In the proposed study, biochar will be produced from selected vegetable waste (spent coffee grounds and tea leaf residue) through pyrolysis. The sorption mechanisms (adsorption and desorption) of the persistent toxic substances (PTS) mixture, including arsenic (As), zinc (Zn), lead (Pb), mercury (Hg) (total and methylmercury (MeHg)), dichlorodiphenytrichloroethane (DDT), phthalates esters (PAEs), perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) by different size of vegetable-based biochar will be investigated.
The goal of this project is to test experimentally the impact of two different classroom SSA methods as well as to examine the mechanisms by which SSA processes influence student learning.
Solicitor Chong Yiu-kwong, Senior Lecturer II at the Department of Education Policy and Leadership, The Education University of Hong Kong, received a Distinguished Community Service Award from the Law Society of Hong Kong for voluntary service at a presentation ceremony held on 19 December 2019. This is the eighth time he has received the award since 2011.