Defluoridation with Locally Produced Thai Bone Char

Mutchimadilok, Yothin; Smittakorn, Sunisa; Mongkolnchai-arunya, Surat; Durnford, Deanna S.

doi:10.1155/2014/483609

Cited by 7 publications

(6 citation statements)

References 36 publications

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“…This means that uses of BBs to VNBC product have a good efficiently economic in synthesis process. In addition, the VNBC products are charred bone does not add color, taste or smell to the water which it is in line with bone char products in previous experiments [15,22,23,28,29]. This is able to help us having a confident method in VNBC synthesis, also potential applications of product in next time research.…”

Section: The Experiments On Burned Temperature Effects To + Bc Synthesissupporting

confidence: 75%

“…Many previous studies have been reported during the last ten years to find the low-cost, and efficient adsorbents for the removal of metal ions or color compounds in wastewater [16][17][18][19][20]. Actually, bone char has been successfully synthesized and used for fluoride removal in Tanzania and Thailand [21,22]. The effectiveness of bone char as an adsorbent has been performed using batch experiments with contained heavy metal ions and color solutions under different conditions, for example, variable pH, temperature, chemical and thermal activation, adsorbent dosage [17,18,23].…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies have used bone char to adsorb radioisotopes of antimony and europium ions from radioactive wastes. Researchers claimed that sorption is due to cation exchange of metal ions onto hydroxyapatite [14,16,[22][23][24][25]. Therefore, the goal of this study is to find the process of VNBC synthesis from bovine bone waste.…”

Section: Introductionmentioning

confidence: 99%

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The Study of Vietnamese Bonechar Synthesis and its Applications in Removal Organic Color

Nguyen¹,

Cong²,

Nhat

2019

AJAS

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Biochar was synthesized from two material sources such as animal waste or plant waste. In this work, biochar was synthesized going from bovine bone waste at Vietnam country, called as Vietnamese bone char (VNBC). Many steps of process to VNBC synthesis, and its surface characteristics were investigated, respectively. The applications of VNBC being as adsorbents were examined then. The results of synthesis process were obtained the VNBC product sample with optimal condition to be at temperature of 650 oC, corresponding to 120 minutes. The analysis on surface properties of VNBC indicated that the specific surface area were 120.315 m2/g, with pore diameter as 87.48 Ã… measured by BJH (Barrett,Â JoynerÂ andÂ Halenda) method. The surface morphology with the particle size measured by SEM (Scanning Electronic Spectroscopy) method was 70 nm. The composition compounds of VNBC contained calcium carbonate-hydroxyl apatite with the formula was Ca10(PO4)5.65(CO3)0.64(OH)3.45 measured by FT-IR (Fourier Transform Infrared Spectroscopy) and XRD (X-Ray Diffraction Spectroscopy) methods, respectively. In application, VNBC uses at optimal condition as an adsorbent to remove the organic color solutions for instance KMnO4 and methylene blue (MB) were considered. The results of VNBC adsorbent to remove the colored solutions measured by UV/VIS (Ultraviolet Visible spectroscopy) method are obtained with adsorption capacity of KMnO4 as from 33.51 to 46.22 mg color/g BC, and MB from 12.1 to 15.04 mg color/g BC, respectively. These results shown that VNBC were able to use making a potential adsorbent in the treatment of wastewater contained organic color in industry.

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Section: The Experiments On Burned Temperature Effects To + Bc Synthesissupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

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The Study of Vietnamese Bonechar Synthesis and its Applications in Removal Organic Color

Nguyen¹,

Cong²,

Nhat

2019

AJAS

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“…The Langmuir adsorption capacity of 0.841-1.18 mm size, bone char was 0.243 mg/g with co-efficient value R 2 =0.984. Langmuir isotherm fitted well in comparison to Freundlich isotherm [60]. Teresaka et al (2014) studied the removal of fluoride and methylene blue (MB) by bone char prepared at different temperature range.…”

