A high-efficiency Fe2O3@Microalgae composite for heavy metal removal from aqueous solution

Shen, Li; Wang, Junjun; Li, Zhanfei; Fan, Ling; Chen, Ran; Wu, Xueling; Li, Jiaokun; Zeng, Weimin

doi:10.1016/j.jwpe.2019.101026

Cited by 79 publications

(18 citation statements)

References 72 publications

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“…In the past decade, most research on this topic has attempted to identify effective and readily available dead biomasses or biosorbents for eliminating heavy metals 13 – 16 . Typically, these biosorbents include algae, fungi, yeast, bacteria, and agricultural waste 13 , 15 – 18 . Surprisingly, there are only few studies available in the literature dealing with heavy metals removal using microalgae, which grows very rapidly and can act as a bisorbent for heavy metals.…”

Section: Introductionmentioning

confidence: 99%

Experimental study and parameters optimization of microalgae based heavy metals removal process using a hybrid response surface methodology-crow search algorithm

Sultana

Hossain

Mohammed

et al. 2020

Sci Rep

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This study investigates the use of microalgae as a biosorbent to eliminate heavy metals ions from wastewater. The Chlorella kessleri microalgae species was employed to biosorb heavy metals from synthetic wastewater specimens. FTIR, and SEM/XRD analyses were utilized to characterize the microalgal biomass (the adsorbent). The experiments were conducted with several process parameters, including initial solution pH, temperature, and microalgae biomass dose. In order to secure the best experimental conditions, the optimum parameters were estimated using an integrated response surface methodology (RSM), desirability function (DF), and crow search algorithm (CSA) modeling approach. A maximum lead(II) removal efficiency of 99.54% was identified by the RSM–DF platform with the following optimal set of parameters: pH of 6.34, temperature of 27.71 °C, and biomass dosage of 1.5 g L−1. The hybrid RSM–CSA approach provided a globally optimal solution that was similar to the results obtained by the RSM–DF approach. The consistency of the model-predicted optimum conditions was confirmed by conducting experiments under those conditions. It was found that the experimental removal efficiency (97.1%) under optimum conditions was very close (less than a 5% error) to the model-predicted value. The lead(II) biosorption process was better demonstrated by the pseudo-second order kinetic model. Finally, simultaneous removal of metals from wastewater samples containing a mixture of multiple heavy metals was investigated. The removal efficiency of each heavy metal was found to be in the following order: Pb(II) > Co(II) > Cu(II) > Cd(II) > Cr(II).

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Section: Introductionmentioning

confidence: 99%

Experimental study and parameters optimization of microalgae based heavy metals removal process using a hybrid response surface methodology-crow search algorithm

Sultana

Hossain

Mohammed

et al. 2020

Sci Rep

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“…Shen et al . (2020) evaluated the potential of Fe 2 O 3 with microalgae to remove Cr(VI), Pb(II) Cd(II) and Cu(II). The result showed that microalgae combined with Fe 2 O 3 showed the highest removal efficiency compared to commercial Fe 2 O 3 and individual microalgae cells.…”

Section: Recent Advanced Strategies In Microalgal‐based Heavy Metal R...mentioning

confidence: 99%

“…This report suggested that the immobilization of microalgae enhanced the recovery efficiency of heavy metals. Furthermore, Shen et al (2020) suggested that microalgae can use a bioreactor system to immobilize and recycle Cd ions. It is reported that a combination of metal oxide such as Fe 2 O 3 also attains the purpose of immobilization ions and helps to remove heavy metal with a higher efficiency rate.…”

Section: Recent Advanced Strategies In Microalgal-based Heavy Metal R...mentioning

confidence: 99%

“…It is reported that a combination of metal oxide such as Fe 2 O 3 also attains the purpose of immobilization ions and helps to remove heavy metal with a higher efficiency rate. Shen et al (2020) evaluated the potential of Fe 2 O 3 with microalgae to remove Cr(VI), Pb(II) Cd(II) and Cu(II). The result showed that microalgae combined with Fe 2 O 3 showed the highest removal efficiency compared to commercial Fe 2 O 3 and individual microalgae cells.…”

Section: Recent Advanced Strategies In Microalgal-based Heavy Metal R...mentioning

confidence: 99%

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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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“…In recent years, biotechnology-based immobilized microalgae culture has been widely developed. Microalgae attached to the surface and various carriers are widely used to produce biomass and metabolites and to remove excess nutrients and soluble heavy metal ions from wastewater (Politaeva et al 2020, Shen et al 2020. Compared with cell suspension, immobilized microalgae have the advantages of simplifying the biomass harvesting process and enhancing the cell resistance to adverse factors (e.g., temperature, acidity, and toxic compounds).…”

Section: Introductionmentioning

confidence: 99%

Adsorption characteristics of Cr6+ on microalgae immobilized by different carriers

Chen

Wang

Fan

et al. 2021

Preprint

Self Cite

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To solve the problem of harvesting microalgae during heavy metal adsorption, six different carriers were selected in this study to compare the adsorption behavior of microalgae after immobilization. The optimal immobilized carrier-chitosan was obtained under the following conditions of chitosan: acetic acid (2:40), microalgae concentration (10 8 cells/mL), and immobilization time (18 h). The optimal adsorption conditions were as follows: temperature: 30°C, pH: 5.0, adsorption dose: 1.5 g/L, initial ion concentration: 40 mg/L. Fourier transform infrared spectroscopy analysis showed that the specific functional groups of the specific microalgae played an important role in the adsorption process. The kinetic and isothermal model data showed that the adsorption process was mainly chemical adsorption and homogeneous monolayer adsorption. Moreover, X-ray photoelectron spectroscopy analysis showed that the Cr adsorption process involves the reduction of Cr(VI) to Cr(III).

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A high-efficiency Fe2O3@Microalgae composite for heavy metal removal from aqueous solution

Cited by 79 publications

References 72 publications

Experimental study and parameters optimization of microalgae based heavy metals removal process using a hybrid response surface methodology-crow search algorithm

Experimental study and parameters optimization of microalgae based heavy metals removal process using a hybrid response surface methodology-crow search algorithm

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

Adsorption characteristics of Cr6+ on microalgae immobilized by different carriers

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