Microsoft Word 邵学新_new_.doc

Size: px

Start display at page:

Download "Microsoft Word 邵学新_new_.doc"

功卜
5 years ago
Views:

1 土壤 (Soils), 2014, 46(6): 杭州湾典型潮滩湿地植物带沉积物磷吸附特征 1, * 1 1 ( ) (0 ~ 1 h) (1 ~ 16 h) (16 ~ 72 h) 3 Langmuir (Q max ) ~ mg/kg Q max (NAP) ~ mg/kg NAP Q max 4 EPC 0 EPC 0 Q max NAP Q max EPC 0 X142 [1] [2] - [3 5] [6 9] PO 3 4 -P /, ph [7, 10 11] ( 1) ( ) (2012BAC13B02-2) ( ) * (hangzhoubay@126.com) (1980 ) shaoxuexin@126.com

6 1033 藨 (Scirpus mariqueter)(phragmites australis) (Spartina alterniflora) 藨 [12] 16 1 273 mm 图 1 研究区域地理位置示意图 Fig. 1 Location of the study area 1.

2 藨 (Scirpus mariqueter)(phragmites australis) (Spartina alterniflora) 藨 [12] mm 图 1 研究区域地理位置示意图 Fig. 1 Location of the study area (CK) 藨 (SM) (SA) (PA) ~ 5 0 ~ 5 cm ( 1 kg) 3 (LGJ- 10C ) (2 mm) Malvern Mastersizer 2000 (TOC) ph (EC) ph (PHS-3C) (DDSJ-308A) (TP) (IP) 1 mol/l HCl (OP) TP IP [13 14] 1.3 (0.2 mg/l) (0.6 mg/l) (2.0 mg/l) 3 PO 3 4 -P 7 ph g ( g) 250 ml 100 ml 0.1% 2 [15] (25±1) 200 r/min h 10 5 ml r/min 10 min 0.45 µm ( Skalar San++) 3 ±5% Q (mg/kg) = (C 0 C) V/W V (L) W (kg) C 0 C [16] Elovich [10, 17] Q = a + blnt Q t (mg/kg) t (h) a b g ( g) 50 ml 20 ml mg/l 1.3 (25±1) 200 r/min 48 h 5 ml r/min 10 min 0.45 µm ( Skalar San++) 3 ±5% Langmuir Freundlich Langmuir Freundlich Langmuir (NAP-Native adsorpbed exchangeable phosphorus) Zhou [6] Langmuir 0 V Qmaxc eq Qmaxceq 0 V ( cadd ceq ) = + c 0 eq (1) w KL + c eq K w L + c eq Q max PO 3 4 -P

3 (mg/kg) c eq PO 4 3 -P K L Langmuir c add V (L) w (kg) c 0 eq PO 3 4 -P 0 (1) NAP (2) (3) (4) NAP (ECP 0 ) (K p ) 0 maxceq 0 0 eq L + ceq Q NAP = + c V w K ( ) ( ) L max eq L + eq + L eq 0 = 0 0 L max L + eq eq (2) K Q c K c K c V w EPC (3) K Q K c c V w K p =NAP / ECP 0 (4) PO 3 4 -P ( mg/l) PO 3 4 -P 0.2 mg/l 1 h PO 3 4 -P PO 3 4 -P 70% 2 ~ 4 h PO 3 4 -P PO 3 4 -P 4 h 10 h 藨 16 h PO 3 4 -P 30% PO 3 4 -P 24 h 32 h PO 3 4 -P 0.6 mg/l 2.0 mg/l (0 ~ 1 h) (1 ~ 16 h) (16 ~ 72 h) 0.6 mg/l 16 h PO 3 4 -P (16 ~ 32 h) (32 ~ 48 h) 2.0 mg/l 16 h (16 ~ 32 h) (32 ~ 48 h) (PA- SA- SM- 藨 CK - ) 图 2 杭州湾潮滩湿地沉积物对 PO 3 4 -P 的吸附动力学曲线 Fig. 2 Kinetic curves of PO 3 4 -P adsorption by surface sediments in Hangzhou Bay wetland 4 PO 3 4 -P 16 h 32 h 48 h Froelich [18] 48 h PO 3 4 -P PO 3 4 -P 藨 PO 3 4 -P 0.2 mg/l PO 3 4 -P 9 ~ 11 mg/kg (P>0.05) 0.6 mg/l

