公开(公告)号：US20190382976A1

公开(公告)日：2019-12-19

申请号：US16548522

申请日：2019-08-22

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

Inventor： Edward Kavazanjian ,  Nasser Hamdan

IPC: E02D3/12 ,  C04B41/50 ,  C02F1/42 ,  C02F1/28 ,  C02F1/52 ,  C12N9/78 ,  B09C1/00 ,  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：US11987741B2

公开(公告)日：2024-05-21

申请号：US17192337

申请日：2021-03-04

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

Inventor： Edward Kavazanjian ,  Nasser Hamdan ,  Hamed Khodadadi Tirkolaei ,  Abdullah Almajed

IPC: C09K17/44 ,  C04B24/14 ,  C04B28/00 ,  C04B103/00 ,  C04B111/00 ,  E02D3/12

CPC classification number: C09K17/44 ,  C04B24/14 ,  C04B28/003 ,  E02D3/12 ,  C04B2103/0001 ,  C04B2111/00732 ,  C12Y305/01005 ,  E02D2300/0025 ,  E02D2300/0045

Abstract: The present disclosure provides a method of biocementation comprising contacting a granular, cohesionless soil with a solution, wherein the solution comprises urea, urease, a source of calcium ions, and a source of non-urease proteins, wherein the urea, urease, source of calcium ions, and source of non-urease proteins are provided in effective amounts suitable to cause crystallization of calcium carbonate.

公开(公告)号：US20180119185A1

公开(公告)日：2018-05-03

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

CPC classification number: C12P9/00 ,  C01F11/00 ,  C04B28/10 ,  C04B2103/0001 ,  C04B2111/72 ,  C12N9/80 ,  C12P3/00 ,  C12Y305/01005

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

公开(公告)号：US12195660B2

公开(公告)日：2025-01-14

申请号：US18620705

申请日：2024-03-28

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

Inventor： Edward Kavazanjian ,  Nasser Hamdan ,  Hamed Khodadadi Tirkolaei ,  Abdullah Almajed

IPC: C09K17/44 ,  C04B24/14 ,  C04B28/00 ,  E02D3/12 ,  C04B103/00 ,  C04B111/00

Abstract: The present disclosure provides a method of biocementation comprising contacting a granular, cohesionless soil with a solution, wherein the solution comprises urea, urease, a source of calcium ions, and a source of non-urease proteins, wherein the urea, urease, source of calcium ions, and source of non-urease proteins are provided in effective amounts suitable to cause crystallization of calcium carbonate.

公开(公告)号：US20240263074A1

公开(公告)日：2024-08-08

申请号：US18620705

申请日：2024-03-28

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

Inventor： Edward Kavazanjian ,  Nasser Hamdan ,  Hamed Khodadadi Tirkolaei ,  Abdullah Almajed

IPC: C09K17/44 ,  C04B24/14 ,  C04B28/00 ,  C04B103/00 ,  C04B111/00 ,  E02D3/12

CPC classification number: C09K17/44 ,  C04B24/14 ,  C04B28/003 ,  E02D3/12 ,  C04B2103/0001 ,  C04B2111/00732 ,  C12Y305/01005 ,  E02D2300/0025 ,  E02D2300/0045

Abstract: The present disclosure provides a method of biocementation comprising contacting a granular, cohesionless soil with a solution, wherein the solution comprises urea, urease, a source of calcium ions, and a source of non-urease proteins, wherein the urea, urease, source of calcium ions, and source of non-urease proteins are provided in effective amounts suitable to cause crystallization of calcium carbonate.

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：US20250074803A1

公开(公告)日：2025-03-06

申请号：US18820649

申请日：2024-08-30

Applicant: Dennis Grubb ,  Arizona Board of Regents on behalf of Arizona State University ,  FREEPORT MINERALS CORPORATION

Inventor： Anca Delgado ,  Evelyn Miranda ,  Nasser Hamdan ,  Leonard Santisteban ,  Dennis Grubb

IPC: C02F3/34 ,  C02F3/28 ,  C02F101/10 ,  C02F101/20 ,  C02F103/10

Abstract: Described herein is a method of purifying contaminated fluid influent, the method comprising: providing a reactor comprising a reactor inlet, a reactor outlet, and a purification composition; circulating contaminated fluid influent through the reactor to create a slag-treated fluid; providing a biochemical reactor comprising a biochemical reactor inlet, a biochemical reactor outlet, and a purification media; and circulating the slag-treated fluid through the biochemical reactor to generate a purified fluid. Also described herein is a contaminated fluid influent purification system, comprising: a reactor having a reactor inlet, a reactor outlet, and a purification composition; a biochemical reactor having a biochemical reactor inlet, a biochemical outlet, and a purification media; a settling tank; and a mixing tank; wherein the mixing tank is fluidly connected to a contaminated fluid influent source, the reactor and the settling tank; and wherein the settling tank is fluidly connected to the mixing tank and the biochemical reactor.

公开(公告)号：US20210395720A1

公开(公告)日：2021-12-23

申请号：US17411590

申请日：2021-08-25

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

Inventor： Edward Kavazanjian ,  Nasser Hamdan ,  Hamed Khodadadi Tirkolaei ,  Neda Javadi

IPC: C12N9/96 ,  C12N9/80 ,  C09K17/42

Abstract: Disclosed are methods of extracting an enzyme, comprising soaking a seed in an aqueous solution, homogenizing the seed to produce a homogenized suspension, and filtering the homogenized suspension to produce a crude extract, wherein the crude extract comprises urease and non-urease proteins.

公开(公告)号：US20210189238A1

公开(公告)日：2021-06-24

申请号：US17192337

申请日：2021-03-04

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

Inventor： Edward Kavazanjian ,  Nasser Hamdan ,  Hamed Khodadadi Tirkolaei ,  Abdullah Almajed

IPC: C09K17/44 ,  C04B28/00 ,  C04B24/14 ,  E02D3/12

Abstract: The present disclosure provides a method of biocementation comprising contacting a granular, cohesionless soil with a solution, wherein the solution comprises urea, urease, a source of calcium ions, and a source of non-urease proteins, wherein the urea, urease, source of calcium ions, and source of non-urease proteins are provided in effective amounts suitable to cause crystallization of calcium carbonate.

公开(公告)号：US10399130B2

公开(公告)日：2019-09-03

申请号：US15744358

申请日：2016-07-18

Applicant: Arizona Board of Regents on behalf of Arizona State University ,  CHEVRON U.S.A. INC.

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

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

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.