Water Pollution Monitoring and Remediation Initiatives Research Group, Centre of Excellence in Carbon-Based Fuels, North-West University, Potchefstroom 2520, South Africa.
Department of Mining Engineering, Florida Science Campus, College of Science Engineering and Technology, University of South Africa, Pretoria 0002, South Africa.
Int J Environ Res Public Health. 2022 Apr 15;19(8):4791. doi: 10.3390/ijerph19084791.
Polycyclic aromatic hydrocarbons (PAHs) have been a problem in the environment for an extended period. They are mostly derived from petroleum, coal tar and oil spills that travel and are immobilized in wastewater/water sources. Their presence in the environment causes a hazard to humans due to their toxicity and carcinogenic properties. In the study, coal tar was analyzed using Gas Chromatography-Mass Spectrometry (GC-MS) and a concentration of 787.97 mg/L of naphthalene, followed by 632.15 mg/L of phenanthrene were found to be in the highest concentrations in the various water sources such as sewage, alkaline and acid mine drainage. A design column was used to investigate the leaching process and assessments were conducted on 300 mL of the various water sources mentioned, with 5 g of coal tar added and with monitoring for 4 weeks. The influence of the physiochemical properties of the receiving water sources, such as sewage, and acid and alkaline mine drainage, on the release of PAHs from the coal tar was assessed. The acidic media was proven to have the highest release of PAHs, with a total concentration of 7.1 mg/L of released PAHs, followed by 1.2 mg/L for the sewage, and lastly, 0.32 mg/L for the alkaline mine drainage at room temperature.
多环芳烃（PAHs）在环境中已经存在了很长一段时间。它们主要来自石油、煤焦油和溢油，这些物质会在废水中迁移并固定下来。由于其毒性和致癌特性，它们在环境中的存在对人类构成了危害。在研究中，使用气相色谱-质谱联用仪（GC-MS）对煤焦油进行了分析，发现各种水源（如污水、碱性和酸性矿山排水）中的萘浓度最高，为 787.97 毫克/升，其次是菲，浓度为 632.15 毫克/升。使用设计柱研究了浸出过程，并对 300 毫升各种水源（如污水、酸性和碱性矿山排水）进行了评估，其中添加了 5 克煤焦油，并监测了 4 周。评估了污水和酸性、碱性矿山排水等受纳水体的物理化学性质对煤焦油中多环芳烃释放的影响。结果表明，酸性介质的多环芳烃释放量最高，释放的多环芳烃总浓度为 7.1 毫克/升，其次是污水，为 1.2 毫克/升，最后是碱性矿山排水，为 0.32 毫克/升，均在室温下进行。
