Thermal plasma treatment of stormwater detention pond sludge

Autor:	Helena O. L. Li, Jen-Shih Chang, Yiping Guo
Rok vydání:	2008
Předmět:	Pollution Detection limit Chemistry General Chemical Engineering media_common.quotation_subject Stormwater Detention basin Airflow Sediment Plasma treatment General Chemistry Environmental chemistry Neutron activation media_common
Zdroj:	Pure and Applied Chemistry. 80:1993-2002
ISSN:	1365-3075 0033-4545
DOI:	10.1351/pac200880091993
Popis:	A thermal plasma treatment experiment was conducted on stormwater detention pond sludge. The original sludge compositions were analyzed by neutron activation multi-element analysis. Thirty-two elements were detected in the sludge samples, and nine of them were below detection limit. The assessment of Zn, As, Mn, and Fe concentrations against the Ontario Ministry of Environment's Sediment Quality Guidelines indicated a marginal-to-significant pollution, and the concentration of Cr presented a gross pollution. After thermal plasma treatment, the mean weight percentage removal at 0 and 2 L/min of air flow rates was 2.78 ± 0.51 and 3.85 ± 1.35 %, respectively. The maximum weight removal of 5.87 % was achieved with 2 L/min air flow rate and 2 h of treatment time. Reduction of total organic carbon (TOC) increased with increasing treatment time and air flow rate. Eight gas compounds, CO, CO2, NO, NO2, NO x , SO2, H2S, and C x H y were measured and observed during the treatment process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a44b4774867c951b612d543a31d9bdac https://doi.org/10.1351/pac200880091993 Zobrazit plný text záznamu