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Feasibility Assessment of Two Biogas-Linked Rural Campus Systems: A Techno-Economic Case Study

by Liqin Zhu 1,2 and Congguang Zhang 3,*
School of Marxism, Hohai University, Nanjing 210098, China
State Key Laboratory of Hydrology—Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
Yangling Tuojiang Agricultural Technology Co. LTD, Shaanxi 712100, China
Author to whom correspondence should be addressed.
Processes 2020, 8(2), 180;
Received: 6 January 2020 / Revised: 26 January 2020 / Accepted: 29 January 2020 / Published: 5 February 2020
(This article belongs to the Special Issue Anaerobic Digestion Processes)
The principle of sustainable development is becoming more and more prominent in various schools, and the eco-campus in rural areas often has more room for display. The identification and assessment of cost-effective biomass resources appropriate for recycling represent an opportunity that may significantly improve the comprehensive efficiency of an eco-campus system, resulting in remarkable investment savings, pollution reduction, as well as reducing energy consumption and resources waste. The economic feasibility of two biogas-linked rural campus systems (Fanjiazhai Middle School, FJZ and Xidazhai Middle School, XDZ, Yangling, China), as well as their key technologies, is investigated, the two systems respectively represent two biobased agricultural production modes. It is found that the initial investment, operating investment, and total revenue of FJZ system is 1.37 times, 2.39 times, and 1.71 times of XDZ system respectively, thus indicating that FJZ campus is proved to be a “larger” system compared to the other one. The operating costs show that reasonable control of labor and transportation costs should be carried out to optimize the economic feasibility of the system. After considering the system’s economic credits obtained from using biogas slurry flushing system and avoiding waste management, the net present value of XDZ system had increased to its 1.5 times, while the FJZ system had increased to its 135%. From the perspective of revenue to investment ratio, XDZ system has a better profit earning efficiency compared to FJZ system. The sensitivity analysis indicates that biogas price, fruit yield, labor use are main factors that have the greatest impacts on the economic performance of these eco-campuses. View Full-Text
Keywords: techno-economic analysis; eco-campus; sustainable development; biomass conversion techno-economic analysis; eco-campus; sustainable development; biomass conversion
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Zhu, L.; Zhang, C. Feasibility Assessment of Two Biogas-Linked Rural Campus Systems: A Techno-Economic Case Study. Processes 2020, 8, 180.

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