TREATMENT OF WASTEWATER WITH NANOBUBBLES FOR SAFE REUSE

• Sponsoring Institution: Agricultural Research Service/USDA
• Project Status: ACTIVE
• Funding Source: USDA COOPERATIVE AGREEMENT
• Reporting Frequency: Annual
• Accession No.: 0443235
• Project Start Date: Sep 15, 2022
• Project End Date: Sep 14, 2026
• Program Code: [(N/A)]- (N/A)

Recipient Organization
CLEMSON UNIVERSITY
(N/A)
CLEMSON,SC 29634

Performing Department
(N/A)

Non Technical Summary
(N/A)

Animal Health Component

60%

Research Effort Categories

Basic

40%

Applied

60%

Developmental

0%

Classification

Knowledge Area (KA)	Subject of Investigation (SOI)	Field of Science (FOS)	Percent
403	0110	1100	20%
403	0210	2000	80%

Knowledge Area
403 - Waste Disposal, Recycling, and Reuse;

Subject Of Investigation
0110 - Soil; 0210 - Water resources;

Field Of Science
1100 - Bacteriology; 2000 - Chemistry;

Keywords

lettuce

water

reuse

nanobubbles

Goals / Objectives
Evaluate the potential to use nanobubbles to treat wash water from cut lettuce packaging facilities.

Project Methods
We will evaluate the impact of nano bubbles (NB) gas type (ozone vs air), pH, carbonate, calcium and temperature on washing lettuce with NBs and the subsequent filterability of the washed water. We will employ a membrane-based NB generator. The system has a special ozone resistant membrane that allows generating ozone nanobubbles in addition to oxygen, air, carbon dioxide, and nitrogen.