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.
The recent sharp resurgence in local infected cases has again pushed the normalisation of life and business in Hong Kong beyond reach. The cluster outbreak of unknown origins in densely populated parts of the city is particularly alarming...