Bioengineering and Environmental Sciences Group, Environmental Engineering and Fossil Fuels (EEFF) Division, CSIR-Indian Institute of Chemical Technology (IICT), Tarnaka, Hyderabad 500007, India; School of Engineering, Royal Melbourne Institute of Technology (RMIT), 124 La Trobe St, Melbourne, VIC 3000, Australia.
Bioengineering and Environmental Sciences Group, Environmental Engineering and Fossil Fuels (EEFF) Division, CSIR-Indian Institute of Chemical Technology (IICT), Tarnaka, Hyderabad 500007, India.
Bioresour Technol. 2018 Mar;251:364-373. doi: 10.1016/j.biortech.2017.12.069. Epub 2017 Dec 23.
This work aims to evaluate the impact of pH and initial organic load (IOL) in terms of Chemical Oxygen Demand (COD) of landfill leachate for the production of value added products during single and two stage anaerobic digestion (AD). It was observed that at an optimal IOL of 48 g/L, acetic acid was dominant at pH 5.5 whereas it was butyric acid at pH of 5.5-6.0 and 10-11. The yield of Volatile Fatty Acids (VFA) was dependent on IOL and it was in the range of 0.26 to 0.36 g VFA/(g COD removed). Methane was also harvested during single and two stage AD and found that it was varying in the range of 0.21-0.34 L CH/(g COD removed) and 0.2-0.32 L CH/(g COD removed) respectively. An overall increase of 21% COD removal was noticed in two stage AD in comparison to single stage.
本工作旨在评估 pH 值和初始有机负荷（IOL）对垃圾渗滤液在单级和两级厌氧消化（AD）过程中生产增值产品的化学需氧量（COD）的影响。结果表明，在最佳 IOL 为 48g/L 时，在 pH 值为 5.5 时，乙酸占主导地位，而在 pH 值为 5.5-6.0 和 10-11 时，则是丁酸。挥发性脂肪酸（VFA）的产率取决于 IOL，范围在 0.26 到 0.36g VFA/（g COD 去除）之间。在单级和两级 AD 过程中也收获了甲烷，发现其范围分别在 0.21-0.34L CH/（g COD 去除）和 0.2-0.32L CH/（g COD 去除）之间变化。与单级 AD 相比，两级 AD 中 COD 去除率总体增加了 21%。
