# US 2023/0408380 A1 · Air monitoring systems and methods

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2023/0408380 A1
- Document ID: US20230408380A1
- Status: Published application
- Kind: A1
- Application number: 18/252,560
- Filed: 2021-11-16
- Published: 2023-12-21
- Earliest claimed: 2020-11-16
- Assignees: U-Earth Biotech Ltd
- Applicants: U-Earth Biotech Ltd
- Inventors: Elisabetta MAGGIO
- Web page: https://patentgrep.com/patent/US20230408380A1

## CPC

- G01N 1/2273: {Atmospheric sampling}
- F24F 8/125: using wet filter elements
- F24F 8/133: by direct contact with liquid, e.g. with sprayed liquid
- F24F 8/175: using biological materials, plants or microorganisms
- G01N 1/2205: {with filters}
- F24F 11/52: Indication arrangements, e.g. displays
- F24F 2110/10: Temperature
- F24F 2110/20: Humidity
- F24F 2110/50: Air quality properties
- F24F 2110/64: Airborne particle content
- F24F 2110/65: Concentration of specific substances or contaminants
- F24F 2110/66: Volatile organic compounds [VOC]
- F24F 2110/68: Radon
- F24F 2110/70: Carbon dioxide
- F24F 2110/72: Carbon monoxide
- Y02A 50/20: Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02B 30/70: Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

An air monitoring system having a device which captures air contaminants, particularly biological particles, particularly viruses, more particularly SARS-CoV-2 is provided, and to methods associated with the system for sampling and detecting them in the air but also for digesting the captured biological particles by bio-oxidation through a microorganism compound additive. The invention also relates to kits of parts having the device and at least a test, preferably an antigen test cassette as well as to their use in detecting said biological particles within the air.

## Claims

### Claim 1

A method for detecting and/or monitoring the presence of biological particles in the air, the method comprising the following steps:
providing a device comprising:
collecting means configured to receive a liquid therein;
a bio support filter configured to accommodate a biomass additive and comprising an air passageway, the biomass additive configured to digest contaminants within air passing through the air passageway by bio-oxidation;
a pipe system configured to transport the liquid from the collecting means to the bio support filter, thereby providing moisture sufficient for the biomass additive to digest the contaminants;
one or more air inlets for allowing contaminated air to enter into the device; and one or more air outlets for discharging purified air;
collecting a sample of liquid from the collecting means of said device; and
testing said sample of liquid for the presence of one or more biological particles.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the collecting means of said device comprise a first tank configured to receive therein liquid and a second tank configured to receive therein condensed liquid captured from the air and wherein the method comprises:
collecting a sample of liquid from the first tank and/or a sample of condensed liquid from the second tank; and
testing said sample of liquid and/or sample of condensed liquid for the presence of biological particles.

### Claim 3 (depends on 2)

The method according to claim 2, wherein the first and second tank of said device are in fluid communication and wherein the method comprises:
collecting a mixture of said sample of liquid and sample of condensed liquid; and
testing said mixture for the presence of biological particles.

### Claim 4 (depends on 1)

The method according to claim 1, wherein said testing is carried out by subjecting the sample of liquid to one or more tests and/or analysis and/or assays, preferably selected among the group consisting of: molecular tests, PCR, RT-PCR or RT-PCR multiplex tests, DNA/RNA sequencing, antigen tests, antibody tests, enzyme-linked immunosorbent assay (ELISA), chemiluminescent immunoassay (CIA), lateral flow assay, immunochromatographic assay, in particular immunochromatographic test cassette, lateral-flow test cassette and combination thereof, preferably immunochromatographic test cassette and/or RT-PCR multiplex assays.

### Claim 5 (depends on 1)

The method according to claim 1, further comprising the step of
signaling the presence of one or more biological particles, preferably wherein said signaling is carried out by providing the device with an optical sensor being in communication with the test and configured to detect and discriminate the result of the test,
more preferably wherein said signaling further comprises displaying the result on a dedicated dashboard software and/or transmitting the result to a cloud-based server using an access point affixed to the sensor and/or analyzing the result using the software optionally providing an output of the analysis.

### Claim 6 (depends on 1)

The method according to claim 1, wherein said biological particles are selected among the group consisting of: bacterial cells and spores, viruses, pollen, fungi, algae, detritus, allergens, protozoa, parasites, and/or cell fragments comprising nucleic acids, proteins and toxins, preferably viruses, more preferably viruses selected among the group consisting of coronaviruses, in particular beta-coronaviruses, more in particular SARS-CoV-2; Influenza A virus, Influenza A virus subtype H1, Influenza A virus subtype H3; Influenza B virus; Respiratory syncytial virus type A or type B; Adenovirus; Enterovirus; Parainfluenza Virus 1, 2, 3, or 4 and/or Metapneumovirus, still more preferably SARS-CoV-2.

