Biogenic amorphous calcium carbonate for dye wastewater treatment and its preparation method and application

The synthetic biosource amorphous calcium carbonate induced by Bacillus licheniformis LRL007 solves the problems of low adsorption capacity and high cost of existing dye wastewater treatment materials, and achieves efficient and environmentally friendly dye wastewater treatment effects.

CN119432927BActive Publication Date: 2025-08-29HANGZHOU AOBAITAI BIOTECHNOLOGY CO LTD
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Patent Information

Application Number
CN202411581203.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-07
Publication Date
2025-08-29
Estimated Expiration
2044-11-07

AI Technical Summary

Technical Problem

The existing dye wastewater treatment materials have low adsorption capacity, high cost, difficult to reuse, and are sensitive to environmental factors, making it difficult to effectively remove complex and stable dye wastewater, especially Congo red dye.

Method used

Bacillus licheniformis LRL007 is used to induced the synthetic biologically sourced amorphous calcium carbonate, and the surface porous amorphous calcium carbonate is prepared by microbial culture. As an adsorption material, its surface functional groups form hydrogen bonds or chemical bonds with the dye for adsorption.

Benefits of technology

It has achieved efficient adsorption of Congo red dye, with a maximum adsorption amount of 454.55 mg/g, wide pH applicability, fast adsorption speed, strong anti-interference ability, good recycling performance, low cost and environmentally friendly.

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Abstract

The present invention belongs to the technical field of environmental governance, and specifically relates to a biogenic amorphous calcium carbonate for dye wastewater treatment, and a preparation method and application thereof. Bacillus licheniformis LRL007 is inoculated into a liquid culture medium containing a soluble inorganic calcium salt for cultivation to obtain the biogenic amorphous calcium carbonate; the Bacillus licheniformis LRL007 has been deposited in the General Microbiology Center of the China Committee for the Collection of Microorganisms on January 10, 2022, with a deposit number of CGMCC No. 24275. The preparation method of the present invention is economical and environmentally friendly, simple to operate, and no toxic or harmful substances are added during the synthesis process, and no secondary pollution will be caused; the obtained amorphous calcium carbonate has good stability, a well-developed porous structure and good organic dye adsorption and anti-interference ability. At the same time, its pH applicability range is wide, and it can be recycled at least 8 times or more, and has good application prospects in the treatment of organic dye wastewater.
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