Massa Marina, Buono Silvia, Langellotti Antonio Luca, Castaldo Luigi, Martello Anna, Paduano Antonello, Sacchi Raffaele, Fogliano Vincenzo
CAISAL, University of Naples Federico II, Parco Gussone Ed 77, 80055 Portici, NA, Italy.
CAISAL, University of Naples Federico II, Parco Gussone Ed 77, 80055 Portici, NA, Italy.
N Biotechnol. 2017 May 25;36:8-16. doi: 10.1016/j.nbt.2016.12.007. Epub 2016 Dec 30.
In this paper, two freshwater microalgae (Tetradesmus obliquus and Botryococcus braunii), a marine diatom (Phaeodactylum tricornutum) and a photosynthetic cyanobacterium (Arthrospira maxima) were investigated for their ability to grow on liquid digestates (LDs). Three LDs were obtained from anaerobic digestion of different organic wastes: zootechnical (ZW LD), vegetable biomass (VW LD) and the organic fraction of municipal solid wastes (MW LD). All the strains showed the same growth performance on VW LD as on the respective standard media (SM), while ZW LD was efficient only for growth of T. obliquus and B. braunii. MW LD was the poorest growth medium for all the strains. Data on nutrient removal efficiency showed that A. maxima and T. obliquus made the best use of NH-N with removal values ranging between 98.9-99.8%, while P. tricornutum and B. braunii showed values of 79.0 and 88.5% respectively. Applying repeated batch cultivation in photobioreactors, the biochemical composition of A. maxima and T. obliquus biomass grown on ZW LD and VW LD, showed an increase of lipid, carbohydrates and ash in both microalgae. Biomass biochemical profiles suggest possible applications in feed, chemicals and energy sectors.
在本文中，研究了两种淡水微藻（斜生栅藻和布朗葡萄藻）、一种海洋硅藻（三角褐指藻）和一种光合蓝细菌（极大螺旋藻）在液体消化液（LDs）上的生长能力。三种LDs分别来自不同有机废物的厌氧消化：畜牧废物（ZW LD）、蔬菜生物质（VW LD）和城市固体废物的有机部分（MW LD）。所有菌株在VW LD上的生长性能与在各自的标准培养基（SM）上相同，而ZW LD仅对斜生栅藻和布朗葡萄藻的生长有效。MW LD是所有菌株生长最差的培养基。营养物去除效率数据表明，极大螺旋藻和斜生栅藻对NH-N的利用效果最佳，去除率在98.9 - 99.8%之间，而三角褐指藻和布朗葡萄藻的去除率分别为79.0%和88.5%。在光生物反应器中进行重复批次培养，在ZW LD和VW LD上生长的极大螺旋藻和斜生栅藻生物质的生化组成显示，两种微藻中的脂质、碳水化合物和灰分均有所增加。生物质生化概况表明其在饲料、化工和能源领域可能具有应用价值。
