The use of Moringa oleifera (MO) seeds has been the subject of studies to treat water and effluents due to its biocoagulant potential. However, one of the factors that prevent its use at an industrial level is its short shelf life after preparation. In view of this problem, the present study aimed to produce an MO biocoagulant for pre‐treatment via the lyophilization method, to prolong the shelf life of the extract. After optimizing the evaluated preparation conditions (2.38 g of MO for 100 ml of distilled water in 4 min of ultrasound extraction) in synthetic wastewater (using the commercial blue 5G dye), the biocoagulant was produced. Using different salt concentrations (NaCl and KCl) with the goal of improving the extraction, the produced biocoagulant was lyophilized, stored and assessed monthly in a comparative study with the inorganic aluminum sulfate coagulant apply to a textile laundry effluent. Although the biocoagulant produced is less efficient than conventional inorganic ones, the performance evaluation proved to be very satisfactory, obtaining 67.13% color removal and 91.98% turbidity for MO, which when compared to aluminum sulfate achieved removal rates of 81.45% and 92%, respectively. Thus, it is presented as a great alternative for pre‐textile wastewater treatment.

中文翻译：

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冻干辣木生物凝结剂的寿命性能评估：延长生物凝结效率的替代方法

辣木的用途（MO）种子由于具有生物凝结潜力而成为处理水和废水的研究对象。但是，阻止其在工业水平上使用的因素之一是其制备后的保质期短。鉴于此问题，本研究旨在通过冷冻干燥法生产用于预处理的MO生物凝结剂，以延长提取物的保质期。优化了合成废水（使用市售5G染料）中评估的制备条件（超声提取4分钟后，对于100 ml蒸馏水为2.38 g MO）后，制备了生物凝结剂。为了改善提取效果，使用了不同的盐浓度（NaCl和KCl），将产生的生物凝结剂冻干，在与无机硫酸铝凝结剂的对比研究中，应每月进行储存和评估，以用于纺织洗衣废水。尽管所生产的生物凝结剂的效率不如传统的无机凝结剂，但性能评估非常令人满意，MO的脱色率为67.13％，浊度为91.98％，与硫酸铝相比，其去除率分别为81.45％和92％。 。因此，它被认为是纺织前废水处理的理想选择。