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Cassava bagasseis a solid tapioca industry waste that can be used as an energy source. In this study, cassava bagassewas pyrolysed to produce bio-oiland studied the effect of Ni/NZA catalysts on yield, heating value and distribution of bio-oilproducts. The making of Ni/NZA catalyst starts with the process of activating natural zeolite to produce natural zeolite activated (NZA). Furthermore,impregnation of Ni metals in NZA with Ni levels1, 2 and 3%w/w (Ni/NZA). The next step is calcination, oxidation and reduction.Cassava is peeled, shredded, washed, filtered and dried and then mashedand screened with a 60 and 80 mesh sieve to obtain cassava bagassebiomass with a size of -60+80 mesh. 50 grams of cassava bagassewith500 ml silinap and 1.5 g Ni/NZA catalyst are pyrolyzed at 320oC with nitrogen gas flow of 80 mL/min. Bio-oilproducts are analyzed by the heatingvalue and distribution of the products. The yieldof bio-oilobtained on pyrolysis using 0% Ni/NZA was 54.27%and pyrolysis using 2% Ni/NZA obtained the highest yieldof 61.87%.The highest bio-oilheatingvalue was obtained in pyrolysis using 0% Ni/NZA which is 46.78 MJ/kg and lower with increasing Ni levels in NZA. The results of GC-MS analysis of the bio-oilproducts showed that the use of 1% Ni/NZA catalyst significantly increased the percent area of several components i.e. 2,4,4-trimethy-l-1-Pentene, 2,5-dimethyl-2,4-Hexadiene, and2,4,4-trimethyl-2-Penteneand decreases the percent area of some other components i.e. 1-bromo-3-methyl-Cyclohexane, 2-methyl-1-Propene,tetramer,1-(1,1-dimethylethoxy)-3-methyl-Cyclohexeneand3-(3,3-dimethylbutyl)-Cyclohexanone.Keywords: bio-oil, cassava bagasse, Ni/NZA catalyst, pyrolysis |
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