Catalytic dechlorination of2,4-dichlorophenol by Ni/Fe nanoparticles in the presence of humic acid: intermediate products and some experimental parameters

2012 ◽  
Vol 9 (6) ◽  
pp. 603-615 ◽  
Author(s):  
Zhen Zhang ◽  
Xiaoshu Lv ◽  
Shams Ali Baig ◽  
Xinhua Xu
Keyword(s):  
Humic Acid ◽  
Intermediate Products ◽  
Experimental Parameters ◽  
Fe Nanoparticles ◽  
Catalytic Dechlorination

The humic acid influenced the behavior and reactivity of Ni/Fe nanoparticles in the removal of deca-brominated diphenyl ether from aqueous solution

2019 ◽  
Vol 26 (10) ◽  
pp. 10136-10147 ◽  
Author(s):  
Yunqiang Yi ◽  
Juan Wu ◽  
Guoquan Tu ◽  
Dongye Zhao ◽  
Zhanqiang Fang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Humic Acid ◽  
Diphenyl Ether ◽  
Fe Nanoparticles

Modification of Pd–Fe nanoparticles for catalytic dechlorination of 2,4-dichlorophenol

2013 ◽  
Vol 449 ◽  
pp. 157-167 ◽  
Author(s):  
Xiangyu Wang ◽  
Minping Zhu ◽  
Huiling Liu ◽  
Jun Ma ◽  
Fang Li
Keyword(s):  
Fe Nanoparticles ◽  
Catalytic Dechlorination

scholarly journals Catalytic dechlorination of 2,4-dichlorophenol by Ni/Fe nanoparticles prepared in the presence of ultrasonic irradiation

2014 ◽  
Vol 21 (5) ◽  
pp. 1714-1721 ◽  
Author(s):  
Deming Zhao ◽  
Yiya Zheng ◽  
Min Li ◽  
Shams Ali Baig ◽  
Donglei Wu ◽  
...  
Keyword(s):  
Ultrasonic Irradiation ◽  
Fe Nanoparticles ◽  
Catalytic Dechlorination

scholarly journals Experimental modeling and optimization for the reduction of hexavalent chromium in aqueous solutions using ascorbic acid

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Qammer Zaib ◽  
Hung Suck Park ◽  
Daeseung Kyung
Keyword(s):  
Ascorbic Acid ◽  
Humic Acid ◽  
Aqueous Solutions ◽  
Tap Water ◽  
Hard Water ◽  
Contaminated Water ◽  
Optimal Dosage ◽  
Statistical Experimental Design ◽  
Experimental Parameters ◽  
Acid Dosage

AbstractIn this study, we investigated the reduction of toxic Cr(VI) to less toxic Cr(III) using ascorbic acid in various aqueous solutions: deionized water, synthetic soft water, synthetic hard water, and real tap water. The experiments were performed using a statistical experimental design. Response surface methodology (RSM) was used to correlate Cr(VI) reduction (response variable) with experimental parameters such as initial Cr(VI) concentration, humic acid concentration, and ascorbic acid dosage. The empirical model obtained from the experiments was used to estimate and optimize the quantity of ascorbic acid required for the reduction of ≥ 99% Cr(VI) in water. The optimized dosages of ascorbic acid were predicted and experimentally validated for > 99.5% reduction of Cr(VI) (1, 10, 20, and 100 mg/L) in the solutions. Even a solution containing an initial Cr(VI) concentration of 100 mg/L was reduced in concentration ≥ 99.9% with optimal dosage of ascorbic acid (500 mg/L) in the presence of 20 mg/L humic acid. Moreover, the reaction kinetics (kobs-Cr(VI) = 0.71 mM−1 s−1) were sufficient to reduce the ≥ 99.9% Cr(VI) in 20 min. This study sheds new light on the effect of ascorbic acid on Cr(VI) reduction, and provides knowledge fundamental to optimize treatment of Cr(VI) contaminated water to environmentally acceptable endpoints.

Catalytic dechlorination of monochlorobenzene by Pd/Fe nanoparticles immobilized within a polymeric anion exchanger

2011 ◽  
Vol 178 ◽  
pp. 161-167 ◽  
Author(s):  
Lei Yang ◽  
Lu Lv ◽  
Shujuan Zhang ◽  
Bingcai Pan ◽  
Weiming Zhang
Keyword(s):  
Anion Exchanger ◽  
Fe Nanoparticles ◽  
Catalytic Dechlorination ◽  
Polymeric Anion

Catalytic dechlorination of 2,4-dichlorophenol by Pd/Fe bimetallic nanoparticles in the presence of humic acid

2010 ◽  
Vol 182 (1-3) ◽  
pp. 252-258 ◽  
Author(s):  
Zhen Zhang ◽  
Qiaohui Shen ◽  
Naman Cissoko ◽  
Jingjing Wo ◽  
Xinhua Xu
Keyword(s):  
Humic Acid ◽  
Bimetallic Nanoparticles ◽  
Catalytic Dechlorination
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