Removal of phosphate from aqueous solution using nanoscale zerovalent iron (nZVI)

Wen, Zhipan; Zhang, Yalei; Dai, Chaomeng

doi:10.1016/j.colsurfa.2014.06.017

Cited by 203 publications

(81 citation statements)

References 42 publications

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“…Although most of the lab-scale, pilot-scale and field demonstration studies targeted soil and groundwater remediation, nZVI has also been successfully applied for the stabilization of biosolids [5], the removal of phosphorus [6,7], the decoloration of dyes [8,9], as a membrane anti-fouling agent [10] and for the treatment of nuclear waste, explosives and herbicides [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Analytical characterisation of nanoscale zero-valent iron: A methodological review

Chekli

Bayatsarmadi

Sekine

et al. 2016

Analytica Chimica Acta

101

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Zero-valent iron nanoparticles (nZVI) have been widely tested as they are showing significant promise for environmental remediation. However, many recent studies have demonstrated that their mobility and reactivity in subsurface environments are significantly affected by their tendency to aggregate. Both the mobility and reactivity of nZVI mainly depends on properties such as particle size, surface chemistry and bulk composition. In order to ensure efficient remediation, it is crucial to accurately assess and understand the implications of these properties before deploying these materials into contaminated environments. Many analytical techniques are now available to determine these parameters and this paper provides a critical review of their usefulness and limitations for nZVI characterisation. These analytical techniques include microscopy and light scattering techniques for the determination of particle size, size distribution and aggregation state, and X-ray techniques for the characterisation of surface chemistry and bulk composition. Example characterisation data derived from commercial nZVI materials is used to further illustrate method strengths and limitations. Finally, some important challenges with respect to the characterisation of nZVI in groundwater samples are discussed.

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Section: Introductionmentioning

confidence: 99%

Analytical characterisation of nanoscale zero-valent iron: A methodological review

Chekli

Bayatsarmadi

Sekine

et al. 2016

Analytica Chimica Acta

101

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“…The changeless shape of quartz can be ascribed to the following speculations: a) the particle spacing is relatively large as they were prepared without pre-consolidation; b) the solute of the Pb-SiO2 is too simple. In other word, the roughness of soil particles may significantly change in practice considering the existence of various susceptive natural occurring organic matters, ions, and minerals that can be involved in the coprecipitation (Wen et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

Morphological and mineral features of nZVI-induced precipitation on quartz particles

Liu

Zhou

et al. 2021

Environmental Geotechnics

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“…Bilindiği üzere mevcut fosfat türleri sulu çözeltinin pH'ına bağlı olarak suda H2PO4 -, HPO4 -2 ve PO4 -3 gibi farklı iyonik formlarda bulunabilmektedir. pH değeri 2.1'den düşük olduğunda H3PO4, pH 2.1 ve 7.2 arasında olduğunda H2PO4 − , pH 7.2 ve 12.3 arasında olduğunda HPO4 -2 , pH 12.3'ten yüksek olduğunda PO4 -3 baskın olan tür olmaktadır [40]. Şekil 1a incelendiğinde, yüksek giderim verimlerinin yaklaşık pH 3.0-3.6 aralığında sağlandığı görülmektedir.…”

Section: Bulgular Ve Tartişmaunclassified

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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Removal of phosphate from aqueous solution using nanoscale zerovalent iron (nZVI)

Cited by 203 publications

References 42 publications

Analytical characterisation of nanoscale zero-valent iron: A methodological review

Analytical characterisation of nanoscale zero-valent iron: A methodological review

Morphological and mineral features of nZVI-induced precipitation on quartz particles

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

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