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Preparation of Miscanthus-based Lignocellulosic Nanofibrils Aerogel and Its Adsorption Property Towards Rhodamine B
Received:July 15, 2024  Revised:September 11, 2024
DOI：10.11981/j.issn.1000-6842.2024.04.35
Key Words:Miscanthus;lignocellulosic nanofibrils;aerogel;Rhodamine B;adsorption mechanism
Fund Project:国家自然科学基金项目（22208163，22208161）；广西清洁化制浆造纸与污染控制重点实验室开放基金（2023GXZZKF30）；中国科学技术协会青年人才托举工程（2023QNRC0352）。
Author NameAffiliationPostcode
CHEN Lidong Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials， College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 210037
DUAN Sheng Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials， College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 210037
WU Jin Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials， College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 210037
LIU Chao Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials， College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 210037
YAO Shuangquan Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， College of Light Industrial and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 530004
XU Tingting Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials， College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 210037
DAI Hongqi Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials， College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 210037
BIAN Huiyang* Jiangsu Provincial Key Lab of Sustainable Pulp and Paper Technology and Biomass Materials， College of Light Industry and Food Engineering， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037
Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， College of Light Industrial and Food Engineering， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 		530004
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Abstract:
      Lignocellulosic nanofibrils （LCNF） was prepared from Miscanthus using citric acid pretreatment combined with high-pressure homogenization， and LCNF aerogel was obtained after freeze-drying. The adsorption performance and mechanism of the aerogel towards cationic dye Rhodamine B （RB） was investigated. The results showed that the adsorption capacity towards RB by LCNF aerogel was the best under neutral conditions， and the equilibrium adsorption capacity increased to 40.0 mg/g at 55 ℃. The adsorption kinetics and thermodynamics studies showed that the adsorption towards RB by LCNF aerogel conformed to the pseudo-second-order kinetic model， which was mainly dominated by chemical adsorption and spontaneous. There were some interactions such as hydrogen bonding and electrostatic attraction between LCNF and RB during the adsorption process. In addition， LCNF aerogel showed good reusability and the removal rate of RB remained above 83% after four cycles.
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