کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6642640 461162 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ecotoxicity of effluents from hydrothermal treatment process for low-rank coal
ترجمه فارسی عنوان
سموم زیستی پساب های فرآوری شده از فرایند هیدروترمال برای زغال سنگ کم
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Four low-rank coals (two lignites and two sub-bituminous coals) were hydrothermally treated at 200-350 °C. The effluent obtained was examined from the aspect of ecotoxicity, using the Ames Salmonella mutagenicity assay and the acute toxicity test for freshwater organisms. The total organic carbon in the effluent was increased with an elevation of the temperature of hydrothermal treatment (HTT). When the HTT temperature was 350 °C, the effluent showed a weak mutagenicity for all of the coals. The acute toxicity of HTT effluent was examined by use of Daphnia magna (water flea) and Oryzias latipes (Japanese medaka). The effluent obtained from a hot water extraction (HWE) at 80 °C showed no toxicity. However, the HTT effluent gave toxicity, and the degree of toxicity was increased as the HTT temperature was elevated. The toxicity of 350 °C-HTT effluent was comparable to those for phenols when D. magna and O. latipes were used. The HTT and HWE effluents were analyzed by the size exclusion chromatography (SEC). The degree of toxicity was discussed in terms of the molecular weight of organic component present in the effluent.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 104, February 2013, Pages 36-40
نویسندگان
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