Assessment of phosphogypsum use in a nursery for plant propagation

Ghazel, Naziha; Saadaoui, Ezzeddine; Romdhane, Chokri Ben; Abbes, Noureddine; Grira, Mohamed; Abdelkebir, Saad; Aydi, Samir; Abdallah, Lotfi Ben; Mars, Mohamed

doi:10.1080/00207233.2017.1356631

Cited by 13 publications

(4 citation statements)

References 18 publications

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“…To obtain the transformation into a stable “insoluble” anhydride, it is indeed to be heated to much higher temperatures close to 350 °C. − …”

Section: Resultsmentioning

confidence: 99%

“…These results from the XRD analysis are in agreement with the results reported by Tewo et al . and Ghazel et al . , In the desulfurization, we have studied the influence of some additives such as charcoal, silica, alumina, and clay. All of the experiments were carried out in a “Heuracus” noodle oven at a temperature of 1000 °C, using 10 g of phosphogypsum.…”

Section: Resultsmentioning

confidence: 99%

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Sustainable Approach for Recovery of Sulfur from Phophogypsum

et al. 2020

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Phosphogypsum releases have a detrimental effect on flora and fauna and also cause economic loss due to the loss of sulfur. This study contributes to solving this problem using a process that consists of the valorization of this byproduct. A new sustainable method that consists of using sulfuric acid is proposed to process the Algerian phosphogypsum to recover the sulfur, which is imported in huge quantities until today. The experiments carried out in this investigation have enabled us to recover sulfur in the form of SO2 using appropriate additives such as silica, alumina, clay, and charcoal as reducing agents. These additives accelerate the desulfurization process and decrease the decomposition temperature of calcium sulfate. As a result, these additives allow the reduction of energy used and simultaneously increase the concentration of SO2. X-ray diffraction shows that thermochemical decomposition is not complete and that the sulfur present in the residue exists in the form of CaSO4 and CaS at 1150 °C. After calcination of phosphogypsum, the analysis of the residues obtained shows that they have a chemical composition almost identical in terms of quality to that of clinker, which can further be used in the cement production.

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“…To obtain the transformation into a stable “insoluble” anhydride, it is indeed to be heated to much higher temperatures close to 350 °C. − …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Sustainable Approach for Recovery of Sulfur from Phophogypsum

et al. 2020

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“…About 4.5 to 6 tons of Phosphogypsum is produced from one-ton phosphoric acid recovered [20]. Containing various impurities, including toxic heavy metals, dumping Phosphogypsum in open areas without any treatment possesses detrimental oddity to the environment, especially to the nearby surface or groundwater sources [14,[20][21][22]. Though the existence of impurities in Phosphogypsum sets restrictions on utilizing it [23][24], researchers are trying their best to use Phosphogypsum in numerous reprocessing manner to lessen the problems induced by either environmental and economic issues or in concrete technology.…”

Section: Introductionmentioning

confidence: 99%

Properties Evaluation of Self Compacting Concrete Made with Industrial By-Products

Amit,

Rana,

Ara

et al. 2023

Materials Engineering Research

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Urbanization with advanced technologies should be economic, sooner operational, and sustainable. In addition to reducing construction time, modern technologies should utilize various left-over materials or by-products to save budget and the environment. The present study examines the potential of using Phosphogypsum, an industrial by-product, in concrete as an environment-friendly, sustainable solution. Various percentages (5%, 10%, 15%, and 20%) of Phosphogypsum have been used to replace Portland cement to produce cost-effective SCC with favorable properties and strength. Conplast SP430 G8 superplasticizer has been used at a fixed amount as a chemical admixture. Laboratory tests have been performed to analyze various material properties together with conducting slump flow test, V-funnel test, and L-box test to evaluate the workability of the SCC. Compressive strength test results at 3-, 7-, 14-, and 28-days’ concrete reveals that light replacement of cement with Phosphogypsum may increase the strength, whereas higher replacement would result in a decrease in strength. The present study concludes that a 10% replacement of cement with Phosphogypsum would provide the best result with increased compressive strength. This finding eventually confirms the use of Phosphogypsum, an industrial by-product, in concrete without compromising its strength with a reduction of time and construction cost.

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“…Reproducción fácil por semillas se sugiere que la estratificación sea por 8 semanas para proceso de germinado a partir de la semilla. Estas semillas pueden tomar mucho tiempo para brotar, pero este tiempo se puede reducir si se escarifica la semilla, en eso consiste la estratificación o por esquejes Las raíces empezarían a formarse más o menos entre 5 y 9 semanas (Ghazel. N et al 2018).…”

Section: Anexosunclassified

Cuantificación del ahorro de agua que se puede lograr en la gestión de espacios verdes urbanos a través de la selección de especies y la modificación del suelo en un estudio comparativo

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La presente investigación tuvo como objetivo determinar si la selección sensata de especies o el manejo del suelo sería la mejor opción para reducir el consumo de agua y optimizar la cantidad necesaria para mantener el espacio verde urbano. En total se implementaron 8 tratamientos, con 10 repeticiones por tratamiento, los cuales fueron llevados a cabo en macetas con 5000 gr de suelo arenoso y a 4 de estos suelos se le agrego una enmienda de biochar de 75gr. De los 8 tratamientos, en 4 de estos se utilizó la especie exótica Myoporum l. y en los otros 4 restantes se utilizó un especie nativa, Vallesia g. a cada especie se le sometió a dos tazas de riego las cuales fueron de 500 ml. y de 125 ml. para cada tratamiento ya sea para los controles como para los suelos enmendados con el biochar. A lo largo del estudio se llevaron a cabo mediciones respecto al diámetro, altura, número de hojas y presión de agua en los tejidos vasculares para cada especie, sumada a esto hubo mediciones del porcentaje de humedad en todos los suelos. Con los parámetros fisiológicos evaluados la especie Vallesia g. obtuvo mejor resultado ya que presento mayor tolerancia al estrés hídrico. Respecto al a los suelos modificados con biochar se observó un efecto positivo con relación al porcentaje de humedad en estos suelos. Los tratamientos mostraron significativamente que selección de especies fue de lejos la fuente más importante para la variación de resultados. Agregar biochar al suelo aumentó la retención del agua del suelo, pero como se mencionó previamente la plantación de la especie nativa fue mucho más efectiva en la reducción del consumo de agua, debido a la adaptación fisiológica de las especies (baja presión de xilema)

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Assessment of phosphogypsum use in a nursery for plant propagation

Cited by 13 publications

References 18 publications

Sustainable Approach for Recovery of Sulfur from Phophogypsum

Sustainable Approach for Recovery of Sulfur from Phophogypsum

Properties Evaluation of Self Compacting Concrete Made with Industrial By-Products

Cuantificación del ahorro de agua que se puede lograr en la gestión de espacios verdes urbanos a través de la selección de especies y la modificación del suelo en un estudio comparativo

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