Leaching of major and trace elements from paper-plastic gasification chars: An experimental and modelling study

► Biomass gasification chars are good sorbents for mercury capture. ► Similar results were found in an experimental and a modelling study of leaching. ► Char samples could be acceptable at landfills as non-hazardous waste. ► Sorption on the solid surfaces of the char is negligible at alkaline pH values. ► Complexation involving dissolved organic matter plays an important role at higher pH values.