Open AccessThe Effects of Pyrolysis Temperature on Chemical Properties of Empty Fruit Bunch and Palm Kernel Shell Biochars
Author(s) -
Abdul-Sommed Hadi,
A S Norazlina
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/757/1/012029
Subject(s) - biochar , pyrolysis , palm kernel , cation exchange capacity , adsorption , raw material , chemistry , charcoal , cadmium , heat of combustion , pulp and paper industry , palm oil , organic chemistry , soil water , environmental science , food science , soil science , engineering , combustion
Biochar is a valuable by-product which has a potential as a new soil amendment in improving soil fertility. However, the properties of biochar highly depend on the types of feedstock used and the pyrolysis condition. Therefore, this study was conducted to evaluate the effects of pyrolysis temperature on chemical properties of biochar derived from oil palm. Two types of biochars were produced from empty fruit bunch (EFB) and palm kernel shell (PKS) by slow pyrolysis process applied at different levels of pyrolysis temperature (350, 500 and 750°C). The chemical properties of biochars such as pH, electricity conductivity (EC), total nutrients and cation exchange capacity (CEC) were determined. The adsorption capacities of cadmium on biochars also were investigated. The results showed that pH value, EC and total macronutrients for both EFB and PKS biochars increased with the increased of temperature. In contrast, CEC value decreased when pyrolysis temperature is increased. Biochar derived from EFB produced at 750°C showed the highest adsorption capacity of cadmium.