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Apr 28, 2023Open Access
Diclofenac (DCF) is a non-steroidal anti-inflammatory drug (NSAID) used to relieve pain in joint-related diseases. It is not completely metabolized after consumption and cannot be easily removed using conventional wastewater treatment. DCF has been detected in water bodies and may pose chronic effects on the endocrines of living organisms even at low-level exposure. Heterogeneous photocatalysis provides an alternative and efficient method of degrading DCF. In this study, the photocatalytic remov...
Dec 27, 2022Open Access
Calcium carbonates, ground and precipitated, have an established role in material engineering where they serve as fillers and pigments. In this study monohydrocalcite (MHC) was produced from artificial industrial waste brines as a means of sequestering CO 2, and assessed as a potential functional filler, where its properties were compared with other minerals used in the industry. The results from the morphological analysis which compared MHC with the shapes and sizes of filler crystall...
Jul 19, 2022Open Access
Black oil sunflower seeds ( Helianthus annuus L) are the preferred feed for wild birds due to their high calorie content and their thin hulls. However, the oils can spoil easily in humid and hot climates resulting in wastage. Our hypothesis is that we can synthesize copper nanoparticles (CuNPs) using sunflower seeds as a reducing agent. The process used involved a solution of copper sulfate, an extract of black oil sunflower seeds, and starch as a capping agent. Visual observation showed a...
Nov 22, 2017Open Access
The study is focused on the use of solar energy in
extracting essential oil as alternative process of extracting essential oil. In
particular, it determined the rate of extraction and percent yield at normal
temperature and weather condition. Four kinds of plant samples with known
aromatic characters and pharmaceutical importance, Sambong (Conyza balsamifera Lin ...
Nov 14, 2016Open Access
The proposed process
basically combines two decades old
processes (Solvay and Dow Magnesium) for the manufacture of soda ash and
magnesium, respectively into a single process that also produces “partially-desalinated”
water. It does so by subjecting salt brines first, to ammonia causing two
simultaneous actions: 1) the absorption of ammonia forming what is called
“ammoniated brine”, and 2) the precipitation of magnesium ions, foun ...
Oct 13, 2014Open Access
A convenient, environmentally friendly and mild
green synthesis of imidazolidine-2-thiones, hydantoin and thiohydantoin
derivatives was developed by the one-pot reaction of benzils, urea or thiourea
derivatives, and strong base at with grinding. The key advantages are the short
reaction times, excellent yields, simple workup, and easy purification in the
solvent-free condition. The present method aimed to overcome the limitations
and drawbacks of the reported methods such as hard work-up, low yi...
Oct 06, 2014Open Access
The use of polyamide coatings for electrical
applications is restricted mainly because of its inadequate flame retardant
behaviour. In order to improve its flame retardant behaviour, polyamide is
modified by incorporating phosphorus moiety in its backbone. The structure of
the phosphorus and poly amide was confirmed by infrared spectroscopy (FT-IR),
NMR, thermo gravimetric analysis (TGA), differential scanning calorimetry
(DSC), UL-94 vertical burning tests and char residue tests. From the resul...
Sep 15, 2014Open Access
Improved laboratory protocols for convenient and rapid transformations are highly desired in modern synthetic chemistry. Microwave irradiated reactions have received considerable attention in recent years and it is a subject of intense discussion in the scientific community. Microwave heating is more efficient in terms of the energy used, produces higher temperature homogeneity and is considerably more rapid than conventional heating methods. This technique as an alternative to conventional ener...
Aug 27, 2014Open Access
Green
chemistry is an eco-friendly and rapid emerging field of chemistry which offers
a green alternative to conventional chemistry practices. It focuses on the
reduction, recycling and removal of the use of toxic and hazardous chemicals
through innovative alternative routes making desired products with minimum
environment impact. Its growing importance is in exploitation of maximum
possible resources in such a way that, there is minimum production of un ...
Jun 18, 2014Open Access
Selective methods of thermocatalytic determination of carbon oxide and hydrocarbons in exhaust gases of vehicles are based on measurement of different thermo effects of oxidation of a combustible mixture, obtained from two identical thermosensible elements working at different temperatures are developed. At one temperature there is an oxidation of all analyzed gas mixture, and on another—the mixture without a selectively determined component and by the difference of thermo effects an exact conce...
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