A bioassimilation and bioaccumulation model for the removal of heavy metals from wastewater using algae: New strategy

ketife, Ahmed M.D. Al; Momani, Fares Al; Judd, Simon

doi:10.1016/j.psep.2020.07.018

Cited by 37 publications

(7 citation statements)

References 89 publications

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“…Water contamination with heavy metals is considered a global issue and caused great concern worldwide [7]. Toxic metal ions can be introduced to the water body from different industrial effluents such as metal plating facilities, mining operations, fertilizer industries, tanneries, batteries, paper industries, and pesticides.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore it has become imperative to develop a treatment process for the removal of such wastes. Different studies have reported that heavy metals such as lead, zinc, cadmium, chromium, and copper are very toxic elements [2,4,7,8]. Drinking water containing copper exceeding the permissible limit for a long period leads to irreversible kidney or liver damage as well as headaches, hair loss, and increased heart rate, and in some cases might cause brain dysfunction, depression, and schizophrenia [19,61].…”

Section: Introductionmentioning

confidence: 99%

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Removal of copper ions from aqueous solution using NaOH-treated rice husk

et al. 2020

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The present study investigates the removal of copper ions (Cu (II)) from aqueous solution using chemically treated rice husk (TRH). The chemical treatment was carried out using NaOH solution and the effect of contact time (tc), adsorbent dosage (Dad), initial Cu (II) concentration ([Cu]i), and temperature (T) on the percentage removals of Cu (II) (%RCu) were investigated. Different analytical techniques (FTIR, SEM, and EDX) were used to confirm the adsorption (ads) of Cu (II) onto the TRH. The ads kinetics was tested against pseudo-first-order (PFO) and pseudo-second-order (PSO) models as well as Langmuir and Freundlich isotherms. Treating RH with NaOH altered the surface and functional groups, and on the surface of RH, the ionic ligands with high electro-attraction to Cu increased and thus improved the removal efficiency. The %RCu decreased by increasing the [Cu]i and increased by increasing the ct, Dad, and T. Up to 97% Cu removal was achieved in ct of 30 min using Dad of 0.3 g [Cu]i of 25 mg L−1 and T = 280 K. The ads of Cu on TRH is endothermic, spontaneous, follows Langmuir isotherms, and exhibited a PSO kinetics. Moreover, the TRH was successfully regenerated and used for further adsorption cycles using 1 M HNO3.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Removal of copper ions from aqueous solution using NaOH-treated rice husk

et al. 2020

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“…Industrial effluents contain heavy metals and their discharge into the environment affects soil fertility and causes harmful impacts in the nearby aquatic ecosystem. Furthermore, several reports suggested that by consumption of heavy metal-based water can cause kidney failure, damage the nervous system and initiate cancer cell growth in humans or animals (Al Ketife et al 2020). The microalgae can bioaccumulate and assimilate heavy metals.…”

Section: Heavy Metal Antibiotics and Micropollutants Removal From Industrial Wastewatermentioning

confidence: 99%

“…It contains various heavy metals binding ligands in their cell wall (e.g., metallothioneins and phytochelatins) which are responsible for the bioaccumulation and bio-assimilation of heavy metals. They bioaccumulate the heavy metals and use them for their metabolic regulation (Al Ketife et al 2020). Several studies suggest that Tetraselmis sp.…”

Section: Heavy Metal Antibiotics and Micropollutants Removal From Industrial Wastewatermentioning

confidence: 99%

Current perspective on wastewater treatment using photobioreactor for Tetraselmis sp.: an emerging and foreseeable sustainable approach

Goswami

Agrawal

Mehariya

et al. 2021

Environ Sci Pollut Res

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Urbanization is a revolutionary and necessary step for the development of nations. However, with development emanates its drawback i.e., generation of a huge amount of wastewater. The existence of diverse types of nutrient loads and toxic compounds in wastewater can reduce the pristine nature of the ecosystem and adversely affects human and animal health. The conventional treatment system reduces most of the chemical contaminants but their removal efficiency is low. Thus, microalgae-based biological wastewater treatment is a sustainable approach for the removal of nutrient loads from wastewater. Among various microalgae, Tetraselmis sp. is a robust strain that can remediate industrial, municipal, and animal-based wastewater and reduce significant amounts of nutrient loads and heavy metals. The produced biomass contains lipids, carbohydrates, and pigments. Among them, carbohydrates and lipids can be used as feedstock for the production of bioenergy products. Moreover, the usage of a photobioreactor (PBR) system improves biomass production and nutrient removal efficiency. Thus, the present review comprehensively discusses the latest studies on Tetraselmis sp. based wastewater treatment processes, focusing on the use of different bioreactor systems to improve pollutant removal efficiency. Moreover, the applications of Tetraselmis sp. biomass, advancement and research gap such as immobilized and co-cultivation have also been discussed. Furthermore, an insight into the harvesting of Tetraselmis biomass, effects of physiological, and nutritional parameters for their growth has also been provided. Thus, the present review will broaden the outlook and help to develop a sustainable and feasible approach for the restoration of the environment.

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“…The toxicity of HM in water in emerging countries, such as China, India, Bangladesh, Ethiopia, Pakistan, and other developing countries, has been extensively studied by many scholars [13][14][15][16][17][18][19]. To make matters worse, because of the well-documented harm that HMs inflict on human health, a great deal of study has been done on ways to remove HMs from water, such as waste water from municipalities or industry.…”

Section: Introductionmentioning

confidence: 99%

Detection and Prediction of HMS from Drinking Water by Analysing the Adsorbents from Residuals Using Deep Learning

Suman¹,

Arivazhagan

Bhagyalakshmi³

et al. 2022

Adsorption Science & Technology

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Contamination HM is an important issue associated with the environment, and it requires suitable steps for the reduction of HMs in water at an acceptable ratio. With modern technologies, this could be possible by enabling the carbon adsorbents to adsorb the pollutions via deep learning strategies. In this paper, we develop a model on detection and prediction of presence of HMs from drinking water by analysing the adsorbents from residuals using deep learning. The study uses dense neural networks or DenseNets to analyse the microscopic images of the residual adsorbents. The study initially preprocesses and extracts features using standardised procedure. The DenseNets are used finally for detection purpose, and it is trained and tested with standard set of microscopic images. The experimental results are conducted to test the efficacy of the deep learning model on detecting the HM composition. The results of simulation show that the proposed deep learning model achieves 95% higher rate of detecting the HM composition from the adsorption residuals than other methods.

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A bioassimilation and bioaccumulation model for the removal of heavy metals from wastewater using algae: New strategy

Cited by 37 publications

References 89 publications

Removal of copper ions from aqueous solution using NaOH-treated rice husk

Removal of copper ions from aqueous solution using NaOH-treated rice husk

Current perspective on wastewater treatment using photobioreactor for Tetraselmis sp.: an emerging and foreseeable sustainable approach

Detection and Prediction of HMS from Drinking Water by Analysing the Adsorbents from Residuals Using Deep Learning

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