Wastewater generation and treatment by various eco-friendly technologies: Possible health hazards and further reuse for environmental safety

Kumar, Saroj; Nand, Sampurna; Azad, Iqbal; Bharagava, Ram Naresh; Ferreira, Luiz Fernando Romanholo; Dutta, Venkatesh

doi:10.1016/j.chemosphere.2022.137547

Cited by 34 publications

(6 citation statements)

References 113 publications

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“…Nowadays, the growing concern over chemical pollutants and their impact on ecological security and human health has gained significant attention. , Styrene is an important industrial material for polymers and plays an important role in the manufacturing of plastics and rubber. − However, styrene is also a notoriously toxic organic compound. It infiltrates the human body through either inhalation or skin absorption, which is harmful to the nervous system, blood system, and digestive system, and even causes cancer. , Fortunately, styrene can be transformed into phenylglyoxylic acid (PGA) and subsequently be expelled from the body .…”

Section: Introductionmentioning

confidence: 99%

Flexible Hexacarboxylate-Based Cobalt Metal–Organic Framework for the Turn-On/Off Detection of Cr³⁺, Al³⁺, Fe³⁺, and Phenylglyoxylic Acid

Luo,

Xu,

et al. 2024

Crystal Growth & Design

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Two novel cobalt(II)-based metal−organic frameworks (MOFs), namely, {[Co 3 (TTHA)(bibp) 2 (H 2 O)]} n (1) and {[Co 2 (H 2 TTHA)(bidpe) 2 ]} n (2) (H 6 TTHA = 1,3,5-triazine-2,4,6triamine hexaacetic acid, bibp = 4,4′-bis(imidazolyl)biphenyl, bidpe = 4,4-bis(imidazoly)diphenyl ether), were hydrothermally prepared based on the mixed ligands strategy and fully characterized. Due to the rich coordination modes of the carboxylic acid ligand, 1 possesses a three-dimensional (3D) structure with two secondary building units ([Co 3 N 3 (CO 2 ) 4 -(CO) 4 ] and [Co 2 N 2 (CO 2 ) 4 ]), whereas 2 exhibits a tangled onedimensional (1D) chain structure and further forms a 3D structure assembled by weak interactions. Interestingly, 1 can serve as an unusual turn-on sensor for the detection of trivalent metal ions (Al 3+ , Cr 3+ , and Fe 3+ ) in an aqueous solution with a low detection limit, and 2 shows high-sensitivity fluorescence turn-off behavior toward polystyrene and styrene biomarker phenylglyoxylic acid (PGA). Significantly, 2 can effectively sense the PGA in complicated biological environments. The mechanism study indicated that the absorbance-caused enhancement mechanism is responsible for the fluorescence turn-on phenomena of 1 induced by trivalent metal ions, while the occurrence of the structural collapse of 2 leads to a turn-off effect toward PGA.

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Section: Introductionmentioning

confidence: 99%

Flexible Hexacarboxylate-Based Cobalt Metal–Organic Framework for the Turn-On/Off Detection of Cr³⁺, Al³⁺, Fe³⁺, and Phenylglyoxylic Acid

Luo,

Xu,

et al. 2024

Crystal Growth & Design

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“…To treat wastewater, numerous environmentally friendly and physicochemical techniques have been developed, such as filtration, adsorption, chemical degradation, biodegradation, photodegradation, and precipitation. [15][16][17][18] Among these methods, physical adsorption processes are considered reliable due to their efficiency and simplicity of operation and preparation. They are often preferred as they offer a cost-effective approach to water treatment.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, it is crucial to implement necessary measures to reduce water contamination caused by dye effluents. To treat wastewater, numerous environmentally friendly and physicochemical techniques have been developed, such as filtration, adsorption, chemical degradation, biodegradation, photodegradation, and precipitation 15–18 . Among these methods, physical adsorption processes are considered reliable due to their efficiency and simplicity of operation and preparation.…”

Section: Introductionmentioning

confidence: 99%

Poly(O‐Toluidine)‐polyvinylpyrrolidone copolymer submerged MgFe₂O₄/CS‐OXSWCNTs nanocomposite for removal of acid red dye from aqueous solutions

Katowah,

Sadek

2024

J of Applied Polymer Sci

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In this study, a new hybrid material was created that exhibits excellent adsorption performance and high stability. POT‐PVP/MgF/CS‐OXSWCNTs NCs were synthesized using a three‐step approach. The process involved the chemical polymerization of poly(o‐toluidine)‐polyvinylpyrrolidone (POT‐PVP) with MgFe2O4 nanoparticles (MgF NPs) and chitosan‐oxidized single‐wall carbon nanotubes (CS‐OXSWCNTs). The synthesis process involved the use of an egg white method to synthesize MgF NPs and cross‐linking chitosan with OXSWCNTs using glutaraldehyde (GA) to obtain CS‐OXSWCNTs. The POT‐PVP copolymer was then used to coat MgF NPs and CS‐OXSWCNTs NCs. The successful synthesis of the NCs with strong component interaction was confirmed by several characterization techniques, including X‐ray diffraction spectroscopy (XRD), Fourier‐transform infrared spectroscopy (FTIR), and Raman spectroscopy. Microscopy analysis using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) verified that the POT‐PVP copolymer had properly coated the MgF NPs and CS‐OXSWCNTs NCs. The N2 adsorption–desorption isotherm verified that the specific surface area of NCs had increased with the addition of MgF NPs and CS‐OXSWCNTs NCs. Furthermore, the composite structure greatly improved the thermal stability of POT‐PVP/MgF/CS‐OXSWCNTs NCs. To evaluate how well the nanocomposites (NCs) eliminated pollutants, an artificially produced toxic effluent that contained acid red dye (A.R) was applied. To investigate their impact on dye removal, several parameters were changed, including pH, adsorbent dosage, time, temperature, and ionic strength. The POT‐PVP/MgF/CS‐OXSWCNTs NCs showed a higher removal rate based on a greater surface area, stability, and conducting power than MgF NPs and POT‐PVP. It was found that 25 mg L−1 and 7.5 mg were the optimal dye concentration and adsorbent dosage, respectively. The POT‐PVP/MgF/CS‐OXSWCNTs NCs achieved 99.46% removal efficiency at an acidic pH of 2. The NCs were found to have a maximum dye adsorption capacity of 107.4 mg g−1, and the adsorption process followed the pseudo‐second‐order kinetics. Thermodynamic analyses revealed that the dye adsorption onto POT‐PVP/MgF/CS‐OXSWCNTs NCs was endothermic, implying a spontaneous and physical adsorption mechanism. It can be inferred from these results that POT‐PVP/MgF/CS‐OXSWCNTs NCs are useful for eliminating dye pollutants from water.

