Simultaneous removal of benzene, toluene, ethylbenzene and xylene (BTEX) by CaO2 based Fenton system: Enhanced degradation by chelating agents

2018 ◽  
Vol 331 ◽  
pp. 255-264 ◽  
Author(s):  
Yunfei Xue ◽  
Shuguang Lu ◽  
Xiaori Fu ◽  
Virender K. Sharma ◽  
Itza Mendoza-Sanchez ◽  
...  
Keyword(s):  
Chelating Agents ◽  
Simultaneous Removal ◽  
Benzene Toluene ◽  
Fenton System ◽  
Enhanced Degradation

scholarly journals Directed Evolution of Biphenyl Dioxygenase: Emergence of Enhanced Degradation Capacity for Benzene, Toluene, and Alkylbenzenes

2001 ◽  
Vol 183 (18) ◽  
pp. 5441-5444 ◽  
Author(s):  
Hikaru Suenaga ◽  
Mariko Mitsuoka ◽  
Yuko Ura ◽  
Takahito Watanabe ◽  
Kensuke Furukawa
Keyword(s):  
Amino Acids ◽  
Aromatic Hydrocarbons ◽  
Burkholderia Cepacia ◽  
Large Subunit ◽  
Site Directed Mutagenesis ◽  
Biphenyl Dioxygenase ◽  
Pseudomonas Pseudoalcaligenes ◽  
Benzene Toluene ◽  
Related Compounds ◽  
Enhanced Degradation

ABSTRACT Biphenyl dioxygenase (Bph Dox) catalyzes the initial oxygenation of biphenyl and related compounds. Bph Dox is a multicomponent enzyme in which a large subunit (encoded by the bphA1 gene) is significantly responsible for substrate specificity. By using the process of DNA shuffling of bphA1 of Pseudomonas pseudoalcaligenes KF707 and Burkholderia cepaciaLB400, a number of evolved Bph Dox enzymes were created. Among them, anEscherichia coli clone expressing chimeric Bph Dox exhibited extremely enhanced benzene-, toluene-, and alkylbenzene-degrading abilities. In this evolved BphA1, four amino acids (H255Q, V258I, G268A, and F277Y) were changed from the KF707 enzyme to those of the LB400 enzyme. Subsequent site-directed mutagenesis allowed us to determine the amino acids responsible for the degradation of monocyclic aromatic hydrocarbons.

Enhanced degradation of BDE209 in spiked soil by ferrous-activated persulfate process with chelating agents

2016 ◽  
Vol 24 (3) ◽  
pp. 2442-2448
Author(s):  
Hongjiang Peng ◽  
Liya Xu ◽  
Wei Zhang ◽  
Lin Liu ◽  
Fuwen Liu ◽  
...  
Keyword(s):  
Chelating Agents ◽  
Spiked Soil ◽  
Activated Persulfate ◽  
Enhanced Degradation

Oxalate enhanced degradation of Orange II in heterogeneous UV-Fenton system catalyzed by Fe3O4@γ-Fe2O3 composite

Chemosphere ◽  
2018 ◽  
Vol 199 ◽  
pp. 147-153 ◽  
Author(s):  
Huiwang Dai ◽  
Shuying Xu ◽  
Jianxin Chen ◽  
Xiaozeng Miao ◽  
Jianxi Zhu
Keyword(s):  
Orange Ii ◽  
Fenton System ◽  
Enhanced Degradation

New biodegradable organic-soluble chelating agents for simultaneous removal of heavy metals and organic pollutants from contaminated media

2013 ◽  
Vol 260 ◽  
pp. 676-688 ◽  
Author(s):  
Amos Ullmann ◽  
Neima Brauner ◽  
Shlomi Vazana ◽  
Zhanna Katz ◽  
Roman Goikhman ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Pollutants ◽  
Chelating Agents ◽  
Simultaneous Removal ◽  
Removal Of Heavy Metals

Dramatically enhanced degradation of recalcitrant organic contaminants in MgO2/Fe(III) Fenton-like system by organic chelating agents

2021 ◽  
Vol 192 ◽  
pp. 110242
Author(s):  
Yun Bai ◽  
Doudou Wu ◽  
Wei Wang ◽  
Pei Chen ◽  
Fatang Tan ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
Chelating Agents ◽  
Enhanced Degradation

SIMULTANEOUS REMOVAL OF ASTRAZONE BLUE AND LEAD ONTO LOW COST ADSORBENTS BASED ON POWER PLANT ASH

2011 ◽  
Vol 10 (3) ◽  
pp. 341-347 ◽  
Author(s):  
Maria Harja ◽  
Marinela Barbuta ◽  
Lacramioara Rusu ◽  
Corneliu Munteanu ◽  
Gabriela Buema ◽  
...  
Keyword(s):  
Power Plant ◽  
Low Cost ◽  
Simultaneous Removal ◽  
Power Plant Ash ◽  
Plant Ash
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