scholarly journals Oil/Water Interfacial Destabilization of Floated Oily Sludge Based on the Catalytic Decomposition of H2O2 Induced by Interfacial-Active Complexes

2020 ◽  
Author(s):  
Feng Li ◽  
Yingxin Gao ◽  
Min Yang
Keyword(s):  
Catalytic Decomposition ◽  
Oily Sludge ◽  
Oil Water ◽  
Decomposition Of H2o2

Application of S2O82-/FexOy Solid Super Acid as a Heterogeneous Fenton-Like Catalyst for the Degradation of Orange IV in Water

2010 ◽  
Vol 150-151 ◽  
pp. 1710-1713
Author(s):  
Ying Jie Zhang ◽  
Yue Xiao Tian ◽  
Da Peng Li ◽  
Guo Rui Liu ◽  
Li Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Iron Oxides ◽  
Catalytic Decomposition ◽  
Optimal Conditions ◽  
Heterogeneous Fenton ◽  
Effective Catalyst ◽  
Preparation Conditions ◽  
Super Acid ◽  
Decomposition Of H2o2

A new Fenton-like catalyst was prepared to degrade Orange IV in water by catalytic decomposition of H2O2. The optimal preparation conditions were discussed. The catalytic activity of catalyst was evaluated by the degradation of Orange IV and the decomposition of H2O2. The results show that solid super acid (S2O82-/FexOy) soaked in (NH4)2S2O8 is the most effective catalyst among the synthesized iron oxides soaked in other oxidants. The optimal conditions for solid super acid preparation are calcined at 500 for 2 h in the air.

Bio-inspired self-propelled diatom micromotor by catalytic decomposition of H2O2 under low fuel concentration

Nanoscale ◽  
2018 ◽  
Vol 10 (34) ◽  
pp. 16268-16277 ◽  
Author(s):  
Atanu Panda ◽  
Ankireddy Seshadri Reddy ◽  
Sada Venkateswarlu ◽  
Minyoung Yoon
Keyword(s):  
Motion Control ◽  
Catalytic Decomposition ◽  
Fuel Concentration ◽  
Decomposition Of H2o2

An active bubble-propelled diatom micromotor under low fuel concentration and its motion control was demonstrated.

Simultaneous removal of NO and SO2 from coal-fired flue gas based on the catalytic decomposition of H2O2 over Fe2(MoO4)3

2019 ◽  
Vol 371 ◽  
pp. 486-499 ◽  
Author(s):  
Xuan Liu ◽  
Chang'an Wang ◽  
Tao Zhu ◽  
Qiang Lv ◽  
Yang Li ◽  
...  
Keyword(s):  
Flue Gas ◽  
Catalytic Decomposition ◽  
Simultaneous Removal ◽  
Decomposition Of H2o2

Biosurfactants as demulsifying agents for oil recovery from oily sludge – performance evaluation

2013 ◽  
Vol 67 (12) ◽  
pp. 2875-2881 ◽  
Author(s):  
Evans M. N. Chirwa ◽  
Tshepo Mampholo ◽  
Oluwademilade Fayemiwo
Keyword(s):  
Oil Recovery ◽  
Sodium Dodecyl ◽  
Cost Effective ◽  
Solid Particles ◽  
Second Step ◽  
Oily Sludge ◽  
Waste Sludge ◽  
Complex Interactions ◽  
Oil Water ◽  
Living Organisms

The oil producing and petroleum refining industries dispose of a significant amount of oily sludge annually. The sludge typically contains a mixture of oil, water and solid particles in the form of complex slurry. The oil in the waste sludge is inextractible due to the complex composition and complex interactions in the sludge matrix. The sludge is disposed of on land or into surface water bodies thereby creating toxic conditions or depleting oxygen required by aquatic animals. In this study, a fumed silica mixture with hydrocarbons was used to facilitate stable emulsion (‘Pickering’ emulsion) of the oily sludge. The second step of controlled demulsification and separation of oil and sludge into layers was achieved using either a commercial surfactant (sodium dodecyl sulphate (SDS)) or a cost-effective biosurfactant from living organisms. The demulsification and separation of the oil layer using the commercial surfactant SDS was achieved within 4 hours after stopping mixing, which was much faster than the 10 days required to destabilise the emulsion using crude biosurfactants produced by a consortium of petrochemical tolerant bacteria. The recovery rate with bacteria could be improved by using a more purified biosurfactant without the cells.

