Long-term Impact of sewage sludge application on rhizobium leguminosarum biovar trifolii: an evaluation using meta-analysis

The Long-Term Sludge Experiment (LTSE) began in 1994 at nine UK field sites as part of continuing research into the effects of sludge-borne heavy metals on soil fertility. The long-term effects of Zn, Cu, and Cd on the most probable numbers of cells (MPN) of Rhizobium leguminosarum biovar trifolii were monitored for 8 yr in sludge-amended soils. To assess the statutory limits set by the UK Sludge (Use in Agriculture) Regulations, the experimental data were reviewed using statistical methods of meta-analysis. Previous LTSE studies have focused predominantly on statistical significance rather than effect size, whereas meta-analysis focuses on the magnitude and direction of an effect, i.e., the practical significance rather than its statistical significance. Results showed Zn to be the most toxic element causing an overall significant decrease in Rhizobium MPN of −26.6% during the LTSE. The effect of Cu showed no significant effect on Rhizobium MPN at concentrations below the UK limits, although a −5% decrease in Rhizobium MPN was observed in soils where total Cu ranged from 100 to <135 mg kg−1. Overall, there was nothing to indicate that Cd had a significant effect on Rhizobium MPN below the current UK statutory limit. In summary, the UK statutory limit for Zn appears to be insufficient for protecting Rhizobium from Zn toxicity effects

Decay of escherichia coli in soil following the application of biosolids to agricultural land

The decay of Escherichia coli in a sandy loam soil, amended with enhanced and conventionally treated biosolids, was investigated in a field experiment following spring and autumn applications of sewage sludge. Control soils, without the application of biosolids, were also examined to determine the background indigenous populations of E. coli which are present in the environment. The survival of indigenous E. coli and populations of E. coli applied to soil in biosolids, is assessed in relation to environmental factors influencing pathogen-decay processes in soil

The importance of over-the-counter-sales and product format in the environmental exposure assessment of active pharmaceutical ingredients

Item does not contain fulltex

PE pipes for contaminated land

SIGLEAvailable from British Library Document Supply Centre-DSC:7620.3469(99/WM/02/09) / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Plastics pipeline systems Pipeline innovation

Available from British Library Document Supply Centre-DSC:7620.3469(97/WM/2/3) / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

Performance of edge cutting and sealing methods Annual report

SIGLEAvailable from British Library Document Supply Centre-DSC:7620.3469(98/WM/01/41) / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Using computational fluid dynamics to assess the impact of an anti-blockage device on the flow regime and solids retention efficiency of a stilling pond combined sewer overflow

Research carried out under contract by Sheffield Univ. (GB)Available from British Library Document Supply Centre-DSC:7620.348(97/08/3) / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

Civil engineering specification for the water industry

SIGLEAvailable from British Library Document Supply Centre-DSC:m01/23642 / BLDSC - British Library Document Supply Centre5. ed.GBUnited Kingdo

Tapping tees for PVC pressure pipe

SIGLEAvailable from British Library Document Supply Centre-DSC:7620.3469(99/WM/02/9) / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Epoxy resin small diameter distribution mains Cutting, drilling and tapping

SIGLEAvailable from British Library Document Supply Centre-DSC:q97/20382 / BLDSC - British Library Document Supply CentreGBUnited Kingdo