This study explores the effects of fines fraction, particle shape, and size ratio on long-term response sand-silt mixtures with fraction FF = 0-to-100% during Ko-loading cycles i 104. The void for all specimens evolves toward asymptotic terminal eT that captures transition from coarse-to-fine controlled behavior. Shear wave velocity versus intergranular eC equivalent (eC)eq ratios estimates par...

The characteristics of dissolved organic matter (DOM) and bromide ion concentration have a significant influence on the formation of disinfection by-products (DBPs). In order to identify the main DBP precursors, DOM was divided into five fractions based on molecular weight (MW), trihalomethane formation potential and haloacetic acid formation potential were determined for fractions, and the cha...

background: water filtration units have been faced problems in water turbidity removal related to their media, which is determined by qualitative indices. moreover, current qualitative indices such as turbidity and escaping particle number could not precisely determine the efficiency of the media in water filtration, so defining new indices is essential. in this study, the efficiency of anthrac...

The occurrence of four beta blockers, one antiepileptic drug, one lipid regulator, four anti-inflammatories, and three fluoroquinolones was studied in a river receiving sewage effluents. All compounds but two of the fluoroquinolones were observed in the water above their limit of quantification concentrations. The highest concentrations (up to 107 ng L(-1)) of the compounds were measured during...

The high cost of kafirin and zein restricts their use for bioplastic and food applications. Effective, simple and rapid kafirin/zein isolation processes are required. Here a percolationtype aqueous ethanol solvent extraction process from coarse meals (grits) and coarse sorghum DDGS for kafirin and zein isolation employing a low ratio of extractant to meal (2.5:1) was investigated, which is pote...

The main objective of this study is to evaluate and predict the performance of slow sand filters used for wastewater treatment. The uncertainties in the control parameters and processes require fuzzy sets to be used when modelling system performance. Fuzzy logic if–then rules were used to build a model for the removal efficiency (total coliforms) of slow sand filters. The data were collected fr...