TY - JOUR ID - 36108 TI - Seawater Desalination by using Nanofiltration (NF) and Brackish Water Reverse Osmosis (BWRO) Membranes in Sequential Mode of Operation JO - Journal of Membrane Science and Research JA - JMSR LA - en SN - AU - Kaya, Cüneyt AU - Jarma, Yakubu Abdullahi AU - Guler, Enver AU - Kabay, Nalan AU - Arda, Müşerref AU - Yükse, Mithat AD - Ege University AD - Chem Eng Dept, Ege University AD - Atılım University Y1 - 2020 PY - 2020 VL - 6 IS - 1 SP - 40 EP - 46 KW - Desalination KW - Nanofiltration KW - Reverse osmosis KW - Seawater KW - Integrated system DO - 10.22079/jmsr.2019.107844.1264 N2 - In this study, the applicability of nanofiltration (NF) membranes as a pretreatment prior to reverse osmosis (RO) in seawater desalination was investigated. The membranes used wereNF270 and NF90 as the NF membranes, while the brackish water (BW) RO membrane BW30 was used as the RO membrane. In desalination tests, permeates of the NF membraneswere collected and used as the feed to the BW30 membrane. The calculated permeate fluxes were 6.7 L/h.m2, 11.3 L/h.m2, 24.3 L/h.m2, and 36.6 L/h.m2 for single BW30-35 bar,NF270-30 bar + BW30-35 bar, NF90-30 bar + BW30-25 bar and NF90-30 BW30-35 bar, respectively. The calculated water recovery and rejected salt values were 51.6%, 41.4%,24.8%, 15.4% and 98.2%, 98.2%, 96.0%, 91.0% for NF90-30 bar + BW30-35 bar, NF90-30 bar + BW30-25 bar, NF270-30 bar + BW30-35 bar and single BW30-35 bar, respectively.The qualities of the product waters of integrated systems (NF+BWRO) and the single BWRO system were also investigated. Boron rejection was fairly well with average boronrejections of 59.3% and 60.2% by NF90-30 bar + BW30-25 bar and NF90-30 bar + BW30-35 bar combinations, respectively while single BW30-35 bar gave an average rejection of49.6%. The results obtained showed that the quality of product water obtained using single BWRO did not comply with the irrigation standards, while the integrated systems providedtotal compliance to irrigation standards with the exception of boron. UR - https://www.msrjournal.com/article_36108.html L1 - https://www.msrjournal.com/article_36108_b71cc2d05fa778f3044f580bebd626a8.pdf ER -