### Claim 7 (depends on 1)

The method according to claim 1, wherein the biomass additive of the device is a nonpathogenic, non-genetically modified micro-organisms consortium additive comprising aerobic and anaerobic species, fungi and yeast, preferably selected among the group consisting of: Bacillus specie (spp), Lactobacilli spp, Actinobacteria spp, Proteobacteria spp, Cianobacteria spp, Deinococcus spp, Clorobacteriacee, Spirochaetalea and/or mixtures thereof, optionally in admixture with co-formulants preferably selected among the group consisting of: quartz, anthracites, carbonates, silicates, metal ions and salts, protein extracts, enzymes, amino acids, natural extracts and mixtures thereof.

### Claim 8

(canceled)

### Claim 9

A method for detecting and/or monitoring the presence of biological particles in the air, the method comprising the following steps:
providing a device comprising:
collecting means configured to receive a liquid therein;
a bio support filter configured to accommodate a biomass additive and comprising an air passageway, the biomass additive configured to digest contaminants within air passing through the air passageway by bio-oxidation;
a pipe system configured to transport the liquid from the collecting means to the bio support filter, thereby providing moisture sufficient for the biomass additive to digest the contaminants;
one or more air inlets for allowing contaminated air to enter into the device; and one or more air outlets for discharging purified air;
testing a sample of liquid from the collecting means of said device for the presence of one or more biological particles.

### Claim 10 (depends on 9)

The method according to claim 9, wherein the collecting means of said device comprise a first tank configured to receive therein liquid and a second tank configured to receive therein condensed liquid captured from the air and wherein the method comprises:
testing a sample of liquid from the first tank and/or a sample of condensed liquid from the second tank for the presence of biological particles.

### Claim 11 (depends on 10)

The method according to claim 10, wherein the first and second tank of said device are in fluid communication and wherein the method comprises:
testing a mixture of said sample of liquid and sample of condensed liquid for the presence of biological particles.

### Claim 12 (depends on 9)

The method according to claim 9, wherein the collecting means of said device are equipped with one or more biosensor(s) and wherein said testing is carried out by contacting the sample(s) of liquid with said one or more biosensor(s).

### Claim 13 (depends on 9)

The method according to claim 9, wherein the bio support filter of said device is equipped with one or more biosensor(s) and wherein said testing is carried out by contacting the liquid leaking from the bio support filter.

### Claim 14 (depends on 12)

The method according to claim 12, wherein the one or more air inlets of said devices are equipped with one or more biosensor(s) and wherein said testing is further carried out by contacting the inlet air with said one or more biosensor(s).

### Claim 15 (depends on 12)

The method according to claim 12 wherein said one or more biosensor(s) comprise a bioreceptor configured to specifically interact with one or more biological particle(s), preferably wherein the bioreceptor is selected among enzymes, cells, aptamers, deoxyribonucleic acid (DNA), antibodies or a mixture thereof.

### Claim 16 (depends on 9)

The method according to claim 9, further comprising the step of:
signaling the presence of one or more biological particles, wherein said signaling is carried out by providing the biosensor(s) with a transducer configured to produce a detectable signal, preferably wherein said detectable signal is an optical or electrical signal, more preferably wherein said detectable signal is proportional to the amount of biological particle-bioreceptor interaction.

### Claim 17 (depends on 16)

The method according to claim 16, wherein said signaling further comprises displaying the result on a dedicated dashboard software and/or transmitting the result to a cloud-based server using an access point affixed to the sensor and/or analyzing the result using the software optionally providing an output of the analysis.

### Claim 18 (depends on 1)

The method according to claim 1, wherein said biological particles are selected among the group consisting of: bacterial cells and spores, viruses, pollen, fungi, algae, detritus, allergens, protozoa, parasites, and/or cell fragments comprising nucleic acids, proteins and toxins, preferably viruses, more preferably viruses selected among the group consisting of coronaviruses, in particular beta-coronaviruses, more in particular SARS-CoV-2; Influenza A virus, Influenza A virus subtype H1, Influenza A virus subtype H3; Influenza B virus; Respiratory syncytial virus type A or type B; Adenovirus; Enterovirus; Parainfluenza Virus 1, 2, 3, or 4 and/or Metapneumovirus, still more preferably SARS-CoV-2.

### Claim 19

(canceled)