pH and organic leaching effect of the algal Sargassum filipendula in aqueous solutions

机译：藻类恒河藻在水溶液中的pH和有机浸出作用

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The biosorption in marine algae has been associated to its cell wall biochemical properties. The pH and the organic leaching effect in different pH for the native and pre-treated (24,48 and 72 hours) biomass of Sargassum filipendula were investigated. In different pH it was observed that smaller the pH, larger the leaching degree presented by the native and pre-treated biomass. The chemical and thermal treatment of the biomass contributed for the decrease of the leaching. The times of chemical treatment for the biomass showed similar values of the leaching. The ability of the pre-treated biomass to sequester the heavy-metal ions chromium(Ⅲ) and/or nickel(Ⅱ) from different solutions were compared. The competition effect between ions was studied in relation to the removal capacity, presenting the biosorbent higher affinity for chromium in solution. The pre-treated seaweed showed to be an efficient and low cost alternative to be considered in the acid-wastewaters-treatment.

机译：海藻中的生物吸附与其细胞壁的生化特性有关。研究了马齿藻天然和预处理（24,48和72小时）的生物量的pH值和不同pH下的有机浸出效果。在不同的pH下，观察到pH越小，天然和预处理的生物质所呈现的浸出度越大。生物质的化学和热处理有助于减少浸出。生物质的化学处理时间显示出相似的浸出值。比较了预处理后的生物质从不同溶液中螯合重金属离子铬（Ⅲ）和/或镍（Ⅱ）的能力。研究了离子之间的竞争效应与去除能力的关系，从而表明生物吸附剂对溶液中的铬具有更高的亲和力。经预处理的海藻显示出是一种高效且低成本的替代品，可在酸废水处理中加以考虑。

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《European Symposium on Environmental Biotechnology(ESEB 2004); 20040425-20040428; Oostende; BE》|2004年|P.483-486|共4页
会议地点 Oostende(BE);Oostende(BE)
作者
M.T. Veit; C.R.G. Tavares; R.M.M. Falleiro; E.A. Silva;
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Universidade Estadual de Maringa, Departamento de Engenharia Quimica -DEQ, Av. Colombo, Campus Universitario, Maringa-Parana, Brasil;

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中图分类环境生物学;
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4. pH and organic leaching effect of the algal Sargassum filipendula in aqueous solutions [C] . M.T. Veit, C.R.G. Tavares, R.M.M. Falleiro, European symposium on environmental biotechnology . 2004

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7. Remoção de níquel(II) de soluções aquosas pela biomassa Sargassum filipendula em múltiplos ciclos de sorção-dessorção - DOI: 10.4025/actascitechnol.v31i1.840 Removal of nickel (II) from aqueous solutions by Sargassum filipendula biomass in multiple cycles of sorption-desorption - DOI: 10.4025/actascitechnol.v31i1.840 [O] . Eneida Sala Cossich, Célia Regina Tavares, Maurício Melo Câmara, 2009

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pH and organic leaching effect of the algal Sargassum filipendula in aqueous solutions

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