Phycoremediation: Algae as Eco-friendly Tools for the Removal of Heavy Metals from Wastewaters

Ahmad, Shamshad; Pandey, A.K.; Pathak, Vinayak V.; Tyagi, V.V.; Kothari, Richa

doi:10.1007/978-981-13-3426-9_3

Cited by 62 publications

(29 citation statements)

References 84 publications

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“…Phycoremediation has been used in wastewater treatment for the last 60 years, with one of the first descriptions of its application being reported by Oswald and Gotaas (1957). The process utilises the natural ability of algae to uptake and assimilate the nutrients, accumulate toxic metals, and degrade organic contaminants via symbiotic interaction with aerobic bacteria (Ahmad et al 2020). It has a low environmental impact due to the suitability of the biomass byproduct for biofuel which allows efficient nutrient recycling (Olguín 2003;Faruque et al 2021).…”

Section: Phycoremediation Of Pomementioning

confidence: 99%

“…Effective treatment of wastewater by this method requires conditions that allow microalgae to thrive; therefore, it is imperative to understand what these factors are (Mata et al 2010;Kamarudin et al 2015). Here, the most important of those factors which affect algal growth, and which may influence interactions between the biomass and anionic components during POME remediation are considered (Ahmad et al 2020).…”

Section: Factors Affecting the Effectiveness Of Phycoremediationmentioning

confidence: 99%

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Advances in POME treatment methods: potentials of phycoremediation, with a focus on South East Asia

Tan

Maznah

Morad

et al. 2021

Int. J. Environ. Sci. Technol.

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The discharge of palm oil mill effluent (POME) without effective treatment is highly toxic to the environment and receiving waters due to its high chemical oxygen demand , biochemical oxygen demand and increased levels of suspended solids. The ponding system is regarded as a conventional method for the treatment of POME but requires long retention time and extensive treatment areas. Other processes, such as physicochemical treatment, have also been applied as tertiary steps to ensure lower toxicity of the POME discharge. More recently, phycoremediation, a new biological treatment method using microalgae, has been reported as having great potential in being a highly efficient method of reducing the environmental impact of POME. This paper discusses the feasibility of the above treatment methods of POME, including the potential of phycoremediation, with a focus on their application in South East Asia.

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Section: Phycoremediation Of Pomementioning

confidence: 99%

Section: Factors Affecting the Effectiveness Of Phycoremediationmentioning

confidence: 99%

Advances in POME treatment methods: potentials of phycoremediation, with a focus on South East Asia

Tan

Maznah

Morad

et al. 2021

Int. J. Environ. Sci. Technol.

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“…Other microalgae such as Chlorella sp., Scenedesmus sp., Spirogyra sp., and Spirulina sp. have also proven to be suitable candidates to perform remediation of heavy metal contaminated water (Ahmad, Pandey, Pathak, Tyagi, & Kothari, 2020; Zeraatkar et al, 2016).…”

Section: Bioremediationmentioning

confidence: 99%

Molecular tools and applications of Euglena gracilis: From biorefineries to bioremediation

Khatiwada

Sunna

Nevalainen

2020

Biotech & Bioengineering

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Euglena gracilis is a promising source of commercially important metabolites such as vitamins, wax esters, paramylon, and amino acids. However, the molecular tools available to create improved Euglena strains are limited compared to other microorganisms that are currently exploited in the biotechnology industry. The complex How to cite this article: Khatiwada B, Sunna A, Nevalainen H. Molecular tools and applications of Euglena gracilis: From biorefineries to bioremediation. Biotechnology and Bioengineering.

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“…Consequently, it is a plant highly resistant to insolation, drought, temperature variability [ 9 ]. Algae-based remediation (phycoremediation) techniques exploit the natural ability of cyanobacteria, macro- and microalgae to remove organic/inorganic pollutants (such as nutrients and metals) from wastewater [ 10 , 11 ] when present at concentrations between 1 and 100 mg L −1 , where conventional methods are insufficient [ 12 , 13 ]. The idea of using microalgae to treat wastewater was introduced in 1957 by Oswald and Gotaas [ 14 ], and since then numerous studies have underlined how efficient microalgae remediate highly polluted waters and how they can be incorporated into traditional wastewater treatment processes [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Exploiting the Potential in Water Cleanup from Metals and Nutrients of Desmodesmus sp. and Ampelodesmos mauritanicus

Braglia

Rugnini

Malizia

et al. 2021

Plants

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Increasing levels of freshwater contaminants, mainly due to anthropogenic activities, have resulted in a great deal of interest in finding new eco-friendly, cost-effective and efficient methods for remediating polluted waters. The aim of this work was to assess the feasibility of using a green microalga Desmodesmus sp., a cyanobacterium Nostoc sp. and a hemicryptophyte Ampelodesmos mauritanicus to bioremediate a water polluted with an excess of nutrients (nitrogen and phosphorus) and heavy metals (copper and nickel). We immediately determined that Nostoc sp. was sensitive to metal toxicity, and thus Desmodesmus sp. was chosen for sequential tests with A. mauritanicus. First, A. mauritanicus plants were grown in the ‘polluted’ culture medium for seven days and were, then, substituted by Desmodesmus sp. for a further seven days (14 days in total). Heavy metals were shown to negatively affect both the growth rates and nutrient removal capacity. The sequential approach resulted in high metal removal rates in the single metal solutions up to 74% for Cu and 85% for Ni, while, in the bi-metal solutions, the removal rates were lower and showed a bias for Cu uptake. Single species controls showed better outcomes; however, further studies are necessary to investigate the behavior of new species.

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Phycoremediation: Algae as Eco-friendly Tools for the Removal of Heavy Metals from Wastewaters

Cited by 62 publications

References 84 publications

Advances in POME treatment methods: potentials of phycoremediation, with a focus on South East Asia

Advances in POME treatment methods: potentials of phycoremediation, with a focus on South East Asia

Molecular tools and applications of Euglena gracilis: From biorefineries to bioremediation

Exploiting the Potential in Water Cleanup from Metals and Nutrients of Desmodesmus sp. and Ampelodesmos mauritanicus

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