Flocculant in wastewater affects dynamics of inorganic N and accelerates removal of phenanthrene and anthracene in soil

被引：9

作者：

Fernandez-Luqueno, F. ^{[1
]}

Thalasso, F. ^{[1
]}

Luna-Guido, M. L. ^{[1
]}

Ceballos-Ramirez, J. M. ^{[1
]}

Ordonez-Ruiz, I. M. ^{[1
]}

Dendooven, L. ^{[1
]}

机构：

[1] CINVESTAV, Dept Biotechnol & Bioengn, Lab Soil Ecol, Mexico City 07360, DF, Mexico

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2009年 / 90卷 / 08期

关键词：

Polyacrylamide; Alkaline-saline soil; Anthracene and phenanthrene contamination; Emissions of CO2; N mineralization; Wastewater sludge; Texcoco soil; POLYCYCLIC AROMATIC-HYDROCARBONS; NITROGEN MINERALIZATION; PAH DISSIPATION; POLYACRYLAMIDE; BIODEGRADATION; BIOREMEDIATION; CARBON; BIOAVAILABILITY; DEGRADATION; TEMPERATURE;

D O I：

10.1016/j.jenvman.2009.03.010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Recycling of municipal wastewater requires treatment with flocculants, such as polyacrylamide. It is unknown how polyacrylamide in sludge affects removal of polycyclic aromatic hydrocarbons (PAH) from soil. An alkaline-saline soil and an agricultural soil were contaminated with phenanthrene and anthracene. Sludge with or without polyacrylamide was added while emission of CO2 and concentrations of NH4+, NO3-, NO2-, phenanthrene and anthracene were monitored in an aerobic incubation experiment. Polyacrylamide in the sludge had no effect on the production of CO2, but it reduced the concentration of NH4+, increased the concentration of NO3- in the Acolman soil and NO2- in the Texcoco soil, and increased N mineralization compared to the soil amended with sludge without polyacrylamide. After 112 d, polyacrylamide accelerated the removal of anthracene from both soils and that of phenanthrene in the Acolman soil. It was found that polyacrylamide accelerated removal of phenanthrene and anthracene from soil. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2813 / 2818

页数：6

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