Fo Based Integrated System For Juice Concentration

In order to study, fruit juices are concentrated using traditional methods such as multi-stage vacuum evaporation. The impact of this method is to reduce the color, eliminate the taste of fresh fruit juice, and have an unpleasant taste. Too cooked due to heat. In addition, the simultaneous concentration of fruit juices and preservation of nutritional and thermosensitive components poses challenges in food processing. Membrane-based treatments are a promising alternative to fruit juice concentrates. The technology of forward osmosis (FO) has garnered increasing research interest for its excellent advantages in producing high-quality concentrated juice. The green and sustainable process that has low energy requirement and harmless to environment is desired for juice concentration to increase its shelf life and save the transportation cost. In this work, a dual stage and dual cycle of FO system for fruit juice concentration process were investigated. Along with this FO system, the combination of membrane type and draw solution were observed to optimize the FO process. Several additives and fertilizer containing high-valence ions were evaluated to improve the feasibility of the FO process for juice concentration, using nanofiltration (NF)-like and reverse osmosis (RO)-like FO membrane with an interlayer constructed by MOF-s based nanoparticles. The prepared NF-like and RO-like FO membranes exhibited negative potential, superior hydrophilicity, and uneven crosslinking, which matched well with one selected additive (MgSO4) and complex fertilizer (KCl, KH2PO4, MAP). Membrane characterization results show that the prepared FO iTFC membrane is RO-like, with PDA-modified ZIF-8 nanoparticles as the layer in between. This membrane exhibits negative potential, superior hydrophilicity, and uneven cross-linking. Food additives and KH2PO4 fertilizers containing high valence negative ions are used, these properties can increase water transport. If double fertilizer is used in the draw solution, it is better to use 山东科技大学毕业设计（论文） ABSTRACT v KCL+MAP. Because double fertilizer has better results and the NPK content (0.61/1.35/1.7) is more complete. Using a draw solution with triple fertilizer has more complete results compared to a draw solution with double fertilizer. Apart from that, the water flux value produced by the draw solution with triple fertilizer produces a small value.