Role of microalgae in treatment of acid mine drainage and recovery of valuable metals

Samal, Debasish; Sukla, Lala Behari; Pattanaik, Archana; Pradhan, Debabrata

doi:10.1016/j.matpr.2020.02.165

Cited by 32 publications

(19 citation statements)

References 39 publications

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“…Algae can hyperaccumulate metals such as the nonnutrient elements Pb and Cd (Akcali and Kucuksezgin 2011;Diop et al 2016), as well as those with a known nutritional function such as Cu, Zn and Fe (Orandi and Responsible Editor: Philippe Garrigues Lewis 2013; Samal et al 2020). Studies have shown that algae present in streams receiving AMD can be used as a bioindicator and bioremediation to infer high concentrations of metals and have the capacity to remove metals from within the watercourse (Al-Homaidan et al 2011;Bwapwa et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation of metals by algae from acid mine drainage: a case study of Frongoch Mine (UK)

Bogush

Edwards

et al. 2022

Environ Sci Pollut Res

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In Frongoch Mine (UK), it is unclear the distribution of metals on indigenous algae and whether these species of algae can accumulate metals. This study aimed to investigate the role of indigenous algae for metal removal from acid mine drainage and understand if metals can be adsorbed on the surface of algae or/and bioaccumulated in algae. A sequential extraction procedure was applied for algae samples collected from acid mine drainage (AMD) water to identify the forms in which metals are found in algae. Concentrations of Fe, Pb, Zn, Cu and Cd were evaluated in the algae and AMD samples were collected in June and October 2019. AMDs samples had a pH value ranging between 3.5 and 6.9 and high concentrations of Zn (351 mg/L) and Pb (4.22 mg/L) that exceeded the water quality standards (Water Framework Directive, 2015). Algae Ulothrix sp. and Oedogonium sp. were the two main species in the Frongoch AMDs. The concentrations of metals in algae ranged from 0.007 to 51 mg/g, and the bioconcentration factor of metals decreased in the following order: Fe > > Pb > > Cu > Cd > Zn. It was found that Zn, Cu and Cd were adsorbed onto the surface of and bioaccumulated in the algae, while Pb and Fe were mainly bioaccumulated in the algae. Indigenous algae can be considered as a biogeochemical barrier where metals are accumulating and can be used in bioremediation methods. Also, indigenous algae could be used as a bioindicator to assess water pollution at Frongoch Mine and other similar metal mines.

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Section: Introductionmentioning

confidence: 99%

Bioaccumulation of metals by algae from acid mine drainage: a case study of Frongoch Mine (UK)

Bogush

Edwards

et al. 2022

Environ Sci Pollut Res

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“…2020a; Samal et al . 2020). Several published reports suggested that microalgae can remediate heavy metals (Samal et al .…”

Section: Evaluation Of Various Microalgae Potential In Heavy Metals R...mentioning

confidence: 99%

Bioremediation of heavy metals from wastewater: a current perspective on microalgae-based future

Goswami

Agrawal

Shah³

et al. 2022

Letters in Applied Microbiology

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Heavy metals‐containing drinking water and wastewater are posing a severe threat to the environment, and living beings on land, air and water. Different conventional, advanced nanomaterials‐based and biological method has been employed for the treatment of heavy metals. Among the biological methods, microalgae are an important group of micro‐organisms that have numerous environmental applications and can remediate heavy metals from wastewater. Also, it has numerous advantages over conventional remediation processes. Microalgae cells can uptake the heavy metal via different physiological and biological methods and are utilized as a nutrient source to regulate its metabolic process for the production of biomass. Furthermore, the enhancement in heavy metal removal efficiency can be improved using different strategies such as immobilization of algal cells, development of algal consortia and designing of microalgae‐based nanocomposite materials. Also, it can significantly contribute towards environmental sustainability and future. Thus, the review provides a critical overview of heavy metals and their existence along with their negative effects on humans. This review provides insight on recent advanced nanomaterial approaches for the removal of heavy metals, overviews of microalgae‐based heavy metal uptake mechanisms and their potential for the amputation of different heavy metals. Furthermore, the special focus is on recent strategies that enhance heavy metal removal efficiency and contribute towards sustainability for the development of a microalgae‐based future.

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“…Pyrite oxidation is the main cause of acidic drainage [40,42,43,[60][61][62]. Other sulphides present also react and form new minerals, but only those containing Fe (II) contribute to the formation of AMD (Figure 7) [66,[73][74][75][76]. Pyrite oxidation is the main cause of acidic drainage [40,42,43,[60][61][62].…”

Section: Water Dispersionmentioning

confidence: 99%

Do Old Mining Areas Represent an Environmental Problem and Health Risk? A Critical Discussion through a Particular Case

2021

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A bibliographic review was carried out to establish the state of knowledge of a mining area with several centuries of exploitation and currently abandoned. The selected case study, the Sierra Minera de Cartagena-La Union (Spain), has a long history of mining activity, ending in 1990. The area is rich in metallic sulphide (lead, zinc and iron), with underground mines and quarries. The zone is very close to important populations and affects protected sites of special ecological value. It is also adjacent to areas dedicated to agriculture and important centres of tourist interest. It is a territory that meets the requirements to be classified as a critical area, as it is in a state of unstable physical and geochemical equilibrium, giving rise to possible risks to human health and ecosystems. A literature review was carried out according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) methodology criteria, consulting a large number of related publications. The results obtained using the Source-Pathway-Receptor model make it possible to identify the main impacts caused by the contamination sources, the main routes of contamination, as well as the transfer to the biota and the influence on adjacent agricultural soils. In this study, lead, cadmium, zinc, arsenic, copper and manganese were considered as potential toxic elements (PTEs), and data were obtained on concentrations in soil, water and air as well as in fauna and flora. Finally, once the receptors and the associated risks to the ecosystem and human health were identified, a conceptual model of the contamination was drawn up to consider a management proposal to tackle the problems associated with this area, which would also be applicable to critical mining zones.

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Role of microalgae in treatment of acid mine drainage and recovery of valuable metals

Cited by 32 publications

References 39 publications

Bioaccumulation of metals by algae from acid mine drainage: a case study of Frongoch Mine (UK)

Bioaccumulation of metals by algae from acid mine drainage: a case study of Frongoch Mine (UK)

Bioremediation of heavy metals from wastewater: a current perspective on microalgae-based future

Do Old Mining Areas Represent an Environmental Problem and Health Risk? A Critical Discussion through a Particular Case

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