Chen Jianzhang was prepared and took some technicians to visit the selected laboratory.

Although only a few labs were entered, and the others were looking at the windows from their stomachs, even then, a group of people watched very seriously.

As for looking at the flowers, how many things can be seen, that is the level of the individual.

The rest are either businessmen or officials, who don't know much about technology, and any technical parameters can only be said to be a string of data in their eyes, so they did not go to the laboratory to make up, but were more interested in the switchgrass base and the bioplastic extraction workshop.

At the end of the day, what they want to see most is how Jiagu is controlling costs.

Even if you can't buy Jiagu environmental technology, you may be able to get some inspiration from visiting their industrial production methods.

With such an idea, the visiting company executives, more or less followed by technical deputies, followed Qi Zheng to the plasticized switchgrass trial planting base in Jiagu.

The trial planting base is not in the park of Jiagu headquarters, but in the suburbs of the city.

From a distance, bunches of plants with green leaves standing upright, and a misty flower spike on the head, like an oil painting painted in the field, the color is rich, giving people a dreamlike feeling.

Switchgrass is a grasshopper, so it is somewhat similar in appearance to the same rice, except that it does not have grains that can be used as food, and it grows taller, up to 1-2 meters high. It is quite ornamental, and it is no wonder that in recent years, it has become a rising star among the ornamental grasses in the garden.

However, although the trial site looks like a beautiful sight, in fact, it was once a landfill.

"The landfill? I can't really see it at all. Mr. Hu of Everbright Environmental Protection looked at the base with admiration and said in surprise.

"Well, if you peel back the top soil, you can see the accumulation of garbage. In fact, five years ago it was like this. Qi Zheng pointed to a set of photos on the display board of the base.

The photo shows the plantation base before it was developed. It can be seen that there was a lot of garbage piled up on the ground at that time, and flies were flying in piles, and the scavengers picked up the garbage without any protective measures......

Even if you just look at the photos, you can smell the stench, but now the green and fresh air are like turning the world upside down.

It's hard to believe that the ground under their feet is buried with millions of tons of garbage.

The more than 500-acre closed landfill is just one of more than 2,000 legal landfills in China. And in order to deal with the waste generated by nearly 1.4 billion people every day, more and more landfills are running out of capacity.

Although incineration is becoming the mainstream method of waste disposal in China, it is also the mainstream method in developed countries. But incineration is not the end, and humanity must find new ways to deal with the enemies it has created – whether it's new garbage or buried garbage.

Because despite all the protective measures, the soil, water and air pollution caused by the garbage site inevitably affects the surrounding ecological environment. Waste is slow to decompose through landfills – someone has excavated and sampled old landfills and found that the contents printed on old newspapers from 40 years ago are still legible. After the landfill is closed, the area needs to be monitored and maintained for 20-30 years, which is also a lot of pressure on the regulatory authorities.

How to increase the cost of "making" garbage for citizens and make citizens responsible for throwing away garbage or paying for it is a problem for the government to consider.

The plasticized switchgrass planting base in front of you is a perfect answer sheet handed over by Jiagu.

"Although because the domestic garbage sorting work is not in place, there will be a lot of kitchen waste and plastic mixed in the garbage. For garbage combustion, it is easy to burn inadequately, producing toxic and harmful gases such as dioxins. But for plasticized switchgrass, it's a huge 'granary'. Qi Zheng smiled.

As soon as the words fell, someone asked: "The landfill garbage is dumped, compacted, and covered with soil, and because of this, it is difficult to decompose." Can plasticized switchgrass really make effective use of garbage resources?"

"That's a good question. Firstly, switchgrass is a plant with deep roots, and we did not choose it as the main body for the production of bio-based plastics, and secondly, we break down plastics and kitchen waste into small molecule fertilizers by punching holes and putting plasticizers and other biological bacteria for the growth of switchgrass. Qi Zheng seemed to be very open to explain.

"What other organisms are there, and how do you solve the ...... of environmental factors inhibiting microorganisms?"

