Use of waste pyrite as an alternative to gypsum for alkaline soil amelioration

2015-05-04
TOZSİN, Gülşen
Arol, Ali İhsan
ÇAYCI, GÖKHAN
The reclamation of alkaline soils is of great interest especially in arid and semi-arid climatic regions of the world. The aim of this study was to investigate the application of pyrite from the waste materials of a copper concentration plant as an alternative to gypsum application for alkaline soil amelioration. The second aim was to assess heavy metal contamination. Waste pyrite (FeS2) obtained from a copper concentration plant and pure gypsum (CaSO4 center dot 2H(2)O) were added to soil within the columns and pots. Column-leaching tests were performed to determine the effectiveness of waste pyrite application on alkaline soil characteristics as compared with gypsum application. Greenhouse pot experiments were also conducted for evaluating the effects of these soil additives on plant growth. The results indicated that the pH and exchangeable sodium percentage of the experimental soil significantly decreased (p < 0.01) upon waste pyrite and gypsum applications. While waste pyrite was very effective in increasing the levels of essential plant micro-nutrients and dry matter weight of wheat, it did not cause pollution or toxicological problems in the soil. The results of this study clearly indicated that waste pyrite is a good ameliorating agent and an alternative to gypsum in reclamation of alkaline soils.
INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT

Suggestions

Modeling of mogan and eymir lakes aquifer system
Yağbasan, Özlem; Yazıcıgil, Hasan; Department of Geological Engineering (2007)
Mogan and Eymir Lakes, located 20 km south of Ankara, are important aesthetic, recreational, and ecological resources. Dikilitaş and İkizce reservoirs, constructed on upstream surface waters, are two man-made structures in the basin encompassing an area of 985 km2. The purpose of this study is (1) to quantify groundwater components in lakes’ budgets, (2) to assess the potential impacts of upstream reservoirs on lake levels, and (3) to determine effects of potential climatic change on lakes and groundwater l...
Optimal storage of freshwater in saline aquifers
Küstü, M. Deniz; Yazıcıgil, Hasan; Department of Geological Engineering (2005)
Storage of freshwater in saline aquifers has a strategic importance in water deficit countries. The freshwater stored in these aquifers may be the only source of water available during times of crisis. Coupled simulation and optimization type groundwater management models have been developed that will achieve the optimal control of the storage of freshwater in a stagnant manner for constant density and variable density flows in hypothetical single- and multi-layered saline aquifers. The study is carried out...
Numerical modeling of seawater groundwater relationships in the Selçuk sub basın, İzmir Turkey
Hassan, Abubakr; Çamur, Mehmet Zeki; Department of Geological Engineering (2004)
Seawater-fresh groundwater natural equilibrium conditions in the aquifers of the Selçuk sub-basin may be disturbed by the discharge occurred during the past 30 years in order to supply water for irrigation and domestic purpose usage. Two dimensional density dependent cross sectional saturated flow and solute transport simulations were carried out to determine whether seawater intrusion has occurred in the Selçuk sub-basin due to the imposed discharge or the determined salt-water in the western section of th...
Evaluation of site conditions for the Ankara Basin of Turkey based on seismic site characterization of near-surface geologic materials
Kockar, M. K.; Akgün, Haluk; Rathje, E. M. (Elsevier BV, 2010-01-01)
Regional site conditions relevant for seismic hazard studies can be derived from various geologic, seismologic, and geotechnical sources. In this study, site conditions are derived for the Ankara Basin in Turkey by merging in-situ seismic measurements of dynamic properties, geologic information, and some geotechnical boring information. Field seismic refraction surveys were performed at 259 sites in the project area to classify and characterize Plio-Pleistocene fluvial deposits and Quaternary alluvial and t...
SWELL BEHAVIOR OF ARID CLIMATE SHALES FROM SAUDI-ARABIA
EROL, AO; DHOWIAN, A (Geological Society of London, 1990-01-01)
Arid and hot climatic conditions influence the development of surficial (superficial) sediments by aggravating the desiccation and weathering processes. Such environmental factors promote the occurrence of expansive soils in the Middle East. This study deals with the nature and extent of expansive soil problems in major development areas of Saudi Arabia where severe damage has been experienced in numerous projects. The expansive soils primarily consist of shales of Tertiary age which occur in a narrow strip...
Citation Formats
G. TOZSİN, A. İ. Arol, and G. ÇAYCI, “Use of waste pyrite as an alternative to gypsum for alkaline soil amelioration,” INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT, pp. 169–177, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41231.