English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A adsorção de cobre sobre óxido de alumínio modificado, em meio aquoso, foi avaliada neste trabalho. A modificação do Al 2 O 3 foi realizada através da adsorção de ácido húmico comercial à sua superfície. A adsorção do cobre foi governada por fatores tais como pH, teores de matéria orgânica (particulada e dissolvida) e concentração do material sólido. A adsorção do metal aumentou com o aumento do pH e igualmente com o aumento nos teores de matéria orgânica na fase particulada. O coeficiente de partição (K d ) do cobre diminuiu com o aumento na concentração do material sólido. Os valores de K d foram sempre mais elevados na região de pH neutro e decresceram tanto para regiões mais baixas quanto mais elevadas de pH. Também foi observado um decréscimo na adsorção do cobre quando a concentração de matéria orgânica dissolvida foi aumentada. The sorption of copper ions from aqueous solutions onto modified aluminum oxide was investigated as a function of pH, solids concentration and both particulate and dissolved organic matter. The aluminum oxide studied was modified by adsorption of humic acid. The pH value, organic matter content, and solids concentration dominated copper adsorption onto modified aluminum oxide. The adsorption of copper increased with increasing pH. An increase in particulate organic carbon resulted in an enhanced copper uptake. The partition coefficient (K d ) of copper decreased as the solids concentration increased. Copper partitioning was maximal in the neutral pH range and decreased at either low or high pH values. There was also a decrease in copper adsorption with increasing dissolved organic matter concentration.

Partition of copper between dissolved and particulate phases using aluminum oxide as an aquatic model phase: effects of pH, solids and organic matter