"That's a technical secret. Qi Zheng interrupted the questioner with a smile.

There was a sigh of disappointment.

Sinopec's Qiao Anqing communicated with his deputy for a moment, and asked, "Dong Qi, is it convenient to tell me the bioplastic yield per mu of switchgrass?"

Qi Zheng is kind as a streamer: "The plasticized switchgrass in front of everyone, the quality of polylactic acid plastic particles accounts for 31% of the plant quality, and the annual output of dry switchgrass reaches more than 2 tons/mu, theoretically, one mu of plasticized switchgrass can get 600 kg of polylactic acid." ”

Qiao Anqing thought thoughtfully: "This is the most ideal data, it also depends on whether the extraction method is efficient and whether the purity is ideal......

"Joe is right. Qi Zheng gave it a thumbs up: "However, the plasticized switchgrass varieties we have cultivated also have the advantage of being easy to handle - the lignin content is only 3.5%, which is much lower than the normal 6%-9%, which makes it less troublesome to extract pure plastic particles." In fact, we have developed more than one extraction technology, such as solvent extraction, physical extraction, ......"

As soon as these words came out, the executives of various companies, especially those related to the petrochemical industry, all looked at the slender and upright willow grass in the base with bright eyes.

From the outside, it is completely impossible to see that this green plant, one-third of the body is made of plastic particles "piled up" - what is even more terrifying is the technological progress of Jiagu, the average plastic content of the same kind of willowgrass in the United States can only reach 5%, and some switchgrass can reach 7%, but it is only a very small case.

American researchers estimate that 20 percent of the mass of plastic pellets must be made up of switchgrass to be fully commercialized, and they have given a time frame of more than 10 years. Of course, it's definitely become a joke now.

However, they fully understand why Jiagu dares to say that the cost of growing polylactic acid in plants is only one-tenth of that of microbial fermentation.

After the "make-up lesson", we all know that switchgrass is a perennial plant, which can maintain continuous production for 10-15 years under good planting conditions.

If it is planted in a landfill, with Jiagu's plastic-deplasticizing bacteria and other "sharp tools", you don't even need to consider fertilization, you just need to properly replenish water.

Even if it is calculated according to the yield of 500 kilograms per mu, only 20,000 acres of land is equivalent to a 10,000-ton polylactic acid production plant - you know, in the face of the growing global market demand, many polylactic acid production plants have emerged in China, but most of them are 1,000-ton scale.

Sunlight-driven growth and waste providing the nutrients needed are the perfect way to achieve the goal of "obtaining higher biomass with minimal energy input".

Environmentalists are excited about the "waste-to-treasure" technology they have been dreaming of, and the petrochemical industry is also interested in what may be the cheapest way to produce bio-based plastics.

PetroChina's Ma Kui was very satisfied, and while he was satisfied, he also noticed something unusual: "Dong Qi, I see that the employees in the planting base seem to be very old, is this a specially trained old employee?"

Qi Zheng smiled, waved his hand and said: "Mr. Ma, you misunderstood, they were all waste pickers before, we rectified this landfill, and also drove the employment of some poor households in the surrounding area......"

A group of people suddenly.

However, everyone has their own feelings about this.

What some people see is another advantage of growing plasticized switchgrass - easy to manage. A group of elderly people who can't do any heavy physical work can take care of the plasticized switchgrass base, which at least shows that the plasticized switchgrass is easy to take care of.

What some people see is that they can use it to get government support. Ordinary landfill land can no longer be commercially developed, and can only be built into ecological parks or left to be abandoned. If the plasticized switchgrass base can be built, it can not only solve environmental problems, but also drive the employment of surrounding farmers - don't you see, the officials who are visiting are already dancing with their eyebrows?

Of course, there are also people who are only thinking about whether they can make money, and how to obtain Jiagu's technology, as for whether the environment is safe or not, and whether the people are happy or not, they are businessmen, what does it have to do with them?

......