NDLI: Soil Retention Capacity of Phenols from Biologically Pre-Treated Kraft Mill Wastewater

Content Provider	Springer Nature Link
Author	Diez, M. C. Quiroz, A. Ureta Zañartu, S. Vidal, G. Mora, M. L. Gallardo, F. Navia, R.
Copyright Year	2005
Abstract	Allophanic soil, natural and activated by acidification or calcination was used to adsorb organic recalcitrant compounds (lignin and chlorophenols) from biologically pre-treated kraft mill effluent. A synthetic non crystalline aluminosilicate like allophane coated with iron oxide (Al-Si-Fe) was used as control for comparison purposes. It was observed that the adsorption capacity of the allophanic soil increased at higher solid/solution ratio, and at lower pH values. The highest total phenolic compounds removal was obtained between pH 4.0 and 4.5 for natural and activated soil using a solid/solution ratio of 1:5, and for synthetic aluminosilicate using 300 mg in 30 mL of effluent solution. Soil activated by calcination procedure presented the highest total phenolic compounds adsorption capacity (71–85%) for untreated and aerobic or anaerobic pre-treated effluent. The specific chlorophenols analysis indicated that pentachlorophenol (PCP) was almost completely adsorbed onto the allophanic soil (> 99%), and that over 79% of the 2,3,4,6-tetrachlorophenol (TeCP) was adsorbed, independent of the biological pre-treatment type and the soil activation procedure. On the other hand, 2,4-dichlorophenol (DCP) coming from both aerobic and anaerobic treated effluent was poorly removed (24–30%) when natural soil was used for adsorption; whereas in calcinated and acidified soil DCP removal was more than 71%.
Starting Page	325
Ending Page	339
Page Count	15
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	163
Issue Number	1-4
e-ISSN	15732932
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2005-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	adsorption allophanic soil chlorophenols kraft mill wastewater Hydrogeology Environment Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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