Fixed Bed Adsorption Study on Phosphate Removal Using Nanosized FeOOH‐Modified Anion Resin

Li, Nan; Ren, Jing; Zhao, Lin; Wang, Zhongliang

doi:10.1155/2013/736275

Cited by 12 publications

(10 citation statements)

References 25 publications

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“…The BDST model originally developed by Bohart and Adams was applied to represent the relationship between service time and bed depth. This model is based on the surface reaction rate theory and assumes that the rate of adsorption is proportional to the fraction of adsorption capacity remaining on the sorbent . It was reported that the BDST model was applicable to describe the initial part of the breakthrough curve, approximately just up to the breakthrough point or 10 to 50% of the saturation points.…”

Section: Resultsmentioning

confidence: 99%

Adsorption of phosphorus based on Hangjin clay granular ceramic from aqueous solution and sewage: Fixed‐bed column study

Chen

Wang

et al. 2017

Env Prog and Sustain Energy

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The aim of this study was to evaluate the potential use of the Hangjin clay ceramic adsorbent for phosphorus removal from aqueous solution and municipal sewage in column systems. The effect of several factors, including bed depth, initial phosphorus concentration, and flow rate was investigated at room temperature. As a result, the breakthrough time increased with increasing in the bed depth, whereas inverse relationship was observed with the initial phosphorus concentration and flow rate. Moreover, municipal sewage treatment results proved the effectiveness of the adsorbent in practical application and further demonstrated some co-existing ions in sewage had little effect on the continuous adsorption process. Adsorption models, which are the basis for the process design at a real scale, were used to estimate the characteristic parameters of columns. The dynamic adsorption kinetic data well agreed with the Adams-Bohart and Clark models. The Yoon-Nelson and BDST models could be successfully used to predict the breakthrough time. The observed maximum dynamic adsorption capacity of the ceramic adsorbent for phosphorus removal was 19.28 mg g 21 . The Hangjin clay granular ceramic could be used as a high-efficiency phosphorus adsorbent in the aspect of the municipal sewage treatment.

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Section: Resultsmentioning

confidence: 99%

Adsorption of phosphorus based on Hangjin clay granular ceramic from aqueous solution and sewage: Fixed‐bed column study

Chen

Wang

et al. 2017

Env Prog and Sustain Energy

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“…3− /g) as shown by the result of this study. Other studies using materials such as impregnated skin split waste [5], hybrid fibres [19], and synthetic materials [26] showed results within the range 66.4 to 220.8 mg PO 4 3− /g. Akaganeite also showed better results (51.8 to 71.5 mg PO 4…”

Section: Effect Of Particle Size On Adsorption Isothermmentioning

confidence: 93%

“…Several ferric hydroxide sizes below the usual GFH size range (1 mm) have been used as promising materials to increase the kinetics and adsorption capacity of phosphate in stirred batch tests, as it happens, for instance, in the case of activated carbon with micro-contaminants [22,23]. The procedures involved for size reduction of the adsorbent include sieving of GFH [24], grinding [1,17], or the synthesis and use of nano-sized materials [19,[24][25][26]. From these references, only one study was centered in the role of reduced size particles obtained from the same bulk GFH on the adsorption of phosphate (equilibrium and kinetics) [17].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Phosphate Adsorption Kinetics onto Ferric Hydroxide by Size Reduction

Martí

Jubany

Ribas

et al. 2021

Water

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Ball milling and ultra-sonication size reduction procedures were applied to granular ferric hydroxide (GFH) to obtain two micro-sized adsorbents. These two adsorbents and GFH were investigated to improve the removal of phosphates from water. The size reduction procedures, using the milling method, allowed a reduction of size from 0.5–2 mm to 0.1–2 µm and total disaggregation of the GFH structure. Using an ultra-sonication method yielded a final size of 1.9–50.3 µm with partial disaggregation. The Langmuir model correlated well with the isotherms obtained in batch equilibrium tests for the three adsorbents. The maximum adsorption capacity (qmax) for the milled adsorbent was lower than GFH, but using ultra-sonication was not different from GFH. The equilibrium adsorption of two wastewater samples with phosphate and other anions onto the GFH corresponded well with the expected removal, showing that potential interferences in the isotherms were not important. Batch kinetics tests indicated that the pseudo second-order model fitted the data. Long-term adsorption capacity in kinetics (qe) showed the same trend described for qmax. The application of milling and ultra-sonication methods showed 3.5- and 5.6-fold increases of the kinetic constant (k2) versus the GFH value, respectively. These results showed that ultra-sonication is a very good procedure to increase the adsorption rate of phosphate, maintaining qe and increasing k2.

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“…Natural polysaccharide chitosan, a derivative of chitin [8][9] has been known for its unique properties due to the existence of high content of amino and hydroxyl functional groups in its molecules that contribute in the process of adsorption [10]. Moreover, chitosan is a nontoxic, biodegradable, and biocompatible polymer, which can be used as a wound dressing, tissue engineering, and drug delivery systems [11].…”

Section: Introductionmentioning

confidence: 99%

Fixed-Bed Column Studies for the Removal of Congo Red Using <i>Simmondsia chinesis</i> (Jojoba) and Coated with Chitosan

et al. 2018

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Fixed Bed Adsorption Study on Phosphate Removal Using Nanosized FeOOH‐Modified Anion Resin

Cited by 12 publications

References 25 publications

Adsorption of phosphorus based on Hangjin clay granular ceramic from aqueous solution and sewage: Fixed‐bed column study

Adsorption of phosphorus based on Hangjin clay granular ceramic from aqueous solution and sewage: Fixed‐bed column study

Improvement of Phosphate Adsorption Kinetics onto Ferric Hydroxide by Size Reduction

Fixed-Bed Column Studies for the Removal of Congo Red Using <i>Simmondsia chinesis</i> (Jojoba) and Coated with Chitosan

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