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Date of Publication:2021-01-01

Journal:Huagong Xuebao/CIESC Journal

Affiliation of Author(s):化工学院

Volume:72

Issue:10

Page Number:5319-5329

ISSN No.:0438-1157

Abstract:The urease produced by Sporosarcina pasteurii can hydrolyze urea, and the generated CO2 reacts with calcium chloride to obtain calcium carbonate with different polymorphs by urease in different solutions. The mesoporous hollow micron pure spheroids formed by self-assembly of nanospheres were obtained by urease in the supernatant of fermentation broth. Calcite with 100% was obtained by bacterial urease. Infrared spectrum analysis showed that the elliptical calcium carbonate obtained by crude urease was affected by the hydroxyl groups. The effects of urease activity and reactant concentration on vaterite were explored. It was also found that the obtained pure vaterite is very stable within 7 days and is expected to be used as a drug carrier. © 2021, Editorial Board of CIESC Journal. All right reserved.

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