Optimization using response surface method (RSM) to investigate the compaction of mulch

Autor: Saeed Shojaei, Seyed fakhreddin afzali, Hamid Sodaiezadeh, Mohammad Jafari, Mohammad Ali Hakimzadeh Ardakani
Rok vydání: 2019
Předmět:
Zdroj: Modeling Earth Systems and Environment. 5:1553-1561
ISSN: 2363-6211
2363-6203
DOI: 10.1007/s40808-019-00600-3
Popis: One of the most important issues in the arid regions of the world is the displacement of sand dunes, which has become an important crisis in recent years, which cause haze in various parts of the world. One of the strategies for controlling the displacement of sand dunes and preventing the appearance of haze is mulching. Given the rise in global oil prices and its derivatives, and the application of this source, the cost of production of oil mulch has increased. Therefore, different countries are seeking to develop new ways to control haze. In this study, the purpose of the study was to examine the compaction of the mulch with a natural high-strength organic compound that also causes adhesion of soil particles and ultimately controls the displacement of sand dunes. For this purpose, available and inexpensive materials that were originally used in the country were used. The lime, gypsum, cement and black strap compounds were selected and the surface response method (RSM) was used to optimize the test conditions. In this paper, the central composite design (CCD) in response surface modeling was used to optimize the experimental conditions of penetration resistance. The effect of concentration of lime (12.5–62.5 g), gypsum (10–50 g), cement (2.5–12.5 g), and black strap (2.5–12.5 g) were investigated on penetration resistance. Each variable was coded at five levels. The optimum values for penetration resistance (2.2 kg/cm2) were 25.15, 40, 10, and 5 g for lime, gypsum, cement, and black strap, respectively. The results showed that the combination of natural-organic mulch resulted in good adhesion to sand particles due to its structural properties. By increasing the amount of compounds used in the mulch, more adhesion was created, except for the Black Strap compound, which should be used less than other compounds due to its fluid state.
Databáze: OpenAIRE
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