Development of Integrated Photobioelectrochemical System (IPB): Processes, Modeling and Applications
| dc.contributor.author | Luo, Shuai | en |
| dc.contributor.committeechair | He, Zhen | en |
| dc.contributor.committeemember | Feng, Xueyang | en |
| dc.contributor.committeemember | Young, Erica Rachel | en |
| dc.contributor.committeemember | Dietrich, Andrea M. | en |
| dc.contributor.committeemember | Wang, Zhiwu | en |
| dc.contributor.department | Civil and Environmental Engineering | en |
| dc.date.accessioned | 2018-04-25T08:00:42Z | en |
| dc.date.available | 2018-04-25T08:00:42Z | en |
| dc.date.issued | 2018-04-24 | en |
| dc.description.abstract | Effective wastewater treatment is needed to reduce the water pollution problem. However, massive energy is consumed in wastewater treatment, required to design an innovative system to reduce the energy consumption to solve the energy crisis. Integrated photobioelectrochemical system (IPB) is a powerful system to combine microbial fuel cells (MFCs) and algal bioreactor together. This system has good performance on the organic degradation, removal of nitrogen and phosphorus, and recover the bioenergy via electricity generation and algal harvesting. This dissertation is divided to twelve chapters, about various aspects of the working mechanisms and actual application of IPB. Chapter 1 generally introduces the working mechanisms of MFCs, algal bioreactor, and modeling. Chapter 2 demonstrates the improvement of cathode material to improve the structure and catalytic performance to improve the MFC performance. Chapter 3 describes the process to use microbial electrolysis cell (MEC) to generate biohythane for the energy recovery. Chapters 4 and 5 demonstrate the application of stable isotope probing to study Shewanella oneidensis MR-1 in the MFCs. Chapters 6 to 8 describe the application of models to optimize MFC and IPB system performance. Chapter 9 describes the strategy improvement for the algal harvesting in IPB. Chapter 10 describes the application of scale-up bioelectrochemical systems on the long-term wastewater treatment. Chapter 11 finally concludes the perspectives of IPBs in the wastewater treatment and energy recovery. This dissertation comprehensively introduces IPB systems in the energy recovery and sustainable wastewater treatment in the future. | en |
| dc.description.abstractgeneral | The resource of pure water becomes more and more valuable, and the large discharge of the wastewater into the environment would even cause the environmental pollution. Thus, the wastewater is a necessary method to remove the organics out of the wastewater. However, the large energy consumption is a critical issue to solve due to the global energy burden. How to reduce the energy consumption in the wastewater treatment is the required step to achieve the sustainable water treatment. Integrated photobioelectrochemical system (IPB) is a new promising technology, alternative to the traditional wastewater treatment techniques (e.g., anaerobic digester or activated sludge reactor) with low energy consumption. The IPB system was to combine microbial fuel cells (MFCs), which is a typical bioelectrochemical system (BES), and the algal bioreactor together, to achieve the performance on the organic degradation, removal of nitrogen and phosphorus in the wastewater, and recover the bioenergy via electricity generation and algal harvesting. The system was proved to be effective, but most of the IPB systems were only proved to work in the laboratories, and there is still a large potential space to improve the IPB system performance in the actual environment. Herein, this dissertation combines multiple studies about the IPB improvement and scaled-up process in the real wastewater treatment. Chapter 1 generally introduces what are MFCs, algal bioreactor and modeling simulations. Chapter 2 demonstrates the method about how to improve the MFC material to enhance the treatment performance for better MFC performance. Chapter 3 describes how to use BES to convert the organics to the renewable gas (e.g., H₂ and CH₄) to recover the energy. Chapters 4 and 5 demonstrate the application of stable isotope probing to study the microbial behavior in the MFC. Chapters 6 to 8 describe the applications of model simulations to optimize MFC and IPB performance. Chapter 9 describes the new reactor to improve the algal harvesting process to obtain more energy from the IPB system. Chapter 10 describes how to use the scale-up IPB system to treat the real wastewater treatment. Chapter 11 finally puts forward some perspectives of IPBs in the wastewater treatment and energy recovery. This dissertation comprehensively gives a big picture about the development of IPB systems in the energy recovery and sustainable wastewater treatment in the future. | en |
| dc.description.degree | Ph. D. | en |
| dc.format.medium | ETD | en |
| dc.identifier.other | vt_gsexam:14778 | en |
| dc.identifier.uri | http://hdl.handle.net/10919/82911 | en |
| dc.publisher | Virginia Tech | en |
| dc.rights | In Copyright | en |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
| dc.subject | Bioelectrochemical system | en |
| dc.subject | algae | en |
| dc.subject | microbial fuel cell | en |
| dc.subject | energy recovery | en |
| dc.subject | wastewater treatment | en |
| dc.title | Development of Integrated Photobioelectrochemical System (IPB): Processes, Modeling and Applications | en |
| dc.type | Dissertation | en |
| thesis.degree.discipline | Civil Engineering | en |
| thesis.degree.grantor | Virginia Polytechnic Institute and State University | en |
| thesis.degree.level | doctoral | en |
| thesis.degree.name | Ph. D. | en |
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