Implementation of osmotic membrane distillation with various hydrophobic porous membranes for concentration of sugars solutions and preservation of the quality of cactus pear juice

Only nonwetted porous membranes can be used in membrane distillation. The possibility of application in this process the capillary polypropylene membranes manufactured by thermally-induced phase separation was studied. The performance of a few types of membranes available commercially was presented. The resistance of the membranes to wetting was tested in the continuous process of water desalination. These studies were carried out for 1000 h without module cleaning. The presence of scaling layer on the membranes surface was confirmed by Scanning Electron Microscope observations. Both the permeate flux and distillate conductivity were almost not varied after the studied period of time, what indicates that the used membranes maintained their nonwettability, and the negative influence of scaling was limited. The role of surface porosity on the pore wetting and influence of membrane wettability on the quality of the distillate obtained were discussed.

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Clarification Processes of Orange Prickly Pear Juice (Opuntia spp.) by Microfiltration

Membranes ◽

10.3390/membranes11050354 ◽

2021 ◽

Vol 11 (5) ◽

pp. 354

Author(s):

Jaime A. Arboleda Mejia ◽

Jorge Yáñez-Fernandez

Keyword(s):

Suspended Solids ◽

Cross Flow ◽

Laboratory Scale ◽

Prickly Pear ◽

Permeate Flux ◽

Color Properties ◽

Pear Juice ◽

Opuntia Spp

In this study, fresh orange prickly pear juice (Opuntia spp.) was clarified by a cross-flow microfiltration (MF) process on a laboratory scale. The viability of the process—in terms of productivity (permeate flux of 77.80 L/h) and the rejection of selected membranes towards specific compounds—was analyzed. The quality of the clarified juice was also analyzed for total antioxidants (TEAC), betalains content (mg/100 g wet base), turbidity (NTU) and colorimetry parameters (L, a*, b*, Croma and H). The MF process permitted an excellent level of clarification, reducing the suspended solids and turbidity of the fresh juice. In the clarified juice, a decrease in total antioxidants (2.03 TEAC) and betalains content (4.54 mg/100 g wet basis) was observed as compared to the fresh juice. Furthermore, there were significant changes in color properties due to the effects of the L, a*, b*, C and h° values after removal of turbidity of the juice. The turbidity also decreased (from 164.33 to 0.37 NTU).

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Selectivity and characteristics of direct contact membrane distillation type experiment. I. Permeability and selectivity through dried hydrophobic fine porous membranes

Journal of Membrane Science ◽

10.1016/0376-7388(92)80056-p ◽

1992 ◽

Vol 72 (1) ◽

pp. 53-72 ◽

Cited By ~ 57

Author(s):

Yoshishige Fujii ◽

Shoji Kigoshi ◽

Hidetsugu Iwatani ◽

Masatoshi Aoyama

Keyword(s):

Direct Contact ◽

Membrane Distillation ◽

Porous Membranes ◽

Type Experiment ◽

Direct Contact Membrane Distillation

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Fenton Discoloration of Ultrasonicated Purple Cactus Pear Juice

Molecules ◽

10.3390/molecules22081344 ◽

2017 ◽

Vol 22 (8) ◽

pp. 1344 ◽

Cited By ~ 1

Author(s):

Isidro Reyes-Hernández ◽

Nelly Cruz-Cansino ◽

Ingrid Santander-Martínez ◽

Ernesto Alanís-García ◽

Luis Delgado-Olivares ◽

...

Keyword(s):

Cactus Pear ◽

Pear Juice

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Scaling resistance by fluoro-treatments: The importance of wetting states

Journal of Materials Chemistry A ◽

10.1039/d1ta07695g ◽

2022 ◽

Author(s):

Li Liu ◽

Laura Charlton ◽

Yanqing Song ◽

Tao Li ◽

Xue-Mei Li ◽

...

Keyword(s):

High Salinity ◽

Membrane Distillation ◽

Separation Process ◽

Porous Membranes ◽

Thermally Driven ◽

Scaling Resistance

Membrane distillation is a thermally driven separation process using hydrophobic, porous membranes. Among various problems faced by membrane distillation, scaling remains an unresolved challenge in treating streams of high salinity....

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Physicochemical parameters, bioactive compounds and microbial quality of sonicated pear juice

International Journal of Food Science & Technology ◽

10.1111/ijfs.13124 ◽

2016 ◽

Vol 51 (7) ◽

pp. 1552-1559 ◽

Cited By ~ 22

Author(s):

Muhammad Saeeduddin ◽

Muhammad Abid ◽

Saqib Jabbar ◽

Bing Hu ◽

Malik Muhammad Hashim ◽

...

Keyword(s):

Bioactive Compounds ◽

Physicochemical Parameters ◽

Microbial Quality ◽

Pear Juice

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Chemical composition of cactus pear cladodes under different fertilization and harvesting managements

Pesquisa Agropecuária Brasileira ◽

10.1590/s0100-204x2018000200011 ◽

2018 ◽

Vol 53 (2) ◽

pp. 221-228

Author(s):

Gil Mario Ferreira Gomes ◽

Magno José Duarte Cândido ◽

Marcos Neves Lopes ◽

Theyson Duarte Maranhão ◽

Dhones Rodrigues de Andrade ◽

...

Keyword(s):

Organic Matter ◽

Chemical Composition ◽

Crude Protein ◽

Block Design ◽

Neutral Detergent Fiber ◽

Single Superphosphate ◽

Cactus Pear ◽

Randomized Complete Block Design ◽

Total Carbohydrates

Abstract: The objective of this work was to evaluate the effects of combined phosphorus and nitrogen fertilization and of harvesting frequency on the chemical composition of 'Gigante' cactus pear (Opuntia ficus-indica) cladodes. The experiment was carried out in two municipalities, Quixadá and Tejuçuoca, in the state of Ceará, Brazil. Fertilization with nitrogen (urea) and phosphorus (single superphosphate) was done with nine doses, respectively: 10 and 70, 70 and 10, 70 and 70, 70 and 130, 100 and 100, 130 and 70, 130 and 130, 130 and 190, and 190 and 130 kg ha-1 per year, besides 100 kg ha-1 N and P2O5 per year as the control. The harvesting frequencies evaluated were annual and biannual. A randomized complete block design was adopted, in split plot, with four replicates. The effect of fertilization on the contents of total dry matter, crude protein, neutral detergent fiber, organic matter, and total carbohydrates in the cladodes varies with harvesting frequency and site. Regarding harvesting frequency, there were higher contents of organic matter, total carbohydrates, and neutral detergent fiber, but lower contents of crude protein for the biannual harvesting in both municipalities. Annual harvesting improves the nutritional quality of primary and secondary cladodes in the municipality of Quixadá and of secondary and tertiary cladodes in Tejuçuoca.

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