Neutral protease enhances sludge foaming and drying by tuning the hydrophilicity/hydrophobicity balance of proteins

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成果类型：

期刊论文

作者：

Zhao, Cheng;Ruan, Min;Huang, Jing;Li, Hui;Huang, Zhongliang;...

通讯作者：

Huang, J

作者机构：

[Zhang, Xuan; Huang, Zhongliang; Li, Hui; Wu, Zijian; Huang, J; Li, Changzhu; Zhao, Cheng; Huang, Jing] Hunan Acad Forestry, State Key Lab Utilizat Woody Oil Resource, Changsha 410004, Peoples R China.

[Zhang, Wei; Ruan, Min; Zhao, Cheng] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Changsha 410114, Peoples R China.

[Yang, ZhaoHui; Xiong, Weiping] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China.

[Chen, Hong] Changsha Univ Sci & Technol, Sch Civil & Environm Engn, Changsha 410114, Peoples R China.

[Zhang, Xuan; Huang, Zhongliang; Huang, Jing] Yuelushan Lab, Changsha 410128, Peoples R China.

通讯机构：

[Huang, J ] H

Hunan Acad Forestry, State Key Lab Utilizat Woody Oil Resource, Changsha 410004, Peoples R China.

语种：

英文

关键词：

Foaming pretreatment;Neutral protease;Plastein reaction;Protein secondary structure;Sludge drying;Sludge protein

期刊：

Bioresource Technology

ISSN：

0960-8524

年：

2025

卷：

433

页码：

132724

DOI：

10.1016/j.biortech.2025.132724

基金类别：

Province [2023JJ10023]; Scientific research project of Hunan Provincial Department of Education [24A0225]; Chenzhou National Sustainable Development Project [2022sfq53]; Hunan Forestry Science and Technology Project [XLK202449]

机构署名：

本校为其他机构

院系归属：

能源与动力工程学院

摘要：

Sludge foaming can promote sludge drying efficiency. In the foaming process, sludge protein plays a critical role due to its amphiphilic properties. However, the existing alkaline hydrolysis can generate sufficient solubilized proteins but unable to adjust their properties suitable for subsequent foaming. In response to this issue, acid pretreatment, thermal pretreatment, and enzymes of α-amylase, neutral protease (NP), and alkaline protease were applied in combination with alkaline hydrolysis. Among all methods, the enzymatic hydrolysis of 10...

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Neutral protease enhances sludge foaming and drying by tuning the hydrophilicity/hydrophobicity balance of proteins

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