Preparation and characterization of sulfated carboxymethyl cellulose nanofiltration membranes with improved water permeability

Shao, Lingling; An, Quan‐Fu; Ji, Yan-Li; Zhao, Qiang; Wang, Xue-San; Zhu, Bao‐Ku; Gao, Congjie

doi:10.1016/j.desal.2014.01.025

Cited by 35 publications

(20 citation statements)

References 50 publications

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“…The zeta potential (ζ) of NF membranes was calculated according to the Helmholtz-Smoluchowski equation [19]. Detailed description of measurement procedures can be found elsewhere [21].…”

Section: Characterizationsmentioning

confidence: 99%

“…In this work, the membrane concentration polarization phenomenon could be ignored with high recirculation rate (33 L h À 1 ) and flow velocity (0.12 m s À 1 ) of aqueous solutions and with low operating pressure. Inorganic salt concentrations of permeate and feed solutions were determined through a conductivity meter (DDS-11A, Hangzhou Dongxing InstrumentWorks, China) [21]. All experiments were repeated three times.…”

Section: Nf Membrane Performancementioning

confidence: 99%

“…The surface charge character of NF membranes can be divided into neutral, negatively charged, and positively charged [18]. Currently most of the existing NF membranes are negatively charged, which exhibit lower rejection of multivalent cations and are ineffective in water softening [21]. Therefore, the development of positively charged NF membranes with the excellent multivalent cationic ions rejection represents a key issue for the water softening [30].…”

Section: Introductionmentioning

confidence: 99%

“…There are many methods for preparing NF membranes, such as the phase inversion [14], photo-initiated polymerization [15], chemical cross-linking [16][17][18][19][20][21][22], interfacial polymerization [23][24][25], and electrostatic layer-by-layer (LbL) self-assembly [26][27][28][29], etc. The surface charge character of NF membranes can be divided into neutral, negatively charged, and positively charged [18].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A novel type of polyelectrolyte complex/MWCNT hybrid nanofiltration membranes for water softening

Zhao

et al. 2015

Journal of Membrane Science

Self Cite

102

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“…The zeta potential (ζ) of NF membranes was calculated according to the Helmholtz-Smoluchowski equation [19]. Detailed description of measurement procedures can be found elsewhere [21].…”

Section: Characterizationsmentioning

confidence: 99%

Section: Nf Membrane Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A novel type of polyelectrolyte complex/MWCNT hybrid nanofiltration membranes for water softening

Zhao

et al. 2015

Journal of Membrane Science

Self Cite

102

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“…As comparative study with literature review, Yan et al [11] reported that the zeta potential would only go towards positive charges starting at pH 10 with carboxymethyl cellulose as adsorbent. The reason why recycle paper pulp had different turning point is probably due to the extreme negative charge caused by the carboxyl group on CMC [15]. Also the difference could be attributed to the presence of some chemicals during the paper making process and also the ink and tuner present on waste paper.…”

Section: ) Zeta Potential Testingmentioning

confidence: 99%

Application and Optimization of Using Recycled Pulp for Methylene Blue Removal from Wastewater: A Response Surface Methodology Approach

Hermawan¹,

Bing²,

Salamatinia³

2015

IJESD

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Abstract-One of the main challenges in the industrial world is presence of dyes in water bodies, which can create lots of problems. Researchers have recently focused a lot on removing dyes by use of low cost techniques or waste material. A huge amount of waste paper is daily produced in many places. This study has been conducted to investigate the possibility of using waste paper as an adsorbent to remove methylene blue (MB) dye from water. With total of six variables observed, the experiment was divided into two parts using central composite design, and employing Response Surface Methodology (RSM) by using Design-Expert 6.0.7 Software. After certain optimization following the criteria from software prediction, the highest removal of MB was found to be 95%. Pulped waste paper shows good sorption ability and the optimum conditions were found.Index Terms-Renewability, adsorption, methylene blue, paper pulp, response surface methodology.

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Fabrication of a novel cellulose acetate imprinted membrane assisted with chitosan‐wrapped multi‐walled carbon nanotubes for selective separation of salicylic acid from industrial wastewater

Meng

et al. 2015

J of Applied Polymer Sci

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Highly selective cellulose acetate (CA) blend imprinted membranes for salicylic acid (SA) removal were synthesized by phase inversion technique with chitosan as a functional polymer and chitosan-wrapped multi-walled carbon nanotubes (CHIwrapped MWCNTs) as the additives. The surface and cross-sectional morphology of membranes were strongly affected by the amount of CHI-wrapped MWCNTs. As compared to M 1 -MIM, M 2 -MIM, and M 4 -MIM, the M 3 -MIM with 2.0 wt % CHI-wrapped MWCNTs showed higher membrane flux, faster kinetic, binding capacity and better selectivity for SA. The experimental data of adsorption kinetic were well fitted to the pseudo-second-order kinetic model by multiple regression analysis. The M 3 -MIM had the maximum adsorption capacity for SA. The selectivity coefficients of SA to p-hydroxybenzoic acid (p-HB) and acetylsalicylic acid (ASA) over M 3 -MIM were 6.3090 and 6.0019, respectively, showing that M 3 -MIM had excellent binding affinity and selectivity for separation of SA from SA-contained aqueous solution.

show abstract

Preparation and characterization of sulfated carboxymethyl cellulose nanofiltration membranes with improved water permeability

Cited by 35 publications

References 50 publications

A novel type of polyelectrolyte complex/MWCNT hybrid nanofiltration membranes for water softening

A novel type of polyelectrolyte complex/MWCNT hybrid nanofiltration membranes for water softening

Application and Optimization of Using Recycled Pulp for Methylene Blue Removal from Wastewater: A Response Surface Methodology Approach

Fabrication of a novel cellulose acetate imprinted membrane assisted with chitosan‐wrapped multi‐walled carbon nanotubes for selective separation of salicylic acid from industrial wastewater

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