Heavy metal contamination status in Greek surface waters: A review with application and evaluation of pollution indices

Karaouzas, Ioannis; Kapetanaki, Natalia; Mentzafou, Angeliki; Kanellopoulos, Theodore D.; Skoulikidis, Nikolaos Th.

doi:10.1016/j.chemosphere.2020.128192

Cited by 199 publications

(67 citation statements)

References 53 publications

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“…Accumulation of heavy metals in different body tissues has the potential to affect vital organs such as kidneys, bones, liver, and to cause serious health hazards [4]. Typical concentrations of heavy metals in water matrices can vary from few µg/L (drinking water [5], surface water [6,7]) to thousands mg/L (industrial wastewater [8,9]). Although attention has been focused on individual removal of heavy metals, heavy metals usually exist together with other type of pollutants in the environment and industrial wastewater.…”

Section: Introductionmentioning

confidence: 99%

Rehabilitation of a complex industrial wastewater containing heavy metals and organic solvents using low cost permeable bio-barriers – From lab-scale to pilot-scale

Silva

Rocha

Lago

et al. 2021

Separation and Purification Technology

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This work addresses the treatment of a complex industrial effluent containing high concentrations of metals and spiked with two organic solvents (diethylketone -DEK, and methyl ethyl ketone -MEK) using an eco-friendly approach. The treatment system herein proposed consists of a bio-barrier that combines the adsorption capacity of sepiolite with the properties of a Streptococcus equisimilis biofilm with proven ability in the degradation and bioremoval of a wide range of pollutants.Results from the open-systems experiments conducted with raw sepiolite exposed to a binary mixture of DEK and MEK revealed the preference of the sorbent towards DEK. The results from the biodegradation experiments also revealed the preference of S. equisimilis to degrade/bioremove DEK over MEK independently of their initial concentration (100 mg/L to 3200 mg/L). Bioremoval percentages higher than 95% were reached for all the concentrations of DEK tested. The lab-scale experiments conducted in open-system with sepiolite and sepiolite covered with biofilm, and the pilot-scale experiment conducted in closed-loop, revealed similar performances on the rehabilitation of an industrial effluent containing heavy metals and additionally spiked with DEK and MEK. Regarding the selectivity towards the different pollutants, Cu was preferentially removed over Cr and Ni, and DEK over MEK. The presence of the biofilm allowed an improvement on the removal of heavy metals, particularly Cr, besides preventing the leaching of Al, Fe, and Mg from the sepiolite structure, an extremely important advantage in comparison to the system without biofilm. EDS analyses performed in sepiolite samples revealed the presence of several metals (Cr, Cu and Ni), proving thus the occurrence of sorption processes by sepiolite and by sepiolite covered by biofilm. The breakthrough data obtained in the open-systems were properly described by the Dose Response and the Yoon and Nelson mathematical models. More research work needs to be performed with complex industrial effluents aiming the optimization of the treatment systems to be applied in real context scenarios.

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Section: Introductionmentioning

confidence: 99%

Rehabilitation of a complex industrial wastewater containing heavy metals and organic solvents using low cost permeable bio-barriers – From lab-scale to pilot-scale

Silva

Rocha

Lago

et al. 2021

Separation and Purification Technology

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“…Normally, for a complete and accurate evaluation of surface water quality several other common water parameters are needed including nutrients, organic matter, heavy metals, etc. [25,35], which, after manual collection of discrete samples on a seasonal basis followed by laboratory analyses, can feed water evaluation studies [36][37][38]. For advancing its real-time monitoring, the HCMR has just purchased three new multiparameter sondes with nitrate sensors to be installed at key sites.…”

Section: Discussionmentioning

confidence: 99%

A New Automatic Monitoring Network of Surface Waters in Greece: Preliminary Data Quality Checks and Visualization

et al. 2021

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The monitoring of surface waters is of fundamental importance for their preservation under good quantitative and qualitative conditions, as it can facilitate the understanding of the actual status of water and indicate suitable management actions. Taking advantage of the experience gained from the coordination of the national water monitoring program in Greece and the available funding from two ongoing infrastructure projects, the Institute of Inland Waters of the Hellenic Centre for Marine Research has developed the first homogeneous real-time network of automatic water monitoring across many Greek rivers. In this paper, its installation and maintenance procedures are presented with emphasis on the data quality checks, based on values range and variability tests, before their online publication and dissemination to end-users. Preliminary analyses revealed that the water pH and dissolved oxygen (DO) sensors and produced data need increased maintenance and quality checks respectively, compared to the more reliably recorded water stage, temperature (T) and electrical conductivity (EC). Moreover, the data dissemination platform and selected data visualization options are demonstrated and the need for both this platform and the monitoring network to be maintained and potentially expanded after the termination of the funding projects is highlighted.

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“…Their occurrence in nature can be detected through metal corrosion, soil erosion, or releasing heavy metals from ore mining (Malik et al 2019). Over the past decades, the presence of heavy metal ions in aqueous media such as groundwater, surface water, and seawater has been alarmingly serious (Lim et al 2018;Liu et al 2019a;Karaouzas et al 2021). For example, Chowdhury et al (2016) reported the co-exposure of a large amount of lead, arsenic, cadmium, copper, etc., in the drinking water from taps and plumbing pipes inside the building.…”

Section: Occurrence Of Heavy Metal Ionsmentioning

confidence: 99%

Invasive plants as biosorbents for environmental remediation: a review

et al. 2022

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Water contamination is an environmental burden for the next generations, calling for advanced methods such as adsorption to remove pollutants. For instance, unwanted biowaste and invasive plants can be converted into biosorbents for environmental remediation. This would partly solve the negative effects of invasive plants, estimated at 120 billion dollars in the USA.Here we review the distribution, impact, and use of invasive plants for water treatment, with emphasis on the preparation of biosorbents and removal of pollutants such as cadmium, lead, copper, zinc, nickel, mercury, chromate, synthetic dyes, and fossil fuels. Those biosorbents can remove 90-99% heavy metals from aqueous solutions. High adsorption capacities of 476.190 mg/g for synthetic dyes and 211 g/g for diesel oils have been observed. We also discuss the regeneration of these biosorbents.

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Heavy metal contamination status in Greek surface waters: A review with application and evaluation of pollution indices

Cited by 199 publications

References 53 publications

Rehabilitation of a complex industrial wastewater containing heavy metals and organic solvents using low cost permeable bio-barriers – From lab-scale to pilot-scale

Rehabilitation of a complex industrial wastewater containing heavy metals and organic solvents using low cost permeable bio-barriers – From lab-scale to pilot-scale

A New Automatic Monitoring Network of Surface Waters in Greece: Preliminary Data Quality Checks and Visualization

Invasive plants as biosorbents for environmental remediation: a review

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