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| Study on the Removal of Lignin Derivatives from Corn Stalk Hydrolysate via Flocculation Treatment by Egg White Protein |
| Received:March 07, 2023 Revised:April 07, 2023 |
| DOI：10.11981/j.issn.1000-6842.2024.01.146 |
| Key Words:corn stalk;hydrolysate;egg white protein;flocculation |
| Fund Project:天津市自然科学基金（16JCZDJC39700）。 |
| Author Name | Affiliation | Postcode | | ZHAO Min | Tianjin Key Lab of Pulping and Papermaking， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 | | CHEN Yan | Tianjin Key Lab of Pulping and Papermaking， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 | | WANG Gaosheng | Tianjin Key Lab of Pulping and Papermaking， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 | | YU Menghui* | Tianjin Key Lab of Pulping and Papermaking， Tianjin University of Science and Technology， Tianjin， 300457 | 300457 |
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| Abstract: |
| In order to improve the biodegradability of corn stalk hydrolysate （CSH）， the effect of egg white protein （EWP） flocculation treatment on the removal of lignin derivatives from CSH was studied and compared with general flocculant FeCl3 and CPAM. The results showed that EWP thermal flocculation treatment （heating at 100 ℃ for 5 min） was used in the CSH with original CODCr concentration of 40 g/L， the removal rate of macromolecular lignin （calculated by turbidity） could reach （76.87±3.00）%， which was significantly better than that of FeCl3 and CPAM （P<0.05）. At the same time， EWP thermal flocculation treatment did not cause obvious loss of sugar， furan， and weak acid. Due to the sulfhydryl-disulfide bond cross-linking between EWP and lignin derivatives， macromolecular compounds formed via hydrophobic reaction， which promoted the removal of lignin derivatives from CSH. |
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