Characterization of dissolved organic carbon and disinfection by-products in biochar filter leachate using orbitrap mass spectrometry
| Autor: | Andrew J. Hunt, Nontipa Supanchaiyamat, Thunyalux Ratpukdi, Sumana Siripattanakul-Ratpukdi, Atcharaporn Youngwilai, Eakalak Khan, Yuvarat Ngernyen, Phanwatt Phungsai |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Halogenation Health Toxicology and Mutagenesis Dissolved Organic Matter Mass Spectrometry law.invention Water Purification Adsorption law Biochar Dissolved organic carbon Environmental Chemistry Organic matter Leachate Leaching (agriculture) Waste Management and Disposal Chloramination Filtration chemistry.chemical_classification Chemistry Pollution Disinfection Environmental chemistry Charcoal Water Pollutants Chemical Disinfectants |
| Zdroj: | Journal of hazardous materials. 424 |
| ISSN: | 1873-3336 |
| Popis: | Biochar is a low-cost adsorbent with considerable potential for utilization as a water filtration medium; however, organic matter leaching from biochar can lead to the formation of disinfection by-products (DBPs). This study investigated the leaching of dissolved organic carbon (DOC) from eucalyptus-derived biochar and the formation of DBPs generated by chlorination and chloramination. Column experiments with empty bed contact times (EBCTs) of 10 and 30 min were conducted for 200 bed volumes (BVs). The highest DOC concentration (3.5 µg-C/g-biochar) was detected with an EBCT of 30 min. Chloroform (49 µg/L) and dichloroacetonitrile (7 µg/L) because of chlorination were found during the first five BVs, but were reduced thereafter. During the first 10 BVs, unknown chlorinated DBPs generated (CHOCl) by chlorination and chloramination (193 and 152 formulae, respectively) were tentatively identified via an unknown screening analysis. The release of DBP precursors from biochar tentatively identified in this study will impact water filtration applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect