Some new 2-alkyl-5-mercapto-1,3,4-Oxadiazoles and 3-alkyl-5-mercapto-1,2,3-4H triazoles were synthesized from hydrazides of acid oil and oil recovered from spent bleaching earth. These newly synthesized compounds were characterized on the basis of elemental analysis and evaluated for biological properties. Certain derivatives exhibited fairly high antibacterial and antifungal activities when co...

This study was aimed at investigating the physicochemical and microbiological changes that took place during the ageing process of spent bleaching earth in the presence of autochthonous microorganisms. Research material included fresh spent bleaching earth (SBE0) and the same material after 3 years of storage at the constant temperature of 20 °C, without aeration and moistening (SBE3). Changes ...

In this research, the application of walnut shell ash, as an adsorbent for soybean oil bleaching, has been investigated. Therefore, neutralized soybean oil was bleached with 1 and 2% of walnut shell ash as well as commercial bleaching earth. Then, a series of chemical tests such as amounts of carotenoids, chlorophylls, peroxide value, and free fatty acid content of bleached oils and oil retenti...

Telah dilakukan penelitian adsorpsi menggunakan tiga jenis adsorben, yaitu SBE, ZnO, dan SBE/ZnO untuk menghilangkan rhodamine B. Dua parameter digunakan dalam ini adalah kondisi eksperimen gelap terang, serta konsentrasi awal larutan Pengaruh cahaya ambient perlu diteliti mengingat ZnO material fotokatalis. Proses komposit metode aktivasi SBE (maserasi pengasaman), sintesis sol gel. terbukti b...