scholarly journals Fe3O4 Based Nanoparticles as a Catalyst in Degradation of Dyes: A Short Review

10.48175/594 ◽  
2020 ◽  
pp. 34-42
Author(s):  
Sandip Kumar Panda ◽  
Lalit Prasad
Keyword(s):  
Waste Water ◽  
Toxic Effect ◽  
Aquatic Ecosystem ◽  
Catalytic Properties ◽  
Short Review ◽  
Chemical Substance ◽  
Present Review ◽  
Degradation Of Dyes ◽  
Biodegradation Process

Dye is a chemical substance which is used for coloring of a substance. For better coloration of substance it is made chemically stable and persistence to light, and biodegradation process. After applied to a substrate the waste generated in water causes very toxic effect and hazardous for aquatic ecosystem so it is necessary to degrade or decolorize dyes from waste water. In present review degradation of different dyes using Fe3O4 based nanoparticles were cited and their catalytic properties for degradation studied in this review.

Enzymes as a Reservoir of Host Defence Peptides

2020 ◽  
Vol 20 (14) ◽  
pp. 1310-1323
Author(s):  
Andrea Bosso ◽  
Antimo Di Maro ◽  
Valeria Cafaro ◽  
Alberto Di Donato ◽  
Eugenio Notomista ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Biological Activity ◽  
Internal Structure ◽  
Catalytic Properties ◽  
Cellular Responses ◽  
Host Defence ◽  
Present Review ◽  
Active Peptides ◽  
Wide Range

Host defence peptides (HDPs) are powerful modulators of cellular responses to various types of insults caused by pathogen agents. To date, a wide range of HDPs, from species of different kingdoms including bacteria, plant and animal with extreme diversity in structure and biological activity, have been described. Apart from a limited number of peptides ribosomally synthesized, a large number of promising and multifunctional HDPs have been identified within protein precursors, with properties not necessarily related to innate immunity, consolidating the fascinating hypothesis that proteins have a second or even multiple biological mission in the form of one or more bio-active peptides. Among these precursors, enzymes constitute certainly an interesting group, because most of them are mainly globular and characterized by a fine specific internal structure closely related to their catalytic properties and also because they are yet little considered as potential HDP releasing proteins. In this regard, the main aim of the present review is to describe a panel of HDPs, identified in all canonical classes of enzymes, and to provide a detailed description on hydrolases and their corresponding HDPs, as there seems to exist a striking link between these structurally sophisticated catalysts and their high content in cationic and amphipathic cryptic peptides.

scholarly journals Removal of Orange G Dye from Aqueous Solution by Adsorption: A Short Review

2020 ◽  
Vol 9 (1) ◽  
pp. 318-327
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Low Cost ◽  
Short Review ◽  
Industrial Wastes ◽  
Present Review ◽  
Wastewater Remediation ◽  
Experimental Conditions ◽  
Adsorption Capacities ◽  
Orange G

Adsorption is a widely used technique for wastewater remediation. The process is effective and economical for the removal of various pollutants from wastewater, including dyes. Moreover, Besides commercial activated carbon, different low-cost materials such as agricultural and industrial wastes are now used as adsorbents. The present review focused on the removal of a teratogenic and carcinogenic dye, orange G (OG) via adsorption using several adsorbents, together with the experimental conditions and their adsorption capacities. Based on the information compiled, various adsorbents have shown promising potential for OG removal.

scholarly journals Degradation of Plastics under Anaerobic Conditions: A Short Review

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 109 ◽  
Author(s):  
Xochitl Quecholac-Piña ◽  
María del Consuelo Hernández-Berriel ◽  
María del Consuelo Mañón-Salas ◽  
Rosa María Espinosa-Valdemar ◽  
Alethia Vázquez-Morillas
Keyword(s):  
Anaerobic Digestion ◽  
Short Review ◽  
Anaerobic Conditions ◽  
Experimental Conditions ◽  
Biodegradation Process ◽  
Thermophilic Conditions ◽  
Global Concern ◽  
Useful Life ◽  
Life Options ◽  
Temperature Water

Plastic waste is an issue of global concern because of the environmental impact of its accumulation in waste management systems and ecosystems. Biodegradability was proposed as a solution to overcome this problem; however, most biodegradable plastics were designed to degrade under aerobic conditions, ideally fulfilled in a composting plant. These new plastics could arrive to anaerobic environments, purposely or frequently, because of their mismanagement at the end of their useful life. This review analyzes the behavior of biodegradable and conventional plastics under anaerobic conditions, specifically in anaerobic digestion systems and landfills. A review was performed in order to identify: (a) the environmental conditions found in anaerobic digestion processes and landfills, as well as the mechanisms for degradation in those environments; (b) the experimental methods used for the assessment of biodegradation in anaerobic conditions; and (c) the extent of the biodegradation process for different plastics. Results show a remarkable variability of the biodegradation rate depending on the type of plastic and experimental conditions, with clearly better performance in anaerobic digestion systems, where temperature, water content, and inoculum are strictly controlled. The majority of the studied plastics showed that thermophilic conditions increase degradation. It should not be assumed that plastics designed to be degraded aerobically will biodegrade under anaerobic conditions, and an exact match must be done between the specific plastics and the end of life options that they will face.

