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Physicochemical Problems of Mineral Processing

Tytuł artykułu

Caustic-digested starch and its adsorption on hematite

Autorzy Tang, M.  Wen, S.  Tong, X. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN Adsorption characteristics on hematite of caustic-digested starch by sodium hydroxide or potassium hydroxide were investigated through a series of tests, like adsorption tests, paste titration and zeta potentials measurement, scanning electron microscope measurement (SEM) and Fourier transform infrared spectroscopic analysis (FTIR) as well. An attempt was made in order to identify the possible effects of starch digested with alkali at different concentrations on its adsorption on mineral surfaces. All results pointed out that a different amount of carboxyl groups in the starch gel were harvested from alkali-digestion as a function of concentrations of sodium hydroxide or potassium hydroxide; more acidic groups were produced if higher concentrations of alkali were added. These carboxyl groups may contribute the acid/base interaction of the caustic-digested starch on hematite. Also, different concentrations of sodium hydroxide to digest starch seem to induce different degrees of its gelatinization from the SEM results, partially attributing to a wide range of its adsorption capacities on mineral surfaces. The optimum adsorption density of the caustic-digested starch on mineral surfaces, 9.87 mg/g hematite for sodium hydroxide and 10.51 mg/g hematite for potassium hydroxide, respectively, was achieved at the weight ratio of starch to sodium/potassium hydroxide as 1:2.
Słowa kluczowe
EN starch   digestion   alkali   carboxylic group  
Wydawca Oficyna Wydawnicza Politechniki Wrocławskiej
Czasopismo Physicochemical Problems of Mineral Processing
Rocznik 2017
Tom Vol. 53, iss. 1
Strony 69--81
Opis fizyczny Bibliogr. 42 poz., rys., tab.
autor Tang, M.
  • State Key Lab of Complex Nonferrous Metal Resources Clean Utilization, 650093, China,
  • Department of Mineral Processing, Kunming University of Science and Technology, Yunnan, China, 650093
autor Wen, S.
  • State Key Lab of Complex Nonferrous Metal Resources Clean Utilization, 650093, China
  • Department of Mineral Processing, Kunming University of Science and Technology, Yunnan, China, 650093
autor Tong, X.
  • State Key Lab of Complex Nonferrous Metal Resources Clean Utilization, 650093, China
  • Department of Mineral Processing, Kunming University of Science and Technology, Yunnan, China, 650093
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Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-45c8d7b4-473a-4729-b0b9-f35692ed7bfb
DOI 10.5277/ppmp170106