Abstract:
Wastewater pollution has become a serious environmental problem for the human and
other living organisms. The source of waste could be originated from dye residues.
Effluent from textile industry contain recalcitrant compounds that are difficult to
degrade. One of the most widely used dyes is methylene blue. Different methods have
been applied to cope with these compounds. Photocatalysis are considered as the most
effective and efficient way to degrade dyes. In this study, the composite
MnO2/Bentonite have been prepared as the catalyst by the reaction between KMnO4,
glucose and bentonite. The as-synthesized composite was characterized by XRD for
the determinate of crystal size and crystal phase. The XRD results indicated that the
cryptomelane-type manganese oxide have been successfully obtained. The
photocatalysis activity of MnO2/Bentonit was tested for degradation of methylene blue
and the maximum degradation of 50 ppm methylene blue was 85.62% under conditions
of methylene blue with pH=5 and 25 mg of MnO2/Bentonite for 120 minute.