Comparison on the Surface Structure Properties along with Fe(II) and Mn(II) Removal Characteristics of Rice Husk Ash, Inactive Saccharomyces cerevisiae Powder, and Rice Husk

作者：Jiang, Zhao; Cao, Bo; Su, Guangxia; Lu, Yan; Zhao, Jiaying; Shan, Dexin; Zhang, Xiuyuan; Wang, Ziyi; Zhang, Ying^*

来源：Biomed Research International, 2016, 2016: 7183951.

DOI：10.1155/2016/7183951

• HEAVY-METAL IONS
• AQUEOUS-SOLUTION
• BY-PRODUCTS
• FLY-ASH
• BIOSORPTION
• ADSORPTION
• WATER
• CR(III)
• CD(II)
• PB(II)

This study selected solid wastes, such as rice husk ash (RHA), inactive Saccharomyces cerevisiae powder (ISP), and rice husk (RH), as the potential adsorbents for the removal of Fe(II) andMn(II) in aqueous solution. The structural characteristics, functional groups, and elemental compositions were determined by scanning electron microscope (SEM) and Fourier translation infrared spectrum (FT-IR) analyses, respectively. Then the influence on the Fe(II) andMn(II) removing efficiency by the factors, such as pH, adsorbent dosage, initial Fe(II) andMn(II) concentration, and contact time, was investigated by the static batch test. The adsorption isotherm study results show that Langmuir equation can better fit the Fe(II) and Mn(II) adsorption process by the three adsorbents. The maximum adsorption amounts for Fe(II) were 6.211mg/g, 4.464mg/g, and 4.049mg/g by RHA, ISP, and RH and for Mn(II) were 3.016mg/g, 2.229mg/g, and 1.889mg/g, respectively. The adsorption kinetics results show that the pseudo-second-order kinetic model can better fit the Fe(II) andMn(II) adsorption process. D-Rmodel and thermodynamic parameters hint that the adsorption processes of Fe(II) and Mn(II) on the three adsorbents took place physically and the processes were feasible, spontaneous, and exothermic.

• 出版日期2016
• 单位东北农业大学