Farayandno

Farayandno

Production of sulfur-bentonite fertilizer from gas sweetening waste and evaluation of its performance on sulfur release in soil

Document Type : Original research

Authors
YASAMAN SALAMAT 1
Hosein Hamadi 2
KAZEM MOKFA 3
1 PhD Student, Department of Chemistry, Faculty of Science, Shahid Chamran University, Ahvaz
2 Associate Professor, Department of Chemistry, Faculty of Science, Shahid Chamran University, Ahvaz
3 Research and Technology Expert, Research and Technology Unit, Abadan Oil Refinery, Abadan
10.22034/farayandno.2025.2067250.2003
Abstract
In this study, the possibility of producing bentonite-sulfur fertilizer from sulfur waste from the Abadan Refinery's desalination unit was investigated with an applied approach. For this purpose, fertilizer samples with different percentages of bentonite were prepared and subjected to laboratory tests to evaluate the effect of bentonite content on the sulfur release process in soil. The research method included processing sulfur waste, preparing bentonite-sulfur compounds in different concentrations, and comparative experiments in controlled soil conditions. In addition to measuring the sulfur release rate, the performance of the produced fertilizer was also compared with similar industrial samples. The total sulfur content of the sample was 99.23% of the received waste, and no significant heavy metals were observed in it. The results showed that increasing the proportion of bentonite from 10% to 50% increased the sulfur release rate from 4.63 to 11.54 mg/L, which is attributed to the improved dispersion of sulfur particles and the increased contact surface area of sulfur particles in the soil. Comparison with existing commercial fertilizers showed that the product produced from refinery waste has similar efficiency and, in some cases, relative superiority.
Keywords
Sulfur Bentonite Fertilizer, Soil Fertility, Refinery Sulfur Waste, Sustainable Agriculture, Industrial Waste Management

Subjects

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