Transition Metal-Substituted Magnetite as an Innovative Adsorbent and Heterogeneous Catalyst for Wastewater Treatment

2017 ◽  
pp. 225-247 ◽  
Author(s):  
Shima Rahim Pouran ◽  
Mohammad Saleh Shafeeyan ◽  
Abdul Aziz Abdul Raman ◽  
Wan Mohd Ashri Wan Daud ◽  
Abolfazl Bayrami
Keyword(s):  
Wastewater Treatment ◽  
Transition Metal ◽  
Heterogeneous Catalyst

Layered Transition Metal Carboxylates: Efficient Reusable Heterogeneous Catalyst for Epoxidation of Olefins

Langmuir ◽  
2009 ◽  
Vol 25 (23) ◽  
pp. 13667-13672 ◽  
Author(s):  
Rupam Sen ◽  
Susmita Bhunia ◽  
Dasarath Mal ◽  
Subratanath Koner ◽  
Yoshitaro Miyashita ◽  
...  
Keyword(s):  
Transition Metal ◽  
Heterogeneous Catalyst ◽  
Metal Carboxylates ◽  
Layered Transition Metal ◽  
Epoxidation Of Olefins

scholarly journals Facile preparation of copper impregnated aluminum pillared montmorillonite: nanoclays for wastewater treatment

2016 ◽  
Vol 64 (3) ◽  
pp. 553-560 ◽  
Author(s):  
P. Tepmatee ◽  
P. Siriphannon
Keyword(s):  
Escherichia Coli ◽  
Wastewater Treatment ◽  
Heterogeneous Catalyst ◽  
Treatment Time ◽  
Nitrogen Adsorption ◽  
Reactive Orange 16 ◽  
Pillared Montmorillonites ◽  
Facile Preparation ◽  
Reactive Orange ◽  
Nitrogen Adsorption Isotherms

Abstract Copper impregnated aluminum pillared montmorillonites (Cu-iAlpill-MMTs) were prepared by adding Cu2+ solution into dried aluminum polyohydroxy cation intercalated montmorillonite using various Cu2+ concentrations, i.e. 4, 7, 10 and 13 wt% and then calcining at 500°C. The Cu-iAlpill-MMTs possessed slit-liked mesopores with pore diameters of 3.3–3.8 nm and ~6–35 nm as observed from the nitrogen adsorption isotherms. The mesopore quantities of Cu-iAlpill-MMTs gradually decreased with the increase of impregnated Cu2+ concentrations. The impregnated CuO occupied not only the interior interlayers, but also the exterior surfaces of Cu-iAlpill-MMTs. The Cu-iAlpill-MMTs with 10 and 13 wt% of impregnated Cu2+ could inhibit the growth of Escherichia coli. The Cu-iAlpill-MMTs effectively acted as the heterogeneous catalyst for removal reactive orange 16 (RO16) in Fenton or photo-Fenton oxidation treatments. The higher impregnated Cu2+ and/or the longer treatment time brought about the higher percentage of RO16 removal.

Transition Metal-Catalyzed Dissociation of Phosphine−Gallane Adducts:  Isolation of Mechanistic Model Complexes and Heterogeneous Catalyst Poisoning Studies

2007 ◽  
Vol 46 (18) ◽  
pp. 7394-7402 ◽  
Author(s):  
Timothy J. Clark ◽  
Cory A. Jaska ◽  
Ayse Turak ◽  
Alan J. Lough ◽  
Zheng-Hong Lu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Heterogeneous Catalyst ◽  
Mechanistic Model ◽  
Catalyst Poisoning ◽  
Model Complexes ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed

Synthesis and Characterization of Different Transition Metal-Alginate Based Heterogeneous Catalyst for Esterification Reaction

