Vol 6, No 3 (Published)
Table of Contents
Open AccessOriginal Research Article
by Teerapat Anupabphan, Noppakun Kaewdam, Bancha Seataew, Torlab Nangnoi, Napan Narischat, Chonlakarn Wongkhorsub
2023,6(3);
1057 Views
Abstract
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Open AccessOriginal Research Article
by Bhamini Pandey, Hema Tewatia, Dipendra Meel, Poonam Singh
2023,6(3);
1083 Views
Abstract
Herein zinc oxide (ZnO) nanoparticles have been synthesized via a facile, environment friendly, and low-cost green synthesis method. The prepared metal oxide was characterized using powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), SEM/EDX (scanning electron microscopy/energy dispersive X-ray), volumetric analysis, and zeta potential measurements. The photocatalyst was then employed for the degradation of crystal violet (CV) dye under UV illumination (high-pressure Hg lamp 125 W). It was observed that phyto-fabricated ZnO nanoparticles exhibited high degradation efficiency towards CV dye as 95% of dye was degraded in 60 min of irradiation. The study also implies that phyto-fabrication of ZnO nanoparticles resulted in enhanced degradation efficiency of the photocatalyst.
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Open AccessOriginal Research Article
by Fatemeh Mollaamin
2023,6(3);
893 Views
Abstract
Les propriétés thermochimiques, électriques et magnétiques de la feuille monocouche de carbure de silicium de type graphène (SiC) dopé au métal de titane (Ti) sont étudiées par les méthodes des premiers principes basées sur la théorie de la fonctionnelle de la densité (DFT) pour le piégeage de CO, CO2, NO, Molécules de gaz NO2. Les résultats recommandent que l'adsorption de ces molécules de gaz sur la monocouche de feuille de SiC incorporée dans du Ti soit plus énergiquement souhaitée que celle sur les molécules vierges. Des molécules gazeuses de CO, CO2, NO, NO2 ont été adsorbées sur le site Ti d'une monocouche SiC dopée par la formation de liaisons covalentes. L'hypothèse d'adsorptions chimiques a été approuvée par la densité d'états projetée (PDOS) et les tracés de différence de densité de charge. Les calculs de différence de densité de charge indiquent également que les densités électroniques se sont principalement accumulées sur l'adsorbat de molécules de gaz CO, CO2, NO, NO2. Les résultats de cette enquête peuvent indiquer la compétence des nanofeuilles de carbure de silicium dopées aux métaux de transition dans les dispositifs de détection.
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Open AccessOriginal Research Article
by Neri Niccolai, Alfonso Trezza, Federico Marchini, Pietro Bongini, Monica Bianchini, Annalisa Santucci, Ottavia Spiga, Anna Visibelli
2023,6(3);
761 Views
Abstract
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Open AccessOriginal Research Article
by Naduvil Veettil Sarangi, Mullikkottu Veettil Saranya Prakasan, Renganathan Rajkumar, Sathiyaraj Srinivasan
2023,6(3);
858 Views
Abstract
Biomedical applications of algal-derived secondary metabolites are increasing by degrees. Seaweeds are the treasury of secondary metabolites with various biological activities. This study aims to analyze antioxidant and antimicrobial potential in green seaweed Ulva fasciata and brown seaweed Dictyota dichotoma . Extracts from four different solvents, using Soxhlet apparatus, were tested for the qualitative analysis of phytochemicals. Secondary metabolites were analyzed quantitatively to correlate with the antioxidant (DPPH assay) and antimicrobial potential of seaweeds. Results showed a better antioxidant activity of U. fasciata in its methanolic extract (89.29 %) and D. dichotoma manifested a maximum antioxidant activity of 70.1% for its Ethyl acetate extract. Structural characteristics of seaweed derived bioactive material were investigated by FTIR. The inhibition zone formed around the crude extract reveals the antimicrobial nature of bioactive substances of seaweed extract against the pathogens. High inhibition and antioxidant activity indicate an effective drug's evolution from seaweeds against human pathogens.
