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Adsorption properties of ınorgano-organo bentonites

Authors: Koçak, Burcu;

Adsorption properties of ınorgano-organo bentonites

Abstract

In this work, the adsorption properties of modified clays, inorgano (Al-pillared), organo, inorgano-organo, were investigated using distilled glycerine. The study mainly consists of two parts: first, preparation of modified bentonites and second, bleaching of distilled glycerine by modified bentonites.In the first part, Al-pillared, organo-, and inorgano-organo bentonites were prepared by microwave irradiation method. During the synthesis of Al-pillared clay, amount of aluminium used in the preparation was taken 0.1, 0.15 and 0.20 M Organo clays were synthesized by using Hexadecyltrimethylammonium Bromide (HDTMAB). The amount of HDTMAB used was in amount equivalent to 100% of the cation exchange capacity (CEC) of clay. Organo clays were dried under three different drying conditions; oven, microwave, and freeze drying and so it was observed the effect of drying conditions on the structure and adsorption behaviour of the adsorbents. Inorgano-organo bentonites were modified with polyhydroxialuminum and alkylammonium cations. During the synthesis of inorgano-organo clay, 0.1M [Al+3] initial concentration and HDTMA in amount such that the ratio of HDTMA to clay to be 4.0 mmoles/gram.In the second part, the adsorbents prepared were used to investigate the effect of temperature, time of contact, and adsorbent amount.

Bu tezde Inorgano (al-pillared), organo ve inorgano-organo bentonitin adsorpsiyon özellikleri incelenmiştir. Çalışma başlıca iki bölümden oluşmaktadır: birinci bölüm modifiye bentonitlerin hazırlanması ve ikinci bölüm ise hazırlanan bentonitlerin gliserinin renginin ağartılmasında kullanılmasıdır.Deneysel çalışmaların ilk bölümünde Al-pillared-, organo-, ve inorgano organo bentonitler mikrodalga yöntemiyle hazırlanmıştır. Al-pillared bentonitler, başlangıc [Al+3] derişimi 0.1, 0.15, ve 0.2 M olacak şekilde hazırlanmıştır. Organo bentonitlerin hazırlanışında, kilin katyon değişim kapasitesinin (CEC) % 100'üne eşdeğer miktarlarda Hexadecyltrimethylammonium bromide (HDTMAB) kullanılmıştır. Numuneler kurutucu, dondurarak kurutma ve mikrodalga yöntemleri ile kurutularak, kurutma şeklinin kilin yapısına ve ağartma kapasitesine olan etkisi incelenmiştir. Inorgano-organo bentonitler [Al+13] ve HDTMAB kullanılarak modifiye edilmiştir. Numune hazırlama sırasında başlangıç [Al+3] derişimi 0,1 M ve yüzek aktif maddenin miktarı 4 mmol/ kil olarak alınmıştırİkinci bölümde, hazırlanmış olan Al-pillared, organo ve inorgano-organo bentonitlerinin ağartma etkinliğine zaman, sıcaklık ve adsorbent miktarı gibi parametrelerin etkisi incelenmiştir.

111

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Turkey
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Keywords

Bentonite, organo bentonite, Al-pillared bentonite, inorganoorgano bentonite, inorgano-organo bentonite, biodiesel, glycerine, bleaching., Kimya Mühendisliği A.B.D., Chemical Engineering, Organo bentonit, Al-destekli bentonit, inorganoorgano bentonit, biyodizel, gliserin, ağartma., Kimya Mühendisliği

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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