Number of the records: 1

Remediation of brownfields contaminated by organic compounds and heavy metals: a bench-scale test of a sulfur/vermiculite sorbent for mercury vapor removal.

SYSNO ASEP	0533656
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Remediation of brownfields contaminated by organic compounds and heavy metals: a bench-scale test of a sulfur/vermiculite sorbent for mercury vapor removal.
Author(s)	Topka, Pavel (UCHP-M)_{RID, ORCID, SAI} Soukup, Karel (UCHP-M)_{RID, SAI, ORCID} Hejtmánek, Vladimír (UCHP-M)_{RID, SAI} Hlásenský, I. (CZ) Kaštánek, František (UCHP-M)_{RID, SAI, ORCID} Šolcová, Olga (UCHP-M)_{RID, ORCID, SAI}
Source Title	Environmental Science and Pollution Research. - : Springer - ISSN 0944-1344 Roč. 27, č. 33 (2020), s. 42182-42188
Number of pages	7 s.
Language	eng - English
Country	DE - Germany
Keywords	brownfield remediation ; thermal desorption ; vermiculite
Subject RIV	CI - Industrial Chemistry, Chemical Engineering
OECD category	Chemical process engineering
R&D Projects	TA04020700 GA TA ČR - Technology Agency of the Czech Republic (TA ČR)
Method of publishing	Limited access
Institutional support	UCHP-M - RVO:67985858
UT WOS	000566047600008
EID SCOPUS	85090300730
DOI	10.1007/s11356-020-10696-1
Annotation	In this study, we report for the first time a novel type of sorbent that can be used for mercury adsorption from the air-based off-gasses-vermiculite impregnated with alkali polysulfides and thiosulfates. In contrast to other sorbents, vermiculite exhibits superior thermal stability in air and low adsorption capacity for organic vapors. This allows for a more favorable design of the soil remediation unit-direct coupling of thermal desorber with catalytic oxidizer using air as a carrier gas. In the bench-scale test at 180 degrees C, the sulfur/vermiculite sorbent exhibited significantly higher efficiency for the adsorption of mercury vapor from the off-gasses than the commercial sulfur/activated carbon sorbent at its highest operating temperature (120 degrees C). The average mercury concentration in the adsorber off-gas decreased from 1.634 mg/m(3) for the sulfur/activated carbon to 0.008 mg/m(3)achieved with impregnated vermiculite. The total concentration of organic compounds in the soil after thermal desorption was below the detection limit of the employed analytical method.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2021
Electronic address	http://hdl.handle.net/11104/0311984

Number of the records: 1