原位固化落叶松单宁对Cr(Ⅵ)的氧化还原吸附

Abstract

Abstract: The adsorption behaviors of Cr⁶⁺ by in situ immobilized larch tannin were investigated. It was found that the adsorption is characterized by redox adsorption, that is, Cr⁶⁺ is first reduced into Cr³⁺ and then adsorbed. The adsorption capacity of this adsorbent to Cr⁶⁺ was 183.6 mg/g at 303 K when initial concentration of Cr⁶⁺ was 297.3 mg/L and pH value was 2.0, and the adsorption capacity was increased with the increase of temperature. The optimal pH value for the adsorption of Cr⁶⁺ was 2.0 because the reduction of Cr⁶⁺ is accelerated under acidic condition. The adsorption isotherm of Cr⁶⁺ by in situ immobilized larch tannin can be described by the Freundlich equation. The data of adsorption rate can be well fitted by the pseudo-second-order rate model. The breakthrough point of Cr⁶⁺ in adsorption column was around 120 bed volumes when the inlet concentration of Cr⁶⁺was 232.4 mg/L.

Key words: tannin, larch bark, in situ immobilized tannin, adsorption

CLC Number:

TQ94

HOU Xu;LIAO Xue-pin;SHI Bi. Redox Adsorption of Cr(Ⅵ) by in Situ Immobilized Larch Tannin[J]. , 2007, 27(6): 1-7.

[1]	CHEN Jinwei, WANG Dan, SHANG Shibin, LIU He, CAI Zhaosheng. Preparation of Amino-terminated Hyperbranched Polymer Grafted Dialdehyde-based Nanocellulose and Its Adsorption Properties of Ni²⁺ [J]. Chemistry and Industry of Forest Products, 2019, 39(4): 18-26.
[2]	WU Shaoji, JIANG Kun, YE Yueyuan, LIU Yunquan, WANG Duo, LI Shuirong. Preparation of Activated Carbon from Co-pyrolysis Char of Sewage Sludge and Poplar Sawdust and Its Application in Wastewater Treatment [J]. Chemistry and Industry of Forest Products, 2019, 39(4): 56-64.
[3]	SUN Yongchang, ZHANG Bingqing, LIU Liming, LIU Xiaonan, SHI Zhengjun. Preparation of Lignin-based Carbon Material and Adsorption Mechanism of Cr(VI) from Wastewater [J]. Chemistry and Industry of Forest Products, 2019, 39(4): 120-128.
[4]	CHEN Jinwei, SHANG Shibin, SHEN Minggui, WANG Dan, FU Fei, CAI Zhaosheng. Preparation of Amino Acid-terminated Nanocellulose and Adsorption Properties of Pb(Ⅱ) [J]. Chemistry and Industry of Forest Products, 2018, 38(6): 11-19.
[5]	LIU Yunlong, SONG Ke, XIAO Zhuobing, GUO Jie. Adsorption of Chlorogenic Acid from Eucommia ulmoides Leaves on ZSM-5 Molecular Sieve [J]. Chemistry and Industry of Forest Products, 2018, 38(6): 95-102.
[6]	SUN Jiaming, E Lei, MA Chunhui, LI Wei, LIU Shouxin. Preparation and Metal Ion Adsorption Performance for Heavy Metals of Nitrogen-doped Carbon Aerogels Prepared from Cellulose via Hydrothermal Carbonization Method [J]. Chemistry and Industry of Forest Products, 2018, 38(4): 20-28.
[7]	XIA Yuantao, YANG Meihong, SUN Huijie, GAO Yating, ZHOU Gui. Preparation of Aspergillus niger Mycelium-chitosan Biosorbent and Its Cu²⁺ Adsorption Mechanism [J]. Chemistry and Industry of Forest Products, 2018, 38(4): 117-123.
[8]	TONG Guobin, XU Zhou, LI Wei, LIU Shouxin. Preparation,Characterization and Gaseous Benzene Adsorption Performance of Mo-loaded Activated Carbon [J]. Chemistry and Industry of Forest Products, 2018, 38(3): 33-40.
[9]	LIU Yunlong, SONG Ke, XIAO Zhuobing, GUO Jie. Adsorption Kinetics of Lycorine and Galanthamine with Molecular Sieve ZSM-5 [J]. Chemistry and Industry of Forest Products, 2018, 38(3): 122-128.
[10]	DONG Yifan, LIU Zhijia, LAN Tianqing. Effect of Pretreatment Methods on Cellulase Adsorption Profiles of Sugarcane Bagasse [J]. Chemistry and Industry of Forest Products, 2018, 38(2): 75-79.
[11]	HUANG Li, SUN Kang, ZHU Guangzhen, LIU Shicai. Effect of Adsorption and Desorption of Butanone on Micropore Structure of Activated Carbon [J]. Chemistry and Industry of Forest Products, 2017, 37(5): 146-152.
[12]	WANG Guodong, JIANG Jianchun. Neural Network Model for Working Capacity Prediction of VOCs Adsorption on Carbon Materials [J]. Chemistry and Industry of Forest Products, 2017, 37(4): 123-128.
[13]	SHEN Wangqing, LEI Yang. Kinetics and Thermodynamics Studies of the Adsorption of Pb²⁺ onto NaOH/KOH Modified Lemon Residues [J]. Chemistry and Industry of Forest Products, 2017, 37(3): 141-146.
[14]	WANG Dawei, ZHAO Ning, JI Mei, FENG Xiaofei, HU Lianrong. Monosaccharide Compositions of Yunnan Bitter Cherry Tree Gum and Synthesis and Properties of Graft Copolymer [J]. Chemistry and Industry of Forest Products, 2017, 37(2): 65-71.
[15]	ZHANG Qing, SONG Bingqing, MENG Lingyi, YAN Mei, XIE Huifang, KONG Jinming. Biomimetic Synthesis of CMC@PANI and Its High Efficient Adsorption of Dyes in Aqueous [J]. Chemistry and Industry of Forest Products, 2017, 37(2): 85-92.

Redox Adsorption of Cr(Ⅵ) by in Situ Immobilized Larch Tannin

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments