过氧化物酶催化去除炼油废水中的酚类物质。

Peroxidase-catalyzed removal of phenols from a petroleum refinery wastewater.

作者信息

Wagner M, Nicell J A

机构信息

Department of Civil Engineering and Applied Mechanics, McGill University, 817 Sherbrooke Street West, Montreal, Quebec, Canada H3A 2K6.

出版信息

Water Sci Technol. 2001;43(2):253-60.

PMID:11380188

Abstract

The phenol content of a petroleum refinery wastewater was reduced below the discharge limit following treatment with horseradish peroxidase and H2O2. Approximately 58% of COD, 78% of BOD5, and 95% of toxicity were removed along with the phenols. As a result of treatment, phenols were transformed into less biodegradable compounds which could be removed by subsequent coagulation and precipitation. Optimization of the peroxide concentration led to 20% enzyme savings. The use of PEG and chitosan as protective additives resulted in 4 and 25-fold reductions in enzyme requirements, respectively. Phenol removal did not appear to be adversely affected by the presence of other hydrocarbons that are frequently present in refinery wastewaters.

摘要

用辣根过氧化物酶和过氧化氢处理后，炼油厂废水中的酚含量降至排放限值以下。约58%的化学需氧量、78%的生化需氧量和95%的毒性与酚类物质一同被去除。处理后，酚类物质转化为生物降解性较低的化合物，可通过后续的混凝和沉淀去除。过氧化物浓度的优化使酶的用量节省了20%。使用聚乙二醇和壳聚糖作为保护添加剂，分别使酶的需求量降低了4倍和25倍。酚的去除似乎不受炼油厂废水中常见的其他碳氢化合物的不利影响。