For Nanofiltration membranes, the rejection of monovalent ions range between 0% and 50% 0% and 30% 60% and 70% none of the above

Nanofiltration membranes have______ rejections for the di- and trisaccharides, sucrose, and raffinose, with molecular diameters of_________ High and 10-13 Å Low and 07-10 Å High and 07-10 Å None of these

Which of the following is/are the advantages of nanofiltration? Reduced salt content and dissolved solid content (TDS) in brackish water Reduced nitrates and sulphates Reduction in heavy metals all the above

Suspended solids are allowed to pass through Microfiltration Ultrafiltration Nanofiltration All of these

Which of the following statement is incorrect? Nanofiltration can withstand very high or low pH environment Nanofiltration cannot withstand very high or low pH environment Nanofiltration membrane tend to have a slightly charged surface, with a negative charge at neutral pH both a and c

Which of the following statements is incorrect? Porous membrane contains fixed pores, in the range of 0.1-10 µm for microfiltration and 2- 100 µm for ultrafiltration. Porous membrane contains variable pores, in the range of 0.1-100 µm for microfiltration and 2- 100 µm for ultrafiltration. The main problem in microfiltration and ultrafiltration membrane is flux decline. Therefore, the choice of membrane material for such process is based on prevention of fouling and cleaning procedure after it is fouled. none of the above