Effect of Fe-Mn-Si on the Biomass Structure of Eichhornia Crassipes
WU Shao-wei，ZHU Duan-wei，ZHOU Wen-bing*，DENG Li
Laboratory of Plant Nutrition and Ecological Environment Research, Microelement Research Center of Huazhong Agricultural University, Key Lab of Subtropical Agriculture & Environment, Ministry of Agriculture, Wuhan 430070, China
Abstract：Eichhornia crassipes (water hyacinth) was cultivated under different iron (Fe), manganese (Mn) and silicon (Si) nutrient treatments for its biomass characteristics research which was determined by various items including nutrient element content (Fe, Mn and Si), adsorption sites and active function groups. The results show that Mn and Si can enhance acidic sites of the plant, in which Mn plays a great role, but Fe reduces the acidic sites. The sequence of acidic sites’ amount among three parts of the plant is root＞stem＞leaf, in the treatment of Fe, Mn and their combination, and leaf＞stem＞root in Si treatment. The amount of alkaline sites is less than that of acidic sites, and the difference in their distributions among three parts of the plant is not great. Mn and Si treated Eichhornia crassipes stalks have more amorphous material, such as lignin, pectin and xylan (hemicellulose), which have more functional groups of —OH, —COOH and acidic sites.
Key words：Eichhornia crassipes;Iron;Manganese;Silicon;Adsorption sites;Functional groups
[1] Malik A. Environment International, 2007, (33): 122. [2] CHEN Can, WANG Guo-xiang, ZHU Zeng-yin, et al(陈 灿, 王国祥, 朱增银, 等). Lake Science(湖泊科学), 2006, 18(5): 523. [3] Soltan M E, Rashed M N. Advances in Environmental Research, 2003, 7: 321. [4] Zawahry M M El, Kamel M M. Water Research, 2004, 38: 2967. [5] Rashwan W E, Girgis B S. Adsorption Science and Technology, 2004, 22: 181. [6] Udaya S L, Panigrahy B K, Ramakrishna S V. Indian Journal of Environment Protection, 2002, 22: 506. [7] Upadhyay A R, Mishra V K, Pandey S K, et al. Ecological Engineering, 2007, 30: 9. [8] MAO Da-ru, SHEN Jian-bo(毛达如, 申建波). Plant Nutrition Research Methods(植物营养研究方法). Beijing: China Agricultural University Press(北京：中国农业大学出版社), 2005. 18. [9] BAO Shi-dan(鲍士旦). Analysis of Agricultural Soil(土壤农化分析). Beijing: China Agricultural Press(北京：中国农业出版社), 2000. 263. [10] LI You-kai, JIANG Bai-fan, YUAN Ke-neng(李酉开, 蒋柏藩, 袁可能). Conventional Method of Soil Agricultural Chemistry(土壤农业化学常规分析方法). Beijing: Science Press(北京：科学出版社), 1983. 286. [11] Leyva-Ramos R, Bernal-Jacome L A, Acosta-Rodriguez I. Separation and Purification Technology, 2005, 45: 41. [12] DU Cai-qiong, LIN Ke-hui(杜彩琼, 林克惠). Journal of Yunnan Agricultural University(云南农业大学学报), 2002, 17(2): 193. [13] Viera R P V, Guimes R F, Rosana M N, et al. Carbohydrate Polymers, 2007, 67(2): 182. [14] ZHANG Hua(张 华). Modern Organic Spectral Analysis(现代有机波谱分析). Beijing: Chemical Industry Press(北京：化学工业出版社), 2005. 267. [15] MENG Ling-zhi, GONG Shu-ling, HE Yong-bing(孟令芝, 龚淑玲, 何永炳). Spectral Analysis of Organic Spectroscopy(有机波谱分析). Wuhan: Wuhan University Press(武汉: 武汉大学出版社), 2003. 213. [16] Liu C F, Xu F, Sun J X. Carbohydrate Res., 2006, 341(16): 2677. [17] Zhang H Y, Wang S G, Mu Q Y. Acta Hortic. Sin., 1996, 23(1): 23. [18] Muhammad I, Asma S, Saeed I Z. Journal of Hazardous Materials, 2009, 164: 161.
