Volume 54, Iss. 1, 2019

Journal of Chemical Technology and Metallurgy

54, Iss. 1, 2019
ISSN 1314-7471 (print)
ISSN 1314-7978 (on line)

Prof. Dr. Bogdana Koumanova
Tel: (+ 359 2) 81 63 302
University of Chemical Technology and Metallurgy
8 Kl. Ohridski, 1756 Sofia, Bulgaria
E-mail: journal@uctm.edu


Synthesis and characterization of limited mixed sodium manganese - sodium copper sulfate dihydrates with a kröhnkite-type structure and their anhydrous analogues

Delyana Marinova, Mitko Georgiev, Tsvetelina Bancheva, Donka Stoilova


Kinetic study of the oxidation of thiosulphate by hexacyanoferrate(III) in water pools of cetyl trimethyl ammonium bromide reverse micelles

Venkata Nagalakshmi Kilana, Shyamala Pulipaka, Venkata Subba Rao Pulugurtha


A highly effectual protocol for the production of triazolo[1,2-a]indazole-triones and 2H-indazolo[2,1-b]phthalazine-triones using 1,3-disulfonic acid imidazolium hydrogen sulfate as a dual-functional catalyst

Fatemeh Masihpour, Abdolkarim Zare, Maria Merajoddin, Alireza Hasaninejad


Investigation on the kinetics of coated paper thermal aging

Dimitrina Todorova, Veska Lasheva, Greta Radeva, Radostina Cenkova


Statistical features of epoxy resin based hybrid composites reinforced with jute, banana and flax natural fibers

Narendiranath Babu T., R.V. Mangalaraja, T. Manvel Raj, D. Rama Prabha


Investigation of pyrolysis and flammability processes of vinyl acetate copolymer paints

Mаlik N. Abdikarimov, Raushan Kh. Turgumbayeva, Daulet T. Sartayev


Fire behaviour assessment of rigid polyurethane foams containıng nanoclay and intumescent flame retardant based on cone calorimeter tests

Bilal Aydoğan, Nazım Usta


Ignition time of selected ceiling materials and escape temperature time prediction of fire fighter rescue mission

Dirisu Joseph Osekhoghene, Oyedepo Sunday Olayinka, Fayomi Ojo Sunday Isaac, Okokpujie Imhade Princess


The development of inhibitors of scale formation in water circulation systems in industry, power and municipal households

Tatiana Overchenko, Svitlana Frolenkova, Victoria Vorobyova


Characterization and colour removal from an aqueous solution using bio-coagulants: response surface methodological approach

Okechukwu Dominic Onukwuli, Ifeoma Amaoge Obiora-Okafo, Monday Omotioma


Kinetic and thermodynamic study of the reaction between Bromocresol green with sodium hydroxide in an aqueous solution

Latona Dayo Felix, Adejoro Ajibade


Adsorption of a dye (crystal violet) on an acid modified non-conventional adsorbent

Oguanobi Nonso Collins, Onu Chijioke Elijah, Onukwuli Okechukwu D.


The usage of Ricinus communis as a natural adsorbent for removal of dyes from an aqueous solution

Akshay Mahajan, Vipan Kumar Sohpal, Vijay Kumar Bulasara


Modification of an industrial crude oil desalting unit by electric mixing to improve the dehydration efficiency

Forough Hosseinpour, Sattar Ghader, Mohammad Reza Rahimpour, Hamidreza Bagheri


Response surface modeling of compressive strength of high-performance concrete formulated by a high water reducing and setting accelerating superplasticizer. Box-Behnken experimental design

Mohammed Hussein Khudhair, Ahmed Mohammed Al-Anweh, Majeed Hazza Nomaan, Mohamed Berradi, Rachid Hsissou, Atigah Bekhta, Mohamed Salahdine Elyoubi, Ahmaed Elharfi


The surface charge of unsupported nano-structured titania ceramic membrane top layers with varying calcination temperatures

İlker Erdem, Muhsin Çiftçioğlu


Statistical evaluation and forecasting of the dust particles concentrations depending on the meteorological conditions

Marko I. Uzunov, Dimitar I. Pilev, Evgenia M. Savova-Videnova


Dependence of the magnetic properties of alloyed Co-Ni, Co-Sn, Ni-Sn nanopowders on the elemental compositions

Ivania N. Markova, Milena T. Georgieva, Mehmet B. Piskin, Dimitar V. Tzankov, Rositca V. Gavrilova, Boyan I. Yordanov, Ivan I. Zahariev


Synthesis of zirconia/magnesia composite coating on AZ91 magnesıum alloy

Ekin Selvi, Faiz Muhaffel, Murat Baydoğan


Dispergation of aluminum powder (aluminum flakes) in silicon enamel in presence of TroysperseTM 98C additive

Vitaliy Y. Tyukanko, Antonina N. Duryagina, Kirill A. Ostrovnoy, Oleg Petukhov, Kristina V. Makievskaya


Extraction of lithium from wastes generated in titanium production

Omirserik Baigenzhenov, Weiwei Wang, Assel Dagubayeva, Yerbol Zhaksylykuly Shabanov


Application of calcium hydrocarboaluminate for the production of coarse-graded alumina

Ekaterina Viktorovna Siziakova, Pavel Vladimirovich Ivanov, Aleksey Viktorovich Boik


Cooling condition effects on transformation temperature and microstructure of Cu81Al13Ni4Ti2 SMA

Fethi Dagdelen, M.Sait Kanca, Mustafa Boyrazli


Potentiodynamic polarization and gravimetric evaluation of corrosion of copper in 2M H2SO4 in absence and presence of ammonium dichromate as an inhibitor

Cleophas Akintoye Loto, Ojo Sunday Isaac Fayomi, Roland Tolulope Loto, Abimbola Patricia Idowu Popoola


Modeling and optimization of the inhibition efficiency of Euphorbia heterophylla extracts based corrosion inhibitor оf mild steel corrosion in HCl media using а response surface methodology

Odejobi Oludare J., Akinbulumo Olatunde A.


Technology of heat treatment of mill rolls

Konstantin N. Vdovin, Gennady A. Dubskiy, Lyudmila G. Egorova


Circular economy aspects related to steel production

Andrea Di Schino


Guide for Authors