scholarly journals Ultra-low Pressure Type Composite Reverse Osmosis Membrane Module "ES series".

MEMBRANE ◽  
1997 ◽  
Vol 22 (2) ◽  
pp. 111-113
Author(s):  
Mutsuo Kawasaki ◽  
Ichiro Kawada
Keyword(s):  
Reverse Osmosis ◽  
Low Pressure ◽  
Membrane Module ◽  
Reverse Osmosis Membrane ◽  
Type Composite

Removal of endocrine disrupting chemicals (EDCs) using low pressure reverse osmosis membrane (LPROM)

2007 ◽  
Vol 56 (8) ◽  
pp. 161-168 ◽  
Author(s):  
A.R.A. Razak ◽  
Z. Ujang ◽  
H. Ozaki
Keyword(s):  
Reverse Osmosis ◽  
Endocrine Disrupting Chemicals ◽  
Cross Flow ◽  
Low Pressure ◽  
Endocrine Function ◽  
Operating Parameters ◽  
Operating Pressure ◽  
Reverse Osmosis Membrane ◽  
Adverse Health Effects ◽  
Endocrine Disrupting

Endocrine disrupting chemicals (EDCs) are the focus of current environmental issues, as they can cause adverse health effects to animals and human, subsequent to endocrine function. The objective of this study was to remove a specific compound of EDCs (i.e. pentachlorophenol, C6OCL5Na, molecular weight of 288 g/mol) using low pressure reverse osmosis membrane (LPROM). A cross flow module of LPROM was used to observe the effects of operating parameters, i.e. pH, operating pressure and temperature. The design of the experiment was based on MINITABTM software, and the analysis of results was conducted by factorial analysis. It was found that the rejection of pentachlorophenol was higher than 80% at a recovery rate of 60 to 70%. The rejection was subjected to increase with the increase of pH. The flux was observed to be increased with the increase of operating pressure and temperature. This study also investigated the interaction effects between operating parameters involved.

Performance of low pressure reverse osmosis membrane (LPROM) for separating mono- and divalent ions

1998 ◽  
Vol 38 (4-5) ◽  
pp. 521-528 ◽  
Author(s):  
Zaini Ujang ◽  
G. K. Anderson
Keyword(s):  
Heavy Metals ◽  
Reverse Osmosis ◽  
Metal Removal ◽  
Feed Solution ◽  
Low Pressure ◽  
Operating Conditions ◽  
Operating Pressure ◽  
Reverse Osmosis Membrane ◽  
Permeate Flux ◽  
Feed Concentration

This paper describes an investigation on the rejection of the divalent anions from ZnSO4 using LPROMs, and to establish the effect of operating pressure, feed concentration and temperature on metal removal, then to compare with the monovalent anions, ZnCl2. A bench-scale spiral wound configuration of sulphonated polysulphone low pressure reverse osmosis membrane (LPROM) was used to remove heavy metals at various operating conditions, i.e. operating conditions, solute concentrations and temperature. The results show that the higher the operating pressure the greater will be the permeate flux for heavy metals from both mono- and divalent anions. At low operating pressure however, metals from the divalent anions give a higher permeate flux than did the monovalent anions. Permeate flux in both mono- and divalent anions is shown to be subsequently increased by a decrease of the concentration of feed solution. Regarding metal removal, metals from divalent anions were rejected more effectively than monovalent anions at all levels of feed concentration.

In situ modification of polyamide reverse osmosis membrane module for improved fouling resistance

2019 ◽  
Vol 141 ◽  
pp. 402-412 ◽  
Author(s):  
Meihong Liu ◽  
Chuang Yu ◽  
Yiyang Wu ◽  
Zhenhua Lü ◽  
Sanchuan Yu ◽  
...  
Keyword(s):  
Reverse Osmosis ◽  
Membrane Module ◽  
Reverse Osmosis Membrane ◽  
Fouling Resistance ◽  
In Situ Modification
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