Phosphate removal from aqueous solution using iron oxides: Adsorption, desorption and regeneration characteristics

Ajmal, Zeeshan; Muhmood, Atif; Usman, Muhammad; Kizito, Simon; Lu, Jiaxin; Dong, Renjie; Wu, Shubiao

doi:10.1016/j.jcis.2018.05.084

Cited by 274 publications

(94 citation statements)

References 52 publications

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“…C 0 (mg/L) and C e (mg/L) are the concentrations of Pb 2+ solution before and equilibrium adsorption, respectively. Adsorption kinetic experiments (0–6 h) were studied, and the adsorption isotherm was used to evaluate the adsorption capacity of HA@Fe 3 O 4 @N‐CDs hybrids on Pb 2+ and define how the adsorbate interacts with adsorbents …”

Section: Methodsmentioning

confidence: 99%

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Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion

Zhou

Xie

et al. 2019

J Biomedical Materials Res

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The trinary hydroxyapatite@Fe3O4@N‐doped carbon dots (HA@Fe3O4@N‐CDs) hybrids were prepared by one‐pot hydrothermal approach and utilized to detect and remove lead ion from aqueous solution. The structures and morphologies of as‐obtained nanorod‐like HA@Fe3O4@N‐CDs hybrids were characterized by X‐ray diffraction, scanning electron microscopy, and X‐ray photoelectron spectroscopy measurements. These HA@Fe3O4@N‐CDs hybrids possess good magnetism by magnetic hysteresis test and multi‐colored fluorescence by the CLSM measurement. Furthermore, the as‐obtained hybrids display excellent biocompatibility by MTT assay. Importantly, the trinary magnetic HA@Fe3O4@N‐CDs hybrids as a green detector and adsorbent of Pb2+ were investigated. The influence of the different pH, the concentration of heavy metal, and the maximum adsorption capacity on removal efficiency was measured in detail. The maximum Pb2+ adsorption capacity on HA@Fe3O4@N‐CDs hybrids is 450 mg/g. The kinetic mechanism was a pseudo‐second order model, and the isotherm data was fitted well by the Langmuir isotherm and Freundlich model. Hence, the nanorod‐like HA@Fe3O4@N‐CDs hybrids could be a multifunctional material with significant potential applications in heavy metal detection and adsorption, bone tissue regeneration, magnetic therapy, and biomedicine. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part A, 2019.

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Section: Methodsmentioning

confidence: 99%

“…Adsorption kinetic experiments (0-6 h) were studied, 38,39 and the adsorption isotherm was used to evaluate the adsorption capacity of HA@Fe 3 O 4 @N-CDs hybrids on Pb 2+ and define how the adsorbate interacts with adsorbents. [39][40][41]…”

Section: Adsorption Experimentsmentioning

confidence: 99%

Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion

Zhou

Xie

et al. 2019

J Biomedical Materials Res

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“…Ötrofikasyondan doğal suları korumak için deşarjdan önce atıksulardan fosfat giderilmelidir [8]. Atıksulardan fosfat giderimi konusunda yürütülen çalışmalarda kimyasal çökelme [9], biyolojik arıtma [10] ve adsorpsiyon [2,6,11] gibi çeşitli arıtma prosesleri kullanılmıştır. Kimyasal çökelme fosfat gideriminde etkili bir yöntem olmakla birlikte bu yöntemin dezavantajı aşırı kimyasal reaktiflerin ve oluşan çamurun ikincil kirlenmeye neden olmasıdır.…”

Section: Igi̇ri̇şunclassified

“…Kimyasal çökelme fosfat gideriminde etkili bir yöntem olmakla birlikte bu yöntemin dezavantajı aşırı kimyasal reaktiflerin ve oluşan çamurun ikincil kirlenmeye neden olmasıdır. Biyolojik prosesin fosfor biriken bakterilere bağlı olduğu göz önüne alındığında, bu prosesler fosfat giderimi için kolayca optimize edilemeyebilir ve böylece biyolojik arıtma katı deşarj gereksinimlerini karşılayamayabilir [11]. Bu prosesler arasında adsorpsiyon, düşük maliyeti ve yüksek veriminden dolayı sulu ortamlardan fosfat gideriminde en etkili proseslerden biri olarak gösterilmiştir [12].…”

Section: Igi̇ri̇şunclassified

Aktif Karbon Destekli Nano Boyutlu Sıfır Değerlikli Demir ile Sulu Ortamlardan Fosfat Giderimi: Cevap Yüzey Yöntemi ile İşletme Parametrelerinin Optimizasyonu

