Degradation of textile dyes under subcritical water conditions in the presence of hydrogen peroxide

2013 ◽  
Vol 92 (4) ◽  
pp. 615-622 ◽  
Author(s):  
Somayeh Daneshvar ◽  
Nakamura Hidemi ◽  
Feridoun Salak ◽  
Nader Mahinpey
Keyword(s):  
Hydrogen Peroxide ◽  
Subcritical Water ◽  
Textile Dyes ◽  
Water Conditions

Degradation of Reactive Red 120 using hydrogen peroxide in subcritical water

Desalination ◽  
2011 ◽  
Vol 274 (1-3) ◽  
pp. 200-205 ◽  
Author(s):  
Vasileia M. Daskalaki ◽  
Eleni S. Timotheatou ◽  
Alexandros Katsaounis ◽  
Dimitrios Kalderis
Keyword(s):  
Hydrogen Peroxide ◽  
Subcritical Water ◽  
Reactive Red 120

Production of phenolic compounds from rice bran biomass under subcritical water conditions

2010 ◽  
Vol 160 (1) ◽  
pp. 259-266 ◽  
Author(s):  
Omid Pourali ◽  
Feridoun Salak Asghari ◽  
Hiroyuki Yoshida
Keyword(s):  
Phenolic Compounds ◽  
Rice Bran ◽  
Subcritical Water ◽  
Water Conditions

Hydrogen Peroxide Induced Efficient Mineralization of Poly(vinylidene fluoride) and Related Copolymers in Subcritical Water

2015 ◽  
Vol 54 (35) ◽  
pp. 8650-8658 ◽  
Author(s):  
Hisao Hori ◽  
Hirotaka Tanaka ◽  
Kengo Watanabe ◽  
Takahiro Tsuge ◽  
Takehiko Sakamoto ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Vinylidene Fluoride ◽  
Subcritical Water ◽  
Poly Vinylidene Fluoride

scholarly journals Life cycle assessment of biodiesel production from algal bio-crude oils extracted under subcritical water conditions

2014 ◽  
Vol 170 ◽  
pp. 454-461 ◽  
Author(s):  
Sundaravadivelnathan Ponnusamy ◽  
Harvind Kumar Reddy ◽  
Tapaswy Muppaneni ◽  
Cara Meghan Downes ◽  
Shuguang Deng
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Subcritical Water ◽  
Biodiesel Production ◽  
Crude Oils ◽  
Water Conditions

Hydrolysis kinetics of sunflower oil under subcritical water conditions

2009 ◽  
Vol 87 (6) ◽  
pp. 867-873 ◽  
Author(s):  
R. Alenezi ◽  
G.A. Leeke ◽  
R.C.D. Santos ◽  
A.R. Khan
Keyword(s):  
Sunflower Oil ◽  
Subcritical Water ◽  
Hydrolysis Kinetics ◽  
Water Conditions ◽  
Kinetics Of

scholarly journals The effect of different types of AOPs supported by hydrogen peroxide on the decolorization of methylene blue and viscose fibers dyeing wastewater

2021 ◽  
Author(s):  
Zeynep Bilici ◽  
Mohammed Saleh ◽  
Erdal Yabalak ◽  
Alireza Khataee ◽  
Nadir Dizge
Keyword(s):  
Hydrogen Peroxide ◽  
Removal Efficiency ◽  
Textile Industry ◽  
Subcritical Water ◽  
Color Removal ◽  
H2o2 Concentration ◽  
Dyeing Wastewater ◽  
Viscose Fibers ◽  
Different Types ◽  
Removal Efficiencies

Abstract Wastewater from the textile industry containing a high concentration of organic and inorganic chemicals have strong color and residual chemical oxygen demand (COD). Therefore, advanced oxidation processes (AOPs) are very good candidates to treat textile industry wastewater. In this study, we investigated the effect of different types of AOPs supported with hydrogen peroxide (H2O2) on the treatment of viscose fibers dyeing wastewater. Fenton, photo-Fenton, and Fenton supported subcritical water oxidation (FSWO) processes were chosen as AOPs to compare the treatment efficiency of viscose fibers dyeing wastewater. The effects of solution pH, Fe2+ concentration, and H2O2 concentration on the treatment of viscose fibers dyeing wastewater were tested. The maximum color and COD removal efficiency was obtained corresponding to pH 2.5 for all oxidation methods when MB dye solution was used. However, the maximum efficiencies were obtained at pH 3.0 for real textile wastewater decolorization. The MB dye removal efficiency was increased to 97.22, 100, and 100% for Fenton, photo-Fenton, and FSWO processes, respectively, when the addition of H2O2 concentration was adjusted to 125 mg/L. However, the maximum color removal efficiencies of viscose fibers dyeing wastewater were obtained 56.94, 61.26, 64.11% for Fenton, photo-Fenton, FSWO processes, respectively. As a result, the FSWO showed maximum color removal efficiencies.

Bio oil production from microalgae via hydrothermal liquefaction technology under subcritical water conditions

2018 ◽  
Vol 153 ◽  
pp. 108-117 ◽  
Author(s):  
P. Kiran Kumar ◽  
S. Vijaya Krishna ◽  
Kavita Verma ◽  
K. Pooja ◽  
D. Bhagawan ◽  
...  
Keyword(s):  
Subcritical Water ◽  
Oil Production ◽  
Hydrothermal Liquefaction ◽  
Bio Oil ◽  
Water Conditions
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