Soil retention capacity of phenols from biologically pre-treated kraft mill wastewater
作者： MC Diez , A Quiroz , S Ureta-Zañartu , G Vidal , ML Mora
DOI: 10.1007/S11270-005-1295-5
关键词:
摘要: Allophanic soil, natural and activated by acidification or calcination was used to adsorb organic recalcitrant compounds (lignin chlorophenols) from biologically pre-treated kraft mill effluent. A synthetic non crystalline aluminosilicate like allophane coated with iron oxide (Al-Si-Fe) as control for comparison purposes. It observed that the adsorption capacity of allophanic soil increased at higher solid/solution ratio, lower pH values. The highest total phenolic removal obtained between 4.0 4.5 using a ratio 1:5, 300 mg in 30 mL effluent solution. Soil procedure presented (71–85%) untreated aerobic anaerobic specific chlorophenols analysis indicated pentachlorophenol (PCP) almost completely adsorbed onto (> 99%), over 79% 2,3,4,6-tetrachlorophenol (TeCP) adsorbed, independent biological pre-treatment type activation procedure. On other hand, 2,4-dichlorophenol (DCP) coming both treated poorly removed (24–30%) when adsorption; whereas calcinated acidified DCP more than 71%.
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