The aim of this work was the study of the combination of an inorganic pre-polymerized coagulant (PACl) with ferric species and polysilicic acid in various mixing order, Al/Fe/Si and OH/Al molar ratios, and two polymerization techniques for the production of a unique reagent representing a coagulant, more efficient than commercial PACl-18 and laboratory prepared PACllab for water or wastewater t...

iran, for it's socio-economic development is faced with limitations, because of growing population, economic drawbacks and shortcomings in resources. therefore, country planning should be based on considering the limitations. at present, water treatment industry in iran is regarded as one of the major development activities needing a comperehensive management with both quantitative and qua...

Coagulation using inorganic compounds such as aluminum sulfate is commonly used in water-wastewater treatment. However, there are some drawbacks to its utilization, a significant decrease the treated water’s pH, non-biodegradable sludge, and potential negative impact on human mental health (dementia Alzheimer's). The use of coagulants can be minimized with addition natural-based coagulant-aid p...

During the last decade, there has been a concern about the relation between aluminum residuals in treated water and Alzheimer disease, and more interest has been considered on the development of natural coagulants such as chitosan. Chitosan, a natural linear biopolyaminosaccharide, is obtained by alkaline deacetylation of chitin. The present study was aimed to investigate the effects of alum as...

Abstract For turbidity removal, most drinking water treatment plants are using coagulants due to the presence of suspended and colloidal materials at coagulation flocculation units. Aluminium sulphates salts widely used coagulants, such as aluminium sulphate (Alum) ferric chloride. However, several researches have linked Alzheimer's disease use sulphate. Hence, scholars conducted on possibility...

A bioflocculant (MBFA18) was produced by Aspergillus niger (A18) using potato starch wastewater (PSW) as nutrients. The cultivation processes and flocculating treatment for PSW purification were systematically studied. The flocculating rate of the MBFA 18 achieved 90.06% (kaolin clay) under the optimal cultivation condition (PSW with 5950 mg/L COD, 20 g/L glucose, 0.2 g/L urea and without phosp...