Open AccessUtilization of Yogyakarta natural zeolites to reduce NH4 and NO2 levels in shrimp pond water and its kinetic rate study
Author(s) -
Didi Dwi Anggoro,
Luqman Buchori,
Indro Sumantri,
Iván Iván,
D. A. B. Sejati,
Herawati Oktavianty
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/578/1/012026
Subject(s) - zeolite , adsorption , shrimp , chemistry , activated carbon , reaction rate constant , natural gas , chemical engineering , kinetics , environmental engineering , nuclear chemistry , catalysis , organic chemistry , fishery , environmental science , engineering , biology , physics , quantum mechanics
Natural zeolite is an unique crystal that has a very small and uniform pore size when compared to other adsorbents, such as activated carbon and silica gel. This study aims to determine the potential of natural zeolite as an adsorbent, to absorb toxic gases in pond water, especially shrimp ponds and to study its kinetics rate of NH 4 and NO 2 adsorption. This study consisted of two stages: activated zeolite using NaOH, and tested the absorption power of NH 4 and NO 2 gases. Zeolite was activated using NaOH where 25 grams of zeolite were mixed with 0.5N NaOH and heated for 2 hours at 70°C, then stirred and dried in an oven at 110°C for 4 hours. Then zeolite was cooled in a desiccator. The results of NH 4 and NO 2 gas adsorption showed that natural zeolites can reduce NH 4 and NO 2 gas levels in shrimp pond water. The rate constant of pseudo-second-order, and the initial adsorption rate at any given time t, can be predicted from the equation which is full zeolite obtained the best perform of NH 4 and NO 2 adsorption.