Engineering properties of soil amended by hydrochar, a new resource derived from food wastes
Project Description
We are generating tonnes of food wastes daily, and they are normally sent to landfill. A sustainable way to reduce with the amount of wastes landfilled is to upcycle them to a new resource called hydrochar. Hydrochar is a carbon- and nutrient-rich charcoal, which is produced by submerging wastes into water under high temperature and high pressure (a process called hydrothermal carbonisation). Hydrochar has been suggested to amend the shallow soil in slopes to support plant growth and improve sustainability and biodiversity. However, the underlying mechanism of hydrochar-soil interaction is unknown; it is also unclear how the presence of hydrochar may modify some fundamental geotechnical properties of the soil. This group project will apply the state-of-the-art testing equipment in the geotechnical laboratory to measure the effects of hydrochar on different soil properties relevant to geotechnical engineering:
LEUNG Anthony
Course type
Applicant's Roles
Soil strength parameters including cohesion and friction angle are necessary for slope stability analysis and design. How the presence of hydrochar affects the shearing properties, and hence these strength parameters, of the amended soil will be measured by standard direct-shear apparatus in this project
Applicant's Learning Objectives
- Appreciate the importance of using environmentally-friendly and sustainable materials for improving soil properties
- Learn shear strength theories for soil
- Gain handon experience in operating a state-of-the-art equipment for soil testing
- Learn data interpretation method
Complexity of the project