The lignocellulosic wastes produced in food industries are suitable raw materials for the production of biological products. In this study, the solid state fermentation of Aspergillus flavus on lignocellulosic wastes was evaluated for microbial protein production. The fraction of the full factorial method was applied for experiment design and process optimization. The results analysis was perfo...

Nitrogen stripping plays a vital role during the sulfate-rich wastewater treatment process by sulfate-reducing bacteria (SRB). However, interaction between nitrogen stripping, sulfate reduction capacity, S2– concentration, and microbial community structure is rarely studied. Here, two anaerobic systems were conducted to analyze these interactions simultaneously. Results showed that toxic produc...

zinc has previously been reported to alleviate salinity stress in plants. in this study, we monitored various biomass and chlorophyll fluorescence parameters to determine the optimum zinc sulfate concentration that can be used as foliar spray to alleviate salinity stress in glycine soja. the plants subjected to a series of salinity levels (nacl concentration of 0, 100, 200, and 300 mmol l-1), a...

glycosaminoglycan (gag) has a pivot role in renal function and homeostasis. analysis of gag amount generally serves to determine gag alteration due to diabetes mellitus. critical electrolyte concentration (cec) staining can be an efficacy method to study gag amount changes. based on an experimental study, 20 male rats were randomly divided equally into two experimental and control groups. diabe...

this study investigated biodegradation of dibenzothiophene (dbt) in marsh soil spiked bywhite-rot fungus phanerochaete chrysosporium. soil samples were spiked with 100 ppm dbtand incubated at 30°c in a dark chamber for 30 days. samples were evaluated for ph, mnperoxidaseactivity, sulfate ion concentration and growth during the tests. results showedmaximum levels of ph, mn-peroxidase and sulfate...

Twice washed mitochondria from rat kidney cortex can accumulate sulfate ions from low (10(-7)M) ambient concentrations to create virtual gradients of several hundred to one. This sulfate is subsequently released. The activation energy for the uptake is 12,000 calories per mole; for release it is about 30,000 calories per mole. Variations in the sulfate concentration of the medium show that ther...

Flotation is a common process in sulfide ore beneficiation. Due to the restrictions and lack of access to high-quality water sources for industrial purposes, recycled water plays an important role in the flotation processes. Due to the existence of various organic and inorganic substances in the process, water influences the flotation performance. In this work, the effect of accumulation of sul...