INFLUENCE OF THERMAL TREATMENT OF THE BASALT TUFA ON ITS PHASE COMPOSITION AND SORPTION CAPACITY

The results reflecting influence of thermal treatment of basalt tufa (BT) on its phase composition and capacity of some heavy metal ions (Cu2+, Mn2+, Ni2+, Pb2+, Zn2+) sorption under the static conditions are presented. It has been found that thermal modification of tufa at 400–1000 0С results in we...

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Autores principales:	Volodymyr DIICHUK, Iryna DIICHUK, Igor KOBASA
Formato:	article
Lenguaje:	EN
Publicado:	Stefan cel Mare University of Suceava 2018
Materias:	thermal modification basalt tufa phase composition sorption capacity suspension effect Food processing and manufacture TP368-456
Acceso en línea:	https://doaj.org/article/2823a387d8d8487d9f0c21a46795eecb
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spelling	oai:doaj.org-article:2823a387d8d8487d9f0c21a46795eecb2021-12-02T18:18:26ZINFLUENCE OF THERMAL TREATMENT OF THE BASALT TUFA ON ITS PHASE COMPOSITION AND SORPTION CAPACITY2068-66092559-6381https://doaj.org/article/2823a387d8d8487d9f0c21a46795eecb2018-03-01T00:00:00Zhttp://www.fia.usv.ro/fiajournal/index.php/FENS/article/view/556/524https://doaj.org/toc/2068-6609https://doaj.org/toc/2559-6381The results reflecting influence of thermal treatment of basalt tufa (BT) on its phase composition and capacity of some heavy metal ions (Cu2+, Mn2+, Ni2+, Pb2+, Zn2+) sorption under the static conditions are presented. It has been found that thermal modification of tufa at 400–1000 0С results in weight loss of the material from 5,79 % (at 400 0C) to 10,18 % (1000 0C) caused by changes in the mineral phase composition such as loss of the chemically bound water, decomposition of carbonates and other compounds. It has been shown that the sorption value for the heavy metal ions, being captured on surface of the thermally modified BT samples, is governed by the ion’s nature and temperature of its thermal treatment. The negatively charged surface-active adsorption centers were identified for all BT samples since they exhibited the positive suspension effect. Therefore, a competition between adsorption of H+ and heavy metal ions can take place.Volodymyr DIICHUKIryna DIICHUKIgor KOBASAStefan cel Mare University of Suceavaarticlethermal modificationbasalt tufaphase compositionsorption capacitysuspension effectFood processing and manufactureTP368-456ENFood and Environment Safety, Vol 17, Iss 1, Pp 37-40 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	thermal modification basalt tufa phase composition sorption capacity suspension effect Food processing and manufacture TP368-456
spellingShingle	thermal modification basalt tufa phase composition sorption capacity suspension effect Food processing and manufacture TP368-456 Volodymyr DIICHUK Iryna DIICHUK Igor KOBASA INFLUENCE OF THERMAL TREATMENT OF THE BASALT TUFA ON ITS PHASE COMPOSITION AND SORPTION CAPACITY
description	The results reflecting influence of thermal treatment of basalt tufa (BT) on its phase composition and capacity of some heavy metal ions (Cu2+, Mn2+, Ni2+, Pb2+, Zn2+) sorption under the static conditions are presented. It has been found that thermal modification of tufa at 400–1000 0С results in weight loss of the material from 5,79 % (at 400 0C) to 10,18 % (1000 0C) caused by changes in the mineral phase composition such as loss of the chemically bound water, decomposition of carbonates and other compounds. It has been shown that the sorption value for the heavy metal ions, being captured on surface of the thermally modified BT samples, is governed by the ion’s nature and temperature of its thermal treatment. The negatively charged surface-active adsorption centers were identified for all BT samples since they exhibited the positive suspension effect. Therefore, a competition between adsorption of H+ and heavy metal ions can take place.
format	article
author	Volodymyr DIICHUK Iryna DIICHUK Igor KOBASA
author_facet	Volodymyr DIICHUK Iryna DIICHUK Igor KOBASA
author_sort	Volodymyr DIICHUK
title	INFLUENCE OF THERMAL TREATMENT OF THE BASALT TUFA ON ITS PHASE COMPOSITION AND SORPTION CAPACITY
title_short	INFLUENCE OF THERMAL TREATMENT OF THE BASALT TUFA ON ITS PHASE COMPOSITION AND SORPTION CAPACITY
title_full	INFLUENCE OF THERMAL TREATMENT OF THE BASALT TUFA ON ITS PHASE COMPOSITION AND SORPTION CAPACITY
title_fullStr	INFLUENCE OF THERMAL TREATMENT OF THE BASALT TUFA ON ITS PHASE COMPOSITION AND SORPTION CAPACITY
title_full_unstemmed	INFLUENCE OF THERMAL TREATMENT OF THE BASALT TUFA ON ITS PHASE COMPOSITION AND SORPTION CAPACITY
title_sort	influence of thermal treatment of the basalt tufa on its phase composition and sorption capacity
publisher	Stefan cel Mare University of Suceava
publishDate	2018
url	https://doaj.org/article/2823a387d8d8487d9f0c21a46795eecb
work_keys_str_mv	AT volodymyrdiichuk influenceofthermaltreatmentofthebasalttufaonitsphasecompositionandsorptioncapacity AT irynadiichuk influenceofthermaltreatmentofthebasalttufaonitsphasecompositionandsorptioncapacity AT igorkobasa influenceofthermaltreatmentofthebasalttufaonitsphasecompositionandsorptioncapacity
_version_	1718378263510777856

INFLUENCE OF THERMAL TREATMENT OF THE BASALT TUFA ON ITS PHASE COMPOSITION AND SORPTION CAPACITY

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