ECONOMIC AND CROSS-MEDIA IMPACT ANALYSIS OF FULLY CLOSED ORGANIC SOLVENT AND AQUEOUS FABRIC WASHING SYSTEMS

Öz

Two methods are generally used in fabric washing processes, namely the aqueous system and the solvent system. In this study, the aqueous and solvent systems used in fabric washing were analyzed using the methodology presented in the Economic and Cross-Media Effects Reference Document. Alternative fabric washing systems were compared in five different environmental themes according to the cross-media methodology and it was found that the aqueous system caused 1.24, 1.22, 1.24, and 1.23 times more environmental impact than the solvent system in terms of human toxicity (HTP), global warming (GWP), acidification (AP), and photochemical ozone creation potentials (POCP) values, respectively. In addition, it was calculated that the solvent system could have almost 100% lower environmental impact in terms of aquatic toxicity potential (ATP) value. The total annual costs of the aqueous and the solvent systems, which were evaluated economically according to the costing methodology, were found to be 0.34 and 0.29 USD/kg product, respectively. The results from the costing methodology showed that the solvent system was 17% more efficient. In the net present value calculation of the solvent system, the reduction ratio was assumed to be 20%. Accordingly, the total net present value of the system was found to be 10,531 USD and the internal rate of return on the investment was found as 26%.

Anahtar Kelimeler

• Aqueous System
• Cross Media Effect Analysis
• Economics Analysis
• Solvent System
• Textile.

TAM KAPALI ORGANİK ÇÖZGENLİ VE SULU KUMAŞ YIKAMA SİSTEMLERİNİN EKONOMİK VE ÇAPRAZ MEDYA ETKİ ANALİZİ

Öz

Kumaş yıkama proseslerinde genellikle sulu sistem ve çözgen sistem olmak üzere iki yöntem kullanılmaktadır. Bu çalışmada kumaş yıkama proseslerinde kullanılan sulu ve çözgen sistemler Ekonomik ve Çapraz Medya Etkiler Referans Dokümanında sunulan metodolojiden faydalanılarak analiz edilmiştir. Kumaş yıkama sistemleri çapraz medya metodolojisine göre beş farklı çevresel temada karşılaştırılmıştır. Sulu sistemin çözgen sisteme göre beşeri toksisite potansiyeli (BTP), küresel ısınma potansiyeli (KIP), asidifikasyon potansiyeli (AP) ve fotokimyasal ozon oluşturma potansiyeli (FOOP) değerlerinde sırasıyla 1,24, 1,22, 1,24 ve 1,23 kat daha fazla çevresel etkiye neden olduğu görülmüştür. Akuatik toksisite potansiyeli (ATP) açısından çözgen sistemin %100 daha düşük çevresel etkiye sahip olabileceği hesaplanmıştır. Maliyetleme metodolojisine göre ekonomik açıdan değerlendirilen sulu ve çözgen sistemin toplam yıllık maliyetleri sırasıyla 0,34 ve 0,29 USD/kg ürün olarak bulunmuştur. Maliyetleme metodolojisinden elde edilen sonuçlar çözgen sistemin %17 daha verimli olduğunu göstermiştir. Çözgen sistemin net bugünkü değer hesabında, indirgeme oranının %20 olduğu varsayılmıştır. Buna göre sistemin net bugünkü değeri 10.531 USD, yatırımın iç verim oranı ise %26 olarak bulunmuştur.

Anahtar Kelimeler

• Çözgen Sistem
• Çapraz Medya Etki Analizi
• Ekonomik Analiz
• Sulu Sistem
• Tekstil.

Kaynakça

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