Ultrafast adsorption of heavy metal ions onto functionalized lignin-based hybrid magnetic nanoparticles
Ultrafast adsorption of heavy metal ions onto functionalized lignin-based hybrid magnetic nanoparticles
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DOI：
10.1016/j.cej.2019.04.111
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发表时间：
2019-09
影响因子：
15.1
通讯作者：
Yongchao Zhang;Shuzhen Ni;Xiaoju Wang;Weihua Zhang;L. Lagerquist;M. Qin;S. Willför;Chunlin Xu
中科院分区：
文献类型：
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作者：
Yongchao Zhang;Shuzhen Ni;Xiaoju Wang;Weihua Zhang;L. Lagerquist;M. Qin;S. Willför;Chunlin Xu
微囊藻属，是革兰氏阴性、产氧、光合作用的原核生物2，它们利用太阳能将二氧化碳（CO2）和矿物质转化为有机化合物和生物质。富营养化、二氧化碳浓度上升和全球变暖正在增加全球微囊藻的水华。由于其高可用性和蛋白质含量，微囊藻生物质已被建议作为动物饲料的蛋白质来源。这将减少对大豆和其他农作物的依赖7，并可在收获微囊藻浮渣和水华时利用“废弃”生物量8。除了蛋白质，微囊藻还含有其他营养物质，包括脂质、碳水化合物、维生素和矿物质。然而，微囊藻产生蓝藻10种毒素，包括微囊藻毒素（MCs）和其他生物活性代谢产物，对健康造成11种危害。在这篇综述中，确定了在饲料中使用微囊藻水华的挑战。首先，回顾了微囊藻对软体动物、甲壳类动物、鱼类、两栖类动物、哺乳动物和鸟类的营养和毒理学数据。在饲料中加入微囊藻会导致几种鱼类的死亡率增加，生长速度减慢，15恶病质，组织病理学变化和肝、肾、鳃、肠16和脾的氧化应激。喂食微囊藻的17条鱼肌肉中MC的估计每日摄入量（EDI）可能超过世界卫生组织（WHO）确定的18个人的暂定每日耐受摄入量（TDI），即0.04微克/千克体重（bm）/天，因此不安全。鱼的肌肉投喂M。铜绿假单胞菌的营养价值低，并且表现出差的适口性/味道。微囊藻还对软体动物、甲壳类动物、两栖动物、哺乳动物和鸟类造成肝毒性、生殖毒性、心脏毒性、神经毒性和免疫毒性。微生物病原体也可以出现在微囊藻的水华中。因此，应充分去除/降解/灭活微囊藻生物质中的蓝藻毒素/异生物质/病原体，以确保生物质用作动物饲料中的主要/主要/补充成分的安全性。作为一种改善措施，解毒剂/解毒剂可用于避免/减少27毒性作用。在饲料成分/补充剂中使用微囊藻之前，需要进行进一步的健康保护和成本控制筛查。29
Microcystis spp., are Gram-negative, oxygenic, photosynthetic prokaryotes 2 which use solar energy to convert carbon dioxide (CO2) and minerals into organic 3 compounds and biomass. Eutrophication, rising CO2 concentrations and global 4 warming are increasing Microcystis blooms globally. Due to its high availability and 5 protein content, Microcystis biomass has been suggested as a protein source for 6 animal feeds. This would reduce dependency on soybean and other agricultural crops 7 and could make use of “waste” biomass when Microcystis scums and blooms are 8 harvested. Besides proteins, Microcystis contain further nutrients including lipids, 9 carbohydrates, vitamins and minerals. However, Microcystis produce cyanobacterial 10 toxins, including microcystins (MCs) and other bioactive metabolites, which present 11 health hazards. In this review, challenges of using Microcystis blooms in feeds are 12 identified. First, nutritional and toxicological (nutri-toxicogical) data, including 13 toxicity of Microcystis to molluscs, crustaceans, fish, amphibians, mammals and birds, 14 is reviewed. Inclusion of Microcystis in diets caused greater mortality, lesser growth, 15 cachexia, histopathological changes and oxidative stress in liver, kidney, gill, intestine 16 and spleen of several fish species. Estimated daily intake (EDI) of MCs in muscle of 17 fish fed Microcystis might exceed the provisional tolerable daily intake (TDI) for 18 humans, 0.04 µg/kg body mass (bm)/day, as established by the World Health 19 Organization (WHO), and is thus not safe. Muscle of fish fed M. aeruginosa is of low 20 nutritional value and exhibits poor palatability/taste. Microcystis also causes 21 hepatotoxicity, reproductive toxicity, cardiotoxicity, neurotoxicity and immunotoxicity 22 to mollusks, crustaceans, amphibians, mammals and birds. Microbial pathogens can 23 also occur in blooms of Microcystis. Thus, cyanotoxins/xenobiotics/pathogens in 24 Microcystis biomass should be removed/degraded/inactivated sufficiently to assure 25 safety for use of the biomass as a primary/main/supplemental ingredient in animal 26 feed. As an ameliorative measure, antidotes/detoxicants can be used to avoid/reduce 27 the toxic effects. Before using Microcystis in feed ingredient/supplements, further 28 screening for health protection and cost control is required. 29