Soluble microbial products (SMP) have been long time considered the major cause of membrane fouling when membrane bioreactors (MBR) are used for wastewater treatment. As a result, the formation and degradation of SMP have been incorporated in the conventional ASM models for a better prediction of MBR performance. This paper studies the impact of SMP modelling when optimizing the start-up of an ...

background: soluble microbial products (smps) have an effective role on fouling of membrane in bioreactors (mbrs). the aim of this study was to survey the role of smps on mbrs used in treating municipal wastewater. materials: lowry and phenol sulfuric acid methods were used to measure carbohydrates concentrations and protein content, respectively. biochemical oxygen demand (bod), chemical oxyge...

pharmaceutical products prepared in pharmacies have the potential of contamination with different microorganisms. this is in part due to the unhygienic environment and also lack of a suitable preservative system. in this study, microbial quality of eucerin-urea ointments prepared at different pharmacies in tehran, at the point of sale and also after two weeks storage at room temperature was exa...

This study was to reveal the limiting factors of lignocellulose degradation and further improve the potential degradation of microbial community MC1, by pH manual adjustment (pHMA) and culture medium partial replacement (CMPR) during the process of rice straw degradation. The results indicated degradation rate in control (5% rice straw) increased, ranging from 33.3 to 67.5% via pHMA method, and...

dissolved organic nitrogen (don) can react with disinfectants to produce numerous disinfectionbyproducts (dbps), particularly nitrogen-containing dbps (n-dbps), and produce serious adverse effectson public health. widely used biological processes in drinking water treatment can increase don in effluents,and enhance these ill effects. this study investigated don in a full-scale two-stage ozonati...

Background: Hand-made cheeses are usually prepared following dissimilar procedures which influence the quality and the organoleptic properties of the products. Objective of the present study was to evaluate how manufacturing season and ripening time affect hand-made Pecorino Abruzzese cheese. Methods: Microbiological and physicochemical characteristics were investigated on raw milk cheeses pro...

dissolved organic nitrogen (don) can react with disinfectants to produce numerous disinfectionbyproducts (dbps), particularly nitrogen-containing dbps (n-dbps), and produce serious adverse effectson public health. widely used biological processes in drinking water treatment can increase don in effluents,and enhance these ill effects. this study investigated don in a full-scale two-stage ozonati...