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Membranes, Volume 11, Issue 12

December 2021 - 92 articles

Cover Story: Water-based solutions of sodium salts of naphthenic acids usually include an excessive alkali, resulting in a high pH value. Bipolar electrodialysis can convert sodium naphthenates into naphthenic acids, but up to a pH of 6.5, the decrease in pH is due to the removal of alkali, which implies that some part of electricity is wasted. Additionally, naphthenate anions strongly bind with anion-exchange membranes, reducing their conductivity to zero. This work proposes bilayer membranes with better electrical conductivity, a higher current efficiency for hydroxyl ions, and a lower tendency to be poisoned than commercial membranes. Modified membranes enable the removal of excess alkali in conventional electrodialysis modules, thus reducing the operational and capital costs of processing the sodium naphthenate solution.View this paper
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Articles (92)

  • Review
  • Open Access
80 Citations
11,572 Views
36 Pages

Recent Progress on Nanomaterial-Based Membranes for Water Treatment

  • Majeda Khraisheh,
  • Salma Elhenawy,
  • Fares AlMomani,
  • Mohammad Al-Ghouti,
  • Mohammad K. Hassan and
  • Bassim H. Hameed

20 December 2021

Nanomaterials have emerged as the new future generation materials for high-performance water treatment membranes with potential for solving the worldwide water pollution issue. The incorporation of nanomaterials in membranes increases water permeabil...

  • Article
  • Open Access
3 Citations
3,270 Views
16 Pages

Effects of NH3 Plasma and Mg Doping on InGaZnO pH Sensing Membrane

  • Chyuan-Haur Kao,
  • Chia-Shao Liu,
  • Shih-Ming Chan,
  • Chih-Chen Kuo,
  • Shang-Che Tsai,
  • Ming-Ling Lee and
  • Hsiang Chen

20 December 2021

In this study, the effects of magnesium (Mg) doping and Ammonia (NH3) plasma on the pH sensing capabilities of InGaZnO membranes were investigated. Undoped InGaZnO and Mg-doped pH sensing membranes with NH3 plasma were examined with multiple material...

  • Article
  • Open Access
12 Citations
4,789 Views
12 Pages

Fabrication of Suspended PMMA-Graphene Membrane for High Sensitivity LC-MEMS Pressure Sensor

  • Norliana Yusof,
  • Badariah Bais,
  • Jumril Yunas,
  • Norhayati Soin and
  • Burhanuddin Yeop Majlis

20 December 2021

The LC-MEMS pressure sensor is an attractive option for an implantable sensor. It senses pressure wirelessly through an LC resonator, eliminating the requirement for electrical wiring or a battery system. However, the sensitivity of LC-MEMS pressure...

  • Article
  • Open Access
13 Citations
4,314 Views
13 Pages

20 December 2021

Polyvinyl alcohol (PVA) nanofibrous membrane, consisting of separately encapsulated glucose oxidase (GOx) and glucose (Glu) nanofibers, was prepared via simultaneously electrospinning PVA/GOx and PVA/Glu dopes. The as-prepared pristine membrane could...

  • Article
  • Open Access
4 Citations
4,064 Views
19 Pages

Poly(ethylene glycol) Diacrylate Iongel Membranes Reinforced with Nanoclays for CO2 Separation

  • Ana R. Nabais,
  • Rute O. Francisco,
  • Vítor D. Alves,
  • Luísa A. Neves and
  • Liliana C. Tomé

20 December 2021

Despite the fact that iongels are very attractive materials for gas separation membranes, they often show mechanical stability issues mainly due to the high ionic liquid (IL) content (≥60 wt%) needed to achieve high gas separation performances. Th...

  • Article
  • Open Access
8 Citations
3,242 Views
9 Pages

19 December 2021

In this paper, the transport of iron(III) from iron(III)-manganese(II)-hydrochloric acid mixed solutions, coming from the treatment of spent alkaline batteries through a flat-sheet supported liquid membrane, is investigated (the carrier phase being o...

  • Article
  • Open Access
15 Citations
4,860 Views
11 Pages

Cytochrome P450 and P-gp Mediated Herb-Drug Interactions and Molecular Docking Studies of Garcinol

  • Lavanya Bolla,
  • Pratima Srivastava,
  • Velayutham Ravichandiran and
  • Satheesh Kumar Nanjappan

19 December 2021

Garcinol is an active constituent of Garcinia indica and Garcinia cambogia. Recent studies have proven that garcinol has anti-inflammatory, anti-cancer, and anti-oxidant activities. The objective of this study was to evaluate the inhibitory effects o...

  • Article
  • Open Access
5 Citations
3,208 Views
15 Pages

19 December 2021

Nanoparticle (NP)–cell interaction mediated by receptor–ligand bonds is a crucial phenomenon in pathology, cellular immunity, and drug delivery systems, and relies strongly on the shape of NPs and the stiffness of the cell. Given this sig...

  • Article
  • Open Access
9 Citations
3,748 Views
29 Pages

18 December 2021

Calcium (Ca2+) plays a central role in the excitation and contraction of cardiac myocytes. Experiments have indicated that calcium release is stochastic and regulated locally suggesting the possibility of spatially heterogeneous calcium levels in the...

  • Article
  • Open Access
10 Citations
3,124 Views
12 Pages

Novel Surrogates for Membrane Fouling and the Application of Support Vector Machine in Analyzing Fouling Mechanism

  • Xianghao Meng,
  • Fukuan Wang,
  • Shujuan Meng,
  • Rui Wang,
  • Zhongyuan Mao,
  • Yue Li,
  • Meifeng Yu,
  • Xuye Wang,
  • Qian Zhao and
  • Linyan Yang

18 December 2021

It is difficult to recognize specific fouling mechanisms due to the complexity of practical feed water, thus the current studies usually employ foulant surrogates to carry out research, such as alginate and xanthan gum. However, the representativenes...

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Membranes - ISSN 2077-0375