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1795 articles for “different”
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Evaluation of Some Trace Metals (Zn, Cd, Cu and Pb) in Sewage Sludge Samples Taken from Some Pumping Stations in Benghazi-Libya
Abstract: Due to the little data available on the levels of trace metals concentration in sewage sludge in and around Benghazi city, it was necessary to determine the current concentration, composition, distribution and sources of trace metals in the sludge of different wastewater treatment plants. Accordingly, raw sewage sludge samples collected from sixteen wastewater-pumping stations at Benghazi city have undergone evaluation of pH and some trace metals concentrations (mainly Zn, Cd, …
Published in International Journal of Environmental Chemistry · Vol. 6, Issue 2, 2020 · pp. 13–19 Read article
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Electronic Waste Vs Environmental Sustainability: Global Ultimatum to Society
Abstract: We often suppose that the risks of electronic waste solely have an effect on us which come back directlywith it and are in the main a consequence of inappropriate handling. Obviously, this can be right andthere are many studies that proof the risks ensuing from direct contact with harmful materialscomparable to lead, metal or chromium. The studies together alert us concerning however differentelements, let's say brominated flame retardants generate toxic …
Published in International Journal of Environmental Chemistry · Vol. 7, Issue 1, 2021 · pp. 1–5 Read article
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Assessment of Knowledge and Participation on Households Solid Domestic Waste Management in Some Selected Communities in Bo Southern Sierra Leone
Abstract: A well-managed, effective waste management program increases the health and environmental quality of the country. Therefore, the overall aim of this study was to investigate the knowledge and participation of household solid domestic waste management in some selected communities in Bo city Southern Sierra Leone. The study's objectives were: to determine the different methods of solid wastedisposal, to determine existing household solid waste management practices, to determine the risk factors …
Published in International Journal of Environmental Chemistry · Vol. 8, Issue 1, 2022 · pp. 8–17 Read article
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Review Paper on Solid Waste Management in India
Abstract: Solid waste management is a major problem in urban areas of India. It is due to large urbanization, industrialization, and increasing population. The solid waste management systems ranked very poorly in India over the last few decades. Approximately 90% of residual waste is dumped instead of its proper landfilling. The solid waste management system should be improved in India because it will be beneficial for our future generations and the …
Published in International Journal of Environmental Chemistry · Vol. 8, Issue 1, 2022 · pp. 66–71 Read article
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Pitaya Cactus Endophytic Bacteria a Sustainable Option to Reduce and Optimize NH4NO3 in Phaseolus vulgaris
Abstract: The Phaseolus vulgaris crop demands nitrogen fertilizer as NH4NO3 for healthy growth. However, the application of NH4NO3 not uptaken by plant roots, generates N2O, a gas that contributes to the greenhouse effect besides loss of soil fertility; a sustainable option is to reduce up to 50% and to optimize it by inoculating P. vulgaris seeds with genera and species of plant growth promoting endophytic bacteria isolated from a desert xerophyte …
Published in International Journal of Environmental Chemistry · Vol. 8, Issue 2, 2022 · pp. 34–42 Read article
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Newly developed closed ecological cycle for solving environmental problems and obtaining high-quality biofuels
Abstract: Stagnant "green" zones of freshwater lakes, resulting from the excessive reproduction of phytoplankton in sunlit, stagnant waters, present a grave environmental hazard by causing the demise of phytoplankton and fish, and releasing hydrogen sulfide, rendering the water unsuitable for agricultural purposes. In this regard, the development of a closed ecological cycle, including the concentration of phytoplankton from the "green water" of the lake, which allows using most of the phytoplanktonconcentrate …
Published in International Journal of Environmental Chemistry · Vol. 9, Issue 1, 2023 · pp. 41–55 Read article
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Use of Pesticides leads to Environmental degradation
Abstract: Pesticides are extensively used for agriculture but residues can reach aquaticecosystems, frequently. They are transferred from pytoplankton to fish and human, ultimately. Pyrethroid insecticides are utilized in place of organochlorine,organophosphorus and carbonate to control different forms of pests and raise yield. Pyrethroid intoxication causes cellular damage and increases freeradicals, which leads to lipid peroxidation and, ultimately, oxidative stress.To reduce damage to environment and biologicalsystems by pesticides should be played attention …
Published in International Journal of Environmental Chemistry · Vol. 9, Issue 1, 2023 · pp. 75–78 Read article
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Ultrasonic Study of Binary Liquid Mixtures of Triethyl Amine With Primary Alcohols at 303.15 K
Abstract: Most of the physical properties change whenever there is a change in the composition and structure of the liquid mixture. Then non-linear dependence of the physical–chemical properties with composition has been attributed to the size, shape, and polarity of the molecules. Ultrasonic velocity is one such property which is very important for the study of molecular interactions in solution. It gives information about the extent of interaction and some other …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 2, Issue 1, 2016 Read article
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Effect of TiO2 on HER Activity of Electrodeposited Zn–Ni Coatings
Abstract: This paper demonstrates the improved electrocatalytic behavior of Zn–Ni alloy coatings for alkaline hydrogen evolution reaction (HER), due to addition of TiO2 nanoparticles into the bath. Zn–Ni alloy coatings have been electrodeposited galvanostatically on copper, with wide compositional range (2.31–7.91 wt. % of Zn) at different current densities (c.d.) between 2.0 and 5.0 A dm-2. The electrocatalytic behaviors of all coatings have been studied for alkaline HER in 1.0 M …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 3, Issue 1, 2017 Read article
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MANUFACTURING OF CHLORINATED PARAFFIN WAX AND SULPHO CHLORINATED PARAFFIN WAX
Abstract: The use of chlorinated paraffin wax and sulpho-chlorinated paraffin wax in daily life is increasing day by day. They are used as flame retardant, in rubber industry, paints, adhesives, caulks, sealants, and manufacturing of different types of plastics like PVC. Here in this article, we have presented the manufacturing process for chlorinated paraffin wax (including sulpho) along with chemical reaction and mass balance. Keywords: Chlorinated paraffin wax, Manufacturing process, Mass …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 4, Issue 1, 2018 · pp. 1–4 Read article
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Identification of the Most Stable Guanine Tautomer for Hydroxylation Reaction Mechanism Studies using DFT calculations
Abstract: Abstract: Identifying the most stable tatutomer for reaction mechanism studies is essential. For this reason, the present work was intended to explore the most stable and reactive guanine tautomer. To explore the most stable guanine tautomer a DFT/B3LYP method and level of theory were applied for electronic structure calculation and quantum mechanical description. Guanine was shown to exist in four different tautomeric forms (2AX 19 H, 2AX 17 H, 2AX …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 4, Issue 1, 2018 · pp. 11–20 Read article
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EFFECTS OF THE LABORATORY ASSISTED LECTURE METHODS ON ACADEMIC ACHIEVEMENT OF GRADE 8 STUDENTS IN CHEMISTRY SUBJECT IN FINOTE SELAM WOREDA, AMHARA REGION
Abstract: In Science education, laboratories are considerably important because they provide the opportunity for students to perform various hands-on activities. The aim of this study was to examine the comparative effects of the laboratory assisted and lecture methods on primary school students’ achievements in chemistry subject. With this aim, four research questions and four hypotheses guided the study. Sixty six (66) students (12 male and 11 female in the experimental group …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 4, Issue 2, 2018 · pp. 1–9 Read article
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Synthesis and Characterization of Polyurethane in Powder Form
Abstract: Polyurethanes (PUs) are defined as a class of versatile materials with great potential for use in different applications, especially based on their structure-property relationships. Their specific mechanical, physical, biological, and chemical properties are attracting significant research to tailor made PUs for various applications. Enhancement of the properties and performance of PU-based materials are achieved through altering the production process or the raw materials used in their fabrication or via the …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 4, Issue 2, 2018 · pp. 22–27 Read article
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Review in Chemical Structures of Common Compounds
Abstract: Our review deals with chemical structures of common chemical compounds which collected for interesting , There are several different names of chemical compounds , but for example when you for phenol derivative or amine derivatives , you are referring to a great tables from compounds in this field., There are millions of known chemical compounds yet to be discovered due to the great variety of compounds a naming system was …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 5, Issue 1, 2019 · pp. 1–15 Read article
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Millard Reaction: The Chemical Reaction of Browning, Flavoring and Aroma Through the Science of Cooking.
Abstract: The Maillard reaction is a step in the formation of advanced glycation endproducts (AGEs). It is tracked by measuring pentosidine. Even though the Maillard reaction has been studied most extensively in food science, it has also displayed and shown correlation in many different diseases in the body of human being, especially in degenerative eye diseases. In normal conditions, these diseases are due to the accumulation of advanced glycation endproducts (AGEs) …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 5, Issue 2, 2019 · pp. 9–19 Read article
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Green Synthesis of Nickel(II) and Zinc(II) Complexes of Bis(Imine) Schiff base Derived from o-vanilline and m-phenylenediamine.
Abstract: The synthesis of Schiff base ligand derived from aromatic aldehyde (o-vanillin) and m-phenylenediamine via liquid-assisted mechanochemical synthesis (LAG) in the presence of small amount of dimethylformamide were reported. The Schiff base complexes of Ni(II) and Zn(II) were also synthesized mechanochemically and characterized using infra-red spectroscopy, thermogrametric analysis, energy dispersive x-ray analysis, powder x-ray diffraction, UV-Visible analysis, conductivity measurement, magnetic susceptibility measurement and CHN, micro-analysis. Infrared spectral study indicated a strong …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 6, Issue 1, 2020 · pp. 31–43 Read article
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SYNTHESIS AND IR-SPECTROSCOPIC STUDY OF MIXED LIGAND COMPLEX COMPOUNDS OF COPPER (II) FORMAT WITH SOME AMIDES
Abstract: Complex compounds of metals with amides, having biological activity are widely used in agriculture. Complex compounds of copper with organic ligands are physiologically active, participating in the vital processes of living organisms; the formiats have bactericidal and fungicidal properties. For the first time, mixed ligand complex compounds of copper (II) formate with formamide, thiocarbamide, acetamide and carbamide in an aqueous solution were synthesized. Using the methods of IR spectroscopy and …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 6, Issue 2, 2020 · pp. 31–38 Read article
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Review on Azomethine-Compounds with Their Applications
Abstract: Azomethine derivatives are very important and the initiating compound for most synthetic chemistrycompounds in all their fields. Since R, R1 is an alkyl or aryl group, the first to prepare and isolate itwas the German scientist Hugo Schiff in 1864 from the condensation of the carbonyl group (aldehyde,ketone) with a primary amine compound (aliphatic, aromatic). During the past few decades there hasbeen great interest in Schiff base compounds. The rules …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 7, Issue 2, 2021 · pp. 1–10 Read article
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NBR/PVC Blends Production, Testing and Applications: An Overview
Abstract: PVC due to its polar nature allows preparation of compatible blends with other polymers. Main and unique property of NBR is its oil resistance and it is used in such application even after higher cost than natural and synthetic rubbers. PVC possesses good oil resistance but needs additional plasticizer which can be extracted by solvents; thus, plastic becomes hard and brittle during the life cycle of the product. There are …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 7, Issue 2, 2021 · pp. 22–25 Read article
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Deciphering Foam: Exploring Antifoaming Agents and Their Mechanism
Abstract: Antifoaming agents are critical additives employed in industrial processes to counter foam formation, which can hinder efficiency and cause equipment damage. These agents, available in various formulations like silicone-based, mineral oil-based, and polyethylene glycol-based, are selected based on specific foam properties and operating conditions. Choosing the right antifoam agent is crucial, with silicone-based ones often preferred for their stability and effectiveness across different pH levels and temperatures. Conversely, mineral oil-based …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 9, Issue 2, 2023 · pp. 32–36 Read article