A new approach to membrane and thermal seawater desalination processes using nanofiltration membranes (Part 1)

Hassan, Ata M.; Al-Sofi, Mohammad A.K.; Al-Amoudi, Ahmed S.; Jamaluddin, A. T. M.; Farooque, A. Mohammed; Rowaili, A.; Dalvi, Abdul Ghani I.; Kither, N. M.; Mustafa, Ghulam M.; Al-Tisan, Ibrahim

doi:10.1016/s0011-9164(98)00079-4

Cited by 196 publications

(60 citation statements)

References 9 publications

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“…7.5 -9.5 Source: [18,36,55,56,87,88] It is assumed that cleaning or replacement takes place simultaneously for all passes, there are no pressure losses from pump to membrane, every pass contains the same number of membrane modules, = 2000, cleaning is performed every 6 months, replacement is recommended every 5 years, and the annual operation is 300 days a year (Table 3). The electricity charge, , has a value of 0.08 $/kWh to accommodate any future increments from the U.S Energy Information Administration [91] review and to consider literature values [36].…”

Section: Given Datamentioning

confidence: 99%

Optimal design of water treatment processes

Koleva

Polykarpou

Liu

et al. 2016

Desalination and Water Treatment

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Predicted water shortages assign water treatment a leading role in improving water resources management. One of the main challenges associated with the processes remains early stage design of techno-economically optimised purification. This work addresses the current gap by undertaking a whole-system approach of flowsheet synthesis for the production of water at desired purity at minimum overall cost. The optimisation problem was formulated as a mixed integer non-linear programming (MINLP) model. Two case studies were presented which incorporated the most common commercial technologies and the major pollution indicators, such as chemical oxygen demand (COD), dissolved organic carbon (DOC), total suspended solids (TSS) and total dissolved solids (TDS).The results were analysed and compared to existing guidelines in order to examine the applicability of the proposed approach.

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Section: Given Datamentioning

confidence: 99%

Optimal design of water treatment processes

Koleva

Polykarpou

Liu

et al. 2016

Desalination and Water Treatment

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“…NF membranes extend the applications of membrane processes and are considered promising for many future applications, including water treatment, wastewater reuse [1], and desalination applications [2]. Moreover, NF membrane processes have many desirable features such as low operation pressure, high flux, high retention of multivalent anion salts and dissolved organic molecular compounds [3] with relatively low molecular weight (200-1,000 g mol −1 ), relatively low investment, operation, and low maintenance costs.…”

Section: Introductionmentioning

confidence: 99%

Rejection of salt mixtures from high saline by nanofiltration membranes

Al-Zoubi

Omar

2009

Korean J. Chem. Eng.

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Nanofiltration (NF) membranes have recently been employed as pretreatment unit operations in seawater desalination processes and as partial demineralization to seawater. The present paper investigates the performance of selected commercial NF membranes to reject salts of high concentrations at salinity levels representative of brackish and sea water. Two commercial nanofiltration membranes (NF90 and NF270) have been investigated in detail to study their performance in filtering aqueous solutions containing different salt mixtures in a cross-flow NF membrane process within the pressure range from 4 to 9 bar. Spiegler-Kedem model (SKM) was used to fit the experimental data of rejection with the permeate flux. The results showed that NF90 membrane was shown to have a distinct ability to reject both monovalent and divalent ions of all investigated mixtures with very reasonable values but with relatively low flux. This will make NF90 more suitable for the application in the pretreatment of desalination processes. On the other hand, NF270 can reject monovalent ions at relatively low values and divalent ions at reasonable values, but at very high permeate flux. The SKM model only fitted well the experimental data of divalent ions in salt mixture. Based on the evaluation of the overall performance of NF90 and NF270 membranes, their distinct ability to reject salts at high salinity from seawater is considered an advantage in the field of pretreatment of seawater feed to desalination units.

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“…The NF270 membrane had a rejection between 11 and 29 %, while the NF30 membrane had rejections ranging from 3 to 6 %. Hassan et al (1998) used NF as a pretreatment to RO for seawater and found that Ca 2? decreased from 481 to 93 mg/L, Mg 2?…”

Section: Nanofiltrationmentioning

confidence: 99%

Bench-Scale and Pilot-Scale Treatment Technologies for the Removal of Total Dissolved Solids from Coal Mine Water: A Review

Pinto¹,

Al-Abed

Balz³

et al. 2015

Mine Water Environ

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Coal mine water (CMW) is typically treated to remove suspended solids, acidity, and soluble metals, but high concentrations of total dissolved solids (TDS) have been reported to impact the environment at several CMW discharge points. Consequently, various states have established TDS wastewater regulations and the US EPA has proposed a benchmark conductivity limit to reduce TDS impacts in streams near mining sites. Traditional CMW treatment effectively removes some TDS components, but is not effective in removing major salt ions due to their higher solubility. This paper describes the basic principles, effectiveness, advantages, and disadvantages of various TDS removal technologies (adsorption, bioremediation, capacitive deionization, desalination, distillation, electrochemical ion exchange, electrocoagulation, electrodialysis, ion exchange, membrane filtration, precipitation, and reverse osmosis) that have at least been tested in benchand pilot-scale experiments.

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A new approach to membrane and thermal seawater desalination processes using nanofiltration membranes (Part 1)

Cited by 196 publications

References 9 publications

Optimal design of water treatment processes

Optimal design of water treatment processes

Rejection of salt mixtures from high saline by nanofiltration membranes

Bench-Scale and Pilot-Scale Treatment Technologies for the Removal of Total Dissolved Solids from Coal Mine Water: A Review

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