RE-UTILIZATION OF INORGANIC SOLID WASTE (LIME MUD) AS FOREST ROAD STABILIZER FROM THE CHEMICAL RECOVERY PROCESS IN KRAFT PULP MILL

Authors : Habip Eroğlu, Sami İmamoğlu, H. Hulusi Acar

Pages : 146-154

View : 356 | Download : 2979

Publication Date : 2011-03-20

Article Type : Other Papers

Abstract :Waste handling is a concern in all pulp and paper  mills. Best available techniques for reducing waste is to minimize the generation of solid waste and/or reuse these materials, wherever practicable. One of the most important solid wastes is lime mud which is generated from the kraft pulping in its chemical recovery process. This paper explores the composition of lime mud resulting from the chemical recovery unite of kraft pulp mill and investigation of  this waste for re-using beneficially on sub grade and pavement of forest road as a  alternative disposal  method. Lime mud obtained from the re-causticising process in SEKA pulp mill that utilizes wheat straw and reed as the principal raw material was supplied with % 47 water content and its chemical and physical characterisations was performed according to standard methods. Dried waste to environmental condition was mixed with certain amount to composite cement for using on pavement and sandy clay, loamy clay and clay soils for enriching forest road sub grade properties. In order to investigate the lime mud addition on pavement and sub grade properties necessary physical tests were performed. As a consequence this study reveals that while waste of lime mud causes environmental and economical problem with conventional disposal techniques and/or abandoning to environment, this waste can be used as good stabilisation materials on forest road sub-grade and pavement without any environmental problem.
Keywords : Kağıt endüstrisi, katı atık, geri kazanım, kireç çamuru, katkılı çimento, kaplama tabakası, taban zemini, orman yolları stabilizasyonu

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