Removal of small amounts of cobalt by anion exchanger /

Öztürk, Önder


Removal of hydrogen sulfide by clinoptilolite in a fixed bed adsorber
Yasyerli, S; Ar, I; Dogu, G; Doğu, Timur (2002-11-01)
Due to its toxic and corrosive nature, H2S should be safely removed from the gases produced in gasification or combustion processes. In this study, adsorption of hydrogen sulfide was investigated on a natural zeolite, namely clinoptilolite. H2S adsorption characteristics of Western Anatolian clinoptilolite was studied in a fixed-bed system at different temperatures between 100 and 600 degreesC at atmospheric pressure. H2S adsorption capacity of clinoptilolite was found to be about 0.03 g S/g clinoptilolite ...
Removal of Trace Amounts of Copper from Concentrated Hydrochloric Acid Solutions
Öztürk, Abdullah; Aras, Mustafa Serdal; Karagul, Sedef Cift; Ersoy, Merve Kolay; Öztürk, Abdullah; Karakaya, İshak (ESG, 2018-11-01)
Pickling process is recognized as one of the strongest acid consuming processes in the steel industry. A pickling solution that contains hydrochloric acid (HCl) is used for the metal surface treatment of steel plants. The same acid can be used for a long period of time by means of a regeneration process, in which iron concentration of the acid is decreased to insignificant concentrations. However, regenerated pickling solutions contain copper, especially when scrap is used to produce steel. Furthermore, cop...
Removal of methylene blue by new tunable aryl/alkyl ionic liquids/salts (TAAILs) from aqueous solution
Özdemir, Melek (Informa UK Limited, 2019-10-16)
The removal of methylene blue (MB) from aqueous solution has been investigated using new tunable 1-aryl-2-alkyl-3,5-dimethylpyrazolium hexafluorophosphate salts ([Ph(R)C(R?)pz][PF6], R: -Cl, -Br, -Me, -OMe, R?: -C2H5, or -C4H9) as an extractant and methylene chloride as a diluent. The influence of p-substituent and alkyl chain length on the removal efficiency of MB from aqueous solution was investigated. The obtained results show that MB was extracted from aqueous solution with high extraction efficiency up...
Removal of cobalt from zinc sulfate solution by cementation prior to zinc electrowinning
Kayın, Pınar Burcu; Topkaya, Yavuz Ali; Department of Metallurgical and Materials Engineering (2003)
The aim of this study was to investigate the removal of cobalt from zinc sulfate solution by cementation with the help of conventional and new type of additives that were 4% Sn-zinc alloy powder and 10% Sn-zinc alloy powder, respectively. Synthetic leach solutions containing 150 g/l Zn and 75 mg/l Co were prepared and used in all of the experiments. The parameters researched with the conventional method were the amount of arsenic trioxide and the effect of copper sulfate on cementation of cobalt. While usin...
Removal of Ni(II) Ions From Aqueous Solutions Using Activated-Carbon Prepared From Olive Stone by ZnCl2 Activation
The aim of this study is to remove Ni (II) ions from aqueous solutions by adsorption. Activated-carbon prepared from olive stone (ACOS) was used as adsorbent. Different particle size and concentration of ZnCl2 were studied to optimize adsorbent surface area. Initial concentration, temperature, time, and pH were selected as parameters. According to the experiments results, the equilibrium time, optimum pH, and adsorbent dosage were found 60 min, pH > 6, and 1.0 g/50 mL, respectively. In addition, raw olive s...
Citation Formats
Ö. Öztürk, “Removal of small amounts of cobalt by anion exchanger /,” Middle East Technical University, 1973.