载镁生物炭对水体中磷酸盐和植酸的吸附性能及机理分析

闫兵刚; 胡家玮; 姜晓谦; 蔚阳; 管运涛

doi:10.13205/j.hjgc.202006015

载镁生物炭对水体中磷酸盐和植酸的吸附性能及机理分析

doi: 10.13205/j.hjgc.202006015

1. 兰州理工大学土木工程学院, 兰州 730050;
2. 清华大学深圳国际研究生院, 广东深圳 518000

基金项目:

国家水体污染控制与治理科技重大专项(2017ZX07202002)。

详细信息

作者简介:
闫兵刚(1993-),男,硕士研究生,主要研究方向为土壤修复。2330498138@qq.com

通讯作者:
胡家玮(1982-),男,博士,副教授,主要研究方向为水体污染与治理。hujiaweiyly@hotmail.com

计量
- 文章访问数: 170
- HTML全文浏览量: 9
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2019-11-29

ADSORPTION PERFORMANCE AND MECHANISM OF PHOSPHATE AND PHYTIC ACID ON MAGNESIUM-LADEN BIOCHAR IN WATER

1. School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
2. Tsinghua Shenzhen International Graduate School, Shenzhen 518000, China

摘要

摘要: 水体中磷的大量存在引发了水体富营养化,导致水质逐步恶化、黑臭。为了有效处理水体中的磷(主要有磷酸盐和植酸类),采用成熟竹子为原料、氯化镁为改性剂,以氮气热解法制备载镁生物炭,对水体中磷进行吸附研究,同时实现对生物炭的资源化利用。通过载镁生物炭对无机、有机磷在水体中的动力学实验和解析实验,并结合X射线衍射、扫描电镜、傅里叶变换红外光谱等技术研究了载镁活性炭对磷酸盐及植酸的吸附性能及机理。结果表明:载镁生物炭对两种类型磷的吸附量较单一生物炭均显著提高,对磷酸盐和植酸的吸附平衡量分别达到105,165 mg/g。载镁生物炭对2种磷的吸附动力学均符合准二级动力学拟合方程,吸附等温线符合Langmuir和Freundlich方程,其对有机磷植酸的最大吸附量高于磷酸盐,吸附过程受多种机理共同作用,以化学沉淀吸附为主。此外,吸附过程中载镁生物炭分别与磷酸盐、植酸生成了针状的磷酸镁水合物和非晶态的含镁磷的复合物。
- 载镁生物炭 /
- 磷酸盐 /
- 植酸 /
- 吸附动力学模型 /
- 解吸
Abstract: The large amount of phosphorus in the water led to eutrophication, deterioration of water quality and thus made black and odorous water. In order to treat phosphorus mainly including phosphate and phytic acid in water, Mg-laden biochar was prepared with bamboo and magnesium chloride by nitrogen pyrolysis to adsorb inorganic phosphorus and organic phosphorus in water, and at the same time, realized resource utilization of biochar. In this paper, the kinetics and adsorption equilibrium as well as desorption of phosphate and phytic acid adsorbed on Mg-laden biochar in water were studied. The adsorption mechanism of phosphate and phytic acid on Mg-laden biochar was analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). The results showed that the adsorption of phosphate and phytic acid on Mg-laden biochar was significantly increased, compared to biochar; and the adsorption equilibrium concentrations of phosphate and phytic acid