Recovery of Phosphorus Marcia Silva, Ph.D., Assistant - - PowerPoint PPT Presentation

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Jan 14, 2024 247 likes •381 views

Novel Material for Removal and Recovery of Phosphorus Marcia Silva, Ph.D., Assistant Scientist/Facility Manager, Water Technology Accelerator, Adjunct Assistant Professor for the School of Freshwater Sciences, University of Wisconsin-Milwaukee

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Novel Material for Removal and Recovery of Phosphorus

Marcia Silva, Ph.D., Assistant Scientist/Facility Manager, Water Technology Accelerator, Adjunct Assistant Professor for the School

f Freshwater Sciences, University of Wisconsin-Milwaukee

Contact: Jessica Silvaggi, Ph.D. Senior Licensing Manager 1440 East North Ave. Milwaukee, WI 53202 Tel: 414-906-4654 Jessica@uwmrf.org

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PhosProblems: P Contamination

Phosphate is a common water contaminant, especially in farm run-off
Excess nutrients in water ways leads to algal blooms and excessive

plant growth (some blooms toxic to humans)

At first plant growth may be stimulated, but over time excessive plant

growth can choke the water way, and lead to death of the plants

Low oxygen in waterways can occur and death of aquatic organisms
Effects on economics of food and recreation

Environment Wildlife/plants Recreation

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Contamination Sources

Agriculture
Wastewater
Stormwater

runoff

In and around the home

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Problems in Phosphate Removal

Phosphorus treatment and removal technologies
n the market:
Chemical treatment
Capital costs are lower than biological treatment, greater O&M costs than biological

processes

Biological treatment
Zeolites

– Difficult to recycle – Do not work in all environments

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Our Modified Zeolite Solution

Goldilocks solution

– Stable – Works at wide range of pH – Tolerates high temperature – Recyclable – Flexible deployment – Quick adsorption of P

(Inspiration was a furnace filter)

Other deployment methods may also

be used

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IP and Opportunity

International Patent Pending: WO2017214530A1
Looking for a development partner to aid in scale up and deployment

for multiple applications

Licensing is available

Market

Our IP has potential in numerous markets including phosphate

removal for wastewater/drinking water and the recovery and reuse/re-sale of phosphorus

About 90% of the world’s mined phosphorus ends as the crucial

ingredient in fertilizers

The global phosphate market was valued at $67.3B in 2015 and is

projected to reach $75.2B by 2021

The global phosphate fertilizer market size was estimated at $51.6B in

2016

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How the technology works

The Material:

Zeolite functionalized with metal
xides such as lanthanum and

magnesium to adsorb and remove P

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Our Modified Zeolite Solution

Quick adsorption of P

20 40 60 80 100 1 5 10 15 20 25 30 60

% Removal Efficiency Contact Time (min)

Effect of contact time on removal efficiency percentage

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Phosphorus Removal Efficiency

50 55 60 65 70 75 80 85 90 95 100 Phoslock Chinese No Microwave Chinese Microwave 10X Sigma

% Removal Efficiency Filters

Removal Efficiency Percentage

Benchmark material WaTA filter cheaper fabrication materials Benchmark material WaTA filter-best fabrication materials

WaTA filter- intermediate step

Comparison to other materials and our fabrication materials used

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Regeneration Efficiency

✓Plain zeolite – removes 10 % P ✓Our modified zeolite -

– removes up to 98% P

– We can recycle modified zeolite 10 times and continue to remove P

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Next Steps

Current funding: ✓Great Lakes Protection Fund - $1.1 M ($450 K to UWM) ✓Deployment of the system in farms in WI, MI and OH ✓Monitoring of the system and performance by Dec 2019 Looking For:

Partner to scale up,develop, and deploy in multiple

markets

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