Catalytic decomposition of H2O2 in hydrophilic solvents: The kinetic aspect

2007 ◽  
Vol 80 (11) ◽  
pp. 1822-1825
Author(s):  
A. P. Pokutsa ◽  
A. B. Zaborovskii ◽  
D. S. Maksim
Keyword(s):  
Catalytic Decomposition ◽  
Kinetic Aspect ◽  
Decomposition Of H2o2

Quantitative accounting for the medium effect at the catalytic decomposition of H2O2 in hydrophilic solvents

2009 ◽  
Vol 79 (7) ◽  
pp. 1425-1429 ◽  
Author(s):  
A. P. Pokutsa ◽  
R. G. Makitra ◽  
D. S. Maksim ◽  
E. Ya. Pal’chikova
Keyword(s):  
Catalytic Decomposition ◽  
Medium Effect ◽  
Decomposition Of H2o2

scholarly journals Finding Chemical Pathways Toward the Valorization of Automobile-Service-Station Wastes

2018 ◽  
Vol 3 (1) ◽  
pp. 636
Author(s):  
Janina Chauca ◽  
María Rosales ◽  
Diego Muñoz ◽  
Carlos Banchón
Keyword(s):  
Heavy Metals ◽  
Chemical Process ◽  
Environmental Concern ◽  
Polyaromatic Hydrocarbons ◽  
Oily Sludge ◽  
Contaminated Water ◽  
Service Station ◽  
Chemical Treatments ◽  
Oil Water ◽  
Oil Wastewater

Automobile-service-station wastes make for an acute environmental concern because they contain polyaromatic hydrocarbons, heavy metals, surfactants, and other harmful elements. An eco-friendly way to treat and take advantage of these wastes is embodied in the concept called "valorization". In the present work, valorization is described as a chemical process to remove solids from contaminated water and to stabilize oily sludge into a saponified product. Electrocoagulation and coagulation with aluminum were applied to separate oil-water emulsions and removed 99.7% of turbidity. Both coagulation processes obtained approximately 0.85 kg of treated water and 0.027 kg of dried oily sludge per kg of wastewater. A saponification process with dosages of 10% NaOH stabilized the dried oily sludge. In hopes of finding pathways to valorize wastes, chemical treatments with aluminum and NaOH obtained a product that can be used as a surfactant or as an energy source.Keywords: sludge, electrocoagulation, saponification, oil, wastewater 

scholarly journals Catalytic Decomposition of H2O2 over Manganese Oxides Supported on an Active Alumina

2001 ◽  
Vol 19 (7) ◽  
pp. 541-551 ◽  
Author(s):  
Nasr-Allah M. Deraz ◽  
M.A. El-Sayed ◽  
A. Abd. El-Aal
Keyword(s):  
Manganese Oxides ◽  
Catalytic Decomposition ◽  
Active Alumina ◽  
Decomposition Of H2o2

CATALYTIC DECOMPOSITION OF H2O2 USING FeCrAl METALLIC FOAM−BASED CATALYSTS

2011 ◽  
Vol 10 (4) ◽  
pp. 337-349 ◽  
Author(s):  
Rachid Amrousse ◽  
C. Augustin ◽  
K. Farhat ◽  
Yann Batonneau ◽  
Charles J. Kappenstein
Keyword(s):  
Catalytic Decomposition ◽  
Metallic Foam ◽  
Decomposition Of H2o2
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