Dr Hemlata Raikwar, Dr.Anita Choubey; IJGHC, March 2018 – May 2018; Sec. A; Vol.7, No.2, 351-354.; DOI: 10.24214/IJGHC/GC/7/2/35154.
Black liquor is the major by-product and fuel of pulp mills. The Kraft extraction is a mature, effective technology that provides for recycling of the pulping chemical, efficient generation of steam and electrical power from the value of the black liquor and effective disposal of disposal of dissolved wood substances. The process how faces significant challenges with respect to air emissions, effluent discharge and need for improved energy recovery and utilization means for dealing with these uses available ,but they can costly new technology may result in significant energy benefits.
B. Amudhavalli, M. Prasath, P. Srinivasan and A. David Stephen;IJGHC, March 2018 – May 2018; Sec. A; Vol.7, No.2, 343-350.;
The Structural and bond topological and electrostatic properties of 2,4,6-Trinitropyridine N-oxide molecule have been studied using the DFT and AIM analysis. The optimized (B3LYP/6-311G** and B3LYP/aug-cc-PVDZ) geometric parameters are in excellent agreement with the experimental data. The TNPyO molecule C–NO2 and N–O (N-oxide) bonds are weak, which confirms that these bonds are the weakest bonds in the molecule. Further, the TNPyO molecule reveals negative oxygen balance (-0.86%) and its energy gap is 3.45 eV. The MEP map shows that the negative potential sites are on electronegative atoms while the positive potential sites are around the hydrogen atoms. These observations give an insight on this kind of explosive material, which are useful to design navel explosives molecules.
C. J. Patil, Manisha Patil, C. A. Nehete; IJGHC, March 2018 – May 2018; Sec. A; Vol.7, No.2, 335-342.; DOI: 10.24214/IJGHC/GC/7/2/33542.
Compounds containing >C=N- (azomethine) were prepared from Benzaldehyde with Aniline and o-Hydroxy-Acetophenone with o-Nitro-Aniline respectively by conventional and green chemical synthesis microwave technique. The products are tested in process and the completion of reaction is ascertain by TLC. The final products were characterized by analytical viz. TLC, physical viz. m.p., Instrumental viz. UV-Vis and FTIR spectral techniques. Their biological activities were also evaluated.
Deepti Rangnani; IJGHC, March 2018 – May 2018; Sec. A; Vol.7, No.2, 327-334.; DOI: 10.24214/IJGHC/GC/7/2/32734.
Metal contamination issues are becoming increasing day by day common in India and elsewhere with many documented cases of metal toxicity in mining industries, foundries, smelters, coal-burning power plants and agriculture. Heavy metals such as Cr, Cu, Zn, Mn, Pb are major environment pollutants therefore it is necessary to treat metal contaminated waste water prior to its discharge to the environment. The absorption process is being widely used by various researchers for the removal of heavy metals from waste streams. Adsorption is suitable even when the metal ions are present in concentration as low as 1 mg/l. The adsorbent may be of mineral, organic or biological origin, zeolites, industrial by product, agricultural waste, biomass and polymeric materials. In the present study dry biomass of Amaltas [cassia fistula] is used as adsorbent to study the process of bio sorption. The cell walls of dry biomass consist of cellulose, lignin, carbohydrate which have hydroxyl group in their structure and could be good adsorbent for contamination. Metal uptake is believed to occur through sorption process involving carboxylic and phenolic functional groups which result in formation of surface complexation mechanism between metal ions and lignocellulosic adsorbents.
V. Garg, Jyoti, Rohit dutt; IJGHC, March 2018 – May 2018; Sec. A; Vol.7, No.2, 313-326.; DOI: 10.24214/IJGHC/GC/7/2/31326.
The family Plumbaginaceae consists of 10 genera and 280 species. The genus Plumbago includes 55 plants. Some plants are common like Plumbago aphylla Bojer Ex Bioss, P. auriculata Lam (P.capensis), P. caerulea Kunth, P. wissii Friedrich, P. europaea L, P. indica L (P. rosea), P. pulchella Bioss, P. zeylanica L. Out of these eight species of Plumbago, P. zeylanica, P. indica and P. auriculata are very common. P. zeylanica is broadly used for commercial preparation of medicines due to its biological activities. Literature review on Genus Plumbago has been compiled using references from major databases such as Chemical Abstracts, Medicinal and Aromatic Plants Abstracts, Pub-Med, Science direct, Scifinder, Springer, Phyto-chemical and Ethano-botany database. The available information on Plumbago has been divided into six sections, that is, distribution, morphology, macroscopy, microscopy, phyto-constituents, ethno-pharmacology, pharmacological studies, covering prominent species i.e. P. zeylanica, P. indica, P. auriculata.