Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Application of pervious alkali-activated slag concrete to adsorb runoff contaminants
https://orcid.org/0000-0003-0881-9849
https://orcid.org/0000-0003-0657-7874
Graphical abstract Display Omitted
Highlights Walnut shell carbon and zeolite was added to previous alkali-activated slag (PAAS). Runoff containing lead (Pb), copper (Cu), and cadmium (Cd) passed through PAAS. Absorption of contaminants is enhanced by 20% zeolite and 15% activated carbon. Cd selectivity was higher than other contaminants in the optimal sample. XRD and SEM showed activated carbon in the structure of PAAS.
Abstract The application of pervious concrete as a runoff contaminant adsorber could be considered as a bright idea for sustainable development in the civil and construction industry. This study investigated the application of pervious alkali-activated slag (PAAS) concrete as a runoff containment adsorber. A combination of activated carbon (AC) derived from the walnut shells, and mineral zeolite as contaminant adsorbers with different dosages were added to fourteen PAAS concrete mixtures. Runoff containing contaminants, including lead (Pb), copper (Cu), and cadmium (Cd), passed through PAAS concrete specimens to measure the contaminant adsorption rate in different mixtures. The mixture containing hybrid adsorbers yielded excellent adsorption rates of 65.84%, 98.66%, and 99.16% for Pb, Cu, and Cd, respectively. Contaminant adsorption capacity was maximized in a hybrid mix containing 15% AC and 20% Z. The compressive strength was also maximum in samples containing 20% zeolite with a slag content of 500 kg/m3.
Application of pervious alkali-activated slag concrete to adsorb runoff contaminants
https://orcid.org/0000-0003-0881-9849
https://orcid.org/0000-0003-0657-7874
Graphical abstract Display Omitted
Highlights Walnut shell carbon and zeolite was added to previous alkali-activated slag (PAAS). Runoff containing lead (Pb), copper (Cu), and cadmium (Cd) passed through PAAS. Absorption of contaminants is enhanced by 20% zeolite and 15% activated carbon. Cd selectivity was higher than other contaminants in the optimal sample. XRD and SEM showed activated carbon in the structure of PAAS.
Abstract The application of pervious concrete as a runoff contaminant adsorber could be considered as a bright idea for sustainable development in the civil and construction industry. This study investigated the application of pervious alkali-activated slag (PAAS) concrete as a runoff containment adsorber. A combination of activated carbon (AC) derived from the walnut shells, and mineral zeolite as contaminant adsorbers with different dosages were added to fourteen PAAS concrete mixtures. Runoff containing contaminants, including lead (Pb), copper (Cu), and cadmium (Cd), passed through PAAS concrete specimens to measure the contaminant adsorption rate in different mixtures. The mixture containing hybrid adsorbers yielded excellent adsorption rates of 65.84%, 98.66%, and 99.16% for Pb, Cu, and Cd, respectively. Contaminant adsorption capacity was maximized in a hybrid mix containing 15% AC and 20% Z. The compressive strength was also maximum in samples containing 20% zeolite with a slag content of 500 kg/m3.
Application of pervious alkali-activated slag concrete to adsorb runoff contaminants
https://orcid.org/0000-0003-0881-9849
https://orcid.org/0000-0003-0657-7874
Graphical abstract Display Omitted
Highlights Walnut shell carbon and zeolite was added to previous alkali-activated slag (PAAS). Runoff containing lead (Pb), copper (Cu), and cadmium (Cd) passed through PAAS. Absorption of contaminants is enhanced by 20% zeolite and 15% activated carbon. Cd selectivity was higher than other contaminants in the optimal sample. XRD and SEM showed activated carbon in the structure of PAAS.
Abstract The application of pervious concrete as a runoff contaminant adsorber could be considered as a bright idea for sustainable development in the civil and construction industry. This study investigated the application of pervious alkali-activated slag (PAAS) concrete as a runoff containment adsorber. A combination of activated carbon (AC) derived from the walnut shells, and mineral zeolite as contaminant adsorbers with different dosages were added to fourteen PAAS concrete mixtures. Runoff containing contaminants, including lead (Pb), copper (Cu), and cadmium (Cd), passed through PAAS concrete specimens to measure the contaminant adsorption rate in different mixtures. The mixture containing hybrid adsorbers yielded excellent adsorption rates of 65.84%, 98.66%, and 99.16% for Pb, Cu, and Cd, respectively. Contaminant adsorption capacity was maximized in a hybrid mix containing 15% AC and 20% Z. The compressive strength was also maximum in samples containing 20% zeolite with a slag content of 500 kg/m3.
Application of pervious alkali-activated slag concrete to adsorb runoff contaminants
Ahmadi, Zahra (Autor:in) / Behfarnia, Kiachehr (Autor:in) / Faghihian, Hossein (Autor:in) / Soltaninia, Shahrokh (Autor:in) / Behravan, Amir (Autor:in) / Ahmadi, Sara (Autor:in)
08.03.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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