Pine bark crosslinked to cyclodextrin for the adsorption of 2-nitrophenol from an aqueous solution
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Agnes Pholosi
,
Saheed O. Sanni
Abstract
Adsorbents that are less expensive and more effective at removing organic micropollutants from wastewater have been developed through several approaches. Pine bark was treated with sodium hydroxide and then cross-linked to cyclodextrin using hexamethylene diisocyanate, in this study as an efficient adsorbent in the removal of 2-nitrophenol. FTIR, TGA and pHpzc analysis were used to characterize the biosorbent. The effects of pH, adsorbent mass, contact time and initial concentration on 2-nitrophenol removal was examined through batch adsorption studies. Pine bark crosslinked to cyclodextrin (PB-CD) surface functionalities was confirmed by FTIR analysis. It was discovered that solution pH, adsorbent mass, concentration and contact time all played a crucial role in the 2-nitrophenol uptake on PB-CD biosorbent and pine bark (PB) treated with sodium hydroxide. 2-Nitrophenol equilibrium was achieved with 0.05 g of adsorbents, with an initial concentration of 100–200 mg/dm3 at pH 5 after 60 min. The pseudo-second-order kinetic model and the Langmuir isotherm model significantly fitted the adsorption process. The Langmuir maximum capacities for PB and PB-CD were 47.36 mg/g and 77.82 mg/g, respectively. Overall, in the removal of 2-nitrophenol from an aqueous solution, PB-CD biosorbent is more cost-effective and efficient, in comparison with previously reported biosorbents in literature.
Funding source: National Research Foundation
Award Identifier / Grant number: Thuthuka/Grant No: 138388
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This work was financially supported by the National Research Foundation (NRF) of South Africa (Grant No: 138388) and Vaal University of Technology.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Articles in the same Issue
- Frontmatter
- Reviews
- Topology and applications of 2D Dirac and semi-Dirac materials
- Landscape ecological modeling to identify ecologically significant regions in Tumkur district, Karnataka
- Surfactants-surface active agents behind sustainable living
- Ecological footprint of poultry production and effect of environment on poultry genes
- Fluoride in water, health implications and plant-based remediation strategies
- Poultry nutrition
- Synthesis of N-containing heterocycles in water
- Inorganic nanoparticles promoted synthesis of heterocycles
- The role of analytical chemistry in poultry science
- Antibiotics in avian care and husbandry-status and alternative antimicrobials
- Removal of heavy metals from wastewater using synthetic chelating agents
- Azadirachtin in the aquatic environment: Fate and effects on non-target fauna
- Intensification of bioprocesses with filamentous microorganisms
- The science of genetically modified poultry
- Emerging in ovo technologies in poultry production and the re-discovered chicken model in preclinical research
- The Cambridge structural database (CSD): important resources for teaching concepts in structural chemistry and intermolecular interactions
- Microbial production of lactic acid using organic wastes as low-cost substrates
- Oxalic acid: recent developments for cost-effective microbial production
- Immobilization of α-amylase from Aspergillus fumigatus using adsorption method onto zeolite
- A comparative assessment of potentially harmful metals in the Lagos Lagoon and Ogun river catchment
- Formulation of a herbal topical cream against Tinea capitis using flavonoids glycosides from Dicerocaryum senecioides and Diospyros mespiliformis
- Biodegradable polymers – research and applications
- Adsorption of trichloroacetic acid from drinking water using polyethylene terephthalate waste carbon and periwinkle shells–based chitosan
- The vital use of isocyanide-based multicomponent reactions (MCR) in chemical synthesis
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- Computational study of propene selectivity and yield in the dehydrogenation of propane via process simulation approach
- A mini review on the prospects of Fagara zanthoxyloides extract based composites: a remedy for COVID-19 and associated replica?
- Physicochemical assessment and insilico studies on the interaction of 5-HT2c receptor with herbal medication bioactive compounds used in the treatment of premature ejaculation
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