With the increasing demand for energy in countries around the world, the development of biomass energy has become an important issue today. However, anaerobic digestion is a technology that uses microorganisms to convert waste into biogas under anaerobic conditions. The annual output of mushrooms in Taiwan exceeds 1.5 million tons, and the annual output of discarded space bags is 200,000 tons. The spent mushroom substrate (SMS) is often treated by burned or piled in the wild.It is convenient but also cause environmental pollution. SMS contains a large amount of cellulose, which can be used for anaerobic digestion to produce biogas and then used for industrial power generation. To achieve the purpose of circular economy that converted waste into biomass energy. Our plan develops a two-stage reactor to allow different colonies to grow in a suitable environment to solve the problem of mutual inhibition between microorganisms, and establish the best C/N ratio and nitrogen source (such as chicken manure, urea and chicken feathers) through co-digestion to solve the problem of insufficient nutrient sources in the system. At the same time, our plan developed dry anaerobic digestion to increase the processing content of waste. Dry anaerobic digestion can withstand higher organic loading capacity and its reactor volume is reduced, which helps to cost down the labor costs and time costs.It also cause a large amount of inhibitors to accumulate. Our plan addition the Camellia Oleifera shell biochar into anaerobic digestion.It can accelerate the production of VFA in the hydrolysis /acidification stage, accelerate the degration of VFA during methanogesis, and provide buffering capacity to reduce the inhibitor of the digestion system to increase the biogas production and solve the problem for high total solid concentration. Finally, we conduct continuous system to improve the stability of the system, and establish economic value reactors and systems for treating of waste mushrooms.
|Effective start/end date||1/06/22 → 31/05/23|
UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):
- Camellia Oleifera shell biochar
- spent mushroom substrate
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