PENERAPAN PERSAMAAN GEOTERMOMETER (SiO2)p DI LAPANGAN PANAS BUMI SULI, AMBON

Suli hot springs area has a low level of acidity or neutral pH ranges (7,2–7,7). It is also supported by a high chloride concentration value, which ranges (208,87-226,27) ppm. Thisshows that the area on station 1, 2, 3, and 4 are located in areas with water flow into the upper reservoir (upflow) and belongs to hot water domination reservoir tipe (water heatedreservoir). Reservoir temperature is calculated by the formula geotermometer (SiO2)p considered whether applied in the four kinds geotermometer equation because it gives the calculation results are not much different temperature and has a value of rms-error is less than 2%. Reservoir temperature at a hot springs station Suli possible temperature (161 ± 0,9)oC. Reservoir temperature at station 2 hot spring Suli possible hot water temperature (172 ± 1,0)oC. Reservoir temperature at station 3 hot springs Suli possible temperature (171 ±0,9)oC. Reservoir temperature at station 4 hot springs Suli possible temperature (169 ± 1,0)oC.

Effect of Antimony on the Corrosion Resistance of Steel in Acid Solution with High Chloride Concentration

This study focused on the effect of antimony on the corrosion resistance of low alloy steel using electrochemical techniques such as dynamic scanning and EIS and immersion test in an acid solution with high chloride concentration. The potentiodynamic test showed the anodic and cathodic corrosion behavior of all specimens and the corrosion rate decreased with increasing antimony addition. EIS showed that the antimony-containing steels had higher rust layer resistance. These test results showed the addition of antimony was convenient to the enhancement of corrosion resistance of the steel in the acid solution with high chloride concentration. The tests proved that the content of antimony controlled to 0.12% in the steel showed the best corrosion resistance.