Biodegradation of gas and volatile hydrocarbons in seawater

The dataset describe chemical analyses of the gases methane, ethane and propane, and analyses of volatile organic compounds in laboratory experiments with water-accommodated fractions (WAFs) or seawater with or without injection of a mixture of the gases methane, ethane and propane. The laboratory experiments were performed with natural non-amended seawater from a Norwegian fjord, and generation of the WAFs by low-energy (LE-WAF) in the seawater. LE-WAFs were generated With both high dosage of oil to seawater (1:100)(HC-LE-WAFs) and low dosage of oil to the seawater (1:10,000)(LC-LE-WAF). Biodegradation experiments with HC-LE-WAFs were performed at 5°C for 30 days, and with LC-LE-WAFs at 5°C for 64 days. Gas mixtures (methane, ethane and propane) were injected in seawater without LE-WAF, or in LE-WAFs for comparison. Experiments were also performed with LE-WAFs with or without injection of gas mixtures.本数据集涵盖甲烷、乙烷与丙烷气体的化学分析结果，以及两类实验室实验体系中获得的挥发性有机化合物分析数据：其一为使用水容性馏分（water-accommodated fractions, WAFs）的体系，其二为分别注入/未注入甲烷、乙烷、丙烷混合气体的天然海水体系。本次实验采用取自挪威峡湾的未改性天然海水，并通过低能耗工艺在海水中制备得到低能耗水容性馏分（low-energy, LE-WAF）。低能耗水容性馏分分为两类：油海水投加比为1:100的高投加量体系（HC-LE-WAFs），以及油海水投加比为1:10000的低投加量体系（LC-LE-WAF）。针对HC-LE-WAFs的生物降解实验于5℃下开展，时长为30天；针对LC-LE-WAF的生物降解实验同样于5℃下开展，时长为64天。为开展对照研究，研究人员分别在未添加LE-WAFs的海水，以及LE-WAFs体系中注入了甲烷、乙烷与丙烷的混合气体。此外，研究人员还针对LE-WAFs体系开展了实验，分别设置了注入与未注入混合气体两组工况。