Evaluation of Different Reverse Osmosis Membranes for Textile Dyeing and Finishing Wastewater Reuse

Wei, Chun-Hai; Lao, Yequan; Ouyang, Rulu; Zhang, Guorui; Huang, Guijing; Deng, Feilong; Tan, Qicheng; Lin, Guojian; Hong, Zhou

doi:10.3390/membranes13040420

Cited by 4 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is worth mentioning that the membranes produced in this study demonstrate water permeabilities of approximately 1 LMH/bar, falling within the reported range of RO membranes, which range from 0.9 to 3 LMH/bar [ 60 , 61 , 62 ]. On the other hand, the achieved salt rejection of approximately 95–96% may initially seem relatively low compared to the >99% achieved in commercial RO membranes.…”

Section: Resultssupporting

confidence: 79%

Incorporation of an Intermediate Polyelectrolyte Layer for Improved Interfacial Polymerization on PAI Hollow Fiber Membranes

Restrepo,

Mohammadifakhr,

Kamp

et al. 2023

Membranes

View full text Add to dashboard Cite

In a single-step spinning process, we create a thin-walled, robust hollow fiber support made of Torlon® polyamide-imide featuring an intermediate polyethyleneimine (PEI) lumen layer to facilitate the integration and covalent attachment of a dense selective layer. Subsequently, interfacial polymerization of m-phenylenediamine and trimesoyl chloride forms a dense selective polyamide (PA) layer on the inside of the hollow fiber. The resulting thin-film composite hollow fiber membranes show high NaCl rejections of around 96% with a pure water permeability of 1.2 LMH/bar. The high success rate of fabricating the thin-film composite hollow fiber membrane proves our hypothesis of a supporting effect of the intermediate PEI layer on separation layer formation. This work marks a step towards the development of a robust method for the large-scale manufacturing of thin-film composite hollow fiber membranes for reverse osmosis and nanofiltration.

show abstract

Section: Resultssupporting

confidence: 79%

Incorporation of an Intermediate Polyelectrolyte Layer for Improved Interfacial Polymerization on PAI Hollow Fiber Membranes

Restrepo,

Mohammadifakhr,

Kamp

et al. 2023

Membranes

View full text Add to dashboard Cite

show abstract

“…Reverse osmosis (RO) has become the dominant technology in supplying freshwater from unlimited seawater [ 1 , 2 ]. However, organic fouling caused by dissolved organic matter (DOM) is still a significant technical obstacle in seawater RO desalination [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Coagulation-Integrated Sand Filtration and Ultrafiltration for Seawater Reverse Osmosis Pretreatment

Li,

Xie,

et al. 2024

Membranes

View full text Add to dashboard Cite

The removal of dissolved organic matter (DOM) from seawater before the reverse osmosis (RO) processes is crucial for alleviating organic fouling of RO membranes. However, research is still insufficiently developed in the comparison of the effectiveness of integrating coagulation with ultrafiltration (UF) or sand filtration (SF) in the pretreatment stage of seawater reverse osmosis (SWRO) for the removal of DOM. In this study, we investigated the effect of pretreatment technologies on RO fouling caused by DOM in seawater, including the integration of coagulation and sand filtration (C-S pretreatment) and the integration of coagulation and ultrafiltration (C-U pretreatment). Both integrated pretreatments achieved comparable DOM removal rates (70.2% for C-U and 69.6% for C-S), and C-S exhibited enhanced removal of UV-absorbing compounds. Although C-U was more proficient in reducing the silt density index (below 2) compared to C-S (above 3) and improved the elimination of humic acid-like organics, it left a higher proportion of tyrosine-protein-like organics, soluble microbial by-product-like organics, and finer organics in the effluent, leading to the formation of a dense cake layer on RO membrane and a higher flux decline. Therefore, suitable technologies should be selected according to specific water conditions to efficiently mitigate RO membrane fouling.

show abstract

“…The RO-rejected water (ROR) can be an environmental issue, i.e., because of the high TDS load of metals and organic and inorganic compounds [19][20][21]. While RO technology is often used in industries like textiles, chemicals, and food production to obtain clean water, it is costly and can have negative impacts on the environment due to the high volume of rejected water that is often released into bodies of water without further treatment, leading to increased TDS, metals, and other contaminants and resulting in the contamination of water bodies [22,23].…”

Section: Introductionmentioning

confidence: 99%

Insight on the Properties of Pumice Mineral for the Combined Adsorption Distillation of Membrane Reject Water

Qureshi,

Gadhi,

Khokhar

et al. 2023

Minerals

View full text Add to dashboard Cite

The current study evaluated the use of pumice, a volcanic mineral and common sand, in treating reverse osmosis membrane reject water (ROR) using a novel combined adsorption distillation (CAD) method. The CAD method is developed to separate the dissolved solids through adsorption distillation, i.e., leaving the vaporized distillate as freshwater and concentrated brine. The adsorption potential of pumice and sand was investigated at different adsorbent doses, i.e., 2, 5, and 10 g, and consecutive CAD adsorbent backwashing cycles. The improved results were achieved at a 10 g pumice dose. However, its adsorption efficiency declined in longer CAD cycles, i.e., due to the separated deposition of solids. After backwashing, the adsorbed and accumulated salts were slightly removed, and pumice adsorption capacity was maintained for up to 20 cycles of CAD. The properties of the pumice, i.e., before and after five CAD cycles and after backwashing, were characterized with scanning electron microscopic (SEM), elemental disruptive spectroscopy (EDS), and X-ray diffraction (XRD), which revealed that the porous structure of the pumice was completely accumulated with deposits of ionic salts, which were slightly washed away after backwashing, but accumulation remained continued in post-CAD cycles. The explored method revealed a high potential of pumice in water filtration.

show abstract

Evaluation of Different Reverse Osmosis Membranes for Textile Dyeing and Finishing Wastewater Reuse

Cited by 4 publications

References 28 publications

Incorporation of an Intermediate Polyelectrolyte Layer for Improved Interfacial Polymerization on PAI Hollow Fiber Membranes

Incorporation of an Intermediate Polyelectrolyte Layer for Improved Interfacial Polymerization on PAI Hollow Fiber Membranes

Comparison of Coagulation-Integrated Sand Filtration and Ultrafiltration for Seawater Reverse Osmosis Pretreatment

Insight on the Properties of Pumice Mineral for the Combined Adsorption Distillation of Membrane Reject Water

Contact Info

Product

Resources

About