A chitosan/dopamine-TiO2 composite nanofiltration membrane for antifouling in water purification

Cellulose ◽  
2021 ◽  
Author(s):  
Dong Wang ◽  
Junkang Lin ◽  
Jianhua Huang ◽  
Hui Zhang ◽  
Shan Lin ◽  
...  
Keyword(s):  
Water Purification ◽  
Nanofiltration Membrane

scholarly journals Fabrication of High-Performance Thin-Film Composite Nanofiltration Membrane by Dynamic Calcium-Carboxyl Intra-Bridging during Post-Treatment

Membranes ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 137
Author(s):  
Hongyi Han ◽  
Ruobin Dai ◽  
Zhiwei Wang
Keyword(s):  
Thin Film ◽  
Water Purification ◽  
High Performance ◽  
Rejection Rate ◽  
Post Treatment ◽  
Nanofiltration Membrane ◽  
Film Composite ◽  
Thin Film Composite ◽  
Post Modification

Widespread applications of nanofiltration (NF) and reverse osmosis (RO)-based processes for water purification and desalination call for high-performance thin-film composite (TFC) membranes. In this work, a novel and facile modification method was proposed to fabricate high-performance thin-film composite nanofiltration membrane by introducing Ca2+ in the heat post-treatment. The introduction of Ca2+ induced in situ Ca2+-carboxyl intra-bridging, leading to the embedment of Ca2+ in the polyamide (PA) layer. This post modification enhanced the hydrophilicity and surface charge of NF membranes compared to the pristine membrane. More interestingly, the modified membrane had more nodules and exhibited rougher morphology. Such changes brought by the addition of Ca2+ enabled the significant increase of water permeability (increasing from 17.9 L·m−2·h−1·bar−1 to 29.8 L·m−2·h−1·bar−1) while maintaining a high selectivity (Na2SO4 rejection rate of 98.0%). Furthermore, the intra-bridging between calcium and carboxyl imparted the NF membranes with evident antifouling properties, exhibiting milder permeability decline of 4.2% (compared to 16.7% of NF-control) during filtration of sodium alginate solution. The results highlight the potential of using Ca2+-carboxyl intra-bridging post-treatment to fabricate high-performance TFC membranes for water purification and desalination.

Advanced nanofiltration membrane fabricated on the porous organic cage tailored support for water purification application

2020 ◽  
Vol 230 ◽  
pp. 115845 ◽  
Author(s):  
Zhe Zhai ◽  
Na Zhao ◽  
Jiahui Liu ◽  
Wenjing Dong ◽  
Peng Li ◽  
...  
Keyword(s):  
Water Purification ◽  
Nanofiltration Membrane

scholarly journals Development of Copper-Aluminum Layered Double Hydroxide in Thin Film Nanocomposite Nanofiltration Membrane for Water Purification Process

2019 ◽  
Vol 7 ◽  
Author(s):  
Muhammad Hanis Tajuddin ◽  
Norhaniza Yusof ◽  
Ihsan Wan Azelee ◽  
Wan Norharyati Wan Salleh ◽  
Ahmad Fauzi Ismail ◽  
...  
Keyword(s):  
Thin Film ◽  
Layered Double Hydroxide ◽  
Water Purification ◽  
Nanofiltration Membrane ◽  
Purification Process ◽  
Copper Aluminum ◽  
Double Hydroxide ◽  
Thin Film Nanocomposite

Preparation of fouling resistant and highly perm-selective novel PSf/GO-vanillin nanofiltration membrane for efficient water purification

2021 ◽  
pp. 126744
Author(s):  
Sudesh Yadav ◽  
Ibrar Ibrar ◽  
Akshaya K. Samal ◽  
Ali Altaee ◽  
Sébastien Déon ◽  
...  
Keyword(s):  
Water Purification ◽  
Nanofiltration Membrane

scholarly journals Graphene oxide polypiperazine-amide nanofiltration membrane for improving flux and anti-fouling in water purification

RSC Advances ◽  
2016 ◽  
Vol 6 (85) ◽  
pp. 82174-82185 ◽  
Author(s):  
Jin Wang ◽  
Changwei Zhao ◽  
Tao Wang ◽  
Zhen Wu ◽  
Xiang Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Water Purification ◽  
Nanofiltration Membrane

Ultrathin Graphene Nanofiltration Membrane for Water Purification

2013 ◽  
Vol 23 (29) ◽  
pp. 3693-3700 ◽  
Author(s):  
Yi Han ◽  
Zhen Xu ◽  
Chao Gao
Keyword(s):  
Water Purification ◽  
Nanofiltration Membrane

A positively charged composite loose nanofiltration membrane for water purification from heavy metals

2020 ◽  
Vol 611 ◽  
pp. 118205 ◽  
Author(s):  
Mohammad Peydayesh ◽  
Toraj Mohammadi ◽  
Sohail Kordmirza Nikouzad
Keyword(s):  
Heavy Metals ◽  
Water Purification ◽  
Nanofiltration Membrane ◽  
Positively Charged
Sign in / Sign up

Export Citation Format

Share Document