Performance of novel pillared eggshell-bentonite clay bio-composite for enhanced phosphate adsorption from aqueous media

Sudhakaran, Sandhya; Mahadevan, Harsha; Fathima S, Linsha; Krishnan, Krishnan Anoop

doi:10.1016/j.gsd.2023.100960

Cited by 5 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…54 Therefore, for both adsorbents, it can be thought that there is a system that starts with electrochemical attraction and ends with chemical adsorption. The R 2 values of D-R isotherms of phosphate adsorption on MOF-76 (Ce) and 59 23.6 compacted ferric (hydr)oxides 59 26.6 aluminum oxides 59 20.9 iron oxide doped halloysite nanotubes 47 4 1−100 5.42 Langmuir clay minerals Mg−Al hydrotalcite-loaded kaolin clay 60 7.5 10−200 11.92 Langmuir bentonite 61 7 1−50 7.13 Langmuir kaolinite 61 5.37 Modified Adsorbents iron pillared eggshell modified bentonite clay composite 62 3 15−100 60.51 Langmuir iron−carbon nanotube composites 63 10−800 36.5 Langmuir Mg coprecipitated peanut shell biochar 64 5−100 50.58 Langmuir lanthanum encapsulated chitosan-kaolin clay hybrid composite 65 5.3 50−300 106.48 Langmuir Biomaterials quaternary ammonium-based sugar cane bagasse 66 5.0 ± 0. isotherm cannot fully provide the mean adsorption energy to distinguish between a solid−liquid phase adsorption, physical, or chemical adsorption. 55 Postadsorption FTIR analyses were also performed to reveal the MOF-76 (Ce) and CeO 2 adsorption mechanism of phosphate ions.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Comparative Investigation of Phosphate Adsorption Efficiencies of MOF-76 (Ce) and Metal Oxides Derived from MOF-76 (Ce)

Civan Çavuşoğlu,

Özçelik,

Bayazit

2024

Langmuir

View full text Add to dashboard Cite

Phosphate pollution is a very challenging problem for the water environment. Phosphate mixed with water in various ways causes eutrophication. To sustain life in aquatic systems, phosphate ions must be cleaned. Therefore, it is very important to remove phosphate in wastewater. Here, an adsorption method has been tried for the removal of phosphate. MOF-76 (Ce), a ceriumbased metal−organic framework, was synthesized by a hydrothermal method. Since metal oxides are known to be successful in phosphate adsorption, CeO 2 nanoparticles were also obtained by pyrolysis of this MOF structure. The phosphate adsorption efficiencies of both adsorbents were compared. The characterization methods (SEM, FTIR, XRD, and TGA) were applied to adsorbents. The kinetic, isotherm, and thermodynamics studies were applied to experimental results. At 298 K, the adsorption capacity of MOF-76 (Ce) is higher than that of CeO 2 , according to Langmuir isotherm q m values. The q m values are 72.97 and 55.71 mg/g, respectively. Both adsorbents follow the pseudo secondorder kinetic model. It has been found that MOF-76 (Ce) has a pH-selective property in phosphate adsorption. No change was observed in the phosphate adsorption capacity of CeO 2 with pH. In terms of thermodynamics, the endothermic reaction is valid for both adsorbents.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 99%

Comparative Investigation of Phosphate Adsorption Efficiencies of MOF-76 (Ce) and Metal Oxides Derived from MOF-76 (Ce)

Civan Çavuşoğlu,

Özçelik,

Bayazit

2024

Langmuir

View full text Add to dashboard Cite

show abstract

“…Concentration of P i (mg L −1 ) p H Fe-zeolite-A 60 18.8 4.725 5 Magnetic Fe-oxide 61 10.9 2-20 2-6 Iron-modied biochar 62 2-3 0 -100 6-5 MIL-101(Al)-CS 63 49.8 30 3-10 Chitosan-La beads 64 107.7 50 4 SP-Zr-La 65 23.5 30 3 La 2 O 2 CO 3 /g-Fe 2 O 3 66 0.14 5-100 6.5 CaCl 2 -buckwheat biochar 67 75.3 5-1000 7 ES-bentonite 68 55.7 15-100 3 Fe(OH) 3 @CNF 69 142.9 10 4.5 Oh50-furfural 58 4.9/1.1 a 0-300 4.75/8.5 MGPA-3 hydrogel 70 38.8 10-150 6 ES-TWS composites (this study) 20-30/1 a 5-1200 4.5…”

Section: Characterisationmentioning

confidence: 99%

Eggshell incorporated agro-waste adsorbent pellets for sustainable orthophosphate capture from aqueous media

Steiger,

Bui,

Babalola

et al. 2024

RSC Sustain.

