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Evaluation of Chlorella vulgaris and Scenedesmus obliquus growth on pretreated organic solid waste digestate
Waste Management ( IF 7.1 ) Pub Date : 2020-10-16 , DOI: 10.1016/j.wasman.2020.09.047
P. Scarponi , A.M. Volpi Ghirardini , M. Bravi , C. Cavinato

In this research Scenedesmus obliquus and Chlorella vulgaris growth was tested on digestate sludge obtained from the anaerobic co-digestion treatment of the organic fraction of municipal solid waste (OFMSW) together with waste activated sludge (WAS). Digestate was diluted 1:10 and tested in three batch experimental conditions: with no pre-treatments (noPT), after centrifugation (AC) and after filtration (AUF), in order to evaluate microalgae limiting growth factors. The best growth was obtained by C. vulgaris on digestate AC compared to S. obliquus, reaching 479 ± 31 cell million ml−1 and 131 ± 12 cell million ml−1 respectively. Ammonia removal evaluated in C. vulgaris and S. obliquus cultures was 99.2% ± 0.3 and 98.146% ± 0.008 in AC condition, respectively. Considering that AUF showed similar microalgae growth values, the digestate pretreatment for microalgae growth, could be limited to centrifugation.



中文翻译:

预处理的有机固体消化物中小球藻斜生小球藻生长的评估

在这项研究中,对厌氧共消化处理城市固体废物有机物(OFMSW)和废物活性污泥(WAS)所得的消化污泥,测试了斜生臭小球藻的生长。将Digestate以1:10稀释,并在三批实验条件下进行测试:不进行预处理(noPT),离心(AC)后和过滤(AUF)后,以评估微藻限制生长因子。与斜纹葡萄球菌相比,寻常葡萄球菌在消化的AC上获得最佳生长,分别达到479±31细胞百万毫升-1和131±12细胞百万毫升-1。评估寻常藻中的氨气去除斜生栅藻培养物为99.2%±0.3和98.146%±0.008在AC条件下,分别。考虑到AUF表现出相似的微藻生长值,因此对微藻生长的消化预处理可能仅限于离心。

更新日期:2020-10-17
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