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Open AccessOriginal Research Article
Kinetic Modelling for COD and Nitrate-N Removal from Hatchery Wastewater through Biological Approach
by Norazwina Zainol, Nor Hazwani Aziz, Nur Husnina Mohamed Nor Rahim
2023,6(3);
768 Views
Abstract
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Open AccessOriginal Research Article
by Yu Ying, Shichen Lin, Yuan Fang, Jiahui Gu, Fenglong Gu
2023,6(3);
562 Views
Abstract
Sodium dimethyl dithiocarbamate (SDDC) is a universal heavy metal precipitant/chelating agent, which is widely used in the treatment of heavy metals in industrial wastewater and fly ash from waste incineration. It is very important as a heavy metal precipitant, fungicide, agricultural insecticide, rubber vulcanization accelerator, styrene-butadiene rubber polymerization terminator, polymerization inhibitor, mineral processing reagent, etc. This review article focuses on the research of the production and application of SDDC in heavy metal chelation. SDDC, acting as a heavy metal chelating agent, has following three advantages in the removal of heavy metals: (1) It can chelate with various heavy metal ions at room temperature to generate insoluble chelate salts and precipitates, which can be easily removed, so as to achieve the purpose of removing heavy metal pollution; (2) SDDC can perform chelation reaction with varies heavy metal ions at the same time, so as to achieve the purpose of removing varies heavy metals at one time; (3) As a heavy metal chelating agent, SDDC is simple to use and low costs, which is significantly better than other heavy metal chelating agents and precipitants. This review paper is a prospect for the R&D, production and applications of SDDC, and puts forward new ideas for the performance improvement based on SDDC.
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Open AccessOriginal Research Article
by Debela Jufar Turunesh, Gashaw Tadele Zewudie, Dereba Workineh Dereba Workineh Seboka
2023,6(3);
835 Views
Abstract
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Open AccessOriginal Research Article
by Prashant Kaushik, Nidhi Malik, Prashant Tevatia, Vinod Kumar, Prasanta Kumar Sahu, Ravinder Kumar
2023,6(3);
1562 Views
Abstract
Aldehyde, 1,2-diketones, and acid were prepared by copper-catalyzed oxidation of phenyl propyne, using t-BuOOH as the oxidant, heterogeneously. Aldehyde is formed as major product under neutral conditions. Under mild conditions, catalysis was carried out using catalytic amounts of [Cu(L)Br] with N-methyl benzimidazolyl schiff base ligand and stoichiometric amounts of oxidant in CH 3 CN. The several property of catalyst was characterized by using UV-Vis, FT-IR, PXRD, CV and Electron paramagnetic resonance techniques. Comparative SEM measurement of catalyst before and after the catalysis shows that the morphology and size of rods affect the catalytic efficiency. The percentage yields of products were determined by GC-MS.
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Open AccessOriginal Research Article
by Adrian Seth Amaba, Kristine Claire Villanueva, Noel Peter Tan, Francis Dave Siacor, Maria Kristina Paler
2023,6(3);
1295 Views
Abstract
The accumulation of plastics in landfills and oceans has encouraged the development of biodegradable plastic products from renewable sources. Natural polymers are excellent candidates that need further modification of their functional and structural properties comparable to conventional plastics. This study aims to fabricate and optimize the formulation of bioplastic films from chitosan and mango kernel starch with glycerol as a plasticizer using response surface methodology (RSM). The chitosan-to-starch mass ratio (1:0.17 to 1:5.83) and glycerol concentration per gram of dry polymer (15.86% to 44.14%) were assigned as the independent variables to design an empirical model that describes the films’ elastic modulus as the sole response. The results yielded an optimal formulation of 1:0.17 chitosan-to-starch mass ratio (2% w/v chitosan solution blend) with 15.86% glycerol (per gram of dry chitosan and starch). Reproduction of the optimized film was carried out to validate the empirical model. Characterization of the films’ mechanical and barrier properties, surface morphology, and biodegradability were also investigated in this work. The results suggest that the functional properties of the bioplastic film surpass other chitosan-based bioplastic film blends and can be developed further to become a more sustainable alternative to conventional plastic packaging products.
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Open AccessOriginal Research Article
by Sasmita Tripathy, Sharmistha Nandi, Sriparna Roy Ghatak, Parimal Acharjee, Pampa Sinha
2023,6(3);
568 Views
Abstract
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Open AccessReview Article
by Rajib Biswas
2023,6(3);
755 Views
Abstract
The increasing presence of heavy metal ions in aquatic environments has become a subject of escalating concern in contemporary times. Numerous human-induced activities have contributed to an elevated presence of heavy metal ions in aquatic environments, surpassing the threshold levels established by the World Health Organisation. Recently, there has been a significant increase in the utilisation of polyethylene glycol [PEG] due to its exceptional characteristics in addressing the pressing issue of aquatic pollution resulting from the presence of heavy metal ions. This mini review evaluates the detection activities in which PEG plays a significant role. The detection strategy utilising PEG composites is thoroughly described, beginning with an examination of the inherent properties of PEG. Furthermore, it concludes with suggestions for future research in this area.
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Open AccessReview Article
by Mohsina Patwekar, Faheem Patwekar, Daniyal Shaikh, Shaikh Rohin Fatema, Sunil J. Aher, Rohit Sharma
2023,6(3);
452 Views
Abstract
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Open AccessReview Article
by Anbazhagan Thirumalai, Agnishwar Girigoswami, Koyeli Girigoswami
2023,6(3);
826 Views
Abstract
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