scholarly journals A short review of contemporary developments in aquatic ecosystem modelling of lakes and reservoirs

2019 ◽  
Vol 117 ◽  
pp. 181-187 ◽  
Author(s):  
Marieke A. Frassl ◽  
Jonathan M. Abell ◽  
Daniel A. Botelho ◽  
Kathy Cinque ◽  
Badin R. Gibbes ◽  
...  
Keyword(s):  
Aquatic Ecosystem ◽  
Short Review ◽  
Ecosystem Modelling ◽  
Lakes And Reservoirs

WAYS OF IMPROVING THE TREATMENT OF DIFFICULT OXIDIZED WASTE WATER

2013 ◽  
Vol 3 (4) ◽  
pp. 37-42
Author(s):  
A. M FATTAKhOVA ◽  
A. G BALANDINA ◽  
R. I KhANGIL'DIN ◽  
V. A MARTYaShEVA
Keyword(s):  
Waste Water ◽  
Membrane Reactor ◽  
Process Intensification ◽  
Short Review

The authors give a short review on the existing of ways of treatment difficult oxidized waste water. The results of the study authors in the field of process intensification oxidation in membrane reactor in the presence of homogeneous and heterogeneous catalysers.

scholarly journals The global burden of lung cancer: A short review

1970 ◽  
Vol 1 (1) ◽  
Author(s):  
Thamaraiselvan Rengarajan
Keyword(s):  
Lung Cancer ◽  
Lung Adenocarcinoma ◽  
Environmental Influences ◽  
Short Review ◽  
Present Review ◽  
Global Burden ◽  
Men And Women ◽  
Lung Cancers

Lung cancer is the leading cause of cancer-related mortality in both men and women, and lung adenocarcinoma accounts for approximately 75-85% of all lung cancers. It is expected to cause 10 million deaths per year worldwide by the year 2030. A large number of lung cancers are associated with cigarette smoke, although other factors such as environmental influences and radon or nutrition may also be involved. Lung adenocarcinoma commonly develops resistance to radiation and chemotherapy, and often presents at stages too late for surgical intervention. The present review discuss about the epidemiology, etiology, pathogenesis, and chemoprevention of lung cancer.

scholarly journals CHEMICAL TOXICOLOGY : A BRIEF REVEIW

2020 ◽  
Author(s):  
JAYDIP DATTA
Keyword(s):  
Waste Water ◽  
Toxic Effect ◽  
Lead Pollution ◽  
Water Pollutants ◽  
Chemical Toxicology ◽  
Technical Report

In this Technical Report the main toxicity of Arsenic in water ie both in Drinking as well as Waste water as well as lead one of the major water pollutants .Continued Work :A SEMINAR ON ARSENIC AS A KEY WATER POLLUTANTS December 2006 DOI: 10.13140/RG.2.2.17913.31849 and Lead Pollution and its Toxic Effect : A Note July 2019 DOI: 10.13140/RG.2.2.10296.70407/4LicenseCC BY-SA 4.0 .

Rational construction of metal–organic frameworks for heterogeneous catalysis

2014 ◽  
Vol 1 (10) ◽  
pp. 721-734 ◽  
Author(s):  
Sha Ou ◽  
Chuan-De Wu
Keyword(s):  
Heterogeneous Catalysis ◽  
Catalytic Properties ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Short Review ◽  
Metal Organic ◽  
Rational Construction ◽  
Designed Synthesis ◽  
Organic Framework

The recently developed strategies on designed synthesis of porous metal–organic framework catalysts and their interesting catalytic properties are summarized in this short review.

Rhenium(V)-oxo complexes [ReOX2(N∩O)(EPh3)] (X=Cl, Br, I; E=P, As) – synthesis, structure, spectroscopy, and catalytic properties

2020 ◽  
Vol 40 (2) ◽  
pp. 27-47 ◽  
Author(s):  
Mariusz Wolff ◽  
Barbara Machura
Keyword(s):  
General Formula ◽  
Catalytic Properties ◽  
Structural Data ◽  
Present Review ◽  
Oxo Complexes ◽  
Comprehensive Survey

AbstractThe present review aims to give a comprehensive survey about the chemistry of rhenium(V)-oxo complexes of general formula [ReOX2(N∩O)(EPh3)], where X=Cl, Br, I, E=P, As, and N∩O stands for uninegative chelating N∩O-ligand, carried out within the last four decades. In addition to the synthesis aspects, the available structural data as well as the results issued from techniques such as infrared and ultraviolet-visible spectroscopies are collected and discussed. Furthermore, a brief description of the applications of these compounds in catalysis is included.

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