Reclamation of river dredged sediments polluted by PAHs by co-composting with green waste

Mattei, Paola; Cincinelli, Alessandra; Martellini, Tania; Natalini, R.; Pascale, Erica; Renella, Giancarlo

doi:10.1016/j.scitotenv.2016.05.140

Cited by 64 publications

(29 citation statements)

References 37 publications

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“…The addition of surfactants to soil can increase the bioavailability of some organic pollutants (Cheng et al, 2008). Co-composting of PAH polluted sediments with green waste in different proportions for nine months has resulted in a decrease of PAH concentrations to < 1 mg g À1 (Mattei et al, 2016). The co-composted product is considered to have the potential for use as technosol or plant growth substrate in revegetation of urban areas or brownfields.…”

Section: Compostingmentioning

confidence: 99%

Soil and brownfield bioremediation

Megharaj

Naidu

2017

Microbial Biotechnology

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SummarySoil contamination with petroleum hydrocarbons, persistent organic pollutants, halogenated organic chemicals and toxic metal(loid)s is a serious global problem affecting the human and ecological health. Over the past half‐century, the technological and industrial advancements have led to the creation of a large number of brownfields, most of these located in the centre of dense cities all over the world. Restoring these sites and regeneration of urban areas in a sustainable way for beneficial uses is a key priority for all industrialized nations. Bioremediation is considered a safe economical, efficient and sustainable technology for restoring the contaminated sites. This brief review presents an overview of bioremediation technologies in the context of sustainability, their applications and limitations in the reclamation of contaminated sites with an emphasis on brownfields. Also, the use of integrated approaches using the combination of chemical oxidation and bioremediation for persistent organic pollutants is discussed.

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Section: Compostingmentioning

confidence: 99%

Soil and brownfield bioremediation

Megharaj

Naidu

2017

Microbial Biotechnology

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“…Physical and chemical decontamination technologies (e.g. thermal treatment, physical fractionation, solvent extraction) are potentially available, but high economic and energetic costs prevent their application . Conversely, phytoremediation has been proposed as an ecologically and economically sustainable management option for reclaiming dredged sediments …”

Section: Introductionmentioning

confidence: 99%

“…thermal treatment, physical fractionation, solvent extraction) are potentially available, but high economic and energetic costs prevent their application. 2 Conversely, phytoremediation has been proposed as an ecologically and economically sustainable management option for reclaiming dredged sediments. 3 Phytoremediation leads to degradation of organic pollutants and chemical stabilization of heavy metals, improves structure and water retention and increases the microbiological activity, converting the dredged sediments into a biologically active matrix.…”

Section: Introductionmentioning

confidence: 99%

Remediated marine sediment as growing medium for lettuce production: assessment of agronomic performance and food safety in a pilot experiment

et al. 2019

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BACKGROUND The use of reclaimed dredged sediments as growing media may offer a profitable alternative to their disposal as a waste and at the same time meets the need of peat‐substitute substrates in horticulture. When sediments are reused to cultivate food crops, issues related to human health rise due to potential accumulation of contaminants in the product. This pilot study aimed at verifying the suitability of a reclaimed dredged port sediment, used pure or mixed with peat, as a growing medium for lettuce cultivation. RESULTS The pure sediment caused a reduction in crop yield, probably due to its unsuitable physical properties, whereas the mixture sediment–peat and pure peat resulted in the same yield. Although the sediment contained potentially phytotoxic heavy metals and some organic pollutants, no symptoms of plant toxicity were noted. Besides, no organic contaminants were detected in lettuce heads, and heavy metals amounts were not hazardous for consumers. Conversely, plants grown in the sediment were particularly rich in minerals like Ca, Mg and Fe, and showed higher concentrations of organic acids and antioxidants. CONCLUSION The use of the sediment as a growing medium for lettuce was shown to be safe for both inorganic and organic contaminants. Nevertheless, considering crop yield results, the mixture of the sediment with other materials is recommended in order to produce a substrate with more suitable physicochemical properties for vegetable cultivation. © 2019 Society of Chemical Industry

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“…Studies about their reuse in agriculture are still limited, and mostly relate to sediments that are dredged from reservoirs with contamination from agricultural waste and sewage (Fonseca et al, 1998;Canet et al, 2003;Walter et al, 2012). However, studies on sediments dredged from ports have demonstrated that decontamination techniques like phytoremediation and cocomposting can be successful for creating substrates for plant growth (Doni et al, 2013;Mattei et al, 2016Mattei et al, , 2017. Mattei et al (2017) propose decontaminated sediments as constituents of peat-free substrates for growing ornamental plants.…”

Section: Introductionmentioning

confidence: 99%