Low-cost ceramic microfiltration membrane made from natural phosphate for pretreatment of raw seawater for desalination

2021 ◽  
Vol 41 (2) ◽  
pp. 1613-1621
Author(s):  
Abdessamad Belgada ◽  
Brahim Achiou ◽  
Saad Alami Younssi ◽  
Fatima Zohra Charik ◽  
Mohamed Ouammou ◽  
...  
Keyword(s):  
Low Cost ◽  
Microfiltration Membrane ◽  
Natural Phosphate

A novel cementitious microfiltration membrane: mechanisms of pore formation and properties for water permeation

RSC Advances ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 99-108 ◽  
Author(s):  
Zhe Wang ◽  
Zhonglin Chen ◽  
Jing Chang ◽  
Jimin Shen ◽  
Jing Kang ◽  
...  
Keyword(s):  
Pore Size ◽  
Pore Formation ◽  
Low Cost ◽  
Inorganic Membrane ◽  
Ambient Conditions ◽  
Microfiltration Membrane ◽  
Water Permeation

A low-cost cementitious inorganic membrane, with mean pore size of 2.4 μm, was fabricated under ambient conditions.

scholarly journals Elaboration and properties of low-cost ceramic microfiltration membrane from local Tunisian clay for wastewater treatment

Cerâmica ◽  
2020 ◽  
Vol 66 (380) ◽  
pp. 386-393
Author(s):  
N. Kamoun ◽  
W. Hajjeji ◽  
R. Abid ◽  
M. A. Rodriguez ◽  
F. Jamoussi
Keyword(s):  
Wastewater Treatment ◽  
Retention Rate ◽  
Low Cost ◽  
Porous Ceramic ◽  
Treatment Plant ◽  
Dip Coating ◽  
Permeate Flux ◽  
Average Pore ◽  
Microfiltration Membrane ◽  
Ceramic Support

Abstract This study focused on the development and preparation of a microfiltration membrane, based on a low-cost natural Tunisian clay powder, deposited on macro-porous ceramic support. The deposit was made through a dip-coating technique, followed by a drying process and sintering at 700 °C. Results revealed that the obtained membrane was characterized by a good adhesion between the membrane layer and the ceramic support, an average pore diameter of 0.34 mm, and a porosity of 39%. This membrane was applied in the treatment of wastewater generated by the wastewater treatment plant of Sfax, Tunisia. The performances in terms of permeate flux and efficiency were determined in order to reduce the pollutant content expressed in terms of turbidity, biochemical oxygen demand (BOD5), and suspended matter (MES). Results showed an MES retention value of about 15%, and turbidity and BOD5 retention rate of 99% and ~100%, respectively.

The preparation and application of a low-cost multi-channel tubular inorganic–organic composite microfiltration membrane

2015 ◽  
Vol 151 ◽  
pp. 131-138 ◽  
Author(s):  
Xingya Li ◽  
Yaqin Wang ◽  
Jiefeng Pan ◽  
Zhengjin Yang ◽  
Yubin He ◽  
...  
Keyword(s):  
Low Cost ◽  
Microfiltration Membrane

Decomposition of the metastable beta titanium alloy Ti-15-3

1983 ◽  
Vol 41 ◽  
pp. 264-265
Author(s):  
Y. L. Chen ◽  
S. Fujlshiro
Keyword(s):  
Low Cost ◽  
High Strength ◽  
Alpha Phase ◽  
Thick Sheet ◽  
Omega Phase ◽  
Beta Titanium Alloy ◽  
Beta Titanium ◽  
Beta Matrix ◽  
Metastable Beta ◽  
Very High

Metastable beta titanium alloys have been known to have numerous advantages such as cold formability, high strength, good fracture resistance, deep hardenability, and cost effectiveness. Very high strength is obtainable by precipitation of the hexagonal alpha phase in a bcc beta matrix in these alloys. Precipitation hardening in the metastable beta alloys may also result from the formation of transition phases such as omega phase. Ti-15-3 (Ti-15V- 3Cr-3Al-3Sn) has been developed recently by TIMET and USAF for low cost sheet metal applications. The purpose of the present study was to examine the aging characteristics in this alloy.The composition of the as-received material is: 14.7 V, 3.14 Cr, 3.05 Al, 2.26 Sn, and 0.145 Fe. The beta transus temperature as determined by optical metallographic method was about 770°C. Specimen coupons were prepared from a mill-annealed 1.2 mm thick sheet, and solution treated at 827°C for 2 hr in argon, then water quenched. Aging was also done in argon at temperatures ranging from 316 to 616°C for various times.

Chromic Acid Etching of Polyethylene

1973 ◽  
Vol 31 ◽  
pp. 72-73
Author(s):  
J. D. Muzzy ◽  
R. D. Hester ◽  
J. L. Hubbard
Keyword(s):  
Chromic Acid ◽  
Low Cost ◽  
Acid Etching ◽  
Crystalline Morphology ◽  
Bulk Specimen ◽  
Morphological Studies ◽  
Perfect Form ◽  
Molecular Length ◽  
Lamellar Texture ◽  
Cost Studies

Polyethylene is one of the most important plastics produced today because of its good physical properties, ease of fabrication and low cost. Studies to improve the properties of polyethylene are leading to an understanding of its crystalline morphology. Polyethylene crystallized by evaporation from dilute solutions consists of thin crystals called lamellae. The polyethylene molecules are parallel to the thickness of the lamellae and are folded since the thickness of the lamellae is much less than the molecular length. This lamellar texture persists in less perfect form in polyethylene crystallized from the melt.Morphological studies of melt crystallized polyethylene have been limited due to the difficulty of isolating the microstructure from the bulk specimen without destroying or deforming it.

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