Boonchom, Banjong
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Boonchom, Banjong
Alternative Name
BOONCHOM, Banjong
Boonchom, B.
Boonchom, And Banjong
Boonchoma, Banjong
Boomchom, Banjong
Main Affiliation
Email
banjong.bo@kmitl.ac.th
29 results
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Item type:Publication, Conversion of bivalve shells to monocalcium and tricalcium phosphates: An approach to recycle seafood wastes(2021-08-02); ; ; Laohavisuti, NongnuchThe search for sustainable resources remains a subject of global interest and the conversion of the abundantly available bivalve shell wastes to advanced materials is an intriguing method. By grinding, calcium carbonate (CaCO<inf>3</inf>) powder was obtained from each shell of bivalves (cockle, mussel, and oyster) as revealed by FTIR and XRD results. Each individual shell powder was reacted with H<inf>3</inf>PO<inf>4</inf> and H<inf>2</inf>O to prepare Ca(H<inf>2</inf>PO<inf>4</inf>)<inf>2</inf>·H<inf>2</inf>O giving an anorthic crystal structure. The calcination of the mixture of each shell powder and its produced Ca(H<inf>2</inf>PO<inf>4</inf>)<inf>2</inf>·H<inf>2</inf>O, at 900 °C for 3 h, resulted in rhombohedral crystal β-Ca<inf>3</inf>(PO<inf>4</inf>)<inf>2</inf> powder. The FTIR and XRD data of the CaCO<inf>3</inf>, Ca(H<inf>2</inf>PO<inf>4</inf>)<inf>2</inf>·H<inf>2</inf>O, and Ca<inf>3</inf>(PO<inf>4</inf>)<inf>2</inf> prepared from each shell powder are quite similar, showing no impurities. The thermal behaviors of CaCO<inf>3</inf> and Ca(H<inf>2</inf>PO<inf>4</inf>)<inf>2</inf>·H<inf>2</inf>O produced from each shell were slightly different. However, particle sizes and morphologies of the same products obtained from different shells were slightly different—but those are significantly different for the kind of the obtained products. Overall, the products (CaCO<inf>3</inf>, Ca(H<inf>2</inf>PO<inf>4</inf>)<inf>2</inf>·H<inf>2</inf>O, and Ca<inf>3</inf>(PO<inf>4</inf>)<inf>2</inf>) were obtained from the bivalve shell wastes by a rapidly simple, environmentally benign, and low-cost approach, which shows huge potential in many industries providing both economic and ecological benefits. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Influence of Organic Solvent on the Physicochemical Characteristics of Calcium Citrate Prepared from Mussel Shell Waste(2025-06-01); ; A green and mild chemical reaction of calcium citrate (CC) was successfully prepared from reactions between mussel shell waste and citric acid in the presence of acetone (AC), ethanol (Et), and isopropyl alcohol (IPA). All the synthesized CCs contained the same functional groups such as citrate (C<inf>6</inf>H<inf>5</inf>O<inf>7</inf><sup>3−</sup>), water (H<inf>2</inf>O), and calcium–oxygen (Ca–O). However, the differences in the spectra pointed out the differences in the crystal environment and structure of CCs. CC-AC and CC-IPA mainly crystallized in the monoclinic [Ca<inf>3</inf>(C<inf>6</inf>H<inf>5</inf>O<inf>7</inf>)<inf>2</inf>(H<inf>2</inf>O)<inf>2</inf>]·2H<inf>2</inf>O crystal system, whereas CC-Et mainly crystallized in the triclinic Ca<inf>3</inf>(C<inf>6</inf>H<inf>5</inf>O<inf>7</inf>)<inf>2</inf>∙(H<inf>2</inf>O)<inf>4</inf> structure. The molecular alignments of triclinic CC-Et were different from monoclinic CC-AC and CC-IPA, resulting in differences in thermal behaviors. Two dehydration steps were observed for the monoclinic CC-AC and CC-IPA, whereas the triclinic CC-Et showed a single dehydration process. The TG mass losses further demonstrated that anhydrous Ca<inf>3</inf>(C<inf>6</inf>H<inf>5</inf>O<inf>7</inf>)<inf>2</inf> phase, in addition to the Ca<inf>3</inf>(C<inf>6</inf>H<inf>5</inf>O<inf>7</inf>)<inf>2</inf>∙4H<inf>2</inf>O, was also observed for CC-AC and CC-IPA, whereas CC-Et contained a single Ca<inf>3</inf>(C<inf>6</inf>H<inf>5</inf>O<inf>7</inf>)<inf>2</inf>∙(H<inf>2</inf>O)<inf>4</inf> phase. The morphologies of CC-AC and CC-IPA also differed from that of CC-Et. The differences in some properties of the synthesized CCs could be attributed to the change in the supersaturation state of the reaction solution. Due to the superior polarity, ethanol is more compatible with citric acid. The presence of ethanol could suppress the supersaturation rate of the reaction solution, causing the modulation of the precipitation mechanisms and reducing the particle growth rate of CC-Et, thereby explaining the difference in vibrational, structural, thermal, and morphological characteristics of CC-Et, compared to CC-AC and CC-IPA. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Characterization, Kinetic Using Deconvolution Techniques and Thermodynamic Study of Synthetic MgHPO4·3H2O(2023-04-01); MgHPO<inf>4</inf>·3H<inf>2</inf>O was synthesized via a simple wet reaction and transformed to its final decomposed product, Mg<inf>2</inf>P<inf>2</inf>O<inf>7</inf> at 873 K. The thermal properties, vibrational modes of block units, and solid phases of the synthetic compounds have been investigated by TG/DTG/DTA, FTIR, and XRD techniques. The temperature dependence of thermodynamic properties estimated from the DSC data occurred in two regions (before and after the dehydration reaction) indicating a characteristic of the prepared MgHPO<inf>4</inf>·3H<inf>2</inf>O sample. The dehydration reactions of 3.5 mol of water molecules in the structure overlapped in the temperature of 363–823 K and showed the phase transition at 921 K as revealed by TG/DTG/DTA. The deconvolution technique using the newly modified co-mathematical functions was used to separate the overlapped dehydration steps in the DTG curve, which obtained the three steps. Only the first and second steps were estimated using kinetic triplet parameters (E<inf>a</inf>, A, and model), which indicate the single dehydration mechanism with the A<inf>1.25</inf> model and the multi-step of a parallel mechanism with the A<inf>1.6</inf> model, respectively. The data of kinetics and thermodynamics play key points in theoretical study, application development, and industrial production of magnesium phosphates as a theoretical basis. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Simple Rapid Production of Calcium Acetate Lactate from Scallop Shell Waste for Agricultural Application(2025-05-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Valorization of Mussel Shell Waste to Chitin, Chitosan, and Calcium Lactate for Bio-Green-Circular Management(2026-04-01); ; ; Punthipayanon, SirichetThis study presents a green bio-upcycling strategy for converting mussel shell biowaste into three value-added products: chitin, chitosan, and calcium lactate. Mussel shells were treated chemically with lactic acid during demineralization, yielding a solid fraction rich in chitin and a liquid fraction containing calcium and lactate ions. The solid fraction was sequentially purified by deproteinization and decolorization, then deacetylated to obtain chitosan, while the liquid fraction was evaporated to obtain calcium lactate. Notably, 2.37 g of raw chitin, 2.15 g of purified chitin, and 275.87 g of calcium lactate were obtained from 100 g of mussel shells, demonstrating the efficiency of the process. FTIR spectra revealed characteristic absorption bands corresponding to α-chitin and chitosan functional groups, while XRD patterns indicated the crystalline α-chitin structure and the formation of calcium lactate pentahydrate. TGA demonstrated the high thermal stability of chitin and chitosan and confirmed the presence of crystallization water in calcium lactate. In conclusion, these results confirmed the successful preparation of α-chitin, chitosan, and calcium lactate pentahydrate, with improved purity compared to previous studies. This approach highlights the potential of the green bio-upcycling process of mussel shell waste as a renewable source for the eco-friendly production of biopolymers and calcium salts, supporting sustainable waste management and the development of the Bio-Circular-Green (BCG) economy. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Microparticles of calcium carbonate CaCO3, calcium hydrogen phosphate hydrate CaHPO41.9H2O and tricalcium phosphate Ca3(PO4)2 prepared from golden apple snail shells (Pomacea canaliculata)(2020-03-01); ; The golden apple snail shell was mechanically milled to transform to 400 mesh sizes of calcium carbonate CaCO3. The obtained CaCO3 was reacted with phosphoric acid by a simple rapid reaction to prepare dicalcium phosphate hydrate CaHPO4<sup>.</sup>1.9H2O. Thermal transformation products of the as-synthesized CaCO3 and CaHPO4<sup>.</sup>1.9H2O samples occurred at above 750 <sup>o</sup>C indicating the temperature condition to synthesize tricalcium phosphate Ca3(PO4)2 by solid state route. The as-synthesized CaCO3 and CaHPO4 powders were well mixed in the mole ratio of 1:2, then calcined at 800 <sup>o</sup>C for 2 hrs. and the obtained product was Ca3(PO4)2. The XRD and FTIR results indicate that the as-prepared CaCO3, CaHPO4 and Ca3(PO4)2 samples without the presence of any phase impurities crystalize in orthorhombic of aragonite, anorthic, rhombohedral phases respectively, The SEM micrographs show nonuniform, wooden fiber-like, grainy rice-like and irregular and non-uniform shapes for the as-prepared CaCO3, CaHPO4 and Ca3(PO4)2 samples respectively. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A Numerical Simulation of the Kratom Plant Growth Model While Treated by a Specific Nutrient Using an Explicit Finite Difference Method(2025-01-01); Kratom refers to both Mitragyna speciosa, a tree native to Southeast Asia, and products manufactured from its leaves sold as herbal supplements. Kratom leaves contain a range of chemical compounds known as bioactive alkaloids, which have physiological effects. A mathematical model of the Kratom plant under a particular nutritional treatment will be provided in this research. Also, the methods for setting the initial condition and boundary condition will be presented. Also, as the plant grows, the solution's domain shifts every time. Techniques for adjusting the specific nutrient's physical parameters are also provided. With the use of an explicit finite difference method, the solutions are approximated. The specific nutritional concentrations are calculated for each height level. As shown, the specific nutrient will spread from the root to the apex of the trunk. The nutrient has the capacity to stimulate the growth of the Kratom. The specific nutrient concentration along the trunk may be measured using the proposed mathematical model as the Kratom plant grows each day. A proposed numerical model with a specific nutrient can be used to develop a precise model, such as a one-dimensional model of branches and foliage. It would be more captivating if the plant nutrients indicated here were researched for their ability to accelerate the growth of large or medium-sized Kratom plants. In conclusion, the study shows that calcium dihydrogen phosphate monohydrate may be useful as a growth promoter for Kratom plants and suggests a way to measure its effects quantitatively. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Low-Cost and Eco-Friendly Calcium Oxide Prepared via Thermal Decompositions of Calcium Carbonate and Calcium Acetate Precursors Derived from Waste Oyster Shells(2024-08-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Bio-green synthesis of calcium acetate from oyster shell waste at low cost and reducing the emission of greenhouse gases(2023-12-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effect of calcium phosphate on growth, pigment and secondary compound accumulation in Cannabis sativa L. callus(2026-05-01)