The effect of amino functionalized and polyethylene glycol grafted nanodiamond on anti-biofouling properties of cellulose acetate membrane in membrane bioreactor systems

Etemadi, Habib; Yegani, Reza; Seyfollahi, Mahdi

doi:10.1016/j.seppur.2017.01.013

Cited by 115 publications

(53 citation statements)

References 48 publications

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“…In another work, inclusion of NDs 0.5 wt % in cellulose acetate membranes induced maximum improvement in hydrophilicity and higher critical flux and anti-fouling properties were obtained with inclusion of PEG functionalized NDs [397]. A good degree of oxidation can be obtained also with reactive gasses alogenated [398].…”

Section: Discussionmentioning

confidence: 90%

“…There are two main routes to perform the functionalization of the ND surfaces: wet chemical processes at low temperatures or gas treatment at high temperatures [384,385] which are illustrated in Figure 13. In another work, inclusion of NDs 0.5 wt % in cellulose acetate membranes induced maximum improvement in hydrophilicity and higher critical flux and anti-fouling properties were obtained with inclusion of PEG functionalized NDs [397]. A good degree of oxidation can be obtained also with reactive gasses alogenated [398].…”

Section: Nanodiamondsmentioning

confidence: 90%

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The Role of Functionalization in the Applications of Carbon Materials: An Overview

Speranza

2019

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The carbon-based materials (CbMs) refer to a class of substances in which the carbon atoms can assume different hybridization states (sp 1 , sp 2 , sp 3 ) leading to different allotropic structures -. In these substances, the carbon atoms can form robust covalent bonds with other carbon atoms or with a vast class of metallic and non-metallic elements, giving rise to an enormous number of compounds from small molecules to long chains to solids. This is one of the reasons why the carbon chemistry is at the basis of the organic chemistry and the biochemistry from which life on earth was born. In this context, the surface chemistry assumes a substantial role dictating the physical and chemical properties of the carbon-based materials. Different functionalities are obtained by bonding carbon atoms with heteroatoms (mainly oxygen, nitrogen, sulfur) determining a certain reactivity of the compound which otherwise is rather weak. This holds for classic materials such as the diamond, the graphite, the carbon black and the porous carbon but functionalization is widely applied also to the carbon nanostructures which came at play mainly in the last two decades. As a matter of fact, nowadays, in addition to fabrication of nano and porous structures, the functionalization of CbMs is at the basis of a number of applications as catalysis, energy conversion, sensing, biomedicine, adsorption etc. This work is dedicated to the modification of the surface chemistry reviewing the different approaches also considering the different macro and nano allotropic forms of carbon.C 2019, 5, 84 3 of 45 narrow graphite-like interconnected layers. This leads to a closed pore rigid structure that is chemically inert, hard but brittle [48][49][50].Due to the highly resistant, conductive, and inert network, glassy carbons are utilized in a series of rather different applications. They are utilized as electrodes in solid state batteries and in industrial harsh chemical processes where also high temperatures are involved such as crystallization of CaF2, CdS and ZnS. Glassy carbon can be utilized to manufacture high temperature furnace elements. Due to the chemical inertness, glassy carbons are utilized also in fabrication of protheses. Porous carbon and carbon black are much softer. Generally, in industrial applications important is the extension of the surface which is exposed to the external environment. The porous carbon is characterized by a high specific surface area enhancing the interaction with the external medium. Although it possesses a lower conductivity with respect to glassy carbon, the high porosity and the presence of active sites makes it a good material to fabricate electrodes for applications in electrochemistry [51][52][53] and bioelectrodes for sensing and stimulation [54,55].The same holds for the carbon black mainly utilized as additive in rubbers and polymers to improve their mechanical properties, or as a pigment [56] although new potentialities have been recently envisaged [57].Common to all the forms of carbon which are bri...

