Phosphorus removal from aqueous solutions using a synthesized adsorbent prepared from mineralized refuse and sewage sludge

Chen, Kaining; Zhao, Ke; Zhang, Houhu; Sun, Qinfang; Wu, Zhansheng; Zhou, Yongmin; Zhong, Yongchao; Fan, Ke

doi:10.1080/09593330.2012.758659

Cited by 22 publications

(10 citation statements)

References 33 publications

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“…In this case, the sorption capacity of P reached 0.512 mg/g. Our sorption capacity values were mostly in agreement with the values reported in related studies by Chen et al [31] and Jiang et al [32]. Taken together, on the basis of these findings, it can be concluded that straetlingite-based sorbents are suitable for the removal of NH 4 + from aqueous solutions, and especially from wastewater in which P is present.…”

Section: The Sorption Of Nh 4 + Ions By Straetlingite-based Sorbents In Wastewater From An Open Recirculation African Catfish Farming Syssupporting

confidence: 92%

Preparation of Sorbents Containing Straetlingite Phase from Zeolitic By-Product and Their Performance for Ammonium Ion Removal

et al. 2021

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In this study, straetlingite-based sorbents were used for NH4+ ion removal from a synthetic aqueous solution and from the wastewater of an open recirculation African catfish farming system. This study was performed using column experiments with four different filtration rates (2, 5, 10, and 15 mL/min). It was determined that breakthrough points and sorption capacity could be affected by several parameters such as flow rate and mineral composition of sorption materials. In the synthetic aqueous solution, NH4+ removal reached the highest sorption capacity, i.e., 0.341 mg/g with the S30 sorbent at a filtration rate of 10 mL/min and an initial concentration of 10 mg/L of NH4+ ions. It is important to emphasize that, in this case, the Ce/C0 ratio of 0.9 was not reached after 420 min of sorption. It was also determined that the NH4+ sorption capacity was influenced by phosphorus. In the wastewater, the NH4+ sorption capacity was almost seven times lower than that in the synthetic aqueous solution. However, it should be highlighted that the P sorption capacity reached 0.512 mg/g. According to these results, it can be concluded that straetlingite-based sorbents can be used for NH4+ ion removal from a synthetic aqueous solution, as well as for both NH4+ and P removal from industrial wastewater. In the wastewater, a significantly higher sorption capacity of the investigated sorbents was detected for P than for NH4+.

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Section: The Sorption Of Nh 4 + Ions By Straetlingite-based Sorbents In Wastewater From An Open Recirculation African Catfish Farming Syssupporting

confidence: 92%

Preparation of Sorbents Containing Straetlingite Phase from Zeolitic By-Product and Their Performance for Ammonium Ion Removal

et al. 2021

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“…However, Saltalı et al reported that the optimum NH 4 + -N remove efficiency was achieved at pH 8[31]. A favourable range of pH 4–8 for PO 4 3− -P remove by La/Al-modified zeolite was observed by Meng, while the PO 4 3− -P remove efficiency incresed with the decrease of pH varied from 3.0–10.0[32,33]. The inconsistency in the optimal pH may be attributed to the differences in the chemical compositions of the zeolites tested.…”

Section: Resultsmentioning

confidence: 99%

Study on the adsorption of nitrogen and phosphorus from biogas slurry by NaCl-modified zeolite

Cheng

et al. 2017

PLoS ONE

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A NaCl-modified zeolite was used to simultaneously remove nitrogen and phosphate from biogas slurry. The effect of pH, contact time and dosage of absorbants on the removal efficiency of nitrogen and phosphate were studied. The results showed that the highest removal efficiency of NH4+-N (92.13%) and PO43−-P (90.3%) were achieved at pH 8. While the zeolite doses ranged from 0.5 to 5 g/100 ml, NH4+-N and PO43−-P removal efficiencies ranged from 5.19% to 94.94% and 72.16% to 91.63% respectively. The adsorption isotherms of N and P removal with NaCl-modified zeolite were well described by Langmuir models, suggesting the homogeneous sorption mechanisms. While through intra-particle diffusion model to analyze the influence of contact time, it showed that the adsorption process of NH4+-N and PO43−-P followed the second step of intra-particle diffusion model. The surface diffusion adsorption step was very fast which was finished in a short time.

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“…described a decrease of phosphate adsorption capacity from pH 3 to pH 10 when using zeolite as the adsorbent. Some studies on the phosphate adsorption capacity of adsorbents with surface charges like those of zeolite also reported similar phenomena 54 . The removal of phosphate using iron oxide nanoflakes attained the maximum phosphate adsorption efficiency at pH < 6.3 (pH pzc ) 56 .…”

Section: Resultsmentioning

confidence: 65%

“…At pH < pH pzc , zeolite NaP1 and phosphate ions are differently charged. Electrostatic interactions between NaP1 surface and phosphate ions easily occurred, enhancing the adsorption capacity of zeolite 54 . The surface of zeolite NaP1 carried a more negative charge at pH > pH pzc , resulting in a hindered adsorption ability for anions 33,55 …”

Section: Resultsmentioning

confidence: 99%

Evaluation of the potential removal of phosphate using rice husk ash‐derived zeolite NaP1

Tran‐Nguyen

Nguyen

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUND Zeolite NaP1 with high crystalline intensity and good shape has been synthesized by utilizing rice husk ash. Several factors related to the formation of zeolite, such as mixing ratios, aging time, and reaction time, were investigated. Furthermore, the potential phosphate adsorption of the optimal synthesized zeolite was evaluated. RESULTS Under the optimal conditions (SiO2/Al2O3 molar ratio = 4.0, NaOH concentration = 1.5 M, aging time = 12 h, and reaction time = 8 h), the surface area and pore diameter of the zeolite NaP1 obtained were 50 m2 g−1 and 40.77 Å, respectively. By varying the aging and reaction times, zeolite NaP1 with different surface areas could be created. Specifically, reducing the aging time and reaction time result in zeolite NaP1 with a lower surface area. The adsorption efficiency and adsorption capacity of the optimal synthesized zeolite NaP1 were 38.67% and 19.97 mg g−1, respectively, at pH 6.0, with an initial phosphate concentration of 100 mg L−1, an adsorbent dosage of 2 g L−1, and a contact time of 120 min. The data are well described under the Temkin and Redlich‐Peterson models, with the correlation coefficients of 0.991 and 0.995, respectively. The maximum adsorption capacity of the Langmuir model reached 19.053 mg g−1. CONCLUSION The main contribution of this work is the direct use of rice husk ash without pretreatment to generate high crystalline zeolite NaP1 in a shorter time. The phosphate ion removal efficiency by zeolite NaP1 may be further improved by functionalizing zeolite surfaces and expanding its other applications. © 2023 Society of Chemical Industry (SCI).

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Phosphorus removal from aqueous solutions using a synthesized adsorbent prepared from mineralized refuse and sewage sludge

Cited by 22 publications

References 33 publications

Preparation of Sorbents Containing Straetlingite Phase from Zeolitic By-Product and Their Performance for Ammonium Ion Removal

Preparation of Sorbents Containing Straetlingite Phase from Zeolitic By-Product and Their Performance for Ammonium Ion Removal

Study on the adsorption of nitrogen and phosphorus from biogas slurry by NaCl-modified zeolite

Evaluation of the potential removal of phosphate using rice husk ash‐derived zeolite NaP1

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