VFA and ammonia from residential food waste as indicators of odor potential |
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| Authors: | N Qamaruz-Zaman MW Milke |
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| Institution: | 1. School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Pulau Pinang, Malaysia;2. Department of Civil and Natural Resources Engineering, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand;1. Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, No. 18, Shuangqing Rd, Beijing, 100085, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China;3. College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China;1. School of Environment, Tsinghua University, Beijing 100084, China;2. Department of Environmental Engineering, Technical University of Denmark, Miljoevej, Building 113, 2800Kgs, Lyngby, Denmark;1. School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Beijing Municipal Institute of Labor Protection, Beijing 100054, China;3. Beijing Environmental Engineering Technology Co, Ltd., Beijing 100101, China;4. Engineering Technology Research Center of Beijing MSW Comprehensive Treatment and Utilization, Beijing 100101, China;5. China Building Material Test & Certification Group Co., Ltd, Beijing 100024, China |
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| Abstract: | Research was conducted to determine suitable chemical parameters as indicators of odor from decomposing food wastes. Prepared food scraps were stored in 18 l plastic buckets (2 kg wet weight each) at 20 °C and 8 °C to reproduce high and low temperature conditions. After 1, 3, 7, 10 and 14 days of storage, the odor from the buckets were marked to an intensity scale of 0 (no odor) to 5 (intense) and the corresponding leachate analyzed for volatile fatty acids, ammonia and total organic carbon. A linear relationship between odor intensity and the measured parameter indicates a suitable odor indicator. Odor intensified with longer storage period and warmer surroundings. The study found ammonia and isovaleric acid to be promising odor indicators. For this food waste mixture, offensive odors were emitted if the ammonia and isovaleric acid contents exceeded 360 mg/l and 940 mg/l, respectively. |
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