Green synthesized hydroxyapatite nanoadsorbent for the adsorptive removal of AB113 dye for environmental applications

Vinayagam, Ramesh; Pai, Sathish; Murugesan, Gokulakrishnan; Varadavenkatesan, Thivaharan; Kaviyarasu, K.; Selvaraj, Raja

doi:10.1016/j.envres.2022.113274

Cited by 38 publications

(2 citation statements)

References 53 publications

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“…5, Langmuir had the highest level of conformity with the highest R 2 data compare to the Temkin and Freundlich. This result suggests that the CHS-GLU/BCL biosorbent efficiently absorbs AR88 based on the Langmuir model, confirming a monolayer adsorption mechanism[58]. The model developed by Langmuir determined the highest adsorption capacity (qmax) of CHS-GLU/BCL biosorbent for AR88 through monolayer adsorption was 148 mg/g.…”

supporting

confidence: 66%

Immobilization of Bacillus subtilis in biohybrid crosslink chitosan-glutaraldehyde for acid red 88 dye removal: Box–Behnken design optimization and mechanism study

Agha,

Allaq,

Jawad

et al. 2024

Preprint

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Herein, a novel biomaterial of crosslink chitosan-glutaraldehyde combined with Bacillus subtilis biomass (CHS-GLU/BCL) was synthesized via hydrothermal synthesis to effectively remove the anionic dye (Acid red 88; AR88) from synthetic wastewater solution. The features of the CHS-GLU/BCL biomaterial were assessed using SEM-EDX, pHpzc, BET, and FTIR studies. To optimize the adsorption efficiency of CHS-GLU/BCL to remove AR88 dye a Box-Behnken design (BBD) was utilized. The experiment utilized three independent variables including, the dosage of CHS-GLU/BCL (A: 0.02–0.1 g/100 mL), the contact time (B: 5–30 min), and the pH of the AR88 solution (C: 4–10). The investigation of adsorption kinetics confirms that the AR88 dye adsorption onto the CHS-GLU/BCL biomaterial follows the pseudo second order and pseudo first order kinetics models. Moreover, the isotherm data fits the Langmuir isotherm model. The maximum adsorption capacity (qmax) of AR88 dye onto CHS-GLU/BCL biomaterial was determined to be 148 mg/g in an acidic pH environment (pH = 4). The adsorption mechanism of AR88 and dye onto the biomaterial surface can be related to many connections, such as hydrogen bonding, n-π interactions, and electrostatic attraction. Hence, the biomaterial CHS-GLU/BCL has a good potency affinity for adsorbing anionic dye.

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supporting

confidence: 66%

Immobilization of Bacillus subtilis in biohybrid crosslink chitosan-glutaraldehyde for acid red 88 dye removal: Box–Behnken design optimization and mechanism study

Agha,

Allaq,

Jawad

et al. 2024

Preprint

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“…Nanoparticles are particles with sizes ranging between 1 and 100 nm. These particles possess distinctive biological and physicochemical properties due to their shape, size, composition, morphology, and surface area to volume ratio [1]. Unlike bulk materials, they have unique qualities such as good catalytic power, large surface area, thermal stability, and enhanced reactivity [2].…”

Section: Introductionmentioning

confidence: 99%

Antibacterial, Antioxidant, and Phytotoxic Potential of Phytosynthesized Silver Nanoparticles Using Elaeagnus umbellata Fruit Extract

Zulfiqar

Amjad

Mehmood³

et al. 2022

Molecules

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Due to its eco-friendliness, cost-effectiveness, ability to be handled safely, and a wide variety of biological activities, the green plant-mediated synthesis of nanoparticles has become increasingly popular. The present work deals with the green synthesis and characterization of silver nanoparticles (AgNPs) using Elaeagnus umbellata (fruit) and the evaluation of its antibacterial, antioxidant, and phytotoxic activities. For the synthesis of AgNPs, fruit extract was treated with a 4 mM AgNO3 solution at room temperature, and a color change was observed. In UV-Visible spectroscopy, an absorption peak formation at 456 nm was the sign that AgNPs were present in the reaction solution. Scanning electron microscopy and physicochemical X-ray diffraction were used to characterize AgNPs, which revealed that they were crystalline, spherical, and had an average size of 11.94 ± 7.325 nm. The synthesized AgNPs showed excellent antibacterial activity against Klebsiella pneumoniae (14 mm), Staphylococcus aureus (13.5 mm), Proteus mirabilis (13 mm), and Pseudomonas aeruginosa (12.5 mm), as well as considerable antioxidant activity against DPPH with 69% inhibition at an IC50 value of 43.38 µg/mL. AgNPs also exhibited a concentration-dependent effect on rice plants. Root and shoot length were found to be positively impacted at all concentrations, i.e., 12.5 µg/mL, 25 µg/mL, 50 µg/mL, and 100 µg/mL. Among these concentrations, the 50 µg/mL concentration of AgNPs was found to be most effective. The plant biomass decreased at higher AgNP exposure levels (i.e., 100 µg/mL), whereas 50 µg/mL caused a significant increase in plant biomass as compared to the control. This study provides an eco-friendly method for the synthesis of AgNPs which can be used for their antibacterial and antioxidant activities and also as growth promoters of crop plants.

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Efficient removal of emerging pollutant oxytetracycline by cost‐effective biochar–hydroxyapatite composite

Tran,

Le,

Nguyen

et al. 2024

Asia-Pacific J Chem Eng

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Biochar (BC) and hydroxyapatite (HAp) are widely used in environmental remediation due to their high adsorption capacity, porous structure, large specific surface area, chemical stability, non‐toxicity, and low solubility. Combining BC and HAp is a green and effective strategy for creating new adsorbents (BCH) that have a synergistic impact on wastewater treatment. In this study, BCH composites derived from apatite ore and macadamia nut shells were synthesized by the wet impregnation method to remove oxytetracycline (OTC) from aqueous solutions. The BC‐HAp composite with a ratio of 10:1 (by weight) was the most effective material for removing OTC. The Redlich–Peterson model achieved the highest correlation coefficient among the four models tested (Freundlich, Langmuir, Temkin, and Redlich–Peterson). The maximum adsorption capacity calculated with the Langmuir isotherm was 49.59 mg g−1. It was found that the adsorption process was significantly affected by the solution pH. The bipolar form of the drug was found to be OTC±, and the adsorption was most effective in solutions with a pH of 6. The OTC adsorption dominant mechanisms on nanocomposites could be electrostatic attraction, hydrogen bonding formation, surface complexation, or ion exchange. Therefore, the BCH composite showed great potential for removing OTC pollutants in a cost‐effective, and environmentally friendly manner.

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Green synthesized hydroxyapatite nanoadsorbent for the adsorptive removal of AB113 dye for environmental applications

Cited by 38 publications

References 53 publications

Immobilization of Bacillus subtilis in biohybrid crosslink chitosan-glutaraldehyde for acid red 88 dye removal: Box–Behnken design optimization and mechanism study

Immobilization of Bacillus subtilis in biohybrid crosslink chitosan-glutaraldehyde for acid red 88 dye removal: Box–Behnken design optimization and mechanism study

Antibacterial, Antioxidant, and Phytotoxic Potential of Phytosynthesized Silver Nanoparticles Using Elaeagnus umbellata Fruit Extract

Efficient removal of emerging pollutant oxytetracycline by cost‐effective biochar–hydroxyapatite composite

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