CuO Nanowhiskers-Based Photocatalysts for Wastewater Treatment

2017 ◽  
Vol 13 ◽  
pp. 183-189 ◽  
Author(s):  
Andrey Yu. Kozlov ◽  
Maksim V. Dorogov ◽  
Natalya V. Chirkunova ◽  
Ilya M. Sosnin ◽  
Anatolii A. Vikarchuk ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Wastewater Treatment ◽  
Copper Oxide ◽  
Organic Pollutant ◽  
Organic Pollution ◽  
Photocatalytic Properties ◽  
Research Results

This article described the photocatalysts for wastewater treatment based on copper oxide (II). Research results of CuO nanowhiskers photocatalytic properties are showedand a series of nanowhiskers tests on organic pollutant (methylene blue)are given. It is shown that the copper oxide nanowhiskers able to purify water from organic pollution.

scholarly journals Research application coal material is prepared from maccadamia peel and denatured by H2O2 to treat methylene blue

2020 ◽  
Vol 3 (2) ◽  
pp. 96-104
Author(s):  
Dao Minh Trung
Keyword(s):  
Methylene Blue ◽  
Wastewater Treatment ◽  
Activated Carbon ◽  
Treatment Time ◽  
Blue Color ◽  
Optimal Conditions ◽  
Research Application ◽  
Research Results ◽  
Color Treatment ◽  
H2o2 Oxidation

Macadamia shell contains a carbon content (47 - 49%), in addition, the shell contains 46.52% Oxidation, Hidro 6.10%, Nitrogen 0.36% and relatively low ash content of only 0.22%, this indicates the grain Macadamia has the potential to become activated carbon thanks to the above characteristics. This study was conducted to modify activated carbon by oxidizing agents to change the surface structure of activated carbon from hydrophobic to hydrophilic, non-polarizing to polarization, increasing the amount of adsorption simultaneously creating more durable links between dyes and activated carbon. Study of Methylene Blue wastewater treatment with coal from Maccadamia shell modified with H2O2 agent at H2O2 ratio : coal = 10:1. Research results show that Methylene Blue adsorption capacity reaches 1g /266,26mg Methylene Blue at optimal conditions corresponding to 25% concentration and 48 hours of soaking time. Analysis of infrared spectra showed that coal is modified by H2O2 agent with functional groups –OH, Carboxylic functional group C=O, group C-H in NH3, C–N group in Amine aliphatic or in Alcohol or Phenol and C–O bonding. Modified coal by H2O2 oxidation agent has Methylene Blue color treatment efficiency of 93.26%, corresponding to the original color of 474.67 Pt - Co at the respective optimal conditions pH = 8.5, dose of 1 g/L and treatment time of 60 minutes. Research results are similar to other research results and are applicable to color wastewater treatment.

RESEARCH AND EVALUATE TREATMENT EFFICIENCY ON TAPIOCA PROCESSING INDUSTRIAL WASTEWATER BY AEROBIC BIOFILTER TECHNOLOGY WITH VARIOUS MATERIALS

2010 ◽  
Vol 13 (3) ◽  
pp. 54-66
Author(s):  
Phuong Thi Thanh Nguyen ◽  
Phuoc Van Nguyen ◽  
Anh Cam Thieu
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Utilization Rate ◽  
Organic Loading ◽  
Treatment Efficiency ◽  
Research Results ◽  
Loading Rates

This study was performed to evaluate the efficiency of tapioca processing wastewater treatment using aerobic biofilter with variety of biofilter media: coir, coal, PVC plastic and Bio - Ball BB15 plastic. Research results in the lab demonstrated all four aerobic biofilter models processed can treated completely N and COD which COD reached 90-98% and N reached 61-92%, respectively, at the organic loading rates in range of 0.5, 1, 1.5 and 2 kgCOD/m3.day. The results identified coir filter was the best in four researched materials with removal COD and specific substract utilization rate can reach 98%, and 0.6 kg COD/kgVSS.day. Research results open the new prospects for the application of the cheap materials, available for wastewater treatment.

A 3D 2-fold interpenetrating Cu(II) coordination polymer based on 4,4′-oxybis(benzoic acid) and 1,3-bis(2-methyl-imidazol-1-yl) benzene exhibiting photocatalytic properties

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Shan-Bao Qiao
Keyword(s):  
Methylene Blue ◽  
Coordination Polymer ◽  
Benzoic Acid ◽  
Rhodamine B ◽  
Photocatalytic Properties

Abstract A new Cu(II) complex, [Cu2(1,3-BMIB)(OBA)2] n (1) (1,3-BMIB = 1,3-bis(2-methyl-1H-imidazol-1-yl)benzene, H2OBA = 4,4′-oxybis(benzoic acid)) was hydrothermally synthesized and has been structurally characterized. Complex 1 possesses a 3D 2-fold interpenetrating framework based on [Cu(OBA)] n layers with a Schläfli symbol {412.63}. Complex 1 displays excellent photocatalytic properties in the degradation of methylene blue (MB) and rhodamine B (RhB).

scholarly journals Synchronous oil/water separation and wastewater treatment on a copper-oxide-coated mesh

RSC Advances ◽  
2021 ◽  
Vol 11 (29) ◽  
pp. 17740-17745
Author(s):  
Yahua Liu ◽  
Peng Xu ◽  
Wenna Ge ◽  
Chenguang Lu ◽  
Yunlai Li ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Copper Oxide ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

An integrated multifunctional copper-oxide-coated mesh was designed via facile immersing and burning methods, which manifests synchronous oil/water separation and wastewater treatment.

