RANCANG BANGUN DIGESTER SEMI KONTINYU PADA PRODUKSI BIOGAS DAN PUPUK ORGANIK DARI SAMPAH ORGANIK
Abstract: Production of biogas
and organic fertilizer from organic waste is done by creating a semi-continuous
digester design is a flat pipe and operate continuously or bait can be inserted
periodically every day, and its products can be taken periodically at any time.
At the optimum residence time can be designed digester volume corresponding to
a certain capacity, the variation ratio of the length and diameter of the pipe,
whichever is best for optimum biogas production.
Outcomes of the research is a prototype digester flat pipes that can
operate semi-continuous along with its performance test. Design semi-continuous
digester using pralon pipe diameter of 6 in, with the length of each digester m
A = 2, B = 4 m, and C = 6 m, equipped hopper for feeding suspension, bulkhead
divider so that biogas does not leak, and the stirrer tank float models. The
results showed that the biogas production on day 7 to day 30, there was an
increase biogas production sharply, after it approaching constant and up to 60
days tended to decline. In the longer digester (B and C) there are fluctuations
in the production of biogas. From the graph the relationship between the
capacity of the biogas production time from day 1 to day 60 following
polynomial equation with a similar pattern, for the digester with the equation
y = A + 2,287x -0,026x2 - 8.577 (R¬2 = 0.966); digester B with the equation y =
-0,026x2 2,297x + - 8.683 (R 2 = 0.963); and digester C with equation y =
-0,025x2 2,232x + - 8.886 (R 2 = 0.962).
Mud coming out at the end of the digester after 30 days was collected and
dried as organic fertilizer. Results of laboratory analysis, showed the water
content 10.72%, 44.05% organic C content, C / N Ratio 25.70, total P2O5 content
of 0.67% and 7.71% N levels. This suggests that these parameters meet the
quality standards of organic fertilizers except C / N Ratio greater. But this
is not a problem because the levels of organic C and N levels separately meet
quality standards.
Penulis: Diyono Ikhsan, Dwi
Handayani, Murni
Kode Jurnal: jpkimiadd130364
