Team:BNDS China/Partnership




Partnership with KEYSTONE_A

  • Fig.1 BNDS_China designed the electrical system and shared the circuit structure to students from KEYSTONE_A.
  • In order to realize the mass production of cellulose, we need to design a more complex hardware, the Rotary Disc Reactor which also increases the difficulty of construction. Thus, it is difficult for our team to construct the hardware by ourselves due to the limited team members and working space. Our instructor Songyuan Zhang helped us get in touch with team KEYSTONE_A. Since bacterial cellulose was involved in the projects of both teams, we decided to work together to construct the hardware.

    Our team is responsible for the design of the Rotary Disc Reactor. We came up with the idea of Rotary Disc Reactor and put forward specific details in designation. Our team members designed both the structure of culture tank and the electrical system (Fig.1). We also prepare and customize all the required materials through Internet.

Our team members and members from KEYSTONE_A constructed the hardware during the summer vacation. Two teams jointly completed the initial construction work and completed the hardware that can be basically operated (Fig.2). However, when students from KEYSTONE_A helped to do the user test, they found that the PWM driving board in the circuit had problems with its stability. After long-term continuous operating, the temperature was too high in the circuit and the fuse in the PWM driving board was easy to blow. KEYSTONE_A’s students helped us troubleshoot this problem. They successively replaced the original equipment with customized PWM driving board, which improved the stability and safety of the circuit (Fig.3).

  • Fig.2 Initial construction of the hardware with KEYSTONE_A.
  • Fig.3 KEYSTONE_A helped with troubleshooting for PWM driving board.

The final result was a success to both of our teams. We have finished the assembly of the entire hardware and the idling test proved that it could work well continuously for more than 24 hours. Due to the COVID-19 pandemic, our experiments were limited and we could only finish the theory part of our project. Thus, the Rotary Disc Reactor will be put into practical usage in the second phase of our project next year. Both of our teams are looking forward to further cooperation next year (Fig.4).

Fig.4 Members from BNDS_China (Right) and Keystone (Left) responsible for hardware construction and partnership.