View full text Add to dashboard Cite

show abstract

Resourceful exploitation of sedimentary clay: Designing a dual‐chambered borosilicate glass reactor system for the efficient treatment of malachite green and phenol through SCRT adsorption and 5%Fe@SRCT catalysis via CWPO, with evaluation of seed germination and fish survival

Boualam,

El Alami,

Ibaghlin

et al. 2024

Water Environment Research

View full text Add to dashboard Cite

This study presents an innovative double‐walled borosilicate glass reactor system for the efficient treatment of liquid and gaseous wastewater. This reactor system allows precise temperature control, continuous pH monitoring, and controlled dosing of reagents to optimize reaction conditions. Detailed characterization was carried out by X‐ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), BET (specific surface area) analysis, point of zero charge (PZC), and scanning electron microscopy (SEM) for the SCR, SCRT, and 5%Fe@SCRT materials. For Malachite Green adsorption, SRCT demonstrated a maximum adsorption capacity of 39.78 ± 0.5 mg/g using the Langmuir isotherm model and followed pseudo‐second‐order kinetics. Optimum conditions for adsorption were found to be: an initial concentration of 50 ppm, an adsorbent dosage of 1 g/l, a pH of 8.5, and a temperature of 50°C. For the catalytic oxidation of phenol, 5%Fe@SRCT achieved a remarkable removal rate of 99.9 ± 0.1% under optimum conditions (50 ppm phenol, 1 g/l catalyst dosage, pH 3.5, H2O2 concentration 8.7 mM, and temperature 70°C). Intermediates identified during the reaction included hydroquinone, benzoquinone, catechol, and resorcinol, with degradation occurring over a 60‐minute reaction period. The 5%Fe@SCRT material showed excellent reusability in the removal of phenol by catalytic oxidation, with no significant loss of efficiency over three cycles, while the SRCT underwent three cycles of regeneration for the adsorption of Malachite Green. Scavenger tests confirmed the involvement of hydroxyl radicals in the catalytic oxidation process. In addition, fish survival tests after catalytic oxidation of phenol by 5%Fe@SRCT showed no impact on fish, underlining the environmental safety of this process. In addition, germination tests after decolorization of MG by SRCT demonstrated a good effect with no negative impact, reinforcing the ecological value of this innovative technology. These results highlight the innovative use of SCRT and 5%Fe@SCRT as versatile materials for environmental remediation, exploiting their effective adsorption capacities and efficient catalytic oxidation performance within the proposed double‐walled borosilicate glass reactor system.Practitioner Points The study demonstrates the effectiveness of an innovative reactor system employing SRCT adsorbent and Fe@SRCT catalyst for efficient removal of malachite green and phenol from wastewater. Environmental impact assessment, including seed germination and fish survival evaluation, validates the method's eco‐friendly potential. Implementation of this approach could significantly contribute to sustainable water treatment practices.

show abstract

Performance of novel pillared eggshell-bentonite clay bio-composite for enhanced phosphate adsorption from aqueous media

Cited by 5 publications

References 28 publications

Comparative Investigation of Phosphate Adsorption Efficiencies of MOF-76 (Ce) and Metal Oxides Derived from MOF-76 (Ce)

Comparative Investigation of Phosphate Adsorption Efficiencies of MOF-76 (Ce) and Metal Oxides Derived from MOF-76 (Ce)

Eggshell incorporated agro-waste adsorbent pellets for sustainable orthophosphate capture from aqueous media

Resourceful exploitation of sedimentary clay: Designing a dual‐chambered borosilicate glass reactor system for the efficient treatment of malachite green and phenol through SCRT adsorption and 5%Fe@SRCT catalysis via CWPO, with evaluation of seed germination and fish survival

Contact Info

Product

Resources

About