CD Skripsi
Pengaruh Variasi Konsentrasi Naoh Pada Karbon Aktif Limbah Baglog Jamur Tiram Terhadap Adsorpsi Logam Cu2+
ABSTRACT
Oyster mushroom baglog waste can produce 1 to 2 tons of waste in one harvest
cycle. This waste has a fairly high lignocellulose content so that it has the potential
to be used as a basic material for making activated carbon. This study aims to
determine the effect of variations in NaOH activation concentration on the
adsorption capacity of activated carbon from baglog waste in removing heavy
metal Cu2+. The synthesis process of activated carbon adsorbent is carried out
through the stages of dehydration, carbonization at a temperature of 500℃ for 60
minutes, and chemical activation using NaOH solution with concentration
variations of 0.1 N; 0.2 N; 0.3 N; and 0.4 N. The results showed that the best
activated carbon came from 0.4 N activator with a removal efficiency of 89.68%
against artificial Cu2+ waste. Characterization of the best activated carbon was
carried out using the Scanning Electron Microscope (SEM), Brunauer Emmett
Teller (BET), Fourier Transform Infra Red (FTIR) tests. The SEM test results
showed that the activated carbon of baglog waste after activation had an open and
closed pore structure after the Cu2+ metal adsorption process, indicating the
occurrence of a metal adsorption process on the surface of the adsorbent. Based on
the BET test results, the surface area of activated carbon was 28.50 m2 / g (low),
and the pore size was 3.95 nm (mesoporous). The FTIR test results showed the
presence of functional groups -OH, C–H, C–O, C≡C in the activated carbon of
baglog waste after activation and a shift in wave numbers after the adsorption
process. The Spearman correlation test showed a relationship between variations
in activator concentration and the ability to adsorb artificial Cu2+ metal, with a
significance value of
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