CD Skripsi
Regenerasi Kimiaadsorben Karbon Aktif Tongkol Jagung Dengan Variasi Jenis Dan Konsentrasi Regeneran
ABSTRAK
Activated carbon has been widely used to remove organic and inorganic pollutants from water and wastewater. The use of activated carbon as an adsorbent in the adsorption process will produce saturated adsorbents which when they reach their maximum adsorption capacity will cause a decrease in adsorption effectiveness, so that the adsorbent is no longer able to absorb pollutants/ contaminants optimally. Saturated activated carbon can be regenerated so that it can be reused in the next adsorption process, with the aim of extending the life of the adsorbent before it becomes waste and reducing the need for new adsorbents. This research aims to study the effect of the type and concentration of regenerants on the regeneration of activated carbon adsorbents from corn cobs. This study was conducted using a chemical regeneration methodology using 2 types of regenerants, which sulfuric acid (H2SO4) and nitric acid (HNO3) and regenerant concentrations of 0.15 M, 0.2 M, and 0.25 M. Regeneration was carried out to desorb iron metal (Fe) in the pores and surface of activated carbon and was carried out for 3 cycles. The results of the study showed that the optimum conditions for the regeneration of corn cob activated carbon can be carried out using sulfuric acid (H2SO4) regenerant and a regenerant concentration of 0.25 M with an activated carbon surface area of 886.08 m2/gr, an adsorption capacity of 3.17 mg/g - 3.85 mg/g, adsorption efficiency of activated carbon after regeneration of 70.13% - 88.07%, and desorption efficiency of 88.31% - 96.28%.
Keywords: Activated carbon, adsorption, regeneration, iron metal (Fe)
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