| Summary: | Generally, waste water contains a large variety of organic and inorganic compounds. Most organic compounds are resistant to conventional chemical and biological treatments. Among them are aro
matic compounds, such as toluene. This paper presents the results of experimental oxidation of toluene with combinations ofUV and HP2 which are usually called Advanced Oxidation Processes (AOPs). The experiments were performed in a batch system at room temperature. The experimental results exhibit that both initial concentration of hydrogen peroxide and initial pH affect the degree of oxidation. I t is found that the order of reaction is pseudo first order with regard to toluene. The value of kapplllen. is observed linearly with respect to the initial hydrogen peroxide concentration and exponentially with regard to the initial pH. The effect of the initial hydrogen peroxide concentrations
on k is ex
p
ressed as k = 0,0015 C. ..
1
+ 0,0204 min-I and of the initial values of
p
H is k
.pparml apparent Imtia appar
1
= 0,0309 .o,027(
p
H) min-I. The effect of C. .
1
'
I
and
P
H on k
.
can be ex
p
ressed as k
.
= (0,0374
cn 101 18 apparen apparen
+ 0,0009 Cinitia') e -0,0316 (pH) min-I.
Keywords: toluene, UV radiation, hydrogen peroxide, wastewater
Umumnya limbah cair mengandung bermacam-macam senyawa organik dan unorganik. Sebagian hesar senyawa organik. diantaranya adalah senyawa-senyawa aromatis. seperti toluene. tidak dapat dikenakan proses kemis maupun biologis konvensional. Tulisan ini menyajikan hasil penelitian yang terkait dengan oksidasi toillen dengan gabungan UV(ultra violet) dan HzOz yang sering disebut Advanced Oxidation Processes (AOPs). Percobaan dilakukan di dalam sebuah reaktor batch pada suhu kamar. Hasil penelitian menunjukkan bahwa konsentrasi awal HzOz maupun pH, mempengarllhi tingkat oksidasi toluen. Order reaksi yang sesuai dengan sistem ini adalah reaksi order satll semll terhadap to/lien, Hllbungan nilai ka pare.' dengan konsentrasi awa/ HzOz adalah linier sedan
gkan hllbllngan kappare., dengan pH ad alar
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