Wang Yuqi, Chen Mengyao, Xu Jingna, Qi Nan, Dong Lili, Cao Guangli, Zhao Xin
School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China.
School of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China.
Environ Res. 2022 Apr 1;205:112457. doi: 10.1016/j.envres.2021.112457. Epub 2021 Dec 4.
In the context of "Peak CO emissions & Carbon neutrality", H energy, as the green and clean energy, will make an important contribution to the carbon emission reduction and carbon neutralization. Bio-H production from organic wastewater achieved not only pollutants removal, but also the H energy recovery and carbon emission reduction. In this study, a maltose-preferring producer of Clostridium butyricum NH-02 was investigated for the potential and performance of bio-H production from brewery wastewater in batch and semi-continuous fermentation. Appropriate initial pH 7.0 and organic loading of 21,173 mg/L chemical oxygen demand (COD) (2670 mg/L reducing sugar (RS)) stimulated the batch H fermentation efficiency with a maximum H yield of 1.89 mol-H/mol-RS and cumulative H production of 479.3 mL/L. Comparing to the batch fermentation, semi-continuous fermentation showed significant improvement in H productivity and yield. The maximum cumulative H yield of 5.21 mol-H/mol-RS and production of 254.78 mL were obtained with the optimal hydraulic retention time (HRT) at 47 h after a 120 h fermentation. This study demonstrated the potential of H production from brewery wastewater with C. butyricum, and a great improvement in H production in semi-continuous fermentation.
在“二氧化碳排放峰值与碳中和”的背景下，氢能作为绿色清洁能源，将为碳排放减少和碳中和做出重要贡献。利用有机废水生产生物氢不仅实现了污染物去除，还实现了氢能回收和碳排放减少。在本研究中，对丁酸梭菌NH-02这一偏好麦芽糖的菌株进行了研究，考察其在分批发酵和半连续发酵中利用啤酒废水生产生物氢的潜力和性能。合适的初始pH值7.0和21,173 mg/L化学需氧量（COD）（2670 mg/L还原糖（RS））的有机负荷刺激了分批产氢效率，最大产氢量为1.89 mol-H/mol-RS，累积产氢量为479.3 mL/L。与分批发酵相比，半连续发酵的产氢率和产氢量有显著提高。在120小时发酵后，最佳水力停留时间（HRT）为47小时时，最大累积产氢量为5.21 mol-H/mol-RS，产氢量为254.78 mL。本研究证明了丁酸梭菌利用啤酒废水产氢的潜力，以及半连续发酵中产氢的显著改善。
