Selective removal of resin and fatty acids from mechanical pulp effluents by ozone

被引:34
作者
RoyArcand, L
Archibald, F
机构
[1] Pulp and Paper Res. Inst. of Canada, Pointe Claire, Que. H9R 3J9
关键词
chemithermomechanical pulps; effluent treatments; ozone; resin acids; toxicity; juvabiones; softwoods;
D O I
10.1016/0043-1354(95)00291-X
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Fresh chemithermomechanical (CTMP) mill primary clarifier (combined) effluents were treated using a system capable of accurately applying small measured charges of ozone. It was shown that the efficiency of ozone transfer into effluent was much better than into water, and that there was no residual dissolved ozone. Small ozone charges destroyed high proportions of the total resin and fatty acids (RFAs) and juvabiones (JBs) present in the effluents. This effect diminished with increasing ozone charges. Likewise, effluent toxicity, as measured in the Microtox assay, decreased rapidly with the low ozone charges. The low charges of ozone were also shown to be effective in destroying both soluble and particulate RFAs. It was shown that there was a strong positive correlation between the RFA content and the acute toxicity of an effluent sample, and that all the acute toxicity was extractable with methyl-t-butyl ether. Both Microtox and Daphnia magna acute toxicity assays correlated with effluent RFA content, but the Microtox was somewhat more sensitive. Thus, ozone may be a useful economical treatment agent for selectively removing RFAs and toxicity from mill effluent streams. Copyright (C) 1996 Elsevier Science Ltd.
引用
收藏
页码:1269 / 1279
页数:11
相关论文
共 38 条
[1]  
BAUMAN HD, 1974, TAPPI, V57, P116
[2]   BACTERIAL DEGRADATION OF DEHYDROABIETIC ACID BY A PSEUDOMONAS AND AN ALCALIGENES [J].
BIELLMANN, JF ;
BRANLANT, G ;
GEROROBE.M ;
POIRET, M .
TETRAHEDRON, 1973, 29 (09) :1237-1241
[3]  
Bulich A., 1981, ASTM STP, P338
[4]  
BURDARKSA G, 1981, TSELULOZA KHARTIYA, V12, P26
[5]   USE OF THE MICROTOX ASSAY SYSTEM FOR ENVIRONMENTAL-SAMPLES [J].
CHANG, JC ;
TAYLOR, PB ;
LEACH, FR .
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 1981, 26 (02) :150-156
[6]   BACTERIAL TRANSFORMATION OF ABIETIC ACID [J].
CROSS, BE ;
MYERS, PL .
BIOCHEMICAL JOURNAL, 1968, 108 (02) :303-&
[7]  
Curtis C., 1982, ASTM SPEC TECH PUBL, V766, P170
[8]   THE MICROTOX AS AN ALTERNATIVE ASSAY IN THE ACUTE TOXICITY ASSESSMENT OF WATER POLLUTANTS [J].
DEZWART, D ;
SLOOFF, W .
AQUATIC TOXICOLOGY, 1983, 4 (02) :129-138
[9]  
DORICA J, 1979, PULP PAP-CANADA, V80, P65
[10]  
Ekman R., 1990, NORDIC PULP PAP RES, V5, P96, DOI [10.3183/npprj-1990-05-02-p096-103, DOI 10.3183/NPPRJ-1990-05-02-P096-103]