Numerous reports have elucidated the use of biochar (BC) to adsorb dyes from wastewater.
However, its applicability for adsorbing Procion Red, which causes carcinogenic and mutagenic
effects on aquatic life, has not been studied. In this work, biochar produced from rice husk
in Sumatera, Indonesia was used as a biosorbent for Procion Red removal from aqueous systems.
Rice husk-BC was characterised using X-ray diffraction (XRD), Fourier transform infrared (FTIR)
spectroscopy, surface area specific analysis, and scanning electron microscopy (SEM) for morphological analysis. The characterisation showed a (002) reflection peak at 2θ = 23° with broad and
quite intense diffraction, which indicates reflection of electromagnetic waves by silicates, oxides
and carbon present in the rice husk-BC. The surface area and SEM morphologies confirm that
after pyrolysis, the surface of the rice husk changed.Etc...