公开(公告)号：US20190256770A1

公开(公告)日：2019-08-22

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: C09K17/50 ,  C04B26/28 ,  C04B26/22 ,  C04B24/14 ,  C04B14/28 ,  E02D3/12

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：US20180200765A1

公开(公告)日：2018-07-19

申请号：US15744358

申请日：2016-07-18

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

Inventor： Rolf U. Halden ,  Edward Kavazanjian ,  Alizee M. Jenck ,  Nasser Hamdan ,  Thomas Hoelen

IPC: B09C1/08 ,  E02D31/00 ,  C04B14/10 ,  C08B37/00

CPC classification number: B09C1/08 ,  B09C1/00 ,  B09C2101/00 ,  C04B14/104 ,  C08B37/0033 ,  C08B37/0096 ,  E02D31/002 ,  E02D2250/003 ,  E02D2600/20

Abstract: A method for installing an in situ, low-permeability temporary horizontal barrier at depth for vertical containment of a soil mass including installing a low permeability vertical barrier having walls located to contain a predetermined soil volume, the vertical barrier having a horizontal surface area in a plane perpendicular to its walls; and injecting low permeability reagents capable of forming a temporary horizontal barrier in a pattern suitable for creating a horizontal subsurface barrier joined to all of the vertical barrier walls to form an in situ barrier.

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.