4 mg/kg (P<0.05) (37 mg/kg) (38 mg/kg) 藨 (41 mg/kg) 2.0 mg/l PO 3 4 -P 60 ~ 114 mg/kg 0.6 mg/l 1 Elovich (R 2 ) PO 3 4 -P 0.2 mg/l R 2 PO 3 4 -P mg/l PO 3 4 -P [19] R 2 Wang [17] mg/l Elovich 表 1 不同植被类型下沉积物 PO 3 4 -P 吸附动力学简单 Elovich 模型参数 Table 1 Simple Elovich model parameters of phosphate adsorption on sediments PO 3 4 -P a b R 2 PA SA SM CK Langmuir 3 2 Langmuir R PO 3 4 -P (Q max ) ~ mg/kg (P<0.05) Q max 2.8 Q max NAP ~ mg/kg NAP Q max 4 EPC ~ mg/l NAP Q max EPC 0 (P>0.05) 图 3 改进 Langmuir 模型模拟沉积物对磷的等温吸附曲线 Fig. 3 The adsorption isotherms of phosphate simulated by modified Langmuir model 2.3 [10] ( 3) Q max TOC (P<0.05) (P<0.05) NAP Q max (mg/kg) 表 2 改进 Langmuir 模型拟合吸附等温线参数及相关计算结果 Table 2 Parameters obtained from the modified Langmuir model K L R 2 0 eq c NAP (mg/kg) EPC 0 PA K p (L/kg) SA SM CK

5 表 3 沉积物磷吸附特征参数与理化性质间的相关性分析 Table 3 Correlation coefficients between P adsorption parameters and chemical-physical properties of sediments ph EC TOC TP IP OP Q max * 0.98 * * 0.97 * * 0.59 NAP 0.98 * 0.99 ** 0.99 ** ** ** 0.65 EPC ** P 0.01 * P<0.05 TOC (P<0.05) EPC 0 TP 3 [20] Elovich b PO 3 4 -P [20] 1 b PO 3 4 -P (Q max ) Q max ( 2) ( 4) Q max 表 4 不同区域沉积物磷素吸附模型相关参数比较 Table 4 Parameters obtained from modified Langmuir model in different areas Q max (mg/kg) NAP (mg/kg) EPC 0 K p (L/kg) ~ ~ ~ ~ ( 2) ~ ~ ~ [21] 610 ~ ~ ~ ~ [22] ~ ~ ~ ~ [4] [18] 3 Q max Jin [11] <20 µm 70% 0 ~ 5 cm (PA SA SM) Q max TOC IP EC PO 3 4 -P TOC Fe 3+ TOC [21] Zhu [23] (Ca Mg Fe Al) Ca PO 3 4 -P [10, 20, 24] [12, 25] [20] PO 3 4 -P [7, 19] NAP NAP PO 3 4 -P [5] NAP [24] NAP TOC IP NAP NAP NAP ( 4) EPC 0 [8, 26] Zhou [6]

6 PO 3 4 -P (c pw ) EPC 0 c pw = EPC 0 c pw > EPC 0 PO 3 4 -P 2011 PO 3 4 -P 0.16 mg/l [25] EPC 0 PO 3 4 -P EPC 0 EPC 0 ( 4) EPC 0 CEC [19] EPC 0 [27] EPC 0 ( 3) [28] [24] [24] K p (L/kg) - [6, 17] 4 K p (0 ~ 1 h) (1 ~ 16 h) (16 ~ 72 h) 48 h Langmuir Q max Q max NAP Q max 4 EPC 0 EPC 0 Q max NAP Q max EPC 0 Langmuir NAP Q max EPC 0 K p [1] Correll DL. The role of phosphorus in the eutrophication of receiving waters: A review[j]. Journal of Environmental Quality, 1998, 27(2): [2],,,,,,. [J]., 2004, 19(5): [3]. [J]., 2000, 20(1): 2 9 [4],,. [J]., 2006, 25(1): [5]. - : [M]. :, 2013: [6] Zhou A, Tang H, Wang D. Phosphorus adsorption on natural sediments: Modeling and effects of ph and sediment composition[j]. Water Research, 2005, 39(7): [7] Wang SR, Jin XC, Bu QY, Zhou XN, Wu FC. Effects of particle size, organic matter and ionic strength on the phosphate sorption in different trophic lake sediments[j]. Journal of Hazardous Materials, 2006, 128(2 3): [8] Lai DYF, Lam KC. Phosphorus retention and release by sediments in the eutrophic Mai Po Marshes, Hong Kong[J]. Marine Pollution Bulletin, 2008, 57(6 12): [9] Wang QR, Li YC. Phosphorus adsorption and desorption behavior on sediments of different origins[j]. Journal of Soils and Sediments, 2010, 10(6): [10] Lopez P, Lluch X, Vidal M, Morgu IJA. Adsorption of phosphorus on sediments of the Balearic Islands (Spain) related to their composition[j]. Estuarine, Coastal and Shelf Science, 1996, 42(2): [11] Jin XC, Wang SR, Pang Y, Zhao HC, Zhou XN. The adsorption of phosphate on different trophic lake sediments[j]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2005, 254(1 3): [12],,,. [J]., 2011, 22(3): [13] Paludan C, Morris JT. Distribution and speciation of phosphorus along a salinity gradient in intertidal marsh sediments[j]. Biogeochemistry, 1999, 45(2): [14]. [M]. :, 1999: [15] Tian JR, Zhou PJ. Phosphorus fractions of floodplain sediments and phosphorus exchange on the sediment water interface in the lower reaches of the Han River in China[J]. Ecological Engineering, 2007, 30(3):

