This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Çelik, O. Articles by Elbeyli, I[U.]f. Y. Search for Related Content PubMed PubMed Citation Articles by Çelik, O. Articles by Elbeyli, I[U.]f. Y. Social Bookmarking                         What's this?

Preparation of Briquettes from the Golden Horn Bottom Sediments by Hydro-Thermal Agglomeration Process

Department of Civil Engineering, I[UNKNOWN]stanbul University, I[UNKNOWN]stanbul, Turkey

I[UNKNOWN]ffet Yakar Elbeyli

Department of Chemical Engineering, Yildiz Technical University, 34210, I[UNKNOWN]stanbul, Turkey ielbeyli{at}yildiz.edu.tr

The Golden Horn (GH) sediments, which consist mainly of clay, organic substances and heavy metals, are formed with the contribution of industrial and domestic wastes released in the Golden Horn Estuary. On account of their mineralogical and chemical composition, these sediments may be regarded as a suitable raw material for briquette production. In this study, the utilization of GH dredged bottom sediments was investigated for preparation of briquettes. Dried GH sediments were mixed with lime and sand in different percentages, moulded at various squeezing pressures and hardened under several steam pressure values by autoclaving. The briquettes produced through these different process conditions were tested for compressive strength according to the Turkish standards (TS705). It was found that variations in compressive strength were dependent on the amount of lime (Ca(OH)₂) and sand (SiO₂) added. Results show that the compressive strength increased with increasing lime and decreasing sand in the mixtures prepared for briquettes. It is concluded that briquettes with a compressive strength value of 294 kgf cm–² can be produced. This allows the GH sediments to be taken into account as a raw material in brick production, as far as compressive strength requirements are concerned. This possibility may represent an important way either for reducing environmental pollution or for recycling waste materials in industrial applications.

Key Words: Agglomeration • briquettes • hydro-thermal method • sediment reclamation • waste recycling • wmr 682–6

Waste Management & Research, Vol. 22, No. 2, 100-107 (2004)
DOI: 10.1177/0734242X04043931


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?