Oxidative reactions of peanut hulls

WCU Author/Contributor (non-WCU co-authors, if there are any, appear on document)
Michael Jason Sands (Creator)
Western Carolina University (WCU )
Web Site: http://library.wcu.edu/
Carmen Huffman

Abstract: This study investigates how a variety of oxidants can be used to chemically modify ground peanut hulls. Low density and high density hulls were modified using three different oxidizing environments: an alkaline peroxide oxidation system (APOS), potassium permanganate, and a selective oxidizing system containing (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO). Reactions with cellulose were also carried out as a control. Temperature, oxidation-reduction potential and pH were monitored for the duration of the modifications. Infrared (IR) spectra were acquired of unmodified and modified samples to probe chemical changes in the hulls. The selective TEMPO and non-selective permanganate oxidation systems show that an oxidizing environment is not responsible for the modification of the peanut hulls observed in the APOS. IR spectra reveal that oxidation in not occurring between the hulls and the APOS reaction, or any other modification. Rather, something that is alkaline soluble within the hulls dissolves into solution effecting the adsorption capacity of them.

Additional Information

Language: English
Date: 2020
Alkaline peroxide, Oxidation, Peanut hulls, Potassium permanganate, TEMPO, Wastewater remediation
Potassium permanganate
Heterocyclic compounds

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