Feasibility of spent metalworking fluids as co-substrate for anaerobic co-digestion.
Feasibility of spent metalworking fluids as co-substrate for anaerobic co-digestion.
复制标题
DOI：
10.1016/j.biortech.2013.12.090
复制
发表时间：
2014-03
影响因子：
11.4
通讯作者：
Ivan Rodriguez-Verde;L. Regueiro;R. Pena;J. A. Álvarez;J. Lema;M. Carballa
中科院分区：
文献类型：
--
作者：
Ivan Rodriguez-Verde;L. Regueiro;R. Pena;J. A. Álvarez;J. Lema;M. Carballa
本文对废金属加工液(SMWF)和猪粪(PM)的厌氧共消化进行了研究。为了找到最高的工艺效率，测试了三个SMWF：PM比率。当SMWF：PM=1：99，w/w1(相当于3.75mLSMWF/L反应器周)时，共消化效果最好，COD的去除效率为74%，说明SMWF对PM的降解没有负面影响。此外，每周两次不同的SMWF脉冲频率(一个反应器接受3.75亿毫升/升的脉冲和3个脉冲的1.25亿毫升/升的反应器)，没有观察到COD去除效率的差异。微生物学分析证实，假单胞菌是厌氧处理SMWF的优势菌种，而Archaea的较高比例表明消化池性能良好。本研究证实了厌氧共消化作为治疗和评估SMWF的一种合适技术的可行性。
In this paper, anaerobic co-digestion of spent metalworking fluids (SMWF) and pig manure (PM) was evaluated. Three SMWF:PM ratios were tested in order to find the highest process efficiency. The best results (COD removal efficiencies of 74%) were achieved co-digesting a mixture with a SMWF:PM ratio of 1:99, w/w1(corresponding to 3.75 mL SMWF/Lreactorweek), which indicates that SMWF did not affect negatively PM degradation. Furthermore, two different weekly SMWF pulse-frequencies were performed (one reactor received 1 pulse of 3.75 mL/Lreactorand the other 3 pulses of 1.25 mL/Lreactor) and no differences in COD removal efficiency were observed. Microbiology analysis confirmed that Pseudomonas was the predominant genus when treating anaerobically SMWF and the presence of a higher fraction ofArchaeawas indicative of good digester performance. This study confirms the feasibility of anaerobic co-digestion as an appropriate technology for treating and valorising SMWF.