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:

Supervisor
LEUNG Anthony
Quota
10
Course type
UROP1000
UROP1100
UROP2100
UROP3100
UROP4100
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
Moderate