公开(公告)号：US10392767B2

公开(公告)日：2019-08-27

申请号：US15029316

申请日：2014-10-28

Applicant: Arizona Board of Regents on behalf of Arizona State University

Inventor： Edward Kavazanjian ,  Nasser Hamdan

IPC: E02D3/12 ,  C04B41/50 ,  C02F1/42 ,  C12N9/78 ,  B09C1/00 ,  C02F1/28 ,  C02F1/52 ,  C01F11/18 ,  C12N9/80

Abstract: The present invention provides methods for mineral precipitation of porous particulate starting materials using isolated urease.

公开(公告)号：US10794029B2

公开(公告)日：2020-10-06

申请号：US16077435

申请日：2017-02-13

Applicant: ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY

Inventor： Ximin He ,  Edward Kavazanjian ,  Nasser Hamdan ,  Zhi Zhao

IPC: E02D3/12 ,  C09K17/50 ,  C04B14/28 ,  C04B24/14 ,  C04B26/22 ,  C04B26/28 ,  C04B103/00 ,  C04B111/00 ,  E21D9/00 ,  C09K3/22 ,  C08L5/00 ,  E21D9/06 ,  C08L1/26

Abstract: A soil stabilization method of forming an admixture of at least one hydrogel precursor and urease enzyme, and contacting at least a portion of the admixture with soil, and forming a hydrogel network in-situ within at least a portion of the soil, wherein at least a portion of the hydrogel network includes in-situ precipitated calcium carbonate. In some embodiments, at least a portion of the hydrogel network is formed in-situ by polymerizing the at least one hydrogel precursor in the presence of the urease enzyme.

公开(公告)号：US10563233B2

公开(公告)日：2020-02-18

申请号：US15803700

申请日：2017-11-03

Applicant: Arizona Board of Regents on behalf of Arizona State University

Inventor： Edward Kavazanjian ,  Nasser Hamdan

IPC: C12P9/00 ,  C12N9/80 ,  C12P3/00 ,  C01F11/00 ,  C04B28/10 ,  C04B103/00 ,  C04B111/72

Abstract: The present invention provides methods for mineral precipitation and/or cementation of permeable or fractured non-porous materials using isolated urease.