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Adsorpsi Ion Logam Cr (VI) dari Adsorben Karbon Aktif Tongkol Jagung (Zea Mays)
Khalisa Khalisa
; Fahilatul Syukro
; Nuzulia Yona
; Putri Nugraha
; Edi Nasra
; Desy Kurniawati
Jurnal Pendidikan Kimia, Fisika dan Biologi
Vol 1
, No 4
(2025)
The use of Cr (Chromium) in industry and daily life produces toxic waste harmful to humans and the environment. This study aims to evaluate the effectiveness of activated carbon from corn cobs as an adsorbent for Cr(VI) heavy metal. Corn cobs, which contain 40–44% cellulose, were carbonized at 500°C using 6% sodium carbonate and characterized with an IR spectrophotometer. Adsorption tests were conducted by varying pH and contact time to determine optimal conditions. FTIR results revealed functio...
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Kinetika Adsorpsi Zat Warna Metilen Blue Menggunakan Silika Xerogel dari Abu Terbang (Fly Ash)
Annisa Haqqu
; Edi Nasra
; Desy Kurniawati
Jurnal Pendidikan Kimia, Fisika dan Biologi
Vol 1
, No 4
(2025)
Coal is an organic mineral from ancient plant remains that settles and goes through physical or chemical processes over a period of up to millions of years. Coal is used as a source of steam-powered electrical energy through combustion which produces fly ash waste. fly ash contains various chemical materials such as SiO2; Al2O3; Fe2O3. The potential chemical content makes fly ash which can be used as an adsorbent for heavy metals and dyes by forming silica xerogel. To increase the silica oxide c...
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