Preparation and characterization of zirconia-loaded lignocellulosic butanol residue as a biosorbent for phosphate removal from aqueous solution

Zong, Enmin; Liu, Xiaohuan; Jiang, Jiulei; Fu, Shenyuan; Chu, Fuxiang

doi:10.1016/j.apsusc.2016.06.107

Cited by 74 publications

(43 citation statements)

References 68 publications

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“…Figure shows the effect of thermostat temperature on the removal capacity toward phosphate under the investigated conditions; the experiments were performed at 298, 303, and 308 K for three MgO samples. Figure A shows the effect of temperature for MgO‐C, Figure B for MgO‐5, and Figure C for MgO‐12 in which removal capacity increased with the increase of thermostat temperature indicating the endothermic nature of MgO material toward phosphate adsorption which was similar to previously reported result for phosphate removal . This also shows that the phosphate adsorption is more favorable at high temperatures.…”

Section: Resultssupporting

confidence: 85%

Synthesis of 2D Magnesium Oxide Nanosheets: A Potential Material for Phosphate Removal

Ahmed

Iqbal

2018

Global Challenges

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Phosphate ions are responsible for eutrophication in drinking and wastewater, so it is necessary to limit the phosphate concentration in water bodies to limit the eutrophication problem. Porous magnesium oxide (MgO) nanosheets are synthesized at room temperature by simple precipitation and calcination. The synthesized material is characterized by various techniques. The sheet‐like MgO and commercial MgO are evaluated by the batch adsorption test. The synthesized material has an efficient adsorption efficiency of 95% at pH 5 as compared with commercial MgO, having a removal efficiency of 24% under the same investigated conditions. The synthesized MgO can be an efficient adsorbent material to overcome the eutrophication problem of the waste/domestic water.

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Section: Resultssupporting

confidence: 85%

Synthesis of 2D Magnesium Oxide Nanosheets: A Potential Material for Phosphate Removal

Ahmed

Iqbal

2018

Global Challenges

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“…Li et al reported that the maximum phosphate adsorption capacity of acid‐modified fly ash and palygorskite was 13.3 and 10.5 mg P/g, respectively, at pH 5.3 . Zong et al pointed out that the phosphate adsorption capacity was 8.8 mg P/g for zirconia‐loaded lignocellulosic butanol residue at pH 6.0 . It was also reported that the phosphate adsorption for SDS‐based magnetite was 2.5 mg P/g at pH 5.0 …”

Section: Introductionmentioning

confidence: 99%

Phosphate uptake behavior and mechanism analysis of facilely synthesized nanocrystalline Zn‐Fe layered double hydroxide with chloride intercalation

Yang

Liu

Lǚ

et al. 2018

Surface & Interface Analysis

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Zn-Fe layered double hydroxide with chloride intercalation (ZFCL) was synthesized by a coprecipitation method at room temperature. ZFCL was characterized by N 2 adsorptiondesorption isotherms, X-ray diffraction, scanning electron microscope, Zeta-sizer analyzer, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. The results showed that ZFCL had large surface area and layered structure. The maximum adsorption capacity of ZFCL was 150.6 mg/g at 25°C. That was higher than most other adsorbent which were reported. The kinetic data were described better by the pseudo-second-order adsorption kinetic rate model. The adsorption isotherm on the adsorbent was described by Langmuir, Freundlich, and Sips models at pH 6 and followed the fitting order: Sips >Freundlich>Langmuir. Thermodynamic analyses indicated that the phosphate adsorption on ZFCL was endothermic and spontaneous in nature. The sequence of coexisting cations and anions competing with phosphate was Ca 2+ > Mg 2+ > Na + and SO 4 2− > NO 3 − > Cl − . ZFCL can be regenerated by the sequential use of NaOH and ZnCl 2 . The adsorption capacity remained high as 108.6 mg/g after regeneration of 3 times. The results of zeta potential, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy analyses indicated that the phosphate adsorption mechanisms involved ion exchange, Zn 3 (PO 4 ) 2 precipitation, and the formation of inner-sphere complex via replacement of surface hydroxyl groups by phosphate.

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“…Furthermore, a high‐resolution XPS scan was employed to analyze the bonding types of O on the ceramsite surface before and after fluoride adsorption. As shown in Figs (c) and 9(d), the O 1s spectrum could be divided into three overlapped peaks, namely M‐O (532.0 eV), M‐OH (532.5 eV) and adsorbed water (533.1 eV) . After fluoride adsorption, the relative area ratio for the peak attributed to Al‐OH increased from 27.39 to 40.06%, whereas the relative area ratio for the peak of Al‐H 2 O decreased from 35.20 to 18.25%.…”

Section: Resultsmentioning

confidence: 89%

Volcanic rock‐based ceramsite adsorbent for highly selective fluoride removal: function optimization and mechanism

Chao

Zhao

Song

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: While various granular adsorbents have been studied for fluoride removal from water, this study focuses on the optimization of mixture proportions of volcanic rock, bentonite, corn starch and aluminum sulfate using a four-component simplex-centroid mixture design (SCMD) method to achieve preferable fluoride removal ratio and ceramsite mechanical strength. To illustrate the adsorption mechanism, a series of experiments, including adsorption isotherms, adsorption kinetics and effects of pH value and co-existing anions, was carried out. RESULTS: The synthesized adsorbent was mesoporous with 77.82% pore size distribution in the range 1.70-38.80 nm by detailed physicochemical characterization. A stable fluoride removal ratio (87.5%) was obtained in the wide pH range of 4.0-11.0, and the adsorption capacity was 10.17 mg g −1 at 298 K. The adsorbent remained high selectivity for F − in the presence of sulfate (SO 4 2− ), chloride (Cl − ) and nitrate (NO 3 − ), while carbonate (HCO 3 − ) posed a slight adverse effect on F − adsorption due to ion competition. This adsorption process was well fitted with the pseudo-second-order kinetic model and the Freundlich isotherm model. Electrostatic attraction and M + -H 2 O and M + -F ligand exchange were dominant in the adsorption mechanisms. CONCLUSION: The synthesized ceramsite adsorbent will be competitive in the application for F − removal from aquatic environments.

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Preparation and characterization of zirconia-loaded lignocellulosic butanol residue as a biosorbent for phosphate removal from aqueous solution

Cited by 74 publications

References 68 publications

Synthesis of 2D Magnesium Oxide Nanosheets: A Potential Material for Phosphate Removal

Synthesis of 2D Magnesium Oxide Nanosheets: A Potential Material for Phosphate Removal

Phosphate uptake behavior and mechanism analysis of facilely synthesized nanocrystalline Zn‐Fe layered double hydroxide with chloride intercalation

Volcanic rock‐based ceramsite adsorbent for highly selective fluoride removal: function optimization and mechanism

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