Open AccessModification of activated carbon of rice husk using HDTMA-Br (SMAC) surfactant as nitrite ion (NO2 −) adsorbent
Author(s) -
Arnelli,
Budi Santoso,
Yayuk Astuti
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1943/1/012159
Subject(s) - adsorption , activated carbon , carbonization , nitrite , chemistry , fourier transform infrared spectroscopy , nuclear chemistry , pyrolysis , inorganic chemistry , organic chemistry , chemical engineering , nitrate , engineering
Surfactant modified activated carbon (SMAC) is a product resulting from the modification of activated carbon with surfactants to increase the adsorption ability of activated carbon against ions in water. Carbonization using pyrolysis at 300°C, 350°C, and 400°C. Activation of carbon was carried out in two ways, the first activation using H 3 PO 4 activator, followed by heating at 410°C for 1 hour. Second, activation using H 3 PO 4 followed by radiation with microwaves. The resulting activated carbon was modified with HDTMA-Br to form SMAC, then SMAC was applied for adsorption of nitrite (NO 2 − ) ions. This study aimed to determine the optimum conditions for carbonization temperature, radiation time, radiation power, adsorption time of HDTMA-Br. The adsorption capacity of SMAC on nitrite ions and the adsorption process of HDTMA-Br were studied (thermodynamic data). Characterization was carried out using FTIR, SEM, and GSA. The optimum carbonization temperature was 300°C; the optimum activation was 5 minutes and 400 watts, the optimum time for HDTMA-Br adsorption was 4 hours with the adsorption capacity was 7.304 mg/g. SMAC is effective in adsorbing nitrite ions where the adsorption capacity was 0.741 mg/g, and the adsorption efficiency is 98.833%. The adsorption of HDTMA-Br on activated carbon was physical adsorption, SMAC has an N-(CH 3 ) 3 group from HDTMA-Br with a SMAC surface area of 24.173 m 2 /g.