Kinetics and morphology analysis of struvite precipitated from aqueous solution under the influence of heavy metals: Cu2+, Pb2+, Zn2+

Perwitasari, Dyah Suci; Muryanto, S.; Jamari, J.; Bayuseno, A.P.

doi:10.1016/j.jece.2017.11.052

Cited by 34 publications

(8 citation statements)

References 34 publications

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“…In real wastewater as a process feed source, TSS, organic matter and calcium have been observed to present the most difficulties for effective struvite precipitation interfering with both crystal structure and pelletization [13,22,29]. Similarly, negative influence of heavy metals (HMs) was observed by Perwitasari et al [21], yet the sufficiently high HMs contamination occur less frequently. The microscopic image inspection has revealed cracks and pores on the surface of the obtained struvite crystals, indicating the impact of TSS and carbon content in the non-filtrated digestate [23].…”

Section: Resultsmentioning

confidence: 99%

“…The microscopic image inspection has revealed cracks and pores on the surface of the obtained struvite crystals, indicating the impact of TSS and carbon content in the non-filtrated digestate [23]. High concentration of soluble inert compounds, including persistent organic species can be linked to the thermal hydrolysis applied before the struvite precipitation reactor [21]. However, further research in needed to fully evaluate the impact of coupling thermal hydrolysis [19] and struvite precipitation.…”

Section: Resultsmentioning

confidence: 99%

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Morphology and Elemental Composition of Product Obtained from Struvite Fluidized Bed Reactor

Bydałek

Kula

Mąkinia

2018

Civil and Environmental Engineering Reports

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Phosphorus scarcity is no longer a distant future, therefore the idea of phosphoru recovery is currently widely adopted and developed. Technologies based on the struvite precipitation are consider to address the future P challenges in the optimum way. This paper presents the results of the pilot scale implementation of fluidized bed reactor for struvite precipitation at the wastewater treatment plant. The test was carried out to assess the applicability of the technology in terms of robustness and final product quality, operating at low pH level (7,5-7,8). Obtained struvite pellets were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) with an energy dispersive spectrometer (EDS). The presence of foreign ions and particulate impurities in the feed source, affected the uniform growth of the crystal structure, resulting in highly porous structure of the pellets. Despite the varying physiochemical conditions, typical for wastewater, obtained pellets were determined with 95% struvite purity.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Morphology and Elemental Composition of Product Obtained from Struvite Fluidized Bed Reactor

Bydałek

Kula

Mąkinia

2018

Civil and Environmental Engineering Reports

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“…Thus, the design approach of barite scale prevention requires comprehensive knowledge on supersaturation relating to the presence of additives and shear rate for solution movement generated by inducing flowing vibration [8]. Additionally, the supersaturation of barite could be achieved by mixing barium chloride and sodium sulfate solutions in the necessity, excessive concentration and it may be susceptible to the presence of additives, on which temperature, mixing speed and overall salt concentration strongly influence on the rate of barite precipitation [21], [22], [23], [24], [25].…”

Section: Crystal Habit Due To the Presence Of Additives And Mechanicamentioning

confidence: 99%

Effects of Metal Oxides on the Crystallization of BaSo4 in a Vibrated Batch Crystallizer System

Karaman,

Muryanto,

Jamari

et al. 2020

IJEAT

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Scale formation of BaSO4 (barite) is a serious and persistent problem in a petroleum industry. The scale may severely hamper industrial processes through clogging the equipment, blocking the piping system, reducing the transfer of heat and material, which can lead to total breakdown and substantial financial losses. Hence, various methods have been applied to prevent the scaling of barite. This work reports a vibrated-batch lab crystallization to examine the influence of copper oxide (CuO) and zinc oxide (ZnO), an increasing temperature and mechanical vibration at 4.00 Hz and 8.00 Hz frequencies on crystallization kinetics and morphology of barite. The experiments using an experimental rig which was equipped with mechanical vibration to vibrate the rig under the heating program control. The inducing of vibration at 4.00 Hz and 8.00 Hz frequencies resulted in increasing rate scale deposition, whereas barite is the main crystal of the precipitated product which could be validated by the XRD Rietveld method. A morphological investigation by SEM confirmed that barite has mainly rosette-like crystal with the smaller size of order 5 µm. A new habit crystal of barite under the influence of vibration could be observed, and here an increasing vibration and additive concentrations made a reduction of scale deposition and providing more dense crystal morphology. The current findings suggest that the presence of mechanical vibration can be used to elucidate the mechanism of crystallization as well as the control of the morphology of barite. In practical terms, metal oxides could be potential as a scale inhibitor, while the mechanical vibration can be used to prevent the barite formation on pipes or mechanical equipment of the petroleum industry

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“…pH is an important factor in the formation of struvite crystals because it affects the solubility and thermodynamic properties [3]. To reduce struvite crystals as crystalline scales in general use inorganic additives Cu 2+ and Zn 2+ [4,5], Cu 2+ , Pb 2+ and Zn 2+ [6] or organic additives malic acid [7], carboxylic acid compounds [8], citric acid [9] , maleic acid [10] which can inhibit the growth of struvite crystals. In previous studies, three carboxylic acids (citric acid, tartaric acid and maleic acid) were used as * Corresponding author : saridyah05@gmail.com effective inhibitors even at low molar concentrations [8].…”

Section: Introductionmentioning

confidence: 99%

Study of Struvite Crystal Growth with The Addition of Tartaric Acid

et al. 2021

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The purpose of this study was to study the growth of struvite crystals from the effect of adding tartaric acid additives to an aqueous solution containing Mg2+, NH4+, and PO43-with a molar ratio of 1:1:1. The results of the study, it was found that the more the concentration of tartaric acid additive was added, it got smaller the rate constant was. By decreasing the value of the constant rate, the growth of struvite crystals also decreased then the growth of struvite crystals became inhibited. On the other hand, struvite has the potential to be used as a fertilizer. The concentration of tartaric acid also had a significant effect on controlling the production of struvite. The optimum crystal mass was obtained at a concentration of 20 ppm tartaric acid, a temperature of 40oC and a stirrer rotation of 300 rpm so that it can be applied in manufacture industry of struvite fertilizer.

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Kinetics and morphology analysis of struvite precipitated from aqueous solution under the influence of heavy metals: Cu2+, Pb2+, Zn2+

Cited by 34 publications

References 34 publications

Morphology and Elemental Composition of Product Obtained from Struvite Fluidized Bed Reactor

Morphology and Elemental Composition of Product Obtained from Struvite Fluidized Bed Reactor

Effects of Metal Oxides on the Crystallization of BaSo4 in a Vibrated Batch Crystallizer System

Study of Struvite Crystal Growth with The Addition of Tartaric Acid

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