A preliminary study of simultaneous lime treatment and dry digestion of smooth cordgrass for biogas production
A preliminary study of simultaneous lime treatment and dry digestion of smooth cordgrass for biogas production
复制标题
同步石灰处理和干消化光缆产沼气的初步研究
DOI：
10.1016/j.cej.2011.08.071
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发表时间：
2011
影响因子：
15.1
通讯作者：
Xingzhang Luo
中科院分区：
文献类型：
--
作者：
Yue;Zheng Zheng;Rimao Hua;Xingzhang Luo
讨论了在55±1℃浸出床反应器中对光滑草进行石灰处理和干消化（SLTD）同时处理的技术可行性。SLTD在单反应器中进行，具有较高的初始产气率和挥发性固体（VS）去除率。沼气产量达到283.9 ml /g VS和192.7mL/g VS，异步石灰处理和干消化（ALTD）和SLTD的最大产气量分别为10.0和9.5L/d。ALTD和SLTD对VS的去除率分别达到69.0%和71.9%。在消化30 d时，ALTD和SLTD的总沼气产量分别为83.7%和99%。随着易生物降解物质的减少，产气速率常数逐渐降低。在SLTD实验中，厌氧细菌在干消化过程中受到抑制，表现为20天后总挥发性脂肪酸和沼气产量很少。钠、钾和钙离子对SLTD的抑制作用无关。
The technical feasibility of simultaneous lime treatment and dry digestion (SLTD) of smooth cordgrass in a leaching bed reactor at 55±1°C is discussed. SLTD was carried out in a single reactor with a high initial biogas production rate and volatile solids (VS) removal rate. Biogas yields reached 283.9 and 192.7mL/g VS, with 10.0 and 9.5L/d maximum biogas production rates for asynchronous lime treatment and dry digestion (ALTD), and SLTD, respectively. VS removal efficiency reached 69.0% and 71.9% for ALTD and SLTD, respectively. 83.7% and 99% total biogas yields were obtained at the beginning of 30 days digestion for ALTD and SLTD, respectively. The biogas production rate constant gradually reduced with the reduction of easily biodegradable material. Inhibition of anaerobic bacteria occurred at the SLTD experiment during dry digestion, as shown by very little total volatile fatty acid and biogas production after day 20. Sodium, potassium and calcium ions were not responsible for SLTD inhibition.