Diethylamine functionalised <i>Moringa oleifera</i> leaves for the removal of chromium(VI) and bacteria from wastewater

Masekela, Daniel; Hintsho‐Mbita, Nomso C.; Mabuba, Nonhlangabezo

doi:10.1080/03067319.2020.1762873

Cited by 9 publications

(2 citation statements)

References 59 publications

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“…Further there is no significant effect on lead ion removal on increasing time up to 70min. At that time, equilibrium is attained and active sites get saturated [14][15][16].…”

Section: Influence Of Contact Timementioning

confidence: 99%

Terminalia arjuna Bark Biosorbent for Efficient Lead (II) Removal from Synthetic Wastewater

Kumari,

Singh,

Sangwan

et al. 2024

J. Sci. Res. Rep.

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Aim: Heavy metal such as lead ions is toxic and its entry in water environment is a threat to human as well as aquatic life. Plant based adsorbents have attracted a great attention as ecofriendly and low-cost adsorbent. The goal of this study was to prepare adsorbent from Terminalia arjuna bark using chemicals named hydrochloride followed by sodium hydroxide for lead ions removal. Study Design: The research is experimental in nature. Place and Duration of Study: This research was conducted in Department of Chemistry and Biochemistry at CCSHAU, Hisar in year 2022-23. Methodology: The functionality, surface morphology, and elemental analysis of that biosorbent was analysed by FTIR, FE-SEM with EDX respectively. The bark samples were treated with 400 mL of 0.1 M hydrochloride and 400 mL of 0.01 M sodium hydroxide, respectively, before being used as an adsorbent. Batch studies were done for biosorption of heavy metal ions. The maximum biosorption capacity of lead ions were optimized by varying the pH (2-8), lead ions concentration (10- 100 mg/L), biosorbent dose (0.01-0.04 g/50mL), and contact time (10–60 minutes). Results: The maximum removal efficiency of about 71% was obtained at 6 pH having 0.03g of biosorbent at 27⁰C for 60 minutes. The Freundlich adsorption isotherms and pseudo first order kinetics models were the most suitable for the biosorption of lead ions and the maximum adsorption capacity was 125 mgg-1 at optimized time 60 minutes. Conclusion: The finding indicated that Terminalia arjuna bark based biosorbents would potentially be an inexpensive and environment friendly for lead ions removal from water environment.

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“…Further there is no significant effect on lead ion removal on increasing time up to 70min. At that time, equilibrium is attained and active sites get saturated [14][15][16].…”

Section: Influence Of Contact Timementioning

confidence: 99%

Terminalia arjuna Bark Biosorbent for Efficient Lead (II) Removal from Synthetic Wastewater

Kumari,

Singh,

Sangwan

et al. 2024

J. Sci. Res. Rep.

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“…Several methods have been employed to remove organic pollutants; these include adsorption, chlorination, reverse osmosis, and membrane filtration. Unfortunately, most have been shown to be ineffective in completely removing organic pollutants from industrial wastewater. − For instance, the adsorption method, which involves transfer of adsorbate (organic pollutants) onto adsorbent materials such as activated carbons, requires additional disposal of the adsorbate from the adsorbent after treatment, thus generating secondary pollution . Therefore, this makes this technique not suitable for elimination of organic waste pollutants.…”

Section: Introductionmentioning

confidence: 99%

Thin Films (FTO/BaTiO₃/AgNPs) for Enhanced Piezo-Photocatalytic Degradation of Methylene Blue and Ciprofloxacin in Wastewater

Masekela

Hintsho‐Mbita

Ntsendwana³

et al. 2022

ACS Omega

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In this study, we investigate the ability of barium titanate/silver nanoparticles (BaTiO 3 /AgNPs) composites deposited on a fluorine-doped tin oxide (FTO) glass using tape-casting method to produce piezoelectric thin film (FTO/BaTiO 3 /AgNPs) for piezocatalytic, photocatalytic, and piezo-photocatalytic degradation of methylene blue (MB) and ciprofloxacin (CIP) in wastewater. The prepared piezoelectric materials (BaTiO 3 and BaTiO 3 /AgNPs) were characterized using XRD, SEM, TEM, EDS, UV-DRS, TGA, PL, BET, EIS, and chronoamperometry. The UV-DRS showed the surface plasmon resonance (SPR) of Ag nanoparticles on the surface of BaTiO 3 at a wavelength of 505 nm. The TEM images revealed the average Ag nanoparticle size deposited on the surface of BaTiO 3 to be in the range of 10–15 nm. The chronoamperometry showed that the photoreduction of silver nanoparticles (AgNPs) onto BaTiO 3 (BTO) resulted in a piezo-electrochemical current enhancement from 0.24 to 0.38 mA. The composites (FTO/BaTiO 3 /AgNPs) achieved a higher degradation of MB and CIP when the photocatalysis and piezocatalysis processes were merged. Under both ultrasonic vibration and UV light exposure, FTO/BTO/AgNPs degraded about 72 and 98% of CIP and MB from wastewater, respectively. These piezoelectric thin films were shown to be efficient and reusable even after five cycles, suggesting that they are highly stable. Furthermore, the reactive oxygen species studies demonstrated that hydroxyl radicals (·OH) were the most effective species during degradation of MB, with minor superoxide radicals (·O 2 – ) and holes (h + ). From this study, we were able to show that these materials can be used as multifunctional materials as they were able to degrade both the dye and pharmaceutical pollutants. Moreover, they were more efficient through the piezo-photocatalytic process.

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Plant leaves waste for removal of metal ions

Godiya

Ruotolo²

2023

Emerging Techniques for Treatment of Toxic Metals From Wastewater

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Diethylamine functionalised Moringa oleifera leaves for the removal of chromium(VI) and bacteria from wastewater

Cited by 9 publications

References 59 publications

Terminalia arjuna Bark Biosorbent for Efficient Lead (II) Removal from Synthetic Wastewater

Terminalia arjuna Bark Biosorbent for Efficient Lead (II) Removal from Synthetic Wastewater

Thin Films (FTO/BaTiO₃/AgNPs) for Enhanced Piezo-Photocatalytic Degradation of Methylene Blue and Ciprofloxacin in Wastewater

Plant leaves waste for removal of metal ions

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Diethylamine functionalised Moringa oleifera leaves for the removal of chromium(VI) and bacteria from wastewater

Cited by 9 publications

References 59 publications

Terminalia arjuna Bark Biosorbent for Efficient Lead (II) Removal from Synthetic Wastewater

Terminalia arjuna Bark Biosorbent for Efficient Lead (II) Removal from Synthetic Wastewater

Thin Films (FTO/BaTiO3/AgNPs) for Enhanced Piezo-Photocatalytic Degradation of Methylene Blue and Ciprofloxacin in Wastewater

Plant leaves waste for removal of metal ions

Contact Info

Product

Resources

About

Thin Films (FTO/BaTiO₃/AgNPs) for Enhanced Piezo-Photocatalytic Degradation of Methylene Blue and Ciprofloxacin in Wastewater