ChemInform Abstract: Highly Efficient Photocatalysts and Continuous-Flow Photocatalytic Reactors for Degradation of Organic Pollutants in Wastewater

ChemInform ◽  
2016 ◽  
Vol 47 (44) ◽  
Author(s):  
Sujie Chang ◽  
Xiaoqiu Yang ◽  
Yuanhua Sang ◽  
Hong Liu
Keyword(s):  
Organic Pollutants ◽  
Continuous Flow ◽  
Highly Efficient ◽  
Photocatalytic Reactors

Highly efficient photodegradation of various organic pollutants in water: Rational structural design of photocatalyst via thiol-ene click reaction

2020 ◽  
Vol 381 ◽  
pp. 122631 ◽  
Author(s):  
Fei Liu ◽  
Yibing Sun ◽  
Jiayu Gu ◽  
Qianhong Gao ◽  
Dongping Sun ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Structural Design ◽  
Click Reaction ◽  
Highly Efficient

Electrospun-based TiO2 nanofibers for organic pollutant photodegradation: a comprehensive review

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Khee Chung Hui ◽  
Hazwani Suhaimi ◽  
Nonni Soraya Sambudi
Keyword(s):  
Visible Light ◽  
Organic Pollutants ◽  
Organic Pollutant ◽  
Hollow Fibers ◽  
Promising Alternative ◽  
Tio2 Nanofibers ◽  
As Doping ◽  
Secondary Pollutants ◽  
Photocatalytic Reactors ◽  
Light Area

Abstract Titanium dioxide (TiO2) is commonly used as a photocatalyst in the removal of organic pollutants. However, weaknesses of TiO2 such as fast charge recombination and low visible light usage limit its industrial application. Furthermore, photocatalysts that are lost during the treatment of pollutants create the problem of secondary pollutants. Electrospun-based TiO2 fiber is a promising alternative to immobilize TiO2 and to improve its performance in photodegradation. Some strategies have been employed in fabricating the photocatalytic fibers by producing hollow fibers, porous fibers, composite TiO2 with magnetic materials, graphene oxide, as well as doping TiO2 with metal. The modification of TiO2 can improve the absorption of TiO2 to the visible light area, act as an electron acceptor, provide large surface area, and promote the phase transformation of TiO2. The improvement of TiO2 properties can enhance carrier transfer rate which reduces the recombination and promotes the generation of radicals that potentially degrade organic pollutants. The recyclability of fibers, calcination effect, photocatalytic reactors used, operation parameters involved in photodegradation as well as the commercialization potential of TiO2 fibers are also discussed in this review.

DEVELOPMENT OF A RAPID CONTINUOUS FLOW SALT LEACHING KIT FOR FABRICATION OF POLY(3-HYDROXYBUTYRIC ACID-CO-3-HYDROXYVALERATE) (PHBV) POROUS 3-D SCAFFOLD

2015 ◽  
Vol 75 (1) ◽  
Author(s):  
Syazwan Aizad ◽  
Badrul Hisham Yahaya ◽  
Saiful Irwan Zubairi
Keyword(s):  
Conventional Method ◽  
Continuous Flow ◽  
Tap Water ◽  
Chemical Properties ◽  
Porous Scaffolds ◽  
Time Saving ◽  
Salt Particle ◽  
Salt Leaching ◽  
Leaching Process ◽  
Highly Efficient

Polyhydroxyalkanoates (PHAs) that are synthesized from bacteria that are predominantly produced by microbial fermentation processes on organic waste, such as palm oil mill effluent (POME), olive oil and kitchen waste, contribute to a sustainable waste management. A great variety of materials from this family can be produced, however the application of PHAs in the production of scaffolds in tissue engineering has been mainly constrained to poly(hydroxybutyrate-co-valerate) (PHBV) due to its highly adjustable physico-chemical properties. One of the common methods in making the 3-D scaffolds is by performing solvent-casting particulate-leaching (SCPL) process, but this process requires a long period of soaking in water to extract the entire salt particle in the 3-D scaffolds. Therefore, the objective of this study is to develop a new method to the conventional method of salt leaching process via a highly efficient continuous flow leaching kit. The salt leaching process was carried out by (1) immersing the 3-D porous scaffolds in a fabricated static container containing tap water and (2) by allowing a pre-setting continuous flow rate of water. The concentration of sodium chloride (NaCl) was calculated periodically for both processes based on the salt standard calibration curve. The results showed that the exhaustive salt leaching of the conventional process occurred at 48 ± 5 hrs with the needs of changing the water twice a day. In contrast, the exhaustive salt leaching process via continuous flow leaching kit occurred at 40 ± 5 mins, 72 times faster than the conventional method (p<0.05). Therefore, the salt leaching process using continuous flow leaching kit can be considered a highly efficient and time saving procedure as compared to the conventional method.  

Conductive 3D sponges for affordable and highly-efficient water purification

Nanoscale ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 4771-4778 ◽  
Author(s):  
Yanbiao Liu ◽  
Fang Li ◽  
Qin Xia ◽  
Jiawei Wu ◽  
Jianshe Liu ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Water Purification ◽  
Low Cost ◽  
Highly Efficient ◽  
Electro Oxidation ◽  
Conductive Nanomaterials ◽  
Filtration Device

We developed a low-cost method to achieve efficient organic pollutants degradation by incorporating conductive nanomaterials to assist electro-oxidation, leading to an efficient conductive nano-sponge filtration device.

Highly Efficient Continuous Flow Reactions Using Singlet Oxygen as a “Green” Reagent

2011 ◽  
Vol 13 (19) ◽  
pp. 5008-5011 ◽  
Author(s):  
François Lévesque ◽  
Peter H. Seeberger
Keyword(s):  
Singlet Oxygen ◽  
Continuous Flow ◽  
Highly Efficient
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