IDENTIFICATION OF WOOD AND BARK EXTRACTIVES AND THEIR TOXICOLOGICAL EFFECTS ON THE TMP EFFLUENTS

编号 zgly0000333584

文献类型 期刊论文

文献题名 IDENTIFICATION OF WOOD AND BARK EXTRACTIVES AND THEIR TOXICOLOGICAL EFFECTS ON THE TMP EFFLUENTS

作者 XiaokunZhang  MohiniSain 

作者单位 Ph.D.CandidateEarthScienceCentre33WillcocksStreetUniversityofTorontoCanadaM5S3B 

母体文献 天津科技大学学报 

年卷期 2004,19(A02)

页码 181-186

年份 2004 

分类号 X793.031 

关键词 毒理作用  热机纸浆废水  废水处理  木质萃取物  脂肪酸 

文摘内容 Wood extractives in model TMP effluents and bio-treated TMP mill effluent were extracted, isolated with liquid-liquid extraction, and analyzed with GC/MS following sylilation. Acute and chronic toxicity of the effluent samples were tested with Ceriodaphnia dubia. Wood and bark extractives are responsible for the toxicity of the TMP effluent to aquatic life. Resin and fatty acids have a dominating contribution to acute toxicity. Removal of them from the effluent cannot deplete all toxicants, some neutral extractives such as phytosterols, are still chronically toxic to Ceriodaphnia dubia. Wood bark has a dramatic impact on acute toxicity of the TMP effluent. Only 5% of spruce bark addition can increase acute toxicity by 38.4%. However, it has a reverse trend for chronic toxicity, which indicates that some neutral wood extractives may play important role in chronic toxicity of the TMP effluent as well. Successful control of the debarking process and debark effluents is essential for achieving high-quality effluent treatment。