An integrated biological-electrocatalytic process for highly-efficient treatment of coking wastewater

2021 ◽  
pp. 125584
Author(s):  
Zhen-Yu Wu ◽  
Wei-Ping Zhu ◽  
Yang Liu ◽  
Lu-Lu Zhou ◽  
Peng-Xi Liu ◽  
...  
Keyword(s):  
Coking Wastewater ◽  
Efficient Treatment ◽  
Highly Efficient

scholarly journals Ultra-Highly Efficient Removal of Methylene Blue Based on Graphene Oxide/TiO2/Bentonite Sponge

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 824
Author(s):  
Yuan Liu ◽  
Luyan Wang ◽  
Ni Xue ◽  
Pengxiang Wang ◽  
Meishan Pei ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Graphene Oxide ◽  
Removal Rate ◽  
Cost Effective ◽  
Electron Hole ◽  
Efficient Treatment ◽  
Highly Efficient ◽  
Removal Capacity ◽  
Sensitivity Range

An ultra-highly efficient Graphene Oxide/TiO2/Bentonite (GO/TiO2/Bent) sponge was synthesized using an in situ hydrothermal method. GO/TiO2/Bent sponge with a GO mass concentration of 10% exhibited the highest treatment efficiency of methylene blue (MB), combining adsorption and photocatalytic degradation, and achieved a maximum removal efficiency of 100% within about 70 min. To further prove the ultra-high removal capacity of the sponge, the concentration of MB in water increased to ten times the original concentration. At so high a MB concentration, the removal rate was still as high as 80% in 90 min. The photocatalytic mechanism of GO/TiO2/Bent sponge was discussed through XPS, PL and radicals quenching experiments. Here Bent can immobilize TiO2 and react with a photo-generated hole to increase the amount of hydroxyl radical; effectively enhancing the degradation of MB.GO sponge enlarges the sensitivity range of TiO2 to visible light by increasing the charge separation of TiO2 and reducing the recombination of photo-generated electron–hole pairs. Additionally, GO sponge with an interconnected porous structure provides an effective platform to immobilize TiO2/bent and makes them be easily recovered. The as-prepared sponge develops a simple and cost-effective strategy to realize the ultra-highly efficient treatment of dyes in wastewater.

Highly efficient treatment of textile dyeing sludge by CO2 thermal plasma gasification

2019 ◽  
Vol 90 ◽  
pp. 29-36 ◽  
Author(s):  
Menglong Wang ◽  
Mengmei Mao ◽  
Ming Zhang ◽  
Guangdong Wen ◽  
Qiwei Yang ◽  
...  
Keyword(s):  
Thermal Plasma ◽  
Efficient Treatment ◽  
Plasma Gasification ◽  
Highly Efficient ◽  
Textile Dyeing
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