Tunç

2019

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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z-Bu çalışmada, sulu faz borhidrür indirgeme metodu ile aktif karbon destekli nano boyutlu sıfır değerikli demir (AC-nZVI) partikülleri sentezlenmiş ve sentezlenen AC-nZVI partikülleri sulu ortamlardan fosfat gideriminde kullanılmıştır. Fosfat giderim verimi üzerinde çözelti pH'ı, AC-nZVI miktarı, başlangıç fosfat konsantrasyonu ve temas süresi işletme parametrelerinin etkilerini ve optimum şartları belirlemek için cevap yüzey metodu (CYM) uygulanmıştır. Deneysel dizaynda ve sonuçların analizinde merkezi kompozit dizaynı (MKD) kullanılmıştır. Varyans analizi (ANOVA) sonuçlarına göre, ikinci dereceden polinominal model istatistiksel olarak anlamlı (P=0.0002) ve determinasyon katsayısı (R 2 ) 0.8735 olarak bulunmuştur. AC-nZVI ile maksimum fosfat giderimi için optimum şartlar pH 3.09, AC-nZVI miktarı 0.59 g/L, fosfat konsantrasyonu 30.69 mg P/L ve temas süresi 66.58 dakika olarak belirlenmiştir. Bu çalışmanın sonuçları, atıksulardan fosfat gideriminde AC-nZVI'nın etkili bir adsorbent olarak kullanılabileceğini göstermiştir. Anahtar Kelimeler-Adsorpsiyon, Fosfat, AC-Nzvı, Optimizasyon, Cevap Yüzey Yöntemi.bstract-In this study, activated carbon-supported nano-scale zero-valent iron particles were synthesized by the aqueous phase borohydride reduction method and the synthesized AC-nZVI particles were used for the phosphate removal from aqueous solutions. The effects of the operating parameters that included pH, AC-nZVI amount, initial phosphate concentration and contact time on the phosphate removal were investigated using response surface methodology. The central composite design was employed for the experimental design and analysis of the results. According to results of variance analysis (ANOVA), the second order polynomial model was statistically significant (P=0.0002) and determination coefficient (R 2 ) was 0.8735. The optimum conditions for phosphate removal by AC-nZVI were determined as pH of 3.09, AC-nZVI amount of 0.59 g/L, initial phosphate concentration of 30.69 mg P/L and contact time of 66.58 minutes. The results of this study demonstrated that AC-nZVI could be used as an effective adsorbent for phosphate removal from wastewater.

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“…Recently, many newly developed adsorbents for P removal have been investigated, including biochars (Haddad et al 2018), biomass (Phragmites sp.) (Markou et al 2015), magnetite (Yu et al 2017), zeolite , sepiolite (Yin et al 2013), red mud (Ye et al 2015), iron oxides (Ajmal et al 2018) and mussel shells (Paradelo et al 2016). Recovery of P from wastewater through adsorption onto natural solid waste material may provide an additional low-cost alternative, which could also create a P-rich product that could be repurposed (i.e.…”

Section: Introductionmentioning

confidence: 99%

Synthesis optimisation and characterisation of chitosan-calcite adsorbent from fishery-food waste for phosphorus removal

Pap

Kirk

Sekulić

et al. 2020

Environ Sci Pollut Res

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Here, Box-Behnken design (BBD) approaches were utilised to optimise synthesis methodology for the chitosan-calcite rich adsorbent (CCM) made from fishery-food waste material (crab carapace), using low-temperature activation and potassium hydroxide (KOH). The effect of activation temperature, activation time and impregnation ratio was studied. The final adsorbent material was evaluated for its phosphorus (P) removal efficiency from liquid phase. Results showed that impregnation ratio was the most significant individual factor as this acted to increase surface deacetylation of the chitin (to chitosan) and increased the number of amine groups (-NH 2 ) in the chitosan chain. P removal efficiency approached 75.89% (at initial P concentration of 20 mg/L) under optimised experimental conditions, i.e. where the impregnation ratio for KOH:carapace (g/g) was 1:1, the activation temperature was 105°C and the activation time was 150 min. Predicted responses were in good agreement with the experimental data. Additionally, the pristine and CCM material were further analysed using scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDX), Brunauer-Emmett-Teller technique (BET), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and thermal gravimetric analysis (TGA). Characterisation showed enhancements in surface chemistry (introducing positively charged amine groups), textural properties and thermal stability of the CCM.

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Phosphate removal from aqueous solution using iron oxides: Adsorption, desorption and regeneration characteristics

Cited by 274 publications

References 52 publications

Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion

Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion

Aktif Karbon Destekli Nano Boyutlu Sıfır Değerlikli Demir ile Sulu Ortamlardan Fosfat Giderimi: Cevap Yüzey Yöntemi ile İşletme Parametrelerinin Optimizasyonu

Synthesis optimisation and characterisation of chitosan-calcite adsorbent from fishery-food waste for phosphorus removal

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Phosphate removal from aqueous solution using iron oxides: Adsorption, desorption and regeneration characteristics

Cited by 274 publications

References 52 publications

Biocompatible HA@Fe3O4@N‐CDs hybrids for detecting and absorbing lead ion

Biocompatible HA@Fe3O4@N‐CDs hybrids for detecting and absorbing lead ion

Aktif Karbon Destekli Nano Boyutlu Sıfır Değerlikli Demir ile Sulu Ortamlardan Fosfat Giderimi: Cevap Yüzey Yöntemi ile İşletme Parametrelerinin Optimizasyonu

Synthesis optimisation and characterisation of chitosan-calcite adsorbent from fishery-food waste for phosphorus removal

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Product

Resources

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Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion

Biocompatible HA@Fe₃O₄@N‐CDs hybrids for detecting and absorbing lead ion