Efficient removal of mercury from acidic solutions of HgCl2 by sorbents prepared from vegetable oils by inverse vulcanization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F22%3A00558242" target="_blank" >RIV/67985858:_____/22:00558242 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0331964" target="_blank" >http://hdl.handle.net/11104/0331964</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Efficient removal of mercury from acidic solutions of HgCl2 by sorbents prepared from vegetable oils by inverse vulcanization

Popis výsledku v původním jazyce

Mercury is a dangerous toxic element for the environment. Incineration of municipal solid waste (MSWI) belongs to important sources of Hg-emissions today. Conversion of mercury and mercury compounds from soluble and toxic forms into water insoluble/non-toxic form of HgS is needed in waste residues from flue gas cleaning. Gaseous HCl and a significant part of HgCl2 vapors present in flue gas from MSWI can be removed from flue gas by absorption into hot water. Efficiencies of Hg2+ removal from acidic water solutions by means of sorbents prepared by catalyzed reaction of sulfur with vegetable oils (inverse vulcanization) were studied. These kinds of sorbents were tested and nfound to be exploitable for removal of mercury ions from water solutions, particularly from acidic solutions containing HCl at higher temperatures (50 – 75 oC), also in presence of salts of some other metallic elements (Fe, Zn, Ca). Mercury adsorbed on such sorbents changes relatively quickly into non-toxic form of HgS. Leaching of zinc from the catalyst (Zn-diethyl-dithiocarbamate) contained in the vulcanized sorbents is negligible at neutral pH conditions and small (about 10 %) at acidic conditions (pH = 1.5).n

Název v anglickém jazyce

Efficient removal of mercury from acidic solutions of HgCl2 by sorbents prepared from vegetable oils by inverse vulcanization

Popis výsledku anglicky

Mercury is a dangerous toxic element for the environment. Incineration of municipal solid waste (MSWI) belongs to important sources of Hg-emissions today. Conversion of mercury and mercury compounds from soluble and toxic forms into water insoluble/non-toxic form of HgS is needed in waste residues from flue gas cleaning. Gaseous HCl and a significant part of HgCl2 vapors present in flue gas from MSWI can be removed from flue gas by absorption into hot water. Efficiencies of Hg2+ removal from acidic water solutions by means of sorbents prepared by catalyzed reaction of sulfur with vegetable oils (inverse vulcanization) were studied. These kinds of sorbents were tested and nfound to be exploitable for removal of mercury ions from water solutions, particularly from acidic solutions containing HCl at higher temperatures (50 – 75 oC), also in presence of salts of some other metallic elements (Fe, Zn, Ca). Mercury adsorbed on such sorbents changes relatively quickly into non-toxic form of HgS. Leaching of zinc from the catalyst (Zn-diethyl-dithiocarbamate) contained in the vulcanized sorbents is negligible at neutral pH conditions and small (about 10 %) at acidic conditions (pH = 1.5).n

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/EF16_026%2F0008413" target="_blank" >EF16_026/0008413: Strategické partnerství pro environmentální technologie a produkci energie</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings 48th International Conference of the Slovak Society of Chemical Engineering SSCHE 2022 and Membrane Conference PERMEA 2022

ISBN

978-80-8208-070-7

ISSN

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e-ISSN

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Počet stran výsledku

13

Strana od-do

1-13

Název nakladatele

Faculty of Chemical and Food Technology STU

Místo vydání

Bratislava

Místo konání akce

Tatranské Matliare

Datum konání akce

23. 5. 2022

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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