Preparation method of soil heavy metal passivator based on electrostatic interaction

• Main Authors: ZHOU YUMEN, YANG XIAOJUN, SONG YUYING, DENG BO, ZHANG WEIYI, ZHU CHUNYAN, FENG DONGSHENG, HAN YIYI, WANG JINGZHI
• Format: Patent
• Language: Chinese; English
• Published: 11.01.2022
• Subjects: ADHESIVES; CHEMISTRY; DYES; FERTILISERS; FERTILISERS CHARACTERISED BY THEIR FORM; MANUFACTURE THEREOF; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS; NATURAL RESINS; PAINTS; POLISHES

The invention discloses a preparation method of a soil heavy metal passivator based on electrostatic interaction. the passivator is prepared from, by weight, 30 parts of medical stone powder, 10-20 parts of quick lime, 10-20 parts of iron and manganese oxide, 10 parts of organic fertilizer, 5 parts of organic high-molecular polymer lignin-based acrylic acid water-absorbent resin, 10 parts of cation modified PMMA gel particles, And 10 parts of anion modified PMMA gel particles. All the components have a synergistic effect to efficiently reduce the content of heavy metals in soil by adsorbing metal ions or forming complexes, the acidity of the soil is adjusted through the organic acid, the organic fertilizer provides fertility for the soil, and the soil is comprehensively and efficiently improved. The method has the advantages of simple process, no pollution, sufficient raw materials, easiness in preparation, easiness in implementation, low price and the like. 本发明公开了一种基于静电作用的土壤重金属钝化剂制备方法，该钝化剂按重量份包括以下原料：麦饭石粉30份，