A comprehensive review on analytical and equation derived multivariate chemometrics for the accurate interpretation of the degradation of aqueous contaminants

Rajendran, Harish Kumar; Fakrudeen, Mohammed Askkar Deen; Chandrasekar, Ragavan; Silvestri, Siara; Sillanpää, Mika; Padmanaban, V. C.

doi:10.1016/j.eti.2022.102827

Cited by 7 publications

(2 citation statements)

References 82 publications

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“…Canonical and ridge analysis has also been conducted for evaluating the influence of specific parameters on the response surface, facilitating the visualization of their roles in response optimization . This analysis is beneficial in gaining a more profound understanding of the geometry of the response surface .…”

Section: Resultsmentioning

confidence: 99%

Highly Efficient Cationic Surfactant Functionalized Alginate Hydrogel for Perfluorooctanoic Acid Adsorption: Optimization through Response Surface Methodology and Performance Evaluation for Aqueous Media

Naim Shaikh,

Nawaz

2024

ACS EST Water

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This study presents a sustainable treatment of perfluoroalkyl or polyfluoroalkyl substances in aquatic environments, focusing on perfluorooctanoic acid (PFOA), through adsorption. The study employs response surface methodology to assess the influence of the adsorbent's synthesis parameters� specifically, quantities of calcium, sodium alginate, and cetyltrimethylammonium bromide (CTAB)�on the adsorption efficiency of alginate hydrogel. The optimally synthesized hydrogel exhibits an average PFOA removal efficiency of 94.8 ± 2.1% at a 50 mg/L PFOA concentration. The experimental data for the hydrogel closely align with the pseudo-second-order rate kinetic model (R 2 = 0.97) and the Sips isotherm model (R 2 = 0.99), with a maximum possible adsorption capacity of 382.1 mg/g. Hydrogen bonding and electrostatic and hydrophobic interactions are identified as the primary mechanisms driving PFOA removal by the hydrogel. The hydrogel exhibits high values of selectivity parameters, indicative of its preference for PFOA even in the presence of a background river water matrix. A regenerant solution of 50% ethanol with 0.25% ammonium hydroxide demonstrates ∼80% regeneration capability, although it falls to ∼70% after three adsorption−desorption cycles. This study provides insights into the performance of CTAB-functionalized alginate hydrogel, showcasing its high uptake capacity and selectivity for PFOA.

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Section: Resultsmentioning

confidence: 99%

Highly Efficient Cationic Surfactant Functionalized Alginate Hydrogel for Perfluorooctanoic Acid Adsorption: Optimization through Response Surface Methodology and Performance Evaluation for Aqueous Media

Naim Shaikh,

Nawaz

2024

ACS EST Water

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“…From the perspective of analytical chemistry, the core content of qualitative and quantitative analysis in chemometrics is the rational and effective use of multivariate data [1,2], which are obtained from a variety of measurement techniques [3]. These techniques can range from small, portable near-infrared (NIR) spectrometers to complex and expensive techniques such as liquid or gas chromatography-mass spectrometry (LC-MS or GC-MS), or even multi-dimensional implementations like GCxGC/MS [4,5].…”

Section: Introductionmentioning

confidence: 99%

Fusion Recalibration Method for Addressing Multiplicative and Additive Effects and Peak Shifts in Analytical Chemistry

Jiang,

Zhang,

et al. 2023

Chemosensors

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Analytical chemistry relies on the qualitative and quantitative analysis of multivariate data obtained from various measurement techniques. However, artifacts such as missing data, noise, multiplicative and additive effects, and peak shifts can adversely affect the accuracy of chemical measurements. To ensure the validity and accuracy of results, it is crucial to preprocess the data and correct for these artifacts. This paper proposes a fusion recalibration algorithm, called Spectral Offset Recalibration (SOR), that combines the Extended Multiplicative Signal Correction (EMSC) and Correlation-Optimized Warping (COW) algorithms to address both multiplicative and additive effects and peak shifts. The algorithm incorporates prior spectroscopic knowledge to down-weight or disregard spectral regions with strong absorption or significant distortion caused by peak alignment algorithms. Experimental validation on wood NIR datasets and simulated datasets demonstrates the effectiveness of the proposed method. The fusion recalibration approach offers a comprehensive solution for accurate analyses and predictions in analytical chemistry by mitigating the impact of artifacts.

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UiO-66 octahedrons for adsorptive removal of direct blue-6: process optimization, interaction mechanism, and phytotoxicity assessment

Rajendran,

Das,

Chandrasekar

et al. 2023

Environ Sci Pollut Res

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A comprehensive review on analytical and equation derived multivariate chemometrics for the accurate interpretation of the degradation of aqueous contaminants

Cited by 7 publications

References 82 publications

Highly Efficient Cationic Surfactant Functionalized Alginate Hydrogel for Perfluorooctanoic Acid Adsorption: Optimization through Response Surface Methodology and Performance Evaluation for Aqueous Media

Highly Efficient Cationic Surfactant Functionalized Alginate Hydrogel for Perfluorooctanoic Acid Adsorption: Optimization through Response Surface Methodology and Performance Evaluation for Aqueous Media

Fusion Recalibration Method for Addressing Multiplicative and Additive Effects and Peak Shifts in Analytical Chemistry

UiO-66 octahedrons for adsorptive removal of direct blue-6: process optimization, interaction mechanism, and phytotoxicity assessment

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