Section: Defluoridation By Bone Char and Allied Materialsmentioning

confidence: 98%

Fluoride Removal from Water By Calcium Materials: A State-Of-The-Art Review

Waghmare¹,

Arfin²,

Marg³

2015

IJIRSET

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The current manuscript reviews show about adequacy of various materials based on calcium for removal regarding fluoride through drinking water and industrial waste water. Fluoride is really a conscientious and nonbiodegradable toxin in which aggregates inside the earth, plants, untamed lifestyle and inside people. Like this, understanding regarding it's evacuated, utilizing best strategy together with ideal efficiency is required. For that enlargement regarding attributes, upgrade within the sizes to modify the particular interest regarding reliance for calcium, the primary and fundamental technological improvement are already essential finished through the use of calcium base absorbent for different application inside remedy regarding waste water. On this content, the particular review associated with the latest progress on the modification of calcium based adsorbent to collect in order to enhance the solubility and application. It exhibits the basic factor, for example, type and concentration of initiator, temperature and time are responsible for affecting the calcium based absorbent. The calcium and its subsidiaries have bunches of abilities for the procedure of defloration, so it is likewise anticipated to great hotspot for tossing from water and waste water as too. A recovery strategy was proposed to reuse the adsorbent for better economy of the procedure. In the current review, the different characteristic of calcium based absorbent, for example, preparation, application, kinetic studies impacts have been advanced for further viewing.

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“…However, Crocus sativus and modified sludge presented the removal efficiency in the range of 80-85% when 1-10 mg/L fluoride impurities were tested [26]. A vast literature has been reported on the use of bone char for fluoride removal [27][28][29][30]. The presence of hydroxyapatite groups in bone char is effective in removing the fluoride impurities by ion exchange and electrostatic interaction mechanism.…”

Section: Langmuir and Freundlich Adsorption Isotherm Modelsmentioning

confidence: 99%

Study the Use of Activated Carbon and Bone Char on the Performance of Gravity Sand-Bag Water Filter

Fung

Johnson

et al. 2021

Membranes

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In this study, granulated activated charcoal (GAC) and bio charcoal (BC) is used as a filler in P3 biosand bag filter to study their filtration performance against a range of fluoride impurities from 1–1400 mg/L. A set of experiments are done to analyze the filtration efficiency of the sandbag filter against fluoride impurities after incorporating different amounts (e.g., 0.2, 2 kg) and a combination of GAC and BC. A combination of filler GAC and BC (1 kg each) have exhibited excellent results with 100% fluoride removal efficiency against 5 mg/L fluoride impurities for an entire experimental time of 165 min. It is because of the synergetic effect of adsorption caused by the high surface area (739 m2/g) of GAC and hydroxyapatite groups in BC. The data from remediation experiments using individual GAC and BC are fitted into the Langmuir and Freundlich Isotherm Models to check their adsorption mechanism and determine GAC and BC’s maximum adsorption capacity (Qm). The remediation data for both GAC and BC have shown the better fitting to the Langmuir Isotherm Model with a high R2 value of 0.994 and 0.970, respectively, showing the excellent conformity with monolayer adsorption. While the GAC and BC have presented negative Kf values of −1.08 and −0.72, respectively, for Freundlich Model, showing the non-conformity to multilayer adsorption. The Qm values obtained from Langmuir Model for GAC is 6.23 mg/g, and for BC, it is 9.13 mg/g. The pH study on adsorption efficiency of individual GAC and BC against 5 mg/L of fluoride impurities indicates the decrease in removal efficiency with an increase in pH from 3 to 9. For example, BC has shown removal efficiency of 99.8% at pH 3 and 99.5% at pH 9, while GAC has exhibited removal efficiency of 96.1% at pH 3 and 95.9% at pH 9. Importantly, this study presents the significance of the synergetic application of GAC and BC in the filters, where GAC and BC are different in their origin, functionalities, and surface characteristics.

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Defluoridation with Locally Produced Thai Bone Char

Cited by 7 publications

References 36 publications

The Study of Vietnamese Bonechar Synthesis and its Applications in Removal Organic Color

The Study of Vietnamese Bonechar Synthesis and its Applications in Removal Organic Color

Fluoride Removal from Water By Calcium Materials: A State-Of-The-Art Review

Study the Use of Activated Carbon and Bone Char on the Performance of Gravity Sand-Bag Water Filter

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