Water-soluble biomass heavy metal scavenger and preparation method thereof

Abstract

The invention relates to a water soluble biomass heavy metal capture agent and the preparation method of the water soluble biomass heavy metal capture agent. According to the preparation method, 1 to 40 parts of soyabean protein are added into 10 to 300 parts of water; the pH value is regulated to the acid state (the pH is smaller than 3) or the alkaline state (the pH is greater than 8); the temperature is controlled to be 30 to 70 DEG C; dissolving is performed for 1 to 2 hours; then, 1 to 20 parts of cross-linking agents are added; cross-linking reaction is performed for 3 to 8 hours; next, 1 to 80 parts of alkali and 10 to 100 parts of carbon disulfide are added; dithiocar-bamate synthesis reaction is performed for 1 to 3 hours, and the novel water soluble biomass heavy metal capture agent is obtained. The water soluble biomass heavy metal capture agent can realize environmental degradation after being abandoned; the harm of a great amount of non-degradable synthetic macromolecule heavy metals can be relieved; the secondary environment pollution caused by capture agent wastes is avoided; the capture capability is high; the settling velocity is high; the stability is high.

Description

technical field [0001] The invention belongs to the field of heavy metal scavenger, in particular to a water-soluble biomass heavy metal scavenger and a preparation method thereof. Background technique [0002] Heavy metal ion scavenger is an organic compound with chelating functional groups, which can selectively capture, separate and precipitate heavy metals from solutions containing metal ions. The main synthesis route of polymer capture agents is to use synthetic polymers or natural polymers as molecular skeletons, and introduce capture functional groups through chemical reactions. At present, the heavy metal scavengers that are widely used in actual research mainly include xanthate and dithiocarbamate derivatives (DTC), and DTC derivatives are the most widely used. [0003] At present, the main direction of the research and application of heavy metal scavenger is to improve efficiency, reduce chemical consumption, reduce pollution, enhance environmental awareness, stre...

AI Technical Summary

Problems solved by technology

So far, the prepared heavy metal scavenger still has the disadvantages of weak capture ability, low sedimentation velocity, poor stability, etc., and cannot be popularized and applied in practice.