1. Optimal synergy between FO membrane and draw solute for high-efficient fruit juice concentration and simultaneous fruiter fertigation.
- Author
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Ma, Zhun, Inastiti Noor, Indira, Liu, Li, Wang, Xiaomeng, Wang, Qun, Wang, Zhidong, Brendon, Hlomayi, Wang, Jian, Gao, Jun, Liu, Hongbo, and Gao, Xueli
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FERTIGATION , *HYBRID systems , *APPLE juice , *OSMOTIC pressure , *FRUIT juices , *FOOD additives , *FISH oils - Abstract
[Display omitted] • NF-like iTFC FO membrane was paired with a high-valence food additive. • C 6 H 5 K 3 O 7 was identified as the optimal draw solute for pre-concentrating fruit juice. • MgSO 4 was found to be suitable for further concentration of fruit juice. • One dual-stage and dual-cycle FO was proposed without the need of DS recovery. • A hybrid system can establish a relationship between fruit and juice production. The technology of forward osmosis (FO) has garnered increasing research interest for its excellent advantages in producing high-quality concentrated juice. However, the practical application of FO to concentrate juice is hindered by the lack of an appropriate FO membrane and matched draw solution. To address this challenge, several additives containing high-valence ions were investigated to improve the feasibility of the FO process for juice concentration, using a nanofiltration(NF)-like FO membrane with an interlayer constructed by MOFs-based nanoparticles. The prepared NF-like FO membranes exhibited negative potential, superior hydrophilicity, and uneven crosslinking, which matched well with five selected additives (C 6 H 8 O 7 , K 2 SO 4 , C 6 H 5 K 3 O 7 , MgSO 4 , and KH 2 PO 4), potentially preventing bacterial growth on the membrane surface during the concentration process and contributing to the growth of plants. A comprehensive comparison of selected five additives indicated that, with the exception of MgSO 4 , these additives at their saturated concentration exhibited marginally higher osmotic pressure than that of the fresh juice, indicating their limited suitability for further concentration of the fresh juice. However, during the pre-concentration phase of the fresh juice, the juice concentration is lower than that of the fresh juice due to the additional water incorporated during the juice production process. C 6 H 5 K 3 O 7 was the optimal draw solution for pre-concentrating apple juice, while MgSO 4 was better suited for further concentrating fresh juice. The concentrations of C 6 H 5 K 3 O 7 and MgSO 4 in the final juice were well below their limit value. Based on these results, a proposal for a dual-stage and dual-cycle FO process has demonstrated to achieve highly efficient concentration of fruit juice and seamless integration of juice production and fertigation of fruit trees, without the need to consider draw solution recovery. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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