Assesing efectiveness of sodium metabisulfite for treatment of coal tar wastewater

[摘要] The coal gasification activity produces tar wastewater which can cause serious environmental problems. Research that has been conducted to treat wastewater requires a high cost with a long process. For this reason, it is necessary to find another method that is relatively cheaper and a simple process. that is by adding chemicals. This study aims to determine cheap and effective chemicals for treating tar wastewater. The chemicals used are calcium hipochlorite (CHC), hydrogen peroxide (H2O2), sodium bisulfite (SBS), and sodium metabisulfite (SMBS). The method used is by characterizing the sample, determining the most dominant factor in dissolving tar with the response surface methodology (RSM), and measuring the levels of total organic carbon (TOC), pH, and radioactivity before and after the addition of chemicals. The sample used consisted of two samples named Y and Z. The results showed that the main contents in Y and Z samples were total phenol 28.1 and 37mg/kg, poly aromatic hydrocarbon (PAH) 0.2 dan 0.5 mg/kg, benzene 0.004 dan

[发布机构] RandD Center for Mineral and Coal Technology, Jl. Jenderal Sudirman No 623 Bandung, Indonesia^1;Resources Center for Mineral Coal and Geothermal, Jl. Soekarno-Hatta No.444 Bandung, Indonesia^2;Padjadjaran University, Department of Chemistry, Jl. Bandung-Sumedang, Jatinangor, Indonesia^3

[效力级别] 矿业工程

[关键词] Environmental problems;Gasification activities;Poly aromatic hydrocarbons;Reduction efficiency;Response surface methodology;Sodium bisulfite;Sodium metabisulfite;Total Organic Carbon