Correlation between geochemical, mineralogical and physical characters of sediments and salinization phenomena in a pilot area in the ionian plain (Southern Italy)

Summa, Vito; Margiotta, S.; Tateo, Fabio

doi:10.1080/19475705.2018.1539039

Cited by 6 publications

(6 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar behavior was observed in previous researches on other amendments, probably because adding kaolinite and limestone into the sediment effectively slowed down the accumulation of salts [62,63]. A similar variation trend was observed in the salinity, as the EC of the sediments could be confirmed by a strong correlation between the two values [64]. As a previous study has pointed out, the presence of salts in sediment is strongly associated with complex ionic exchange and osmotic effects, which may contribute to the reduction of the mobility of metals in marine sediments [65].…”

Section: The Properties Influencing the Immobilization Effectsupporting

confidence: 88%

An Ex-Situ Immobilization Experiment with Zn, Pb, and Cu in Dredged Marine Sediments from Bohai Bay, China

Zhang

Xiao

Liu

2019

JMSE

View full text Add to dashboard Cite

The remediation of dredged marine sediments contaminated by metals has drawn increasing attention globally. Immobilization was regarded as a promising method for reducing adverse impacts on marine ecosystems. In this study, kaolinite and limestone were used as amendments to immobilize Zn, Pb, and Cu in dredged marine sediments, which were collected from the coastal zone adjacent to Tianjin Port in Bohai Bay. The sequential extraction procedure was applied to identify the mobility of metals and, further, to evaluate the immobilization effect of the amendments. The physical–chemical properties of the sediments, such as the pH, electrical conductivity (EC), salinity, and total organic carbon (TOC), were also measured to better understand their influence on the three metals’ mobility. The results of the sequential extraction procedure indicated that the mobile fractions of the metals were converted into relatively stable fractions because of the two amendments. In addition, the EC, salinity, and TOC decreased moderately, while no obvious variations in the pH of the sediments were observed with the addition of kaolinite and limestone. It was confirmed that both kaolinite and limestone can effectively reduce the mobility and bioavailability of metals, particularly Zn, and limestone generally has a better immobilization effect, compared with kaolinite.

show abstract

Section: The Properties Influencing the Immobilization Effectsupporting

confidence: 88%

An Ex-Situ Immobilization Experiment with Zn, Pb, and Cu in Dredged Marine Sediments from Bohai Bay, China

Zhang

Xiao

Liu

2019

JMSE

View full text Add to dashboard Cite

show abstract

“…The similar behavior was obtained for previous researchers containing other amendments, probably because adding kaolinite and limestone into the sediment effectively slowed down accumulation of salts [62,63]. The similar variation trend in salinity as EC of sediments could be confirmed by a strong correlation between two values [64]. As previous study has pointed out, presence of salts in the sediment is strongly associated with complex ionic exchange and osmotic effects, which may contribute to reduce the mobility of heavy metals in marine sediments [65].…”

Section: The Properties Influencing Immobilization Effectsupporting

confidence: 87%

The ex-situ immobilization experiment of heavy metals in dredged marine sediments from Bohai Bay, China

Zhang¹,

Xiao²,

Liu³

2019

Preprint

View full text Add to dashboard Cite

The remediation of dredged marine sediments contaminated by heavy metals has drawn increasing attention worldly. The immobilization was regarded as a promising method to reduce adverse impacts on marine ecosystem. In this study, kaolinite and limestone were used as amendments to immobilize heavy metals (e.g. Zn, Pb and Cu) respectively in dredged marine sediments collected from the coastal zone adjacent to Tianjin Port in Bohai Bay. The sequential extraction procedure was applied to identify the mobility of heavy metals and further to evaluate the immobilization effect of amendments. The physical-chemical properties of sediments, such as pH, electrical conductivity (EC), salinity, and total organic carbon (TOC), were also measured to better understand their influence on heavy metals’ mobility. In addition, the compositions of clay minerals were also analyzed to identify the transformation process of minerals in the sediments. The results of sequential extraction procedure indicated that mobile fractions of heavy metals were converted into relatively stable fractions because of the two amendments. In addition, EC, salinity and TOC decreased moderately while no obvious variations of pH in the sediments were observed with the addition of the the kaolinite and the limestone. The percentage of montmorillonite decreased to minimum value while that of chlorite increased gradually during the experimental periods for 40 days probably due to complexation reaction. It was confirmed that both kaolinite and limestone can effectively reduce the mobility and bioavailability of heavy metals, particularly for Zn, generally, limestone has a better immobilization effect compared with kaolinite.

show abstract

“…Conversely, the EC was generally reduced in all the samples in soils managed with both conservative and conventional tillage practices. By using ICP-OES analysis, the concentrations of Mg 2+, Ca 2+, Na + , and K + in the investigated samples were the base of the (geo)chemical indexes delineating the most relevant geochemical properties of the investigated soils [76,77]. When comparing the data that refer to the two samples (before seeding vs. after harvest) and the tillage types (conservative vs. conventional), only a few changes of exchangeable cations were observed, although constant values for the CEC were detected.…”

Section: Geochemistrymentioning

confidence: 99%

Going Conservative or Conventional? Investigating Farm Management Strategies in between Economic and Environmental Sustainability in Southern Italy

et al. 2022

Self Cite

View full text Add to dashboard Cite

The European “Green Deal” strategy is aimed at making Europe the first climate-neutral continent by 2050 through integrated actions relying on healthier agricultural systems grounded in (environmental and economic) sustainable practices, including soil carbon management and biodiversity enhancement. In this vein, the present study contrasts the economic-environmental performances of conventional (deep tillage) and conservative (no-tillage and soil ripping) practices for two varieties of durum wheat (Triticum turgidum spp. durum), namely a modern (Anco Marzio) and an ancient landrace (Saragolla Lucana) variety in the Basilicata region (Southern Italy). Field and laboratory analysis (granulometry, mineralogy, and geochemistry) as well as satellite data (RapidEye) were used to characterize the soil and vegetation patterns. The empirical results indicate a higher biomass production and vegetative potential together with higher grain yields in soils managed with conventional deep tillage compared with soil managed with conservative practices. Similarly, the modern wheat variety exhibited better performance with respect to the old landrace. The soils managed with conventional practices had a distribution of exchangeable macro-nutrients characterized by a reduction in Ca+ and an increase in Mg2+ and K+ between pre-sowing and post-harvesting. Such a distribution was also genotype-dependent, with a higher variability for Saragolla Lucana than Anco Marzio, showing a diverging adsorption of macro-elements between the modern and ancient landrace varieties.

show abstract

Correlation between geochemical, mineralogical and physical characters of sediments and salinization phenomena in a pilot area in the ionian plain (Southern Italy)

Abstract: Tateo (2019) Correlation between geochemical, mineralogical and physical characters of sediments and salinization phenomena in a pilot area in the ionian plain (

Cited by 6 publications

References 15 publications

An Ex-Situ Immobilization Experiment with Zn, Pb, and Cu in Dredged Marine Sediments from Bohai Bay, China

An Ex-Situ Immobilization Experiment with Zn, Pb, and Cu in Dredged Marine Sediments from Bohai Bay, China

The ex-situ immobilization experiment of heavy metals in dredged marine sediments from Bohai Bay, China

Going Conservative or Conventional? Investigating Farm Management Strategies in between Economic and Environmental Sustainability in Southern Italy

Contact Info

Product

Resources

About