Decolorization of sugar syrups using commercial and sugar beet pulp based activated carbons

Mudoga, H. L.
Yücel, Hayrettin
Kincal, N. S.
Sugar syrup decolorization was studied using two commercial and eight beet pulp based activated carbons. In an attempt to relate decolorizing performances to other characteristics, surface areas, pore volumes, bulk densities and ash contents of the carbons in the powdered form; pH and electrical conductivities of their suspensions and their color adsorption properties from iodine and molasses solution were determined. The color removal capabilities of all carbons were measured at 1/100 (w/w) dosage, and isotherms were determined on better samples. The two commercial activated carbons showed different decolorization efficiencies; which could be related to their physical and chemical properties. The decolorization efficiency of beet pulp carbon prepared at 750 degrees C and activated for 5 h using CO, was much better than the others and close to the better one of the commercial activated carbons used. It is evident that beet pulp is an inexpensive potential precursor for activated carbons for use in sugar refining.


Recovery of acids from anaerobic acidification broth by liquid-liquid extraction
Alkaya, Emrah; Kaptan, Serkan; Ozkan, Leyla; Uludag-Demirer, Sibel; Demirer, Göksel Niyazi (2009-11-01)
In this study, anaerobic acidification of sugar beet processing wastes and subsequent liquid-liquid extraction of produced fermentation metabolites were investigated. The aim of extraction experiments was to asses the influence of pH and extractant (trioctylphosphine oxide (TOPO) in kerosene) concentrations on the recovery of volatile fatty acids (VFAs) from fermentation broth. The effect of TOPO in kerosene concentration was as crucial as the effect of pH on the recovery of VFAs via extraction. Consequentl...
Removal of chloridazon pesticide from waters by Fenton and photo-Fenton processes
Ulu, Hatice Bike; DEĞERMENCİ, NEJDET; Dilek, Filiz Bengü (2020-08-01)
Chloridazon (CLZ), also named as Pyrazon and classified as organochlorine pesticides, is widely used during sugar beets cultivation. CLZ being a pesticide with high solubility in water is likely to end up in surface and groundwater bodies because of its high mobility in soil. Due to its toxic properties, it may cause serious problems in human health and ecological cycle. In the present study, the removal of CLZ pesticide by Fenton and photo-Fenton processes was investigated. The effects of parameters such a...
Production and characterization of activated carbon from horse chestnut kernel
Demirok, Tuğba; Yücel, Hayrettin; Department of Chemical Engineering (2015)
The production of activated carbon from horse chestnut kernel by chemical activation using phosphoric acid and characterization of produced activated carbons are presented in this work. To investigate effect of process parameters on porous structure of activated carbons, chemical activation was performed at the temperature of 300, 400, 500, 600, 700 and 800 ºC for impregnation ratios (weight of activation agent / weight g of sample) of 1:1 and 2:1. Chemical activation experiments were carried out in a quart...
High hydrostatic pressure assisted extraction of pectin from sugar beet pulp
Kaya, Burcu; Okur, İlhami; Alpas, Hami; Oztop, Mecit Halil (2021-05-01)
This study aimed to investigate the effect of high hydrostatic pressure assisted extraction (HHPE) (250, 350 and 450 MPa at 40 degrees C for 5 min with/without acid addition) of pectin from sugar beet pulp and compare its properties with pectin obtained from conventional extraction (CE). Degree of esterification (DE), galacturonic acid (Gal-A) content, Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) relaxometry experiments were performed on the obtained pectin powder. HHP...
Classification and quantification of beet & cane sugar by using optical spectroscopy and chemometrics
Eriklioğlu, Hilmi; Öztop, Halil Mecit; Karaca, Ali Can; Department of Food Engineering (2022-9)
Sucrose is one of the main ingredients used in food industry. It is obtained mainly from two different sources; sugar beet and sugar cane. Due to govermental regulations, cane sugar is not allowed to be produced in Turkey. On the other hand, cane sugar can be illegally sold as beet sugar. Since molecular structure of sucrose is same, it is difficult to differentiate sources by using chemical methods. Therefore, developing more practical and affordable methods would be valuable for the food industry. Optica...
Citation Formats
H. L. Mudoga, H. Yücel, and N. S. Kincal, “Decolorization of sugar syrups using commercial and sugar beet pulp based activated carbons,” BIORESOURCE TECHNOLOGY, pp. 3528–3533, 2008, Accessed: 00, 2020. [Online]. Available: