scholarly journals Hydrophylicity Enhancement of Modified Cellulose Acetate Membrane to Improve the Membrane Performance in Produced Water Treatment

2018 ◽  
Vol 156 ◽  
pp. 08003 ◽  
Author(s):  
Tutuk Djoko Kusworo ◽  
Danny Soetrisnanto ◽  
Cynthia Santoso ◽  
Tyas Dwi Payanti ◽  
Dani Puji Utomo
Keyword(s):  
Water Treatment ◽  
Produced Water ◽  
Uv Light ◽  
Light Exposure ◽  
Membrane Surface ◽  
Asymmetric Structure ◽  
Dense Layer ◽  
Cellulose Acetate Membrane ◽  
Permeate Flux ◽  
Produced Water Treatment

Produced water is a wastewater generated from petroleum industry with high concentration of pollutants such as Total Dissolved Solid, Organic content, and Oil and grease. Membrane technology has been currently applied for produced water treatment due to its efficiency, compact, mild and clean process. The main problem of produced water using membrane is fouling on the membrane surface which causes on low permeate productivity. This paper is majority focused on the improvement of anti-fouling performance through several modifications to increase CA membrane hydrophilicity. The membrane was prepared by formulating the dope solution consists of 18 wt-% CA polymer, acetone, and PEG additive (3 wt-%, 5 wt-%, and 7 wt-%). The membranes are casted using NIPS method and being irradiated under UV light exposure. The SEM images show that parepared membrane has asymmetric structure consist of dense layer, intermediete layer, and finger-like support layer. The filtration test shows that PEG addition increase the membrane hydrophilicity and the permeate flux increases. UV light exposure on the membrane improves the membrane stability and hydrophilicity. The imrpovement of membrane anti-fouling performance is essential to achieve the higher productivity without lowering its pollutants rejection.

ENHANCED ANTI-FOULING BEHAVIOR AND PERFORMANCES OF NANO HYBRID PES-SIO2 AND PES-ZNO MEMBRANES FOR PRODUCED WATER TREATMENT

2017 ◽  
Vol 79 (6) ◽  
Author(s):  
Tutuk Djoko Kusworo ◽  
Ahmad Fauzi Ismail ◽  
Nita Aryanti ◽  
Widayat Widayat ◽  
Qudratun Qudratun ◽  
...  
Keyword(s):  
Water Treatment ◽  
High Efficiency ◽  
Produced Water ◽  
Membrane Surface ◽  
Hybrid Membrane ◽  
Nano Particles ◽  
Inorganic Filler ◽  
Ethanol Mixture ◽  
Produced Water Treatment ◽  
Pes Membrane

This research is implemented primarily to obtain the enhanced performance in terms of permeability, solute rejection and anti-fouling behavior of PES membrane towards produced water treatment by incorporating nano-SiO2 and nano-ZnO as nano inorganic filler. The fabricated membrane was modified through UV irradiation and immersion in Acetone-Ethanol mixture. The effect of several modification treatments is investigated in this study. Nano hybrid PES-SiO2 and PES-ZnO membrane were prepared using Loeb-Sourirajan methods (NIPS phase inversion). The casted membrane was exposed under UV lights for 2 min and followed by immersion in Acetone-Ethanol mixture for 24 h. The result of SEM and FTIR analysis confirmed that the nano particles incorporation change the membrane surface structure, while UV treatment and Ac-Et immersion significantly enhanced the hydrophilicity of membrane material. Nano hybrid membrane displayed high efficiency of oil removal up to >99%, the immersion in the Ac-Et increased the water permeability about 20% and caused slightly decrease in solute rejection. The modified nano hybrid membrane performed an anti-fouling behavior in produced water filtration process.

scholarly journals Enhancement of separation performance of asymmetric cellulose acetate membrane for produced water treatment using response surface methodology

2018 ◽  
Vol 24 (2) ◽  
pp. 139-147 ◽  
Author(s):  
Tutuk Kusworo ◽  
Hadiyanto Hadiyanto ◽  
Deariska Deariska ◽  
Nugraha Lutfi
Keyword(s):  
Response Surface Methodology ◽  
Polyethylene Glycol ◽  
Water Treatment ◽  
Cellulose Acetate ◽  
Response Surface ◽  
Produced Water ◽  
Separation Performance ◽  
Cellulose Acetate Membrane ◽  
Produced Water Treatment ◽  
Dope Solution

Produced water is the wastewater generated from the process of exploration in oil and gas production, which needs special treatment. A membrane with cellulose acetate is widely used for produced water treatment, but further developments and improvements are still required. Therefore, it is important to determine the factors of separation efficiency of an ultrathin cellulose acetate membrane by assessing the influence of the composition of the dope solution. The response surface methodology was employed to determine the optimal conditions for this application. The investigations were conducted by varying the cellulose acetate polymer concentration at 18-20 wt.%, polyethylene glycol 4000 at 2-3 wt.% and nonsolvent addition at 3-5 wt.%. The evaluation of membrane performance for the produced water treatment was performed in a dead-end filtration cell with permeate water flux and rejection parameters for turbidity, total dissolved solids, Ca2+, Mg2+ and sulfides of produced water upstream and downstream of the membrane. The optimal composition of the dope solution was: 19 wt.% of cellulose acetate, 3 wt.% of polyethylene glycol, and 5.67 wt.% of non-solvent.

scholarly journals Hole-Type Spacers for More Stable Shale Gas-Produced Water Treatment by Forward Osmosis

Membranes ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 34
Author(s):  
Jawad AlQattan ◽  
Youngjin Kim ◽  
Sarah Kerdi ◽  
Adnan Qamar ◽  
Noreddine Ghaffour
Keyword(s):  
Water Treatment ◽  
Shale Gas ◽  
Membrane Fouling ◽  
Produced Water ◽  
Membrane Surface ◽  
Forward Osmosis ◽  
Solute Flux ◽  
Cleaning Efficiency ◽  
Flux Decline ◽  
Produced Water Treatment

An appropriate spacer design helps in minimizing membrane fouling which remains the major obstacle in forward osmosis (FO) systems. In the present study, the performance of a hole-type spacer (having holes at the filament intersections) was evaluated in a FO system and compared to a standard spacer design (without holes). The hole-type spacer exhibited slightly higher water flux and reverse solute flux (RSF) when Milli-Q water was used as feed solution and varied sodium chloride concentrations as draw solution. During shale gas produced water treatment, a severe flux decline was observed for both spacer designs due to the formation of barium sulfate scaling. SEM imaging revealed that the high shear force induced by the creation of holes led to the formation of scales on the entire membrane surface, causing a slightly higher flux decline than the standard spacer. Simultaneously, the presence of holes aided to mitigate the accumulation of foulants on spacer surface, resulting in no increase in pressure drop. Furthermore, a full cleaning efficiency was achieved by hole-type spacer attributed to the micro-jets effect induced by the holes, which aided to destroy the foulants and then sweep them away from the membrane surface.

Cost-Efficient De-Bottlenecking of Produced Water Treatment Systems through the Application of a Single Technology, Eliminating the Need for Hydrocyclones and Degassing Drums

2021 ◽  
Author(s):  
Steinar Asdahl ◽  
Johann Jansen van Rensburg ◽  
Martin Einarson Waag ◽  
Rune Glenna Nilssen
Keyword(s):  
Water Treatment ◽  
Produced Water ◽  
Separation Efficiency ◽  
Water System ◽  
Treatment Technology ◽  
Two Stage ◽  
Water Separation ◽  
Design Capacity ◽  
New Process ◽  
Produced Water Treatment

Abstract Traditionally, produced water from production separators is handled by multiple steps and different technologies in order to meet the required quality for either discharge or reinjection of the water. The development of the latest Compact Flotation Unit (CFU) technology has unlocked the potential for savings on cost, complexity, footprint and weight for the produced water treatment system. The developed CFU technology has proven applicable through field testing as a single treatment technology for reducing Oil-in-Water (OiW) content directly from tie-in at separator and still meet stringent requirements for outlet OiW quality. Field tests were conducted with inlet OiW concentration ranging from 200-2000 ppm, achieving results in the range 2.5 to 21 ppm only with a two-stage latest generation CFU. Compared to a traditional produced water system setup consisting of de-oiling hydrocyclones and a horizontal degassing vessel, the savings in footprint and operational weight is estimated to 54 % and 53 % respectively utilizing a two-stage CFU for a system with a design capacity of 76.000 BWPD. Furthermore, the development of the latest generation CFU technology has enabled the retrofit concept, incorporating the developed CFU internals into existing gravity separation based produced water vessels, converting them to more efficient flotation vessels with increased capacity. For brownfield and debottlenecking applications, operators are challenged by increasing water cut from maturing wells, and as a result exceeding the facilities design capacity for produced water treatment. This challenge is often further reinforced by increasingly stricter environmental legislation for OiW content for discharge or re-injection. The retrofit concept will offer a highly cost-, footprint- and weight-efficient solutions to these challenges utilizing existing vessels. Benefits of the retrofit concept: Bring proven and unique performance of the technology to other produced water separation vessels helping the operators improve the separation efficiency and increase throughput while meeting discharge requirementsShort execution time compared to installation of new process equipmentLow cost compared to installation of new process equipmentUtilization of existing equipment saves valuable footprint.

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