Acidification and decarbonization in seawater: Potential pretreatment steps for biofouling control in SWRO membranes

Harlev, Noam; Bogler, Anne; Lahav, Ori; Herzberg, Moshe

doi:10.1016/j.desal.2019.06.006

Cited by 8 publications

(7 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both dissolved and immobilized lytic AMPs have previously been demonstrated to display promise for RO membrane protection. , Initial studies were focussed on investigating the general antifouling properties of peptide A against a natural consortium of marine microorganisms to further quantify bioactivity. To replicate a relevant industrial scenario, the marine microbial consortium studied was generated by sampling a biofilm from a fouled industrial SWRO membrane. , The mitigation of microbial biofilm formation using the dissolved peptide was tested in a flow-cell hosting 40 mm glass slides with adhered 5 × 5 mm 2 RO membrane coupons (Figure ). The ability of dissolved peptide A to prevent the establishment of a marine biofilm on polyamide RO membranes over 24 h is presented in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…Finally, the inoculum was vortexed and frozen in liquid nitrogen. Similar inoculum aliquots were stored in a deep freeze of −80 °C as starting cultures for all biofilm experiments as replicated from previous studies …”

Section: Methodsmentioning

confidence: 99%

“…Similar inoculum aliquots were stored in a deep freeze of −80 °C as starting cultures for all biofilm experiments as replicated from previous studies. 34 Flow Cell Fouling Experiments. The flow cell used for monitoring the fouling community establishment is shown in Figure 2.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…To replicate a relevant industrial scenario, the marine microbial consortium studied was generated by sampling a biofilm from a fouled industrial SWRO membrane. 34,58 The mitigation of microbial biofilm formation using the dissolved peptide was tested in a flow-cell hosting 40 mm glass slides with adhered 5 × 5 mm 2 RO membrane coupons (Figure 2). The ability of dissolved peptide A to prevent the establishment of a marine biofilm on polyamide RO membranes over 24 h is presented in Figure 8.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Efficient Prevention of Marine Biofilm Formation Employing a Surface-Grafted Repellent Marine Peptide

Herzberg

Berglin

Eliahu

et al. 2021

ACS Appl. Bio Mater.

Self Cite

View full text Add to dashboard Cite

Creation of surfaces resistant to the formation of microbial biofilms via biomimicry has been heralded as a promising strategy to protect a range of different materials ranging from boat hulls to medical devices and surgical instruments. In our current study, we describe the successful transfer of a highly effective natural marine biofilm inhibitor to the 2D surface format. A series of cyclic peptides inspired by the natural equinatoxin II protein produced by Beadlet anemone (Actinia equine) have been evaluated for their ability to inhibit the formation of a mixed marine microbial consortium on polyamide reverse osmosis membranes. In solution, the peptides are shown to effectively inhibit settlement and biofilm formation in a nontoxic manner down to 1 nM concentrations. In addition, our study also illustrates how the peptides can be applied to disperse already established biofilms. Attachment of a hydrophobic palmitic acid tail generates a peptide suited for strong noncovalent surface interactions and allows the generation of stable noncovalent coatings. These adsorbed peptides remain attached to the surface at significant shear stress and also remain active, effectively preventing the biofilm formation over 24 h. Finally, the covalent attachment of the peptides to an acrylate surface was also evaluated and the prepared coatings display a remarkable ability to prevent surface colonization at surface loadings of 55 ng/cm2 over 48 h. The ability to retain the nontoxic antibiofilm activity, documented in solution, in the covalent 2D-format is unprecedented, and this natural peptide motif displays high potential in several material application areas.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Efficient Prevention of Marine Biofilm Formation Employing a Surface-Grafted Repellent Marine Peptide

Herzberg

Berglin

Eliahu

et al. 2021

ACS Appl. Bio Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Chapter 1 5 Despite large amount of research work on organic fouling and biofouling in RO process, the role of organic compositions in seawater on SWRO biofouling remains unclear, more importantly the interplay between them. Most of previous studies used nutrient broth or acetate as the nutrient source to simulate biofouling (Chong, Wong et al 2008, Siddiqui, Rzechowicz et al 2015, Harlev, Bogler et al 2019, which was not good representative of organics in seawater and might not capture the actual mechanism in SWRO biofouling. Since biopolymers and humic substances were identified as the major organic foulant on RO membrane, it was recommended to reduce the high molecular weight organic content in RO feed to reduce the flux decline (Deng, Ngo et al 2019).…”

Section: Problem Statementmentioning

confidence: 99%

Membrane fouling in seawater reverse osmosis (SWRO) desalination process

Yin¹

View full text Add to dashboard Cite

I would like to express my greatest appreciation to my supervisor and mentor Professor Chong Tzyy Haur. Professor Chong provided me many helps and supports in my research study all the time. I would like to express my sincere gratitude to his patience and motivation. He kept guiding me to the correct direction, and leading me to learn more knowledge in the current research field. I benefited a lot from his openminded view, abundant research knowledge, rigorous academic style, and outstanding academic spirit. Besides my supervisor, I would like to thank my co-mentor Professor Emile R. Cornelissen. He kept guiding me during my PhD life. He always gave me useful advice of my research work, and made my research more rigorous. At the same time, I am also very grateful to Dr. Stanislaus Raditya Suwarno, who provided me many supports when I started my PhD. Thanks to him, I am able to master the experimental setup and analytical instrument. Furthermore, I can transport the skill to others. Also, many thanks go to my colleagues Miss. Tan Hwee Sin who has helped me a lot in the experiment designs and sample preparation in my study. Special thanks to Dr. Li Xin for his patient and kind help. He gave me the greatest help at the most confused stage of my PhD. He was sharing his full experience of research and writing skill to me which helped me to avoid many mistakes and saved lots of time and energy. At the same time, I also want to specially thank to Dr. Ho Jia Shin and Dr. Sim Lee Nuang for their sincere supports and guidance in my PhD study. My appreciation also goes to all the staffs and students from Singapore Membrane Technology Centre (SMTC). I also appreciate that the support from school of Civil & Environmental Engineering (CEE), NTU. Thanks for funding me and support me on my research. Last but not the least, I would like to acknowledge my parents and my girlfriend Miss. Wu who keep encouraging me and motivating me all the time in my whole PhD life.

show abstract

Preparation and characterization of antibiofouling membranes

Wang,

Dai,

2024

Antibiofouling Membranes for Water and Wastewater Treatment

View full text Add to dashboard Cite

Acidification and decarbonization in seawater: Potential pretreatment steps for biofouling control in SWRO membranes

Cited by 8 publications

References 24 publications

Efficient Prevention of Marine Biofilm Formation Employing a Surface-Grafted Repellent Marine Peptide

Efficient Prevention of Marine Biofilm Formation Employing a Surface-Grafted Repellent Marine Peptide

Membrane fouling in seawater reverse osmosis (SWRO) desalination process

Preparation and characterization of antibiofouling membranes

Contact Info

Product

Resources

About