Highly Compressible and Hydrophobic Aerogel Shows Promise in Oil/Water Separation

Strategic Insights -

Research from Zhejiang Science Technical University in Hangzhou, People's Republic of China, has shed light on the development of a highly compressible and hydrophobic aerogel made from microfibrillated cellulose. This innovative material has the potential to efficiently separate oil and water, addressing a significant environmental challenge. The study, published in Industrial Crops and Products, aims to improve the selectivity, mechanical properties, and adsorption capacities of microfibrillated cellulose aerogel (MFCA) in oil/water separation.

Key Takeaways:

  • The research developed a highly compressible and hydrophobic aerogel from microfibrillated cellulose via a combined silane acid hydrolysis and freeze-drying process.
  • The aerogel displayed exceptional hydrophobicity and high lipophilicity, with an adsorption capacity of 94.68 g/g for n-heptane at an optimal MTMS dosage of 30 mmol/g.
  • The compression recovery properties of the MFCA were investigated, showing an increase in adsorption capacity recovery performance from 20.04% to 37.60% after 30 cycles.
  • The study highlighted the potential of aerogel in oil/water separation, offering a scalable and eco-friendly solution to address environmental challenges.
  • The research was supported by the National Natural Science Foundation of China (NSFC), Pioneer and Leading Goose R&D Program of Zhejiang Province, Ningbo Technological Innovation 2025 Project, and The 521 Talent Cultivation Program of Zhejiang Sci-Tech University.

Statistics:

  • The study showed that increasing the MTMS dosage from 10 mmol/g(MFC) to 50 mmol/g(MFC) led to a significant enhancement in the water contact angle from 121.12 degrees to 133.50 degrees.
  • The adsorption capacity of the aerogel decreased from 94.68 g/g to 51.91 g/g as the MTMS dosage increased.
  • The compression recovery properties of the MFCA showed that it retained 54.53% of its initial capacity after 30 cycles of reuse.

Sources:

  • Industrial Crops and Products
  • Elsevier
  • National Natural Science Foundation of China (NSFC)
  • Pioneer and Leading Goose R&D Program of Zhejiang Province
  • Ningbo Technological Innovation 2025 Project
  • The 521 Talent Cultivation Program of Zhejiang Sci-Tech University
  • Yanjun Tang, Zhejiang Science Technical University
  • Xiangjian Yang, Derong Tang, Yaoting Liang, Ya Li, Lexiang Wang, Junming Wang, and Chunjie Ye