Biochemical parameters and bacterial species richness in soils contaminated by sludge-borne metals and remediated with inorganic soil amendments

Environmental Pollution
Michel MenchPaolo Nannipieri

Abstract

The effectiveness of two amendments for the in situ remediation of a Cd- and Ni-contaminated soil in the Louis Fargue long-term field experiment was assessed. In April 1995, one replicate plot (S1) was amended with 5% w/w of beringite (B), a coal fly ash (treatment S1+B), and a second plot with 1% w/w zerovalent-Fe iron grit (SS) (treatment S1+SS), with the aim of increasing metal sorption and attenuating metal impacts. Long-term responses of daily respiration rates, microbial biomass, bacterial species richness and the activities of key soil enzymes (acid and alkaline phosphatase, arylsulfatase, beta-glucosidase, urease and protease activities) were studied in relation to soil metal extractability. Seven years after initial amendments, the labile fractions of Cd and Ni in both the S1+B and S1+SS soils were reduced to various extents depending on the metal and fractions considered. The soil microbial biomass and respiration rate were not affected by metal contamination and amendments in the S1+B and S1+SS soils, whereas the activity of different soil enzymes was restored. The SS treatment was more effective in reducing labile pools of Cd and Ni and led to a greater recovery of soil enzyme activities than the B treatment. Bacter...Continue Reading

References

Jan 1, 1992·Annual Review of Biophysics and Biomolecular Structure·J E Coleman

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Citations

May 17, 2013·Environmental Science and Pollution Research International·Verónica GonzálezCornelis A M van Gestel
Dec 18, 2013·Environmental Science and Pollution Research International·Rebeca ManzanoPaula Alvarenga
Jul 30, 2011·Ecotoxicology and Environmental Safety·A LagomarsinoS R Stazi
Apr 9, 2008·The Science of the Total Environment·M Belén HinojosaRoberto García-Ruíz
Sep 3, 2014·Journal of Environmental Management·Zuzana MichálkováVojtěch Ettler
Mar 9, 2006·Environmental Pollution·Michel MenchAnn Ruttens
Aug 1, 2014·Journal of Environmental Management·Sabry M ShaheenChristos D Tsadilas
Sep 11, 2020·Environmental Science and Pollution Research International·Matteo GarauGiovanni Garau
Dec 3, 2020·International Journal of Environmental Research and Public Health·Muhammad NaveedManzer H Siddiqui
May 15, 2013·Environmental Science & Technology·Gudny OkkenhaugJan Mulder

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