Hastane atıksularında formaldehit giderimi
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Dosyalar
Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
İnönü Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Yüksek Lisans Tezi HASTANE ATIKSULARINDA FORMALDEHİT GİDERİMİ Emre YİĞİT İnönü Üniversitesi Fen Bilimleri Enstitüsü Kimya Mühendisliği Anabilim Dalı 68 + ix sayfa 2019 Danışman: Prof. Dr. Ahmet BAYSAR Bu tez çalışmasının amacı hastane atık suyunda bulunan formaldehitin zararsız hale getirilerek bertaraf edilmesidir. Tıbbi laboratuvarlarda yaygın olarak kullanılan formaldehit derişimi yaklaşık 40 g/L'dir. Bu miktar, biyolojik bozunma seviyesinden (225 mg/L) çok daha yüksektir. Formaldehit canlı organizmalar üzerinde kanserojen ve mutajenik etki gösterdiğinden çevreye boşaltılmadan önce zararsız hale dönüştürülmesi gerekmektedir. Formaldehitin sodyum metabisülfit/sodyum sülfit ile reaksiyonu (giderim) sonucu biyobozunur sodyum formaldehit bisülfit oluşur. Reaksiyon çözeltisi asidiktir çözeltinin pH'ı fosfat tamponları (NaH2PO4/Na2HPO4) gibi tampon çözeltileri ile ayarlanabilir. Bu tamponun çözeltiye eklenmesi ile pH değeri 7-7.5 arasında tutulabilir. Formaldehit giderim reaksiyonu hızlı olup, 20 dakikada formaldehitin yaklaşık %70'inin ve 30 dakikada ise tamamının reaksiyona girdiği ve ortamda ppb seviyesinde formaldehit kaldığı görülmüştür. ANAHTAR KELİMELER: Formaldehit, formalin, hastane atıksuyu, detoksifikasyon
M. Sc. Thesis DETOXIFICATION OF FORMALDEHYDE FROM HOSPITAL WASTEWATERS Emre YİĞİT İnönü University Graduate School of Natural and Applied Sciences Department of Chemical Engineering 68 + ix pages 2019 Supervisor: Prof. Dr. Ahmet BAYSAR The purpose of this work is to eliminate formaldehyde from hospital wastewaters by converting it to nontoxic substances. The concentration of formaldehyde used in medical laboratories may be as high as 40 g/L. This is much higher form biodegradable level of 225 mg/L. Since formaldehyde has carcinogenic and mutagenic effect on living organisms, it should be converted to innoxious material before it is discharged to the environment. The reaction of sodium metabisulfite with formaldehyde gives sodium metabisulfite formaldehyde which is a material that is biodegradable. The reacting solution is acidic. The pH of the solution may be adjusted by buffered solutions such as phosphate (NaH2PO4/Na2HPO4) solutions. By adding this buffer to the reacting solution the pH may be kept between 7.0-7.5. Formaldehyde elimination reaction is fast and 70% of formaldehyde may react in 20 minutes and in 30 minutes the reaction is completed and the remaining formaldehyde is in ppb levels. KEYWORDS: Formaldehyde, formalin, hospital wastewater, detoxification
M. Sc. Thesis DETOXIFICATION OF FORMALDEHYDE FROM HOSPITAL WASTEWATERS Emre YİĞİT İnönü University Graduate School of Natural and Applied Sciences Department of Chemical Engineering 68 + ix pages 2019 Supervisor: Prof. Dr. Ahmet BAYSAR The purpose of this work is to eliminate formaldehyde from hospital wastewaters by converting it to nontoxic substances. The concentration of formaldehyde used in medical laboratories may be as high as 40 g/L. This is much higher form biodegradable level of 225 mg/L. Since formaldehyde has carcinogenic and mutagenic effect on living organisms, it should be converted to innoxious material before it is discharged to the environment. The reaction of sodium metabisulfite with formaldehyde gives sodium metabisulfite formaldehyde which is a material that is biodegradable. The reacting solution is acidic. The pH of the solution may be adjusted by buffered solutions such as phosphate (NaH2PO4/Na2HPO4) solutions. By adding this buffer to the reacting solution the pH may be kept between 7.0-7.5. Formaldehyde elimination reaction is fast and 70% of formaldehyde may react in 20 minutes and in 30 minutes the reaction is completed and the remaining formaldehyde is in ppb levels. KEYWORDS: Formaldehyde, formalin, hospital wastewater, detoxification
Açıklama
Anahtar Kelimeler
Kimya Mühendisliği, Chemical Engineering
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Künye
Yiğit, E. (2019). Hastane atıksularında formaldehit giderimi. Yüksek Lisans Tezi, İnönü Üniversitesi.