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“…The consequences of urbanization, rapid population growth, and the concomitant need for economic development have led to the significant pollution of natural waters. Therefore, the development of sustainable methods for water and wastewater treatment is imperative nowadays [ 1 ]. Along with the progress of the industrial sector, most natural-origin dyes have been supplanted by synthetic dyes as a result of rising demands and prohibitive costs associated with extracting natural compounds [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Brilliant Green Dye onto a Mercerized Biosorbent: Kinetic, Thermodynamic, and Molecular Docking Studies

Enache¹,

Cojocaru²,

Samoilă³

et al. 2023

Molecules

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This study reports the valorization of pistachio shell agricultural waste, aiming to develop an eco-friendly and cost-effective biosorbent for cationic brilliant green (BG) dye adsorption from aqueous media. Pistachio shells were mercerized in an alkaline environment, resulting in the treated adsorbent (PSNaOH). The morphological and structural features of the adsorbent were analyzed using scanning electron microscopy, Fourier transform infrared spectroscopy, and polarized light microscopy. The pseudo-first-order (PFO) kinetic model best described the adsorption kinetics of the BG cationic dye onto PSNaOH biosorbents. In turn, the equilibrium data were best fitted to the Sips isotherm model. The maximum adsorption capacity decreased with temperature (from 52.42 mg/g at 300 K to 46.42 mg/g at 330 K). The isotherm parameters indicated improved affinity between the biosorbent surface and BG molecules at lower temperatures (300 K). The thermodynamic parameters estimated on the basis of the two approaches indicated a spontaneous (ΔG < 0) and exothermic (ΔH < 0) adsorption process. The design of experiments (DoE) and the response surface methodology (RSM) were employed to establish optimal conditions (sorbent dose (SD) = 4.0 g/L and initial concentration (C0) = 10.1 mg/L), yielding removal efficiency of 98.78%. Molecular docking simulations were performed to disclose the intermolecular interactions between the BG dye and lignocellulose-based adsorbent.

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Wastewater generation and treatment by various eco-friendly technologies: Possible health hazards and further reuse for environmental safety

Cited by 34 publications

References 113 publications

Flexible Hexacarboxylate-Based Cobalt Metal–Organic Framework for the Turn-On/Off Detection of Cr³⁺, Al³⁺, Fe³⁺, and Phenylglyoxylic Acid

Flexible Hexacarboxylate-Based Cobalt Metal–Organic Framework for the Turn-On/Off Detection of Cr³⁺, Al³⁺, Fe³⁺, and Phenylglyoxylic Acid

Poly(O‐Toluidine)‐polyvinylpyrrolidone copolymer submerged MgFe₂O₄/CS‐OXSWCNTs nanocomposite for removal of acid red dye from aqueous solutions

Adsorption of Brilliant Green Dye onto a Mercerized Biosorbent: Kinetic, Thermodynamic, and Molecular Docking Studies

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Wastewater generation and treatment by various eco-friendly technologies: Possible health hazards and further reuse for environmental safety

Cited by 34 publications

References 113 publications

Flexible Hexacarboxylate-Based Cobalt Metal–Organic Framework for the Turn-On/Off Detection of Cr3+, Al3+, Fe3+, and Phenylglyoxylic Acid

Flexible Hexacarboxylate-Based Cobalt Metal–Organic Framework for the Turn-On/Off Detection of Cr3+, Al3+, Fe3+, and Phenylglyoxylic Acid

Poly(O‐Toluidine)‐polyvinylpyrrolidone copolymer submerged MgFe2O4/CS‐OXSWCNTs nanocomposite for removal of acid red dye from aqueous solutions

Adsorption of Brilliant Green Dye onto a Mercerized Biosorbent: Kinetic, Thermodynamic, and Molecular Docking Studies

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Flexible Hexacarboxylate-Based Cobalt Metal–Organic Framework for the Turn-On/Off Detection of Cr³⁺, Al³⁺, Fe³⁺, and Phenylglyoxylic Acid

Flexible Hexacarboxylate-Based Cobalt Metal–Organic Framework for the Turn-On/Off Detection of Cr³⁺, Al³⁺, Fe³⁺, and Phenylglyoxylic Acid

Poly(O‐Toluidine)‐polyvinylpyrrolidone copolymer submerged MgFe₂O₄/CS‐OXSWCNTs nanocomposite for removal of acid red dye from aqueous solutions