Preparation, characterization serpentine-loaded hydroxyapatite and its simultaneous removal performance for fluoride, iron and manganese

Li, Xilin; Yu, Xiaowan; Liu, Ling; Jiao, Yang; Liu, Siyuan; Zhang, Tianyi

doi:10.1039/d1ra02028e

Cited by 21 publications

(9 citation statements)

References 42 publications

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“…This might be due to the reduction of functional groups in BBP adsorbent surface and incomplete desorption during the regeneration process. Long-term elution can destroy the binding site or leave manganese ions in the adsorbent (Li et al 2021).…”

Section: Desorption Studiesmentioning

confidence: 99%

Chemical Treatment of Banana Blossom Peels Adsorbent as New Approach for Manganese Removal: Isotherm and Kinetic Studies

Rudi

Apandi

Muhamad

et al. 2022

Preprint

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The current study determined the potential of chemical modified banana blossom peels (BBP) as an adsorbent for the removal of manganese (Mn) from water. The BBP adsorbent was characterized using Field Emission Scanning Electron Microscopy (FESEM), Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD) and Brunauer-Emmet Teller (BET). The effects of the solution pH, adsorbent dosage, initial manganese concentration and contact time towards the adsorption process were evaluated in batch adsorption studies. FESEM analysis displayed a deeper dents and rough internal surface that cater for deposition of Mn, while EDX analysis detected the presence of C, O, and Na elements (before adsorption); C, O and Mn (after adsorption). FTIR analysis revealed presence hydroxyl, carboxylic and amino groups which are responsible for the adsorption process. Moreover, XRD analysis showed that the structure of the BBP adsorbent is amorphous. The BET surface area of BBP adsorbent was 2.12 m2/g with the total pore volume of 0.0139 cm3/g and average pore diameter of 64.35 nm. The BBP adsorbent showed promising results of 98% Mn removal at optimum condition of pH 7, 0.5 g (adsorbent dosage), 10 mg/L of Mn initial concentration in 150 min contact time. Adsorption isotherm data were fitted with linear Langmuir and linear Freundlich model best fit with R2 > 0.98, while the adsorption process take place as a function of chemisorption process as determined using linear pseudo-second order kinetics. The maximum desorption rate of Mn was achieved at 92% in the first cycle with recovery rate of 94.18% Mn removal within 30 min using 0.1 M HCl. These findings confirmed the potential BBP as a natural adsorbent for Mn removal as an effective treatment option for enhancing wastewater quality.

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Section: Desorption Studiesmentioning

confidence: 99%

Chemical Treatment of Banana Blossom Peels Adsorbent as New Approach for Manganese Removal: Isotherm and Kinetic Studies

Rudi

Apandi

Muhamad

et al. 2022

Preprint

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“…Our research group previously studied a new type of adsorbent, Srp/HAP (Li et al 2021a(Li et al , 2021b, whose F À , Fe 2þ , and Mn 2þ removal rates reached 98.6%, 99.9%, and 99.8%, respectively. Although the removal effect of Csrp is slightly lower than that of Srp/HAP, the preparation process of Csrp is simple, and the preparation cost is low.…”

Section: Effect Of the Reaction Temperaturementioning

confidence: 99%

“…Excessive fluoride, iron and manganese in groundwater have an impact on the health of residents, and there are problems related to high levels of fluoride, iron and manganese in groundwater both at home and abroad (Li et al 2021a(Li et al , 2021b.…”

Section: Introductionmentioning

confidence: 99%

The performance of calcined serpentine to simultaneously remove fluoride, iron and manganese

Wang

Liu

et al. 2021

Water Supply

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To solve the problem of high fluoride, iron and manganese concentrations in groundwater, serpentine (Srp) was modified by metal salt impregnation, acid-base activation and calcination, and the effects of these three modifications on removal performance of Srp were compared. Specifically, the effects of the calcined serpentine (Csrp) dose, reaction time, pH, and temperature on the removal performance of F−, Fe2+ and Mn2+ on Csrp were analysed. An isothermal adsorption model and adsorption kinetic equation were established and confirmed through SEM, EDS, XRD and FTIR spectroscopy to analyse the mechanism of removing F−, Fe2+ and Mn2+ by Csrp. The results show that when 3 g/L Csrp was used to treat water samples with 5 mg/L F−, 20 mg/L Fe2+, and 5 mg/L Mn2+ (pH of 6, reaction temperature of 35 °C, and time of 150 min), the removal rates of F−, Fe2+, and Mn2+ were 94.3%, 99.0%, 98.9%, respectively. The adsorption of F−, Fe2+ and Mn2+ on Csrp follows the quasi-second-order kinetic equation and Langmuir isotherm adsorption model. After 5 cycles of regeneration of Csrp, Csrp can still maintain good properties of fluoride,iron and manganese removal.

