Open AccessThe Analysis of Manganese (Mn) in Waste Water Treatment (IPAL) of Coal Mine of PT Bukit Asam Indonesia
Author(s) -
Getari Kasmiati,
Rona Ayu Sakinah,
Bambang Yudono
Publication year - 2020
Publication title -
ijfac (indonesian journal of fundamental and applied chemistry)
Language(s) - English
Resource type - Journals
eISSN - 2540-9409
pISSN - 2540-9395
DOI - 10.24845/ijfac.v6.i2.53
Subject(s) - manganese , wastewater , atomic absorption spectroscopy , environmental science , coal , detection limit , environmental chemistry , chemistry , environmental engineering , metallurgy , materials science , chromatography , physics , organic chemistry , quantum mechanics
Wastewater from the coal mining process containing heavy metal manganese is bad for water body and health of living things around it. The South Sumatra Governor Regulation states that the content of iron (Fe) and manganese (Mn) must contain a maximum total of 7 mg/L and 4 mg/L before being released into the environment. This study aimed to verify the total dissolved Mn analysis method. Thirty-four (34) samples from the wastewater treatment plant pond were digested and measured by the Atomic Absorption Spectrophotometer (AAS) at a wavelength of 279.5 nm. The analysis performed were the precision, sensitivity, linearity, LOD detection limits and LOQ quantization limits. The measurement results showed the parameter value for a precision of 1.562%; linearity (coefficient of determination) standard curve 0.9939; sensitivity 0.0375; LOD 0.4287 g/mL; and LOQ 1.4291 g/mL. In conclusion, the measurement data for the total dissolved manganese met the quality standards for wastewater stated in the Regulation of the Governor of South Sumatra No.8 of 2012 by applying the predetermined method