| Title: | Evaluation of volatile fatty acids and ammonia recovery approach from landfill leachate using pilot-scale mechanical vapor recompression |
| Author(s): | Ciftcioglu-Gozuacik B; Sen G; Goze S; Ozbey-Unal B; Balcik C; Karagunduz A; Keskinler B; |
| Address: | "Department of Environmental Engineering, Gebze Technical University, Kocaeli, 41400, Turkey. Institute of Earth and Marine Sciences, Gebze Technical University, Kocaeli, 41400, Turkey. Department of Environmental Engineering, Gebze Technical University, Kocaeli, 41400, Turkey. Electronic address: bkeskinler@gtu.edu.tr" |
| DOI: | 10.1016/j.jenvman.2023.118720 |
| ISSN/ISBN: | 1095-8630 (Electronic) 0301-4797 (Linking) |
| Abstract: | "Treatment of landfill leachate is still a current problem due to the high treatment costs in addition to the difficulty of meeting the discharge criteria. However, there is a more important issue that should be underlined; it is also valuable compounds that leachate contains. Conventional methods used for treatment of leachate such as membrane filtration, advanced oxidation processes, biological processes and their combinations have largely focused on treatment. However, the recovery of ammonia and volatile organic acids (VFA) in leachate is a promising approach both to overcome high treatment costs and to sustainably manage leachate. In this study, leachate treatment potential was investigated by mechanical vapor recompression (MVR) process, which offers an operational opportunity to recover high value-added products from leachate while providing an effective treatment for wastewater. Optimum operating conditions for the pilot-scale MVR process have been determined by laboratory-scale studies. VFAs were recovered as organic acid salts from the pilot-scale MVR distillate, while ammonia recovery was accomplished as ammonium sulfate from a highly contaminated concentrate stream. VFA and ammonia recovery rates were 89% and 99%, respectively. The treatment cost of leachate with MVR process was calculated according to the data obtained in pilot scale MVR studies considering the operating cost, chemical cost and economical contribution of value-added products. The results showed that the integrated MVR-crystallization process, all treatment costs are covered, with a net gain of 3.8 USD/m(3). Consequently, MVR integrated crystallization process offers an economical and sustainable solution for the treatment of leachate by recovering valuable products" |
| Keywords: | "*Ammonia *Water Pollutants, Chemical/chemistry Gases Fatty Acids, Volatile Oxidation-Reduction Leachate treatment Mvr Recovery of VFAs Recovery of ammonia;" |
| Notes: | "MedlineCiftcioglu-Gozuacik, Bengisu Sen, Gulisah Goze, Siyar Ozbey-Unal, Bahar Balcik, Cigdem Karagunduz, Ahmet Keskinler, Bulent eng England 2023/08/04 J Environ Manage. 2023 Nov 1; 345:118720. doi: 10.1016/j.jenvman.2023.118720. Epub 2023 Aug 1" |
