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ARS Home » Midwest Area » Bowling Green, Kentucky » Food Animal Environmental Systems Research » Research » Publications at this Location » Publication #359030

Research Project: Developing Safe, Efficient and Environmentally Sound Management Practices for the Use of Animal Manure

Location: Food Animal Environmental Systems Research

Title: Biogenic silica extraction and comparison of agricultural residues for potential adsorbent material

item Lovanh, Nanh
item Loughrin, John
item Agga, Getahun
item OH, BYUNG-TAEK - Chonbuk National University
item RUIZ-AGUILAR, GRACIELA - University Of Guanajuato

Submitted to: American Chemical Society Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 1/15/2019
Publication Date: 3/30/2019
Citation: Lovanh, N.C., Loughrin, J.H., Agga, G.E., Oh, B., Ruiz-Aguilar, G. 2019. Biogenic silica extraction and comparison of agricultural residues for potential adsorbent material. American Chemical Society Abstracts. Paper No. 3097306.

Interpretive Summary:

Technical Abstract: Gas emissions, including ammonia, methane and other greenhouse gases, sulfides, and other volatile organic carbons (VOCs) from livestock operations are health and environmental concerns. This is often a major problem for rural communities engaged in animal agriculture. Management of polluted air from confined animal feeding operations (CAFOs) and other livestock facilities is a regulatory concern but can become a major expense for producers as well. Effective removal of hazardous substances and odor reduction by currently available methods can be unreliable and costly. In this study, a quantification of silica nanoparticles (Si NPs) from different agricultural residues such as rice hull and corn stover was carried out to be used as potential adsorbent materials for air pollutants. Different extraction parameters such as pH, temperature, and type of agricultural residues determine the yield of Si NPs. Our results show that yield ranges from 10% to upward of over 40%. Preliminary results also show that biogenic silica NPs amended with metal oxides could reduce certain air pollutants via fixed-bed reactor setup. Therefore, it is feasible to source naturally occurring Si NPs as adsorbent material for air pollution abatement strategy around CAFOs for sustainability and cost effectiveness.