KU Leuven Kulak, Laboratory Aquatic Biology, Kortrijk, Belgium.
Bioresour Technol. 2012 Nov;124:508-11. doi: 10.1016/j.biortech.2012.08.121. Epub 2012 Sep 7.
Microalgae excrete relatively large amounts of algal organic matter (AOM) that may interfere with flocculation. The influence of AOM on flocculation of Chlorella vulgaris was studied using five different flocculation methods: aluminum sulfate, chitosan, cationic starch, pH-induced flocculation and electro-coagulation-flocculation (ECF). The presence of AOM was found to inhibit flocculation for all flocculation methods resulting in an increase of dosage demand. For pH-induced flocculation, the dosage required to achieve 85% flocculation increased only 2-fold when AOM was present, while for chitosan, this dosage increased 9-fold. For alum, ECF and cationic starch flocculation, the dosage increased 5-6-fold. Interference by AOM is an important parameter to consider in the assessment of flocculation-based harvesting of microalgae.
微藻会排出大量的藻源有机物（AOM），这可能会干扰絮凝作用。本研究使用五种不同的絮凝方法：硫酸铝、壳聚糖、阳离子淀粉、pH 诱导絮凝和电混凝-絮凝（ECF），研究了 AOM 对普通小球藻絮凝的影响。研究发现，所有的絮凝方法中 AOM 的存在都会抑制絮凝，从而导致所需剂量增加。对于 pH 诱导絮凝，当 AOM 存在时，达到 85%絮凝所需的剂量仅增加了 2 倍，而对于壳聚糖，这一剂量增加了 9 倍。对于硫酸铝、ECF 和阳离子淀粉絮凝，剂量增加了 5-6 倍。AOM 的干扰是评估基于絮凝的微藻收获的一个重要参数。