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“…Mining leads to the dissolution of minerals containing iron and manganese in rocks, the discharge of iron-and manganese-contaminates industrial wastewater and the infiltration of leaching water from the ore-dressing waste slag accumulation site into the underground well, which leads to high concentrations of iron and manganese in the groundwater of the mining area [1]. This mine wastewater with high concentrations of iron and manganese is directly discharged without treatment, which poses a serious threat to human health and the environment, especially in the vast water-deficient mining areas where groundwater is the source of drinking water [2].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Adsorption Properties of Insoluble Humic Acid/Tourmaline Composite Particles for Iron and Manganese in Mine Wastewater

Liu

et al. 2022

Materials

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Iron- and manganese-contaminated mine water is widespread around the world, and economical and efficient remediation has become a priority. Insoluble humic acid/tourmaline composite particles (IHA/TM) were prepared by combining inorganic tourmaline (TM) with the natural organic polymer humic acid (HA), and the effects of different calcination temperatures and calcination times of TM and IHA on the adsorption of Fe2+ and Mn2+ were analyzed. Based on the microscopic characterization of Scanning electron microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Brunnauer–Emmet–Teller (BET), X-ray diffractometer (XRD) and Fourier transform infrared (FTIR), the simultaneous adsorption performance of IHA/TM on Fe2+ and Mn2+ was studied through dynamic adsorption tests, and a dynamic adsorption model was established. Adsorption regeneration experiments were carried out to further investigate the effectiveness of the composite particles in practical applications. The results show that, when the calcination temperature was 330 °C and the calcination time was 90 min, the removal rates of iron and manganese by the IHA/TM composite particles reached 99.85% and 99.51%, respectively. The curves for penetration of Fe2+ and Mn2+ ions into the IHA/TM composite particles were affected by the bed height, flow rate and influent concentration. Decreasing the flow rate, decreasing the influent concentration, or increasing the bed height prolonged the operation time of the dynamic column. If the bed height was too low, the penetration point was reached before the expected treatment was achieved, and when the bed height was too high, the removal of Fe2+ and Mn2+ was slow, and the utilization rate of the adsorbent was also reduced. If the flow rate was too low, longitudinal remixing easily occurred in the column. However, when the flow rate was too high, the speed of Fe2+ and Mn2+ ions passing through the adsorption layer increased, which reduced the total amount of adsorption. The increase in influent concentration not only reduces the removal rate, but also greatly shortens the total operation time of the dynamic column and reduces the treatment water. The dynamic process for the adsorption of Fe2+ and Mn2+ by IHA/TM was fitted best by the Thomas model. The adsorption column was continuously regenerated five times, and the results show that the IHA/TM composite particles were suitable for iron and manganese removal from mine wastewater. The research results will provide a reference for the effectiveness of the IHA/TM composite particles in practical applications.

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Preparation, characterization serpentine-loaded hydroxyapatite and its simultaneous removal performance for fluoride, iron and manganese

Abstract: A new adsorbent Srp/HAP for simultaneous removal of fluoride, iron and manganese was prepared, characterized and analyzed.

Cited by 21 publications

References 42 publications

Chemical Treatment of Banana Blossom Peels Adsorbent as New Approach for Manganese Removal: Isotherm and Kinetic Studies

Chemical Treatment of Banana Blossom Peels Adsorbent as New Approach for Manganese Removal: Isotherm and Kinetic Studies

The performance of calcined serpentine to simultaneously remove fluoride, iron and manganese

Dynamic Adsorption Properties of Insoluble Humic Acid/Tourmaline Composite Particles for Iron and Manganese in Mine Wastewater

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