Crystal and electronic structures, and photoluminescence and photocatalytic properties of α-EuZrS3

2016 ◽  
Vol 40 (12) ◽  
pp. 10219-10226 ◽  
Author(s):  
Sheng-Ping Guo ◽  
Yang Chi ◽  
Jian-Ping Zou ◽  
Huai-Guo Xue
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Electronic Structures ◽  
Photocatalytic Properties ◽  
Simulated Sunlight ◽  
Sunlight Irradiation

Novel crystalline α-EuZrS3 shows Eu2+ photoluminescence and is photocatalytically active towards the decomposition of methylene blue under visible light or simulated sunlight irradiation.

Degradation of organic pollutant in restaurant wastewater using the homogenous catalysis with Mn(II) and EDTA

2021 ◽  
Vol 10 (4) ◽  
pp. 46-51
Author(s):  
Tue Nguyen-Ngoc ◽  
Trung Nguyen-Duc
Keyword(s):  
Textile Industry ◽  
Industrial Wastewater ◽  
Plant Protection ◽  
Organic Pollutant ◽  
Paper Industry ◽  
Organic Pollution ◽  
Activation Process ◽  
Printing Industry ◽  
Transitional Metal ◽  
Restaurant Wastewater

It can be seen that the objects of wastewater that need to be treated are quite diverse in types and complex in terms of reaction mechanisms. The methods mainly focus on the treatment of toxic organic compounds, especially phenols or plant protection agents in industrial wastewater, paper industry, food production, textile industry, printing industry... The activation of H2O2 and O2 by complexes of transitional metal ions and suitable ligands creates oxidizing agents and ecologically healthy products. The intermediate substances arising in the activation process such as free radicals OH., O2., HO2., ... can oxidize many compounds, especially the ability to attack the aroma of organic pollutants. In this paper, the results of research on treating organic pollution in restaurant wastewater with H2O2 are presented as a catalyst of complexes between Mn2+ ions and EDTA. The conditions including pH, EDTA/Mn2+, the concentration of H2O2, Mn2+ were investigated to obtain the optimum conditions for improving COD treatment efficiency. This work proposes a method based on formation of the Mn(II)-EDTA complex,  b=1; with the optimal conditions of other factors as following [H2O2]0 = 0,75.10-3 mol/L; [Mn(EDTA)]2- = 33,33 mol/L, pH=10.5; t = 15 minutes. The initial COD of 1025 mg/L decreased to 135 mg/L after the proposed procedure.  The results provide solutions of homogeneous complex catalysts for domestic/restaurant and industrial wastewater treatment at room temperature and atmosphere.

Simultaneous doping of sulfur and chloride ions into ZnO nanorods for improved photocatalytic properties towards degradation of methylene blue

2021 ◽  
Author(s):  
Zaheer Ahmed Ujjan ◽  
Muhammad Ali Bhatti ◽  
Aqeel Ahmed Shah ◽  
Aneela Tahira ◽  
Nek Muhammad Shaikh ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Zno Nanorods ◽  
Chloride Ions ◽  
Photocatalytic Properties ◽  
Simultaneous Doping

Study on Wastewater Contaminant Removal Efficiency by Carbon Fiber Ecological Grass

2013 ◽  
Vol 838-841 ◽  
pp. 2300-2305 ◽  
Author(s):  
Hao Guo ◽  
Wei Fang Ma ◽  
Jian Dong Ye ◽  
Chang Jiang Kou
Keyword(s):  
Wastewater Treatment ◽  
Carbon Fiber ◽  
Removal Efficiency ◽  
Good Choice ◽  
Contaminant Removal ◽  
Research Results ◽  
Stirring Rate ◽  
N Removal

The aim of this study is to investigate the contaminant removal efficiency in wastewater when disposed by carbon fiber ecological grass. The paper analyzed the TN, TP, CODMn, NH4+-N and SS removal efficiency when used different dosage of carbon fiber ecological grass. The research results indicated that the contaminant removal efficiency at pH=8 is higher than pH=6, 7 and 9. When DO between 5.6 and 8, the TN, TP and NH4+-N removal efficiency has a highest level, the removal efficiency is 83.91%, 68.16% and 83.3% respectively. When DO between 8.1 and 10.7, the CODMn removal efficiency has a highest level, the removal efficiency is 57.93%. The stirring rate is important to the contaminant adsorption and removal. Consequently, selecting carbon fiber ecological grass in wastewater treatment is a good choice.

Controlling the morphology and composition of Ag/AgBr hybrid nanostructures and enhancing their visible light induced photocatalytic properties

RSC Advances ◽  
2016 ◽  
Vol 6 (60) ◽  
pp. 54709-54717 ◽  
Author(s):  
Aasim Shahzad ◽  
Taekyung Yu ◽  
Woo-Sik Kim
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Hybrid Nanostructures ◽  
Photocatalytic Properties

Ag/AgBr hybrid nanostructures were prepared by reducing AgBr nanoparticles synthesized by reaction of Ag+ with Br−. The Ag/AgBr hybrid nanostructures exhibited enhanced photocatalytic activity and recyclability for decomposing methylene blue (MB).

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