Influence of Sewage Sludge Application on Soil Quality: I. Organic Matter, pH, Phosphorus, Potassium, and Inorganic Nitrogen

2015 ◽  
pp. 1709-1718
Author(s):  
C. D. Tsadilas ◽  
V. Samaras
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
Soil Quality ◽  
Inorganic Nitrogen ◽  
Sludge Application

scholarly journals Organic matter mineralisation in contrasting agricultural soils amended with sewage sludge .

2014 ◽  
Vol 4 ◽  
Author(s):  
Jose Navarro Pedreño ◽  
Ignacio Gómez Lucas ◽  
Jose Martín Soriano Disla
Keyword(s):  
Organic Matter ◽  
Single Dose ◽  
Sewage Sludge ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Agricultural Soils ◽  
Dry Weight ◽  
Soil C ◽  
Multiple Sensor ◽  
Sludge Application

The mineralisation of organic matter (OM) when sewage sludge was used as amendment in 70 contrasting agricultural soils from Spain was analysed. Soils received a single dose of sewage sludge (equivalent to 50t dry weight ha<sup>-1</sup>) and the O<sub>2</sub> consumption was continuously monitored for 30 days using a multiple sensor respirometer in a laboratory experiment. The cumulative O<sub>2</sub> consumption and rates after 8 and 30 days of incubation (O<sub>2 cum</sub> 8d, 30d and O<sub>2 rate</sub> 8d, 30d), the respiratory quotient (RQ), the maximum O<sub>2</sub> rates over the incubation period (O<sub>2 max</sub>) and time from the beginning of the incubation when O<sub>2 max</sub> occurred (T<sub>max</sub>), were determined in both amended and non-amended soils. Sewage sludge application resulted in increased values for O<sub>2 max</sub>, O<sub>2 rate</sub> 8d, and O<sub>2 cum</sub> 30d. Differences were minor for T<sub>max</sub>, RQ 8d and O<sub>2 rate</sub> 30d. A considerable amount of the initial OM applied was mineralised during the first 8 days. Organic matter decomposition (as expressed by O<sub>2 cum</sub> 30d) was favoured in soils with high values of pH, carbonates, soil organic carbon and low values of amorphous Mn. Soils with these characteristics may potentially lose soil C after sewage sludge application.

scholarly journals Monitoring the variation of soil quality with sewage sludge application rates in absence of rhizosphere effect

2020 ◽  
Vol 8 (3) ◽  
pp. 245-252
Author(s):  
Rahma Inès Zoghlami ◽  
Helmi Hamdi ◽  
Sonia Mokni-Tlili ◽  
Sarra Hechmi ◽  
Mohamed Naceur Khelil ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Soil Quality ◽  
Rhizosphere Effect ◽  
Application Rates ◽  
Sludge Application

scholarly journals Heavy Metals Behavior in Soil/Plant System after Sewage Sludge Application

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1584
Author(s):  
Urszula Wydro ◽  
Agata Jabłońska-Trypuć ◽  
Eliza Hawrylik ◽  
Andrzej Butarewicz ◽  
Joanna Rodziewicz ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Sewage Sludge ◽  
Catalase Activity ◽  
Urban Soil ◽  
Total Content ◽  
Soil Phytoremediation ◽  
Sludge Application ◽  
Soluble Fractions

One of the possibilities of removing heavy metals (HMs) from soil is the use of phytoremediation techniques supported with biosolids, which also allow for their disposal. Therefore, the objective of the research was the determination of the sewage sludge suitability after its application to urban soil in order to increase the phytoremediation efficiency of contaminated soil. A field experiment was established on lawns in Białystok (Poland) in two locations with different traffic. The research plots were fertilized with sludge in doses of 14.5 t DM/ha and 29 t DM/ha. A mixture of lawn grasses was sown on the prepared plots. During two years of experiment soil/plant samples were collected, and pH, organic matter, dehydrogenase and catalase activity (soil), the total content of Cd, Cr, Cu, Mo, Ni, Pb, Zn, and Hg (soil/plant), and their fractions (soil) were determined. The HMs in soil were present mainly in residual and reducible fractions. Zn had the highest share in acid-soluble fractions (17–45%). The efficiency of urban soil phytoremediation was determined by the calculation of bioconcentration (BCF) and translocation (TF) factors. The highest values for BCF and TF were obtained for Mo (1.97 and 1.99, respectively). In the presented study, sludge amendment caused an immobilization of heavy metals.

scholarly journals Quality of heavy metal-contaminated soil before and after column flushing with washing agents derived from municipal sewage sludge

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Barbara Klik ◽  
Zygmunt M. Gusiatin ◽  
Dorota Kulikowska
Keyword(s):  
Organic Matter ◽  
Sewage Sludge ◽  
Humic Substances ◽  
Soil Quality ◽  
Contaminated Soil ◽  
Sandy Loam ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Soil Toxicity ◽  
Soil Flushing

AbstractRemoval of heavy metals (HMs) from soil is a priority in soil washing/soil flushing. However, for further management of remediated soil, it should be characterized in detail. This study presents, for the first time, an evaluation of soil quality after column flushing with new-generation washing agents (WAs) recovered from municipal sewage sludge (dissolved organic matter, DOM; soluble humic-like substances, HLS; soluble humic substances, SHS) and Na2EDTA as a standard benchmark. Sandy loam soil was spiked with industrial levels of Cu, Pb and Zn, then flushed in a column reactor at two WA flow rates (0.5 and 1.0 ml/min). Soil quality was assessed by determining both physico-chemical (pH, total HMs and their mobility, soil organic matter, OM, humic substances, HS and their fractions, macroelements) and biological indicators (dehydrogenase activity, DHA; germination rate, GR; and inhibition factors for roots and shoots of Triticum aestivum). Total residual HMs contents and HMs contents in the mobile fraction were significantly lower in soil flushed at 1.0 ml/min than in soil flushed at 0.5 ml/min. With all WAs, the decrease in Cu content was larger than that of the other HMs, however this HM most effectively was removed with DOM. In contrast, Pb most effectively was removed by HLS and Na2EDTA, and DOM should not be used to remediate Pb-contaminated soil, due to its very low effectiveness. Flow rate did not appear to affect the fertilizing properties of the soil, DHA activity or soil toxicity indicators. Soil flushing with all SS_WAs increased OM, HS, and exchangeable P, K and Na content in remediated soils, but decreased exchangeable Ca content, and in most cases, exchangeable Mg content. Soil flushing substantially improved DHA activity and GR, but only slightly improved the shoot and root inhibition factors.

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