Enhanced simultaneous adsorption of As(<scp>iii</scp>), Cd(<scp>ii</scp>), Pb(<scp>ii</scp>) and Cr(<scp>vi</scp>) ions from aqueous solution using cassava root husk-derived biochar loaded with ZnO nanoparticles

Tho, P.T.; Van, Huu Tap; Nguyen, Lan Huong; Hoang, Trung; Tran, Thi Ngoc; Nguyen, Thi Tuyet Nhung; Nguyen, Thi Bich Hanh; Nguyen, Van Quang; Sy, Hung Le; Thai, Van Nam; Tran, Quoc Ba; Sadeghzadeh, Seyed Mohsen; Asadpour, Robabeh; Thang, Phan Quang

doi:10.1039/d1ra01599k

Cited by 54 publications

(7 citation statements)

References 71 publications

(72 reference statements)

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“…A raw cassava root husk-derived biochar (CRHB) and modified CRHB using ZnO nanoparticles (CRHB-ZnO 3 ) was applied for the simultaneous removal of Cr( vi ), Pb( ii ), Cd( ii ), and As( iii ) ions from competitive aqueous solutions by batch mode. 104 It was found that at pH 6.00–7.00, 60.00 min contact time, and concentration of 80.00 mg L −1 , maximum removal of these heavy metals was achieved. The uptake capacities of these heavy metals by CRHB-ZnO 3 were observed to be in this trend: Pb( ii ) > Cd( ii ) > As( iii ) > Cr( vi ).…”

Section: Competitive Decontamination Of Heavy Metals From Sorption Sy...mentioning

confidence: 99%

Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

2023

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Section: Competitive Decontamination Of Heavy Metals From Sorption Sy...mentioning

confidence: 99%

Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

2023

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“…Biochar (BC) formed by pyrolysis has been used for various applications including pollutant removal (Tan et al, 2015), catalysts (Lee et al, 2017), activators (Yan et al, 2015), carbon sequestration (Windeatt et al, 2014), and electrode materials (Thines et al, 2016). BC has also been incorporated into various nanomaterials as an adsorbent, further widening its versatility (Chen et al, 2019; Hu et al, 2019; Tho et al, 2021). One of the BC's advantages is its ability to adsorb pollutants without the need for light irradiation (Chen et al, 2018; Ma et al, 2014; Yu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Surface characterizations and methylene blue pollutant removal efficiency of ZnO nanorods/biochar hybrids

Chen,

Lu,

Jhang

et al. 2023

Water Environment Research

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In this study, the integration of carbon nanotube (CNT), graphene, and biochar (BC) with zinc oxide nanorods (ZnO NRs) was investigated for efficient water pollutant removal. Two types of ZnO NRs/BC hybrids (BC on top and bottom of ZnO NRs) were synthesized and compared to other carbon material based‐ZnO NRs combinations. Methylene blue (MB) adsorption efficiency was evaluated for various carbon material based‐ZnO NRs composites, revealing good performance in ZnO NRs/BC hybrids, particularly with BC on top. The adsorption efficiency reached an impressive 61.79% for ZnO NRs/BC, surpassing other configurations. MB removal by ZnO NRs/BC fitted well with pseudo‐first‐order kinetics and the rate constants of MB adsorption is 9.19 × 10‐2 1/min (R2 = 0.9237). Surface characterizations revealed a distinctive distribution of BC grains, with denser aggregation observed on top of ZnO NRs. This unique distribution contributed to higher MB adsorption rates, substantiated by Fourier transform infrared spectroscopy (FTIR) analysis that showcased stronger MB adsorption in ZnO NRs/BC hybrids. Notably, the enhanced MB adsorption rates were attributed to the population of BC grains. This research establishes ZnO NRs/BC composites as promising candidates for effective water pollutant removal. The developed materials can be combined with the existed conventional wastewater treatment systems to further purify the water quality.

