Water-retaining agent of soil prepared from feather meal and method for preparation thereof

Abstract

The invention provides a method of preparing soil water-loss reducer with feather powder. The invention is characterized in that feather powder is made of the waste feather of chicken, duck and other poultries. Make the feather powder steeped in the sodium sulfite solution of normal temperature for 24 hours and filtering. Under 80~90 Deg. C, hydrolyse the filter residue in 2%~5% natrium hydroxydatum solution and get the water soluble protein which molecular weight is 5000~10000. Implement the hydrophilicity modification with peroxyacids and get the modifying hydrolysis feather protein solution. And mix the feather protein solution with acrylamide vinyl polymer solution, process cross bonding, graft copolymerization under the action of redox initiating agent and get the water-absorbing gel. The said soil water-loss reducer is finished after granulating, drying and disintegrating.

Description

technical field

[0001] The invention relates to a method for preparing a biodegradable soil water-retaining agent by modifying and grafting natural waste polymers, which belongs to the field of biofunctional polymer materials. Background technique

[0002] In arid and semi-arid areas such as Northwest my country, whether it is planting crops or afforestation, there will be an irrigation problem. Due to the limited water holding capacity of the soil, water from rainfall or irrigation is easily lost through soil infiltration. Therefore, on the one hand, plants often face water shortage, and on the other hand, the utilization efficiency of the moisture brought to the soil by rainfall or irrigation water is very low, resulting in quite serious waste. If a material can be used to fully absorb and retain the water brought by irrigation or rainfall, and then release the water when the soil is dry, the water use efficiency can be improved, while the frequency of irrigation can be r...