%0 Thesis
%9 Skripsi
%A WAFIRATUL HUSNA, NIM. 09630006
%B FAKULTAS SAINTEK
%D 2014
%F digilib:11053
%I UIN SUNAN KALIJAGA
%K Key words: salicylic acid, magnetite, Mag-ASUS, gold recovery    
%T SINTESIS MAGNETIT TERLAPISI ASAM SALISILAT  MENGGUNAKAN METODE KOPRESIPITASI DENGAN BANTUAN  GELOMBANG ULTRASONIK (Mag-ASUS) DAN APLIKASINYA UNTUK  RECOVERY EMAS  
%U https://digilib.uin-suka.ac.id/id/eprint/11053/
%X In this research, the magnetite coated salicylic acid was synthesized  through co-precipitation method using ultrasonic wave (Mag-ASUS). This  research was analyzed to gold recovery necessity. The main aim of this research  is to expand the effectiveness of the materials using in adsorption-reduction  [AuCl4]-.  The synthesis was done through co-precipitation method at 60oC using  200 kHz ultrasonic wave, NaOH as precipitating agent, solution Fe3+/Fe2+ with  molar ratio 2:1 and salicylic acid 0.05 M. Mag-ASUS solid synthesized were  characterized using FTIR and XRD. The application of Mag-ASUS to gold  recovery was analyzed by examining the effect of pH, interaction period and  adsorption isotherm.  The research results show that Mag-ASUS not only has good adsorption  capacity, but also has magnetic quality. Hence, the gold recovery was easily done  by external magnetic field. The optimum adsorption of HAuCl4 using 10 mg Mag-  ASUS was achievedat pH 3. The equilibrium was done for 180 minutes. The  adsorption capacity of [AuCl4]- using 2,0x10-4 mol g-1 Mag-ASUS needs 23.6234  kJ mol-1 energy so that it was categorized in chemistry adsorption. This  adsorption was categorized in Langmuir isotherm.  
%Z Pembimbing : Maya Rahmayanti, M.Si