be more than 5 meters underground, and some can reach 10 meters.

So, if you don't expect, there should be arsenic ore underground. Otherwise, it can't explain the area where arsenic plants grow, but other plants are not affected.

There are more than a dozen needle trees here.

Zhou Wen and his bodyguard asked for a dagger and cut the stem of the needle tree.

Needle tree: ”knock you It's killing me. ”

Zhou Wen: ”shut up, I'm collecting samples!”

The needle tree is obviously scared, with its intelligence quotient obviously can not understand, why can primates understand its language?

At this time, it was cut on the stem, outflow of milky white liquid, ”tick tock” of the fall on the ground.

Zhou Wen, while collecting samples, asked, ”by the way, is there an arsenic mine underground?”

The needle tree doesn't speak.

Zhou Wen broke a branch with a click.

Needle tree: ”knock you It's killing me. ”

Zhou Wen: ”is there an arsenic mine underground? If you don't say it again, I'll uproot you in a moment

The needle tree trembled.

Zhou Wen: ”do you have any?”

Needle tree: ”yes!”

Zhou Wen: ”then I won't pull you out today.”

After collecting the samples, Zhou Wen turned his head and asked, ”where is this kind of similar plant?”

The old black man with moderate arsenic poisoning pointed to the East and said a few words. The young black translator said, ”he said there are still some trees in the East. He was poisoned there.”

”About how far?”

”About a mile.”

Zhou Wen looked at the sky, but there was still time. He said, ”let's take me there and have a look.”

Black youth are lazy and unwilling to take him to see them, including those local people who are not willing to run away.

Zhou Wen said to the black youth, ”you take me to have a look, and I will help you to cure it. I believe you have also gone to the hospital for treatment, this metal local poisoning is very difficult to cure, except me, no one can cure it! ”

The black youth discussed with you.

These people are relatives with close ties. It is said that Zhou Wen can help young people and old people with hand diseases, and they all agree.

Zhou Wen with a security guard to follow the crowd toward the thorny woods, the rest of the people stay in place to guard the vehicles.

There was a small path that, according to the black youth who led the way, had been trodden out by South Africans who had come to their village to steal the baobabs, which belonged to the territory of bozvana.

One mile is about 1600 meters.

It took nearly an hour to get to the place in the rugged, thorny jungle.