中文

New nanomaterials can repair heavy metal pollution in soil

Hefei material science research institute of Chinese academy of sciences researchers developed a new type nanocomposites, effectively repair the harmful heavy metal ions in the soil, and not more than 30 yuan per acre cost.The research was recently published in the American chemical society's core journal, the American chemical society's sustainable chemical and engineering.

It was reported that about 30% of the earth's ice-free land is acidic soil, causing great loss to agricultural products , aggravating the harm of heavy metal to human body and pollution to the environment, which is China and even the world Key issues to be addressed in the fields of agriculture and the environment.

At present,There are two kinds of soil restoration methods: plant repair and chemical repair, but has a high cost, long cycle, low efficiency of defect, this is also the difficulty that restricts the acid soil and heavy metal pollution control.

Wu Zhengyan researcher developed a composite nano materials, rematching clay, biochar and other natural materials, so that it changed from state of aggregation to state the mesh
structure, which promoted soil ph value to neutral, and efficiently enriched and scraping of the harmful heavy metal elements in the soil. At the same time, harmful elements such as hexavalent chromium will be change into trivalent chromium.

According to introducing, this new type of soil restoration material cost only 10 to 30 yuan per acre. Because it's easy to use,the repair process is incorporated into the farming process. It's more efficient compared with the traditional repair method and can be made into powder, liquid, granule and other forms.Experts say the material has a broad prospects and is expected to achieve mass production next year.