İnşaat Fakültesi

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http://hdl.handle.net/11527/16710

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Yazar "Erşahin, Mustafa Evren" ile İnşaat Fakültesi'a göz atma
  • Öge
    Enhanced energy recovery in municipal wastewater treatment plants through co-digestion by anaerobic membrane bioreactors : current status and future perspectives
    (Springer, 2024) Cengiz, Ali İzzet ; Güven, Hüseyin ; Özgün, Hale ; Erşahin, Mustafa Evren ; 0000-0002-4715-9567 ; 0000-0001-6754-0106 ; 0000-0001-8784-8351 ; 0000-0003-1607-0524 ; Çevre Mühendisliği
    Today, the transition to renewable energy from conventional energy practices is more important than ever to establish energy security and mitigate climate change. The wastewater treatment plants (WWTP) consume a remarkable amount of energy and cause significant greenhouse gas emissions. The energy balance of WWTP can be improved by implementing energy-efficient applications such as anaerobic digestion. However, most of the existing WWTPs utilize only sewage sludge in conventional anaerobic digesters (CAD) which results in low biogas generation. Generally, co-digestion is indicated as an effective solution for the low biogas generation faced in mono-digestion. Moreover, recently, anaerobic membrane bioreactors (AnMBR) have been promoted as a prominent alternative to CADs. This paper overviews the current situation of co-digestion applications by AnMBRs for municipal WWTPs. Furthermore, the environmental and economic aspects of these applications were reviewed. Lastly, challenges and future perspectives related to the co-digestion applications by AnMBR were thoroughly discussed.
  • Öge
    Impact of food waste addition in energy efficient municipal wastewater treatment by aerobic granular sludge process
    (Springer, 2024) Çiçekalan, Büşra ; Berenji, Nastaran Rahimzadeh ; Aras, Muhammed Furkan ; Güven, Hüseyin ; Koyuncu, İsmail ; Erşahin, Mustafa Evren ; Özgün, Hale ; 0000-0002-1806-9917 ; 0000-0001-6431-383X ; 0000-0002-0811-9001 ; 0000-0001-6754-0106 ; 0000-0001-8354-1889 ; 0000-0003-1607-0524 ; 0000-0001-8784-8351 ; Çevre Mühendisliği
    Recently, one of the main purposes of wastewater treatment plants is to achieve a neutral or positive energy balance while meeting the discharge criteria. Aerobic granular sludge (AGS) technology is a promising technology that has low energy and footprint requirements as well as high treatment performance. The effect of co-treatment of municipal wastewater and food waste (FW) on the treatment performance, granule morphology, and settling behavior of the granules was investigated in the study. A biochemical methane potential (BMP) test was also performed to assess the methane potential of mono- and co-digestion of the excess sludge from the AGS process. The addition of FW into wastewater enhanced the nutrient treatment efficiency in the AGS process. BMP of the excess sludge from the AGS process fed with the mixture of wastewater and FW (195 ± 17 mL CH4/g VS) was slightly higher than BMP of excess sludge from the AGS process fed with solely wastewater (173 ± 16 mL CH4/g VS). The highest methane yield was observed for co-digestion of excess sludge from the AGS process and FW, which was 312 ± 8 mL CH4/g VS. Integration of FW as a co-substrate in the AGS process would potentially enhance energy recovery and the quality of effluent in municipal wastewater treatment.
  • Öge
    Marmara Denizi'nde Deniz Salyası Sorunu ile İlgili Görüş ve Öneriler
    (İstanbul Teknik Üniversitesi, 2021-06-18) Öztürk, İzzet ; Yanalak, Mustafa ; Arslan, Özcan ; Koyuncu, İsmail ; Dilekgürgen, Ebru ; Erşahin, Mustafa Evren ; Türken, Türker ; https://orcid.org/0000-0002-8274-5326 ; Çevre Mühendisliği
    Müsilaj doğrudan bir kirlilik olmayıp, birçok farklı alanda zincirleme olarak olumsuzlukların tetiklenmesine neden olmaktadır (Şekil 1 ve Şekil 2). Bu olumsuzluklar arasında deniz canlılarının yok olması, balıkçılığın olumsuz etkilenmesi, deniz ve kıyı turizminin zarar görmesi, gemi ve deniz araçlarının zarar görmesi, atmosfere zararlı gazların salınması sayılabilir. Müsilaj oluştuktan sonra, çeşitli deniz vasıtaları ve sistemleri ile sınırlı şekilde denizden toplanmasından başka çözüm olmadığından, müsilajın oluşumuna neden olan faktörleri yok etmek en uygun çözüm olacaktır.