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Section: Discussionmentioning

confidence: 90%

Section: Nanodiamondsmentioning

confidence: 90%

The Role of Functionalization in the Applications of Carbon Materials: An Overview

Speranza

2019

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“…A submerged aerobic membrane bioreactor (MBR) setup in laboratory scale was used in this study following a procedure detailed in our previous works . The operational conditions of the MBR are presented in Table .…”

Section: Methodsmentioning

confidence: 99%

“…Obtained results revealed that the presence of both pristine and carboxylated NDs improved thermal, mechanical, and antibacterial characteristics of the membrane, and also, CA/ND‐COOH membrane showed even better properties than CA/ND membrane owing to the better dispersion of carboxylated NDs. Similar results were reported in other work with amino functionalized and PEG‐ND nanoparticles embedded into CA membrane …”

Section: Introductionmentioning

confidence: 99%

High‐density polyethylene membranes embedded with carboxylated and polyethylene glycol‐grafted nanodiamond to be used in membrane bioreactors

Kivi

Alinia

Jafarzadeh

et al. 2019

J of Applied Polymer Sci

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In this work, neat and modified nanodiamond (ND) particles were embedded into high-density polyethylene (HDPE) membranes to improve hydrophilicity and antifouling properties. The membranes were prepared via thermally induced phase separation (TIPS) method and used for pharmaceutical wastewater treatment in membrane bioreactors (MBR) system. To prevent the agglomeration of ND, it was modified using two methods: thermal carboxylation (ND-COOH) and grafting with polyethylene glycol (ND-PEG). Membranes with different concentration of ND-COOH and ND-PEG nanoparticles ranging from 0.00 to 1.00 wt % were prepared and characterized using a set of analyses including water contact angle, pure water flux, tensile strength, differential scanning calorimeter, field emission scanning electron microscopy, and energy dispersive X-ray spectroscopy. It was found that the optimum contents of ND-COOH and ND-PEG nanoparticles were 0.50 wt % and 0.75 wt %, respectively. The interfacial interaction between nanoparticles and HDPE matrix was studied based on Pukanzsky model. To examine the performance of membranes, critical flux, filtration experiment in the MBR, and fouling analysis of membranes were carried out. The results showed that among the fabricated membranes, 0.75 wt % HDPE/ND-PEG membrane had the highest water flux and the best antifouling properties.

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“…PEGylation enhanced the hydrophilicity and biocompatibility, which are especially useful for drug development (Etemadi, Yegani, & Seyfollahi, 2017;Veronese & Pasut, 2005). PEG-based hydrogels have vast applications in medical devices, regenerative medicine tools, controlled release matrices, tissue engineering, wound closure, and wound healing (Biswal, Sahoo, Murthy, Giradkar, & Avari, 2008;Li, AbuBaker, & Shao, 2006;Parlato, Reichert, Barney, & Murphy, 2014).…”

Section: Polyethylene Glycolmentioning

confidence: 99%

Nanodiamond in composite: Biomedical application

Rehman

Houshyar

Wang

2020

J Biomedical Materials Res

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The biocompatibility of materials is the determining factor for them to be applied in biomedical areas. Nanodiamond (ND) has gained increasing interest in this area due to its biocompatibility, ease of surface functionalization and excellent mechanical performance. ND has been widely used to reinforce biopolymers, and the resultant biocomposites have found applications in bone tissue engineering, chemotherapeutic drug delivery, and wound healing. Fluorescent ND, when combined with biopolymers, is serving for bioimaging and sensing applications. Herein, we contribute a description of ND, recent trends in its adoption for biopolymers, functionalization methods, amalgamation techniques of ND with biopolymers, potential applications of these composites in the biomedical field and future perspectives.biocompatibility, biocomposites, biopolymers, nanodiamond, scaffold

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The effect of amino functionalized and polyethylene glycol grafted nanodiamond on anti-biofouling properties of cellulose acetate membrane in membrane bioreactor systems

Cited by 115 publications

References 48 publications

The Role of Functionalization in the Applications of Carbon Materials: An Overview

The Role of Functionalization in the Applications of Carbon Materials: An Overview

High‐density polyethylene membranes embedded with carboxylated and polyethylene glycol‐grafted nanodiamond to be used in membrane bioreactors

Nanodiamond in composite: Biomedical application

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