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“…The highest removal efficiencies of Cd(II) and Pb(II) ions were reported by those authors at a dosage of 1 g, contact duration of 50 min and pH of 6 21 . Similarly, Tho et al 22 . used cassava root husk‐derived biochar to immobilize As(III), Pb(II), Cd(II) and Cr (VI) ions from ZnO nanoparticles, with maximum adsorption capacities of 39.52, 44.27, 42.05 and 28.37 mg g −1 , respectively.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive potential of ZnO/SiO₂ nanorods prepared via the sol–gel method for the removal of Pb(II) and Cd(II) from petroleum refinery wastewater

Shaba

Tijani

Jacob

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND The adsorption technique is considered one of the most effective and economical methods for the removal of heavy metals, due to its excellent advantages of low cost, high efficiency and easy handling. This research looks into the possibility of using ZnO/SiO2 nanorods to remove Cd(II) and Pb(II) from refinery wastewater and their reusability. RESULTS ZnO/SiO2 nanorods were synthesized via the sol–gel method. The analysis of ZnO/SiO2 shows the formation of a rod‐like structure and surface area of 33 m2 g−1 compared with the 0.3 and 8.620 m2 g−1 for ZnO and SiO2, respectively. Effects of adsorption contact time, adsorbent dosage and temperature were examined via batch adsorption. The result indicates that the ZnO/SiO2 rods exhibited higher adsorption removal efficiency of 85.06% and 84.12% for Pb(II) and Cd(II), respectively, compared to Pb(II) (80.00% and 74.25%) and Cd(II) (76.48% and 70.99%) using ZnO and SiO2 nanoparticles. A thermodynamic study indicates that the adsorption process was endothermic. The data from the adsorption isotherm were well fitted to the Langmuir isotherm. The pseudo‐second‐order kinetic model best described the adsorption process. An adsorption–desorption study indicated the adsorption to be concentration‐dependent and maintained up to 80.65% and 76.90% for Pb(II) and Cd(II) after the fourth regeneration cycle. CONCLUSIONS These findings demonstrated that ZnO/SiO2 nanorods are a better nanoadsorbent for the removal of Pb(II) and Cd(II) than ZnO and SiO2 nanoparticles due to their high adsorptive potential and stability. © 2022 Society of Chemical Industry.

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Enhanced simultaneous adsorption of As(iii), Cd(ii), Pb(ii) and Cr(vi) ions from aqueous solution using cassava root husk-derived biochar loaded with ZnO nanoparticles

Abstract: This study presents the modification of cassava root husk-derived biochar (CRHB) with ZnO nanoparticles (ZnO-NPs) for the simultaneous adsorption of As(iii), Cd(ii), Pb(ii) and Cr(vi).

Cited by 54 publications

References 71 publications

Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

Surface characterizations and methylene blue pollutant removal efficiency of ZnO nanorods/biochar hybrids

Adsorptive potential of ZnO/SiO₂ nanorods prepared via the sol–gel method for the removal of Pb(II) and Cd(II) from petroleum refinery wastewater

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Enhanced simultaneous adsorption of As(iii), Cd(ii), Pb(ii) and Cr(vi) ions from aqueous solution using cassava root husk-derived biochar loaded with ZnO nanoparticles

Abstract: This study presents the modification of cassava root husk-derived biochar (CRHB) with ZnO nanoparticles (ZnO-NPs) for the simultaneous adsorption of As(iii), Cd(ii), Pb(ii) and Cr(vi).

Cited by 54 publications

References 71 publications

Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

Surface characterizations and methylene blue pollutant removal efficiency of ZnO nanorods/biochar hybrids

Adsorptive potential of ZnO/SiO2 nanorods prepared via the sol–gel method for the removal of Pb(II) and Cd(II) from petroleum refinery wastewater

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Product

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Adsorptive potential of ZnO/SiO₂ nanorods prepared via the sol–gel method for the removal of Pb(II) and Cd(II) from petroleum refinery wastewater