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Prof. Guangzai Nong
Guangxi University, Nanning, Guangxi, China
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Academic Career Length
14Years (2013-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
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Journal Article
Black liquor is generated in Kraft pulping of wood or non-wood raw material in pulp mills, and regarded as a renewable resource. The objective of this paper was to develop an effective means to remove the water pollutants by recovery of both lignin and sodium hydroxide from black liquor, based on electrolysis. The treatment of a 1000 mL of black liquor (122 g/L solid contents) consumed 345.6 kJ of electric energy, and led to the generation of 30.7 g of sodium hydroxide, 0.82 g of hydrogen gas and 52.1 g of biomass solids. Therefore, the recovery ratios of elemental sodium and biomass solids are 80.4% and 76%, respectively. Treating black liquor by electrolysis is an environmentally friendly technology that can, in particular, be an alternative process in addressing the environmental issues of pulping waste liquor to the small-scale mills without black liquor recovery.
Journal Article
Lignin is insoluble in water, thereby limiting its use in the synthesis of adhesives. Therefore, in this study, an aminated lignin compound was prepared through a lignin amination reaction to increase the amount of raw lignin material that can be used in the synthesis of adhesives; moreover, structural analysis was conducted. The main result of this was the introduction of amino groups into phenolic hydroxyl groups in the hydrolyzing lignin from the raw lignin materials, thus generating the product of aminated lignin. The resulting particle sizes were about 100 nm, the average molecular weight was 57,627 g/mol, and the water solubility of the aminated lignin was about 0.45 g/100 mL. Therefore, the water solubility of raw lignin was greatly improved. The proposed reaction mechanism of phenolic hydroxyl groups and carboxylic acid groups in lignin is a reaction with ammonia molecules; thus, the successful introduction of amino groups generated the aminated lignin compounds. Hence, this article enriches the scientific theory of lignin reactions and provides a reference for the widespread application of raw lignin materials in the field of adhesives.
1 January 2023 in e-Polymers
Journal Article
XZXiaofang Zou
Xiaofang Zou
TZTian Zhu
Tian Zhu
JTJiangquan Tang
Jiangquan Tang
WGWeixing Gan
Weixing GanGNGuangzai Nong
Guangzai NongPolyamide composite reverse osmosis (RO) membranes occupy an important position in water treatment. However, membrane fouling, especially biofouling, can lead to a significant decrease in membrane permeability. Therefore, reducing biological contamination is a significant and important property of an RO membrane. In this article, a hypothesis on the development of a new kind of RO membrane for antibacterial purposes was prepared by the modification of gallic acid (GA) and silver nanoparticles (AgNPs). Then, experiments were carried out to verify the hypothesis, getting a modified RO membrane with the composite of GA@AgNPs. The water flux of the GA@AgNPs RO membrane was 31.1 L·m −2 ·h −1 , which was 46.7% higher than that of the original membrane, while the rejection rate of salt remained at 93.8–97.6%. Moreover, the GA@AgNPs RO membranes exhibited outstanding antibacterial properties with more than 99.9% antibacterial efficiency against both Escherichia coli and Staphylococcus aureus . Our work provides a new idea for solving the problem of biofouling RO membranes.
1 November 2019 in Industrial Crops and Products
Journal Article
GNGuangzai Nong
Guangzai NongPLPengbo Li
Pengbo Li
YLYijing Li
Yijing Li
DXDeyue Xing
Deyue Xing
TZTian Zhu
Tian Zhu
YYYongjun Yin
Yongjun Yin +3
1 January 2013 in Energy
Journal Article
GNGuangzai Nong
Guangzai NongLHLijie Huang
Lijie Huang
HMHaitao Mo
Haitao Mo
SWShuangfei Wang
Shuangfei Wang
1 December 2022 in Carbohydrate Research
Journal Article
HYHao Yang
Hao Yang
XYXiang Yu
Xiang Yu
JLJingguang Liu
Jingguang Liu
YTYanzhi Tao
Yanzhi Tao
GNGuangzai Nong
Guangzai NongAbout Me
Biography of Professor Guangzai Nong
The professor works at the School of Resources, Environment, and Materials, Guangxi University, Nanning, Guangxi 530004, China. His major is chemical technology, and he researches renewable resource utilization and environmental protection. He has received one first prize for scientific and technological progress in Guangxi Province, China (2015), published a total of 43 papers, including 26 SCI papers, and obtained 13 authorized invention patents.
Educational experience:
(1) 2005-09 to 2008-07: Ph.D. in Chemical Technology, College of Chemistry and Chemical Engineering, Guangxi University.
(2) 2002-09 to 2005-07: Master's degree in Organic Chemistry from the School of Chemistry and Chemical Engineering: Guangxi Normal University.
(3) 1985-09 to 1988-07: Youjiang Ethnic Normal College, Chemistry Department, Chemistry Education.
Research and academic work experience:
(1) 2019-01 to present: Professor (researcher), School of Resources, Environment and Materials, Guangxi University.
(2) 2015-12 to 2018-12: Professor (researcher), College of Light Industry and Food Engineering, Guangxi University.
(3) 2008-08 to 2015-11: Associate professor, College of Light Industry and Food Engineering, Guangxi University.
(4) 1988-07 to 2008-08. Teacher in chemisry, Chemistry Education Group, Xiatang Middle School, Youjiang District, Baise City, Guangxi.