การกำจัดก๊าซไฮโดรเจนซัลไฟด์ด้วยตัวกลางที่มีส่วนประกอบของเหล็ก

• 主要作者: อมราวดี มานะจิตต์
• 其他作者: พิชญ รัชฎาวงศ์
• 格式: Theses and Dissertations
• 語言: Thai
• 出版: จุฬาลงกรณ์มหาวิทยาลัย 2008
• 主題: ไฮโดรเจนซัลไฟด์; ไฮโดรเจนซัลไฟด์ > การดูดซึมและการดูดซับ; ดินลูกรัง; Hydrogen sulfide; Hydrogen sulfide > Absorption and adsorption; Laterite
• 在線閱讀: https://digiverse.chula.ac.th/Info/item/dc:44461
• 機構: Chulalongkorn University

This study was aimed at efficiencies of hydrogen sulfide removal by lateritic soils. The research was divided into 3 experimental periods. The first period was to study quantity of total iron, ferrous ion (Fe2+) and iron oxide (Fe2O3) in lateritic soils from Udonthani – Sakonnakhon road and Thare – Si songkhram road at diameters of 2.36 and 1.18 millimeter, and was to select the size which had the highest quantity of iron oxide. The second period was to study different media for the removal of hydrogen sulfide at the depth of 0.2 meter. The columns were built using 0.06 meter-diameter PVC cylinders and with 0.7 meter height. The media used were 1) lateritic soils with no disinfection, 2) lateritic soils with disinfection, 3) lateritic soils disinfected and blended with 10 percent by mass of iron filing and 4) lateritic soils disinfected and blended 20 percent by mass of iron filling. The third period was to study the removal efficiency for hydrogen sulfide at different depth (0.3, 0.4 and 0.5 meters). In this case, media used in the column was chosen from the second period. In second and third period hydrogen sulfide concentration of 50 ppmv at the air flow rate of 8 liters per minute were used for all experimental. From the first experiment, quantity of iron oxide, lateritic soils from Udonthani – Sakonnakhon road at 2.36 millimeter diameter had the most quantity of iron oxide (32.54 percent by mass). From the second experiment, the best media was the disinfected lateritic soils blended with iron filing of 20 percent by mass. Hydrogen sulfide removal capacity at 100 percent was 13 days. Maximum hydrogen sulfide removal rate per mass was 7.34 milligram per gram and total sulphur accumulation was 7.59 percent by weight. The finding of the third experiment was the removal efficiency at different depths. As the depth increased the hydrogen sulfide removal capacity at 100 percent increased too. At the media depth of 0.3, 0.4 and 0.5 meters; the times for 100 percent removal were 18, 25 and 34 days; hydrogen sulfide removal rate per mass was 9.07, 7.57 and 7.57 milligram per gram and the sulphur accumulative were 8.55, 10.20 and 10.71 percent by weight, respectively.