Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli, India.
Department of Civil Engineering, Regional Centre for Anna University, Tirunelveli, India.
Environ Technol. 2021 Apr;42(11):1703-1714. doi: 10.1080/09593330.2019.1677784. Epub 2019 Oct 20.
This study investigates the symbiotic effect of cetyltrimethylammonium bromide (CTAB) coupled with sonication of fruits and vegetable dregs (FVD) on disintegration and subsequent energy efficient methane production. The liquefaction of FVD experiments was conducted by varying dosage of surfactant from 0.001to 0.01 g/g SS for 60 min in mechanical shaker. The optimised dosage of surfactant was combined with sonication. Finally, the combined pretreatment and sole pretreatment were assessed using methane potential assay. The results revealed that at optimised conditions (sonication specific energy of 5400 kJ/kg TS, CTAB dosage of 0.006 g/g SS), the maximum liquefiable organics release rate and solids reduction of CTAB mediated sonic disintegration (CSD) were found respectively to be 27% and 17% more than the ultrasonic disintegration (16% and 10%). CSD was noticed to be superior than ultrasonic disintegration (UD) based on highest volatile fatty acid yield (2000 mg/L vs. 1250 mg/L) and biochemical methane potential (203 mL/g COD vs. 144 mL/g COD). CSD achieved energy ratio of 0.9 which is greater than ultrasonic disintegration energy ratio 0.4.
本研究调查了十六烷基三甲基溴化铵（CTAB）与果蔬渣（FVD）超声协同作用对崩解和随后高效产甲烷的共生效应。通过在机械摇床中 60 分钟内将表面活性剂用量从 0.001 至 0.01 g/g SS 变化来进行 FVD 的液化实验。优化的表面活性剂用量与超声相结合。最后，使用甲烷潜能测定法评估了联合预处理和单一预处理。结果表明，在优化条件下（超声特定能量为 5400 kJ/kg TS，CTAB 用量为 0.006 g/g SS），CTAB 介导的超声崩解（CSD）的最大可液化有机物释放率和固体减少率分别比超声崩解（UD）高 27%和 17%（分别为 16%和 10%）。CSD 比超声处理（UD）优越，因为它具有更高的挥发性脂肪酸产量（2000 mg/L 比 1250 mg/L）和生物化学甲烷潜能（203 mL/g COD 比 144 mL/g COD）。CSD 的能量比为 0.9，大于超声处理的能量比 0.4。
Environ Sci Pollut Res Int. 2016-2
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