A novel quaternized resin with acrylonitrile/divinylbenzene/vinylbenzyl chloride skeleton for the removal of nitrate and phosphate

Sowmya, Appunni; Meenakshi, Sankaran

doi:10.1016/j.cej.2014.07.015

Cited by 51 publications

(23 citation statements)

References 29 publications

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“…This result is beneficial to its wide application for wastewater treatment. These results are in agreement with those obtained by other researchers who investigated the nitrate adsorption using resins [17,23]. On the other hand, the adsorption capacity was decreased to 52 and 48 mg/g, respectively, when the pH value was lower than 3 or higher than 10.…”

Section: Effect Of Solution Phsupporting

confidence: 92%

Performance of surfactant‐modified activated carbon prepared from dates wastes for nitrate removal from aqueous solutions

Allalou

Miroud

Belmedani

et al. 2018

Env Prog and Sustain Energy

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New material (AC‐CTABr) was successfully prepared from chemical activation of dates wastes (AC), followed by cationic surfactant modification and was used to enhance nitrate removal from aqueous solutions. Brunauer, Emmett and Teller (BET) analysis revealed good binding of quaternary ammonium groups on the surface (1407 m2/g for the AC and 569 m2/g for the AC‐CTABr). Batch experiments were conducted to examine the effect of contact time, solution pH, adsorbent dose, and initial concentration of nitrate. Preliminary results showed an improvement of nitrate removal from 14% to 60% for the AC and the AC‐CTABr, respectively. Also, the adsorption kinetic was very fast; the equilibrium was achieved within the first 5 min of contact time between the adsorbents and the nitrate solution. Application of several isotherm models has shown that Langmuir and Freundlich models described well the experimental data with a maximum adsorption capacity of 83.33 mg/g. Three simplified kinetic models were tested to investigate the adsorption mechanism. The pseudo‐second order model was found to describe adequately the experimental kinetic data. Results showed that the new adsorbent material is a suitable adsorbent for nitrate removal. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S403–S411, 2019

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Section: Effect Of Solution Phsupporting

confidence: 92%

Performance of surfactant‐modified activated carbon prepared from dates wastes for nitrate removal from aqueous solutions

Allalou

Miroud

Belmedani

et al. 2018

Env Prog and Sustain Energy

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“…However, extra phosphate in waters has promoted the growth of cyanobacteria as harmful algal blooms, which can not only seriously destroy the biodiversity but also threaten the drinking water safety (Paerl and Huisman 2008). Therefore, a great deal of effort has been devoted toward the development of various new techniques to reduce and control the concentration of phosphate in wastewater (Barca et al 2012;Yao et al 2011a;Hui et al 2014;Sowmya and Meenakshi 2014).…”

Section: Introductionmentioning

confidence: 99%

Phosphate Adsorption onto Granular-Acid-Activated-Neutralized Red Mud: Parameter Optimization, Kinetics, Isotherms, and Mechanism Analysis

Cong

Zhang

et al. 2015

Water Air Soil Pollut

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Powdered-acid-activated-neutralized red mud (Aan-RM), the chemico-physically modified product of red mud, was for the first time employed with hydroxypropyl methylcellulose and powdered straw as the main ingredients for granular Aan-RM production for phosphate removal. In order to better understand the phosphate adsorption characteristics of granular Aan-RM, the influence of operational parameters on the performance of granular Aan-RM and the possible adsorption mechanisms involved were investigated. The results demonstrated that the adsorbent dosage, adsorption temperature, and initial solution pH influenced the adsorption performance of granular Aan-RM significantly. The maximum phosphate adsorption capacity of granular Aan-RM reached 153.227 mg/g with the granular Aan-RM dosage of 3.0 g/L, adsorption temperature of 40°C, and initial solution pH of 6.0. The whole adsorption process was well described by nth-order kinetic model and Langmuir-Freundlich isotherm. Meanwhile, X-ray photoelectron spectroscopy (XPS) analysis of P 2p peak on granular Aan-RM after phosphate adsorption demonstrated that 79.01 % of the phosphate was adsorbed through precipitation and ion exchange mechanisms with strong chemical bonds, and 20.99 % of the phosphate was adsorbed through surface deposition mechanism with weak chemical bonds.

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“…Again, the XRD peaks around 2θ = 17.5˚ and 35˚ disappeared, confirming the successful modification. However, the results showed that the modification had no effect on the structure and crystal nature of the WNS (Sowmya and Meenakshi, 2014)…”

Section: X-ray Diffraction Analysismentioning

confidence: 92%

“…Traditional adsorbents and agricultural waste (AW) employed to remove phosphate and nitrate exhibited low adsorption capacities (Hamoudi and Belkacemi, 2013;Banu and Meenakshi, 2017). However, studies reveal that chemical or physical modification of AW adsorbent improves its adsorption capacity (Kani et al, 2021;Xu et al, 2012;Sowmya and Meenakshi, 2014). A classic instance is the CTAB functionalized walnut shell, which enhanced Congo red uptake substantially owing to the binding ability or ionic reaction between the functionalized sorbents and the anionic dye molecules, while there was also binding capacity toward Bisphenol A from solution (Dovi et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Amine-grafted Walnut Shell for Efficient Removal Phosphate and Nitrate from Aqueous Solution

Dovi¹,

Aryee²,

Li³

et al. 2021

Preprint

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The presence of emerging pollutants such as PO43− and NO3− in water bodies has attracted worldwide concern about their severe effects on water bodies and the health of humankind in general. Therefore, to preserve the health of humankind and environmental safety, it is of the essence that industrial effluents are treated before they are discharged into water bodies. To accomplish this, the walnut shell was functionalized (ACWNS) with amine for effective removal of PO43− and NO3−. Characterization studies of ACWNS were conducted using FTIR, XRD, XPS and BET techniques. Removal of both ions was enhanced at lower temperature (293 K). The maximum uptake capacity of phosphate and nitrate, at 293 K, was 82.2 and 35.7 mg g− 1, respectively. The primary mechanism by which these ions were uptaken onto ACWNS could be electrostatic interactions and hydrogen bonding.Pseudo-second-order kinetics fitted the PO43̶ and NO3− adsorption, while Freundlich and Langmuir models best fitted the PO43̶ and NO3̶ adsorption, respectively. Furthermore, in the binary system, the uptake capacity of phosphate decreased by 14.4% while nitrate witnessed a reduction in its uptake capacity by 10.4 %. So ACWNS has a higher attraction towards both ions and this could be attributed to the existence of a variety of active areas on ACWNS that exhibit a degree of specificity for the individual anions. Results obtained from real water samples analysis confirmed ACWNS as highly efficient to be utilized for practical remediation processes.

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A novel quaternized resin with acrylonitrile/divinylbenzene/vinylbenzyl chloride skeleton for the removal of nitrate and phosphate

Cited by 51 publications

References 29 publications

Performance of surfactant‐modified activated carbon prepared from dates wastes for nitrate removal from aqueous solutions

Performance of surfactant‐modified activated carbon prepared from dates wastes for nitrate removal from aqueous solutions

Phosphate Adsorption onto Granular-Acid-Activated-Neutralized Red Mud: Parameter Optimization, Kinetics, Isotherms, and Mechanism Analysis

Amine-grafted Walnut Shell for Efficient Removal Phosphate and Nitrate from Aqueous Solution

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