Soil bioassays as tools for sludge compost quality assessment

Earthworm Biomarkers as Tools for Soil Pollution Assessment

The Effect of Compost and Sewage Sludge on Soil Biologic Activities in Salt Affected Soil

Saline soil was amended with 13.3 and 26.6 g kg of Municipal Solid Waste (MSW) compost or sewage sludge, and arylsulphatase (ARY), phosphatase (PHO), dehydrogenase (DEH), β-glucosidase (β-GLU), urease (URE) and catalase (CAT) activities as well as physical-chemical properties were determined after 70 day of incubation under laboratory conditions. MSW compost and sewage sludge significantly impr...

Field assessment of soil quality as affected by compost and fertilizer application in a broccoli ®eld (San Benito County, California)

Selected in-®eld physical, chemical and biological indicators were measured for the rapid assessment of soil quality changes in a Sorrento silty clay loam as a result of compost and ammonium nitrate application to a broccoli ®eld (San Benito County, CA). Plots were laid out in a randomized complete block design with four replications of 0, 22 and 44 Mg haÿ1 compost treatments which were split t...

4 Bioassays as a tool for the assessment of the quality of dredged material

The application of bioassays for the assessment of dredged material is advised by the dredged material management guidelines of international conventions (chapter D 4.2). However, on a national level the implementation of bioassays for the purpose of dredged material management is still under development. In the Netherlands a number of bioassays are evaluated and their implementation is schedul...

Degradation and environmental risk of surfactants after the application of compost sludge to the soil.

In this work, the degradation of anionic and non-ionic surfactants in agricultural soil amended with sewage sludge is reported. The compounds analysed were: linear alkylbenzene sulphonates (LAS) with a 10-13 carbon alkylic chain, and nonylphenolic compounds (NPE), including nonylphenol (NP) and nonylphenol ethoxylates with one and two ethoxy groups (NP1EO and NP2EO). The degradation studies wer...