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首页> 外文期刊>Clean >Moringa-Seed-Based Coagulant Removes Microcystins Dissolved in Water
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Moringa-Seed-Based Coagulant Removes Microcystins Dissolved in Water

机译：辣木种子的凝结剂除去溶解在水中的微囊藻蛋白

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Toxic cyanobacterial blooms commonly occur in bodies of water used to supply drinking water, leading to the presence of high concentrations of toxins in the water. Among the cyanotoxins, microcystins are the most frequently encountered in aquatic ecosystems. They have been associated with animal and human intoxication, illness, and death. Most of the chemical and physical methods employed by water control managers to control cyanobacteria and cyanotoxins are neither cost effective nor efficient. As an alternative, using natural coagulants that are biodegradable and easily deployed for water purification in small human communities have been proposed. In the present study, 28 assays are carried out using the jar test to investigate the effect of stirring rotation (time and speed), pH, and aqueous extracts of Moringa oleifera L. seeds (AqMO) on the cells, turbidity, and removal of Microcystis aeruginosa cells and extracellular microcystins. Cell removal efficiency ranged from -22.6 +/- 1.3 to 85.8 +/- 0.6%, and the reduction in turbidity ranged from -14.0 +/- 3.1 to 87.4 +/- 0.3% as a function of the different treatments. According to the critical value predicted, an AqMO dose of 540mgL(-1) combined with an initial cell density of 10 +/- 10(5) cells mL(-1) will completely remove M. aeruginosa cells and significantly decrease extracellular microcystins content (ca. 54.4 +/- 7.9%). These results show promise for the development of effective treatments of potable water contaminated with cyanobacteria and microcystins in rural and isolated areas, thereby reducing the public health risks associated with these organisms.
机译：有毒的蓝藻绽放通常发生在用于供应饮用水的水体中，导致水中高浓度的毒素。在氰毒素中，微囊藻是水生生态系统中最常遇到的。它们与动物和人类中毒，疾病和死亡有关。水管管理人员使用的大多数化学和物理方法用于控制蓝藻和氰毒素既不具有成本效益也不高效。作为一种替代方案，已经提出了使用可生物降解的天然凝结剂，并且已经提出了在小型人群社区中易于用于水净化的渗透剂。在本研究中，使用罐试验进行28个测定，以研究搅拌旋转（时间和速度），pH和辣木溶剂的水提取物对细胞，浊度和去除的影响微囊型铜绿假单胞菌和细胞外微囊藻。电池去除效率范围为-22.6 +/- 1.3至85.8 +/- 0.6％，浊度的减少范围为-14.0 +/- 3.1至87.4 +/- 0.3％，作为不同的处理。根据预测的临界值，AQMO剂量为540mg1（-1）与初始细胞密度为10 +/- 10（5）个细胞m1（-1）的初始细胞密度将完全除去M.铜绿假单胞菌细胞，并显着降低细胞外微囊蛋白含量（约54.4 +/- 7.9％）。这些结果表明，在农村和孤立的地区污染的饮用水和微囊藻毒素的有效治疗的发展，从而减少了与这些生物相关的公共卫生风险。

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