7 [16] Appan A, Wang H. Sorption isotherms and kinetics of sediment phosphorus in a tropical reservoir[j]. Journal of environmental engineering, 2000, 126(11): [17] Wang Y, Shen ZY, Niu JF, Liu RM. Adsorption of phosphorus on sediments from the Three-Gorges Reservoir (China) and the relation with sediment compositions[j]. Journal of Hazardous Materials, 2009, 162(1): [18] Froelich PN. Kinetic control of dissolved phosphate in natural rivers and estuaries: A primer on the phosphate buffer mechanism[j]. Limnology and oceanography, 1988, 33(4): [19],,,,. [J]., 2004, 13(4): [20],,,,,,,. [J]., 2006, 35(6): [21],,,,,,. [J]., 2002, 57(4): [22]. [D]. :, 2011: [23] Zhu T, Jenssen PD, Mæhlum T, Krogstad T. Phosphorus sorption and chemical characteristics of lightweight aggregates (LWA) - potential filter media in treatment wetlands[j]. Water Science and Technology, 1997, 35(5): [24],,. [J]., 2013, 45(1): [25] Shao XX, Wu M, Gu BH, Chen YX, Liang XQ. Nutrient retention in plant biomass and sediments from the salt marsh in Hangzhou Bay estuary, China[J]. Environmental Science and Pollution Research, 2013, 20(9): [26] House WA, Denison FH. Exchange of inorganic phosphate between river waters and bed-sediments[j]. Environmental science & technology, 2002, 36(20): [27] Richardson CJ, Vaithiyanathan P. Phosphorus sorption characteristics of Everglades soils along a eutrophication gradient[j]. Soil Science Society of America Journal, 1995, 59(6): [28],,,,. [J]., 2012, 67(7): Adsorption Characteristics of Phosphate on Sediment Under Typical Vegetation Types in Hangzhou Bay SHAO Xue-xin 1, 2, LIANG Wei 1, WANG Meng 1, WU Ming 1*, YE Xiao-qi 1, JIANG Ke-yi 1 (1 Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Wetland Ecosystem Research Station of Hangzhou Bay, State Forestry Administration, Fuyang, Zhejiang , China; 2 Institute of Environmental Science and Technology, Zhejiang University, Hangzhou , China) Abstract: Phosphate adsorption kinetics and isotherms on sediments under different vegetation types in Hangzhou Bay wetland were studied, and the influences of the sediment physicochemical properties on phosphorus sorption characteristics were analyzed. The results showed that there are three stages during sediment adsorption process with rapid adsorption (0 1 h), slow adsorption (1 16 h) and balance (16 72 h). The trend was not affected significantly by different plants. Indexes fitted from improved Langmuir model showed that sediment Q max was between mg/kg, and was significantly higher in sediment with plant growth than that of bare mudflat. Sediment NAP was between mg/kg, indicating a low native adsorbed exchangeable phosphorus. NAP trends between different types of sediments were similar to that of Q max values. Sediments EPC 0 under different vegetation types were lower than soluble reactive phosphorus concentration in the overlying water. So the sediment acts as the sink of phosphorus from tidal water. The variation of EPC 0 between different sediments was minor. Correlation analysis showed that the sediment Q max and NAP in Hangzhou Bay wetland were affected by organic matter, particle composition and total inorganic phosphorus concentration, and Q max was also affected by the electrical conductivity value. However, there are no significant correlations between sediments EPC 0 and physicochemical properties. In conclusion of that, plants can affect the physical and chemical parameters of sediments, thus can affect the adsorption kinetics and isotherms of phosphorus. Key words: Hangzhou Bay, Adsorption kinetics, Adsorption isotherms, Vegetation type

甘蔗糖业2011年电子合订本

甘蔗糖业2011年电子合订本甘蔗糖业 2011 年第 6 期,2011 年 12 月 Sugarcane and Canesugar No. 6, Dec. 2011 低钾胁迫对甘蔗不同品系生长和光合特性的影响李奇伟, 卢颖林, 周文灵, 陈迪文, 敖俊华, 黄莹, 黄振瑞, 江永 ( 广州甘蔗糖业研究所广东省甘蔗改良