Talaş Magnezyum Atığından Hidrojen Gazı Üretimi ve Hız Profillerinin İncelenmesi

Year 2018, , 681 - 684, 01.09.2018

Çisem Öz Bilge Coşkuner Filiz Aysel Kantürk Figen

https://doi.org/10.2339/politeknik.403972

Cited By: 1

Abstract

Son yıllarda, yüksek potansiyele
sahip olan enerji taşıyıcısı hidrojenin (H₂) yakıt olarak kullanımı
ve mevcut sistemler ile değiştirilmesine yönelik araştırmalar hız kazanmıştır.
H₂’nin sıfır emisyonlu üretimi, güvenli depolanması, etkin dağıtımı
ve son kullanımda yüksek verimle enerjiye dönüştürülmesi, günlük hayatta
kullanımının yaygınlaştırılması için önem arz etmektedir. Hidrojenin
üretiminde, fosil temelli kaynaklar yerine sıfır emisyonlu alternatif tekniklerin
geliştirilmesi hedeflenmektedir. Özellikle düşük ağırlıklı metaller içerisinden
magnezyum (Mg)’un H₂ üretiminde, bu hedefe ulaşmak amacıyla
kullanılabilecek hammaddeler arasında yer almaktadır.  Mg ve Mg alaşımları başta otomotiv, uzay
mühendisliği, metalürji ve kimya sektörleri olmak üzere pillerde ve katodik
koruma gibi alanlarda kullanılırken, %50’lik kısmı atık olarak oluşmaktadır.
Ancak, bu atıkların sadece %33’lük kısmı atık yönetimi kapsamında
sınıflandırılarak tekrar kullanımı mümkün olmaktadır.

Bu araştırma makalesinde,
endüstriyel atık sınıfında yer alan talaş Mg’un H₂ gazı üretiminde
değerlendirilmesi amaçlanmıştır. Hidroliz reaksiyonu ile gerçekleşen H₂
üretiminde, ortamda H⁺ iyonlarının geçişini hızlandıracak aktivatörün
kullanımı gerekli olup ve klorür tuzları, 
metaller ve asitler bu amaç doğrultusunda tercih edilmektedirler. Farklı
konsantrasyonlardaki sirke çözeltilerinin (% 0.8-4 ağ. asetik asit, CH₃COOH)
hidroliz ortamında aktivatör olarak kullanımı incelenmiştir. Atık Mg talaşından
hidrojen üretimi gerçekleştirilmiş ve H₂ gazı üretim profilleri aydınlatılmıştır.

Keywords

H2 üretimi, atık magnezyum, hidroliz, sirke

Hydrogen Gas Production from Chip Magnesium Waste and Investigation of Rate Profiles

Abstract

In recent years, researches about the use of hydrogen
(H₂) as a high-potential energy carrier and replacement with current
systems have been enhanced. Production of H₂ with zero emission,
safe storage, efficient distribution and, highly efficient energy conversion in
end-use are the most important factors for popularizing the use of hydrogen
energy systems in daily life. The main target is to develop alternative
techniques to produced hydrogen with zero emission instead of fossil-based
sources. In particular, magnesium (Mg) from light weight metals has been gain
attention to achieve this target.  While,
Mg and Mg alloys are mainly used as a raw material in automotive, space
engineering, metallurgy and chemistry sectors, cells and cathodic protection,
%50 of raw Mg is formed as a waste. However, only 33% of these wastes are classified
based on waste managent and reused is being possible.

In this research article, the evaluation of the
industrial waste grade Mg chips in the production of H₂ gas is studied.
H₂ production is carried out based on the hydrolysis reaction and it
is necessary to use an activator which accelerates the passage of H⁺
ions and chlorine salts, metals and acids are preferred for this purpose. The
usage of different concentrations of vinegar solutions (0.8-4 % wt. acetic
acid, CH₃COOH) as an activator in hydrolyses meduim was
investigated. Hydrogen prodcution was carried our from waste Mg chip and H₂
gas production profiles were illuminated.

Keywords

H2 production, waste magnesium, hydrolysis, vinegar

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