Debabrata Pal, IJGHC, September 2017 – November 2017; Sec. A; Vol.6, No.4, 291-298.,DOI: 10.24214/IJGHC/GC/6/4/29198
The extreme progress of the human civilization in the recent past has been tracked with the rapid development of new chemical technologies and the vast number of new chemical products in the last decades, but as far as sustainability is concerned, it caused a serious negative impact on the environment that turned the attention of the environmentalists to think of remedial actions for the negative impacts (monitoring environmental pollution, reduction of pollutants, recycling, etc). Essentially, the most effective way to reduce the negative impacts is to design and innovation in the manufacturing processes, taking into account energy, materials, atom economy, and finally the life cycle of the products and their practical recycling into new materials. Green chemistry is the utilization of a set of principles that will help reduce the use and generation of hazardous substances during the manufacture and application of chemical products. Green chemistry aims to protect the environment not by cleaning up, but by inventing new chemical processes that do not pollute. It is a rapidly developing and an important area in the chemical sciences and also going to play the major role in the sustainability of the mankind in the future.
Francois Eya’ane Meva, Jean Claude Ndom, Andre Wanlao Yonga, Agnes Antoinette Ntoumba, Phillipe Belle Ebanda Kedi, Rudy-Evrard Njike Loudang, Marcelle Loretta Segnou, Roland Emmanuel Mang, Joel Olivier Avom Mben, Emmanuel Albert Mpondo Mpondo, Luc Meva’a Mbaze,IJGHC, September 2017 – November 2017; Sec. A; Vol.6, No.4, 280-290.,DOI: 10.24214/IJGHC/GC/6/4/28090.
Development of green nanotechnology is making the interest of researchers towards biosynthesis of nanoparticles. In this work, copper oxides nanoparticles were synthesized from the aqueous leaf extract of Musanga cecropioides. The formation of the nanoparticles was proven by ultraviolet-visible spectroscopy analysis. Infrared spectroscopy in the mid-infrared region of the synthesized copper nanoparticles provide evidence of the creation of chemical bonds with molecules of the plant leaf extract. The catalytic activity of copper nanoparticles was demonstrated on textiles colorants such as methylene blue, eosyne Y and methyl orange. The degradation efficacity of the copper nanoparticles is high to moderate, been 92.02%, 53.67% and 33.81% for methylene blue, eosyne Y and methyl orange respectively
Trinath Biswall,R. B. Panda, Rabiranjan Prusty,IJGHC, September 2017 – November 2017; Sec. A; Vol.6, No.4, 269-279.,DOI: 10.24214/IJGHC/GC/6/4/26979.
In recent years, attempts to increase the utilization of fly ash as a replacement for ordinary Portland cement (OPC) in concrete have increased in significance. In India the present availability of fly ash produced from coal based thermal power plants has exceeded 130 million tons and likely to increase in coming years1,2. The utilization of fly ashes needs to be increased to manage this waste stream, which is possible by understanding the geotechnical and geo-environmental behaviour of fly ash. This paper presents the findings of experimental studies with regard to important physical, chemical and geotechnical properties like grain size, specific gravity, mineralogy, morphology, compaction characteristics, unconfined compressive strength, California bearing ratio and hydraulic conductivity of fly ash3,4. Two low lime fly ashes from Indian Charge Chrome Limited, Chowdhar (ICCL) and, Rourkela Steel Plant, Captive Power plant I (RSP, CPI) thermal power plants, in and around Orissa have been used in the study. A brief account of various methods adopted in characterization is presented here. The importance of these properties in increasing the bulk utilization of fly ashes has also been brought out.
Kumar Rajesh and Bhojak N. ,IJGHC, September 2017 – November 2017; Sec. A; Vol.6, No.4, 261-267.,DOI: 10.24214/IJGHC/GC/6/4/26167.
High frequency non-ionizing electromagnetic fields that are increasingly present in the environment constitute a genuine environmental stimulus able to evolve specific responses in plants that share many similarities with those observed after a stressful treatment. The mechanism of this interference between EMF and plant tissues is not clearly understood. The present study investigated the effect of non-ionizing radiations on cluster bean (Cyamopis tetragonloba) seeds. The influence of high tension line (HTL) of 220 kV on the nutritional value of guar were determined by quantifying ash, moisture, carbohydrate, protein, fat, fiber and minerals. The antibacterial activities of guar seeds crude extract were determined against Staphylococcus aureus, Escherichia coli and Bacillus. The result revealed chemical composition of seeds were found 2.67-4.53% ash, 9.10-11% moisture, 58.80-84.67% carbohydrate, 27-33.28% protein and 10.73-11.10% fiber. While Minerals content (in ppm) were found 336-653 sodium,370-465 iron, 15.33-1977 calcium, 61-67.33 zinc and 9.47-11.40 copper. The total available carbohydrates as mannose and galactose were ranged 65-72% and 28-35% respectively. Ratio of mannose to galactose is 2:1.
Dr. PriyaDuggal,IJGHC, September 2017 – November 2017; Sec. A; Vol.6, No.4, 253-260.,DOI: 10.24214/IJGHC/GC/6/4/25360
Some novel hexa-coordinated organosilicon (IV) complexes with SiO2N2 skeleton were synthesized by conventional as well as microwave methods by the reaction of diethoxydiphenylsilane with mixed azines. The mixed azine ligands were prepared by conventional as well as microwave methods. The resulting complexes were characterized by elemental analysis, IR and multinuclear (1H, 13C, 29Si) NMR spectroscopy and molar conductance measurement. The organosilicon (IV) complexes were also screened for their antifungal activity and were found to be quite active in this respect. The basis of this technique is the observation that these reactions proceed much faster and with higher yields under microwave irradiation compared to conventional heating.