Bioremediation potential of Sargassum sp. biomass to tackle pollution in coastal ecosystems: Circular economy approach

Saldarriaga-Hernández, Sara; Hernández-Vargas, Gustavo; Iqbal, Hafiz M.N.; Barceló, Damià; Parra‐Saldívar, Roberto

doi:10.1016/j.scitotenv.2020.136978

Cited by 85 publications

(43 citation statements)

References 101 publications

(102 reference statements)

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“…First, the change in zone I is from the O-H symmetric stretching band, which is augmented and slightly sharper. This is because of the interaction between the CT-Sspp and lead (II), in which chelation is now the main process [40]. This is confirmed when zone II to zone V are analyzed: the interactions from diverse carbonyl vibration modes are being affected by chelation.…”

Section: Removal Of Methyl Orange and Methyl Redmentioning

confidence: 77%

Evaluation of a Dynamic Bioremediation System for the Removal of Metal Ions and Toxic Dyes Using Sargassum Spp.

López-Miranda

Silva

Molina

et al. 2020

JMSE

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This work presents the results obtained in the design and manufacture of a simple, economic and ecological filter based on Sargassum spp. (Sspp), consisting of the species S. natans and S. fluitans, for the elimination of organic and inorganic toxic substances. The main objective is to make use of Sspp, as the massive amounts of this alga arriving at the Mexican Caribbean coast have caused serious problems over recent years. The toxic substances treated were organic dyes (methyl blue, methyl orange and methyl red) and the metal ion, lead (II). To obtain optimal removal conditions, grinding of the Sspp used, its mass and humidity were evaluated. In the design of the filter the area, flow rate and the number of layers were evaluated. Removal rates of almost 100%, 65% and 25% were obtained for methylene blue, methyl red and methyl orange respectively, and in the case of lead (II), values up to 95% were obtained. After the tests, the Sspp was characterized, using Fourier Transform Infrared (FTIR) spectroscopy and scanning electron microscopy, showing the presence of the dyes and the ionic species. These results demonstrate the efficiency of the dynamic Sspp-based filtration system proposed, which can be industrially scaled for the treatment of water contaminated with these kinds of substances.

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Section: Removal Of Methyl Orange and Methyl Redmentioning

confidence: 77%

Evaluation of a Dynamic Bioremediation System for the Removal of Metal Ions and Toxic Dyes Using Sargassum Spp.

López-Miranda

Silva

Molina

et al. 2020

JMSE

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“…The Sargassum spp. is a brown seaweed distributed around the world's tropical oceans [11]. Due to its arrival in abundance to the Caribbean coast in recent years, its suitable treatment has been investigated.…”

Section: Sargassum Characterizationmentioning

confidence: 99%

“…It is estimated that along the Mexican Caribbean coast alone, 78 species are affected, which are mainly fish with demersal neritic habitats and other fauna like sea cucumbers, crabs and octopus, given the hypoxic conditions, high concentrations of hydrogen sulphide and ammonium, leading to a deterioration in the water quality [7]. Furthermore, navigation is limited as the sargassum attaches to the rotary blades of boats and fishing vessels causing damage to motors [11].…”

Section: Introductionmentioning

confidence: 99%

Practical and Theoretical Modeling of Anaerobic Digestion of <i>Sargassum</i> spp. in the Mexican Caribbean

López-Aguilar¹,

Kennedy-Puentes²,

Gómez³

et al. 2021

Pol. J. Environ. Stud.

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The amount of sargassum seaweed washed ashore on the beaches of Africa, Brazil, Central America and the Caribbean has increased to the point where it has become a social, environmental and financial issue. This research evaluates the potential for Sargassum spp. of the Mexican Caribbean coast to be used in the production of biomethane by estimating: a) stoichiometric methane production (SMP), b) biochemical methane potential (BMP) and c) biodegradability index (BI).The use of a sigmoidal model generalized to substrate to inoculum ratios is proposed, to predict the biomethane production during the anaerobic digestion (AD) of the sargassum. The information obtained shows the seaweed's potential for biomethane production and will be useful for estimates and scaling when implementing energy harnessing systems for sargassum in the Caribbean. The use of biomass is a key element in the move towards a circular economy. It is hoped that the use of technologies like AD leads to the integration of this seaweed into an economic value chain, thereby reducing the adverse effects of its presence on the ecosystem.

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“…Industrial effluents are mainly composed by environmental relevance metals (ERM) among others metalloids and organic contaminants that inflicted serious damage on ecosystems [3,4].Environmental relevance metals' pollution is a serious concern due to the negative impact at even very small concentrations [5]. It is a direct consequence of processes as tannery [6], electroplating [7], dyeing or mining [8], and also of agriculture, sewage sludge [9] or waste treatment plants [10]. Certain industrial activities such as electroplating, mining, and metal-processing operations have been increasing in the last decades according to the improvement needs of specific characteristics in metallic products, such as oxidation resistance, conductivity, hardness, brightness, thermal and mechanical resistance among others.…”

Section: Introductionmentioning

confidence: 99%

“…Since there is a growing awareness of the persistence in nature, the ability to be incorporated and the ERM harmful effects on biodiversity, then a special interest to develop innovative technologies to remediate polluted environments is increasing. Several conventional techniques have been applied to remove ERM from wastewater [9]. Most of them are chemical and physical methods such as adsorption with activated carbon, oxidation, ion exchange, membrane filtration and chemical precipitation; but these practices can be expensive, energy costly, and need time and constant maintenance [17].…”

Section: Introductionmentioning

confidence: 99%

Copper Removal Mediated by Pseudomonas veronii 2E in Batch and Continuous Reactors

Busnelli¹,

Vullo²

2022

J. sustain. dev. energy water environ. syst.

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Non treated Copper-loaded effluents disposed in water-bodies can cause severe damage in biota, so its removal before discharge is required. The aim of this work was to study the interaction of free and immobilised Pseudomonas veronii 2E with Copper, together with the design of biotreatment systems. Free cell sorption kinetics showed a 24 hmaximal retention of 0.330 mmol/g biomass, from 1 mM copper at 32 °C. Sorption isotherms revealed a specific maximal retention capacity 0.523 mmol/g. Optimal sorption achieved with biomass immobilised on vegetable sponge was 71.4% at 24 h. A reactor with recirculation and 3 continuous reactors in series were designed, obtaining final sorption of 78.3 and 56.0% at 9 and 1 days respectively. Copper desorption using hydrochloric acid was evaluated in both reactors. This work presents alternatives of applicable biotreatments of copper-loaded effluents, characterized by a combination of metal removal and recovery with low cost.

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Bioremediation potential of Sargassum sp. biomass to tackle pollution in coastal ecosystems: Circular economy approach

Cited by 85 publications

References 101 publications

Evaluation of a Dynamic Bioremediation System for the Removal of Metal Ions and Toxic Dyes Using Sargassum Spp.

Evaluation of a Dynamic Bioremediation System for the Removal of Metal Ions and Toxic Dyes Using Sargassum Spp.

Practical and Theoretical Modeling of Anaerobic Digestion of <i>Sargassum</i> spp. in the Mexican Caribbean

Copper Removal Mediated by Pseudomonas veronii 2E in Batch and Continuous Reactors

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