Title: Adsorbents, systems and methods for the removal of heavy metals from contaminated water

Abstract

An adsorbent for a target compound can include porous carbon particles having pores with a predominant pore size less than 10 nm, and magnetic nanoparticles (MNP) nucleated on the carbon surface and within the pores of carbon particles to provide a carbon magnetic nanoparticle adsorbent (C-MNA). A method for removing target compounds with an adsorbent, a system for removing contaminants from a liquid, and a method for adsorbing target compounds from a fluid are also disclosed.

Inventors:

Paranthaman, Mariappan Parans; Tsouris, Constantinos; Evans, Samuel F.; Ivancevic, Marko Robert

Issue Date:

2023-01-03

Research Org.:

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1986985

Patent Number(s):

11541372

Application Number:

16/867,022

Assignee:

University of Tennessee Research Foundation (Knoxville, TN); UT-Battelle LLC (Oakridge, TN)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D15/10 - characterised by constructional or operational features

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J20/20 - comprising free carbon
B01J20/28004 - {Sorbent size or size distribution, e.g. particle size}
B01J20/28009 - {Magnetic properties}
B01J20/28016 - {Particle form}
B01J20/2805 - {Sorbents inside a permeable or porous casing, e.g. inside a container, bag or membrane}
B01J20/28059 - {being less than 100 m2/g}
B01J20/28061 - {being in the range 100-500 m2/g}
B01J20/28064 - {being in the range 500-1000 m2/g}
B01J20/28066 - {being more than 1000 m2/g}
B01J20/2808 - {being less than 2 nm, i.e. micropores or nanopores}
B01J20/28083 - {being in the range 2-50 nm, i.e. mesopores}
B01J20/28085 - {being more than 50 nm, i.e. macropores}
B01J20/3231 - {characterised by the coating or impregnating layer}
B01J20/3416 - {of sorbents or filter aids comprising free carbon, e.g. activated carbon}
B01J20/3475 - {in the liquid phase}

B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03C - MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS

B03C1/01 - by addition of magnetic adjuvants
B03C1/02 - acting directly on the substance being separated
B03C2201/18 - Magnetic separation whereby the particles are suspended in a liquid

C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

C02F1/281 - {using inorganic sorbents}
C02F1/283 - {using coal, charred products, or inorganic mixtures containing them}
C02F1/288 - {using composite sorbents, e.g. coated, impregnated, multi-layered}
C02F1/66 - by neutralisation
C02F2101/103 - {Arsenic compounds}
C02F2101/106 - {Selenium compounds}
C02F2101/20 - Heavy metals or heavy metal compounds
C02F2101/22 - Chromium or chromium compounds, e.g. chromates

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DOE Contract Number:  

AC05-00OR22725

Resource Type:

Patent

Resource Relation:

Patent File Date: 05/05/2020

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY