AN INVESTIGATION OF EVALUATION OPPORTUNITIES OF OLIVE WASTE WATER IN THE TEXTILE INDUSTRY
Project no. 29729 · Status: Kapanmış · 2023
Summary
<p>In this thesis, a study was conducted to evaluate the olive oil production wastewater, which causes serious harm when released to the environment, in natural dyeing of textiles. Cotton and wool fabrics were dyed with olive mill wastewater and optimal conditions were determined. In order to examine the color yield and fastness properties of natural dyeing, dyeing was performed using environmentally friendly approaches such as chitosan, plasma and enzymatic pretreatment in addition to conventional mordanting. The possibilities of reusing the same dye bath were also examined. A life cycle analysis was conducted to evaluate the environmental impact of dyeing with olive mill wastewater and conventional dyeing methods used in the industry. Additionally, cotton and wool fabrics pre-treated with olive oil production wastewater, which contains over 30 phenolic compounds, were dyed and subjected to various chemical, biological, and physical tests. The results demonstated that olive mill wastewater provided excellent outcomes in natural dyeing in terms of dye uptake and fastness properties, and that the same dye bath could be reused for up to five dyeing cycles. It was also found that eco-friendly pre-treatments, such as chitosan and plasma, significantly enhanced the dye uptake of the fabrics. Life cycle analysis revealed that dyeing with olive mill wastewater significantly reduced water usage, fossil fuel consumption, global warming potential, and CO2 emissions compared to conventional dyeing methods. The findings of this thesis indicate that the textile industry could greatly benefit from large-scale applications of this method using olive mill waste water. This approach has the potential to offer dual benefits to both the olive oil and textile industries, contributing substantially to the advancement of both sectors.</p>