2016 ◽  
Vol 709 ◽  
pp. 57-60
Author(s):  
Fei Ling Pua ◽  
Kah Thong Looi ◽  
Shamala Gowri Krishnan ◽  
Sharifah Nabihah
Keyword(s):  
Fatty Acids ◽  
Oleic Acid ◽  
Transition Metal ◽  
Free Fatty Acids ◽  
Heterogeneous Catalyst ◽  
Heterogeneous Catalysts ◽  
Biodiesel Production ◽  
Esterification Reaction ◽  
Homogeneous Catalyst

In recent years, attention has been drawn to produce heterogeneous catalyst to replace homogeneous catalyst in biodiesel industry. This study was focused on the synthesis of three different types of alginate based heterogeneous catalyst (Ferric-alginate, Copper-alginate, and Nickel alginate) and the effect of the catalyst on esterification of oleic acid. Morphology and elemental analysis was conducted to investigate the properties of the catalyst. The new heterogeneous catalysts were used to catalyze the esterification of oleic acid at reaction temperature of 60°C and 2 hours reaction time. Fe-alginate has achieved the highest free fatty acids (FFAs) conversation rate of 82.03%. The results and findings proved that transition metal-alginate heterogeneous catalyst has the potential and ability to esterify the free fatty acids prior biodiesel production from high free fatty acids feedstock.

scholarly journals Fe-Nanoporous Carbon Derived from MIL-53(Fe): A Heterogeneous Catalyst for Mineralization of Organic Pollutants

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 641 ◽  
Author(s):  
Le ◽  
Cowan ◽  
Drobek ◽  
Bechelany ◽  
Julbe ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Nitric Acid ◽  
Organic Carbon ◽  
Heterogeneous Catalyst ◽  
Organic Pollutants ◽  
Nanoporous Carbon ◽  
Carbon Felt ◽  
Acid Orange 7 ◽  
Toc Removal ◽  
Felt Electrodes

Catalytic electrodes were prepared via carbonization of MIL-53(Fe) on the surface of porous carbon felt electrodes (CF) for use in wastewater treatment by the heterogeneous electro-Fenton (EF) process. The best results were obtained when the carbon felt was pretreated with nitric acid, enhancing the affinity of the MIL-53(Fe) for the surface. Following a series of optimization experiments, carbonization conditions of 800 °C for 5 h were used to form Fe-nanoporous carbon (MOFs@CF). The as-prepared electrodes were used as both cathode and heterogeneous catalyst in the EF process for the mineralization of exemplar dye Acid Orange 7 (AO7). Total organic carbon (TOC) removal of 46.1% was obtained within 8 h of electrolysis at around neutral pH (6.5) and the electrode retained over 80% of its original efficiency over five treatment cycles.

scholarly journals Transition Metal Dichalcogenides for the Application of Pollution Reduction: A Review

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1012 ◽  
Author(s):  
Xixia Zhang ◽  
Sin Yong Teng ◽  
Adrian Chun Minh Loy ◽  
Bing Shen How ◽  
Wei Dong Leong ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Wastewater Treatment ◽  
Transition Metal ◽  
Gas Adsorption ◽  
Gas Sensing ◽  
Transition Metal Dichalcogenides ◽  
Pollution Reduction ◽  
Transition Metal Dichalcogenide ◽  
Sensing Technology ◽  
Metal Dichalcogenides

The material characteristics and properties of transition metal dichalcogenide (TMDCs) have gained research interest in various fields, such as electronics, catalytic, and energy storage. In particular, many researchers have been focusing on the applications of TMDCs in dealing with environmental pollution. TMDCs provide a unique opportunity to develop higher-value applications related to environmental matters. This work highlights the applications of TMDCs contributing to pollution reduction in (i) gas sensing technology, (ii) gas adsorption and removal, (iii) wastewater treatment, (iv) fuel cleaning, and (v) carbon dioxide valorization and conversion. Overall, the applications of TMDCs have successfully demonstrated the advantages of contributing to environmental conversation due to their special properties. The challenges and bottlenecks of implementing TMDCs in the actual industry are also highlighted. More efforts need to be devoted to overcoming the hurdles to maximize the potential of TMDCs implementation in the industry.

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