Growth, spectral, structural and mechanical properties of struvite crystal grown in presence of sodium fluoride

Suguna, K.; Thenmozhi, M.; Sekar, C.

doi:10.1007/s12034-012-0322-6

Cited by 40 publications

(27 citation statements)

References 16 publications

(15 reference statements)

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“…The bonds repeat continuously to form a three dimensional structure, which can be a perfect medium for crystal growth (Suguna et al, 2012).…”

Section: Preparation Of the Gelmentioning

confidence: 99%

“…Phosphate minerals, such as magnesium ammonium phosphate hexahydrate (MgNH4PO4.6H2O), mineralogically known as struvite, is one of the main components of the calculi. It was also reported that recurrence after treatment is relatively high (ElMahdy and Persad, 2014;Suguna et al, 2012;Chauhan, 2011;Miyaoka and Monga, 2009;Grohe et al, 2006).…”

Section: Introductionmentioning

confidence: 96%

“…The formation of urinary calculi is a serious clinical problem worldwide (Suguna et al, 2012). Phosphate minerals, such as magnesium ammonium phosphate hexahydrate (MgNH4PO4.6H2O), mineralogically known as struvite, is one of the main components of the calculi.…”

Section: Introductionmentioning

confidence: 99%

“…The urinary calculi (= urinary stones, renal stones or kidney stones) may arise due to chemical activities within the body (Suguna et al, 2012;Chauhan, 2011). The condition favourable for the formation of the stones includes high concentrations of calcium salts (Ca-oxalate and Ca-phosphate), infections of urinary tracts, pH, and a decrease in the body's natural ability to inhibit the formation of the crystals (Suguna et al, 2012;Rajendran and Keefe, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The condition favourable for the formation of the stones includes high concentrations of calcium salts (Ca-oxalate and Ca-phosphate), infections of urinary tracts, pH, and a decrease in the body's natural ability to inhibit the formation of the crystals (Suguna et al, 2012;Rajendran and Keefe, 2010). …”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Inhibition of Struvite Crystal Growth in the Presence of Herbal ExtractOrthosiphon AristatusBL.MIQ

Muryanto

Sutanti²,

Kasmiyatun

2016

MATEC Web of Conferences

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The formation of urinary stones is a serious problem worldwide. Struvite (MgNH4PO4.6H2O) is known as one of the main components of the stones. Traditionally, herbal extracts treatment is recommended. This paper discusses the effects of Orthosiphon aristatus Bl.Miq leaves extract (OA) on struvite crystals grown by diffusion gel method. After three weeks the crystals were separated from the gel, air dried and stored for characterisation. The crystals exhibit different morphologies depending upon the location of growth. It was found that OA caused the crystals to have noticeable surface defects, discolorisation and fragmentation. Also, OA (up to 5.0%) decreased the growth rate. XRD analysis confirms struvite crystallinity. Pure crystals and those grown with OA showed identical XRD pattern, indicating that the crystalline nature may be unaffected. For crystals with OA, FTIR spectrum shifted to higher wave numbers, implying that the various organic compounds in OA might be absorbed on the crystal surface. TG-DTA studies showed similar thermal behaviour for both pure crystals and those with OA. However, the later revealed lower endothermic temperature, indicating lower thermal stability. Fragmentation and lower thermal stability of struvite indicated that OA was a potent inhibitor of struvite and could be effective for urinary stone treatment.

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“…The bonds repeat continuously to form a three dimensional structure, which can be a perfect medium for crystal growth (Suguna et al, 2012).…”

Section: Preparation Of the Gelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Inhibition of Struvite Crystal Growth in the Presence of Herbal ExtractOrthosiphon AristatusBL.MIQ

Muryanto

Sutanti²,

Kasmiyatun

2016

MATEC Web of Conferences

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Waste cooking oil as an efficient solvent for the production of urea precursor ammonium carbamate from carbon dioxide

et al. 2020

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Carbon sequestration and utilization are currently gaining attention as they help to reduce the emission of greenhouse gases in the atmosphere. This study explores the possibility of using carbon dioxide as a feedstock for the production of ammonium carbamate, a precursor molecule for urea production. Waste cooking oil was used as the indispensable nonaqueous medium for the formation of pure ammonium carbamate. This makes the process completely ecofriendly and cost-effective. A continuous process of ammonium carbamate production at 20°C results in 88.86% consumption of carbon dioxide. The highest yield of ammonium carbamate was achieved at an NH 3 /CO 2 ratio of 2.5. A three-stage setup was also found to increase the yield of ammonium carbamate. The reusability of oil after each cycle was checked and it was found that the formation of the product is comparatively less compared to the previous cycle. Lower yield was observed when the same experiment was carried out with fresh oil (sunflower oil). The exit gas from the process was found to be rich in ammonia that can be further used for the production of struvite, a phosphate fertilizer.

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Crystallization of struvite‐K from pumpkin wastes

2021

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BACKGROUND: Use of slow-release fertilizers derived from biological sources is important in sustainable agricultural development. Struvite-K (KMgPO 4 •6H 2 O) is magnesium potassium phosphate mineral that has high potential for use as fertilizer in agriculture. Struvite-K is particularly suitable for slow-release fertilizer systems since struvite-K crystals are sparingly soluble in water. Seeds of pumpkin Cucurbita pepo L. are recovered and consumed as food, but the remaining pulp has no economic value.RESULTS: The present study evaluated the feasibility of struvite-K crystals recovery from pyrolysis products of pumpkin wastes. In the study C. pepo pulp was decomposed at high temperatures and potassium was extracted from the residue and then crystalized from the solution by addition of NaH 2 PO 4 •2H 2 O and MgCl 2 •6H 2 O salts. Struvite-K was characterized by Fouriertransform infrared (FTIR) spectroscopy, scanning electron microscopy-energy-dispersive X-ray (SEM-EDX) spectroscopy and X-ray diffraction (XRD) analysis. CONCLUSIONS:The study revealed pumpkin wastes can be evaluated as source of potassium and 80% of potassium could be recovered as struvite-K crystals, which have a potential use as a slow-release mineral fertilizer for sustainable agriculture operations.

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Growth, spectral, structural and mechanical properties of struvite crystal grown in presence of sodium fluoride

Cited by 40 publications

References 16 publications

Inhibition of Struvite Crystal Growth in the Presence of Herbal ExtractOrthosiphon AristatusBL.MIQ

Inhibition of Struvite Crystal Growth in the Presence of Herbal ExtractOrthosiphon AristatusBL.MIQ

Waste cooking oil as an efficient solvent for the production of urea precursor ammonium carbamate from carbon dioxide

Crystallization of struvite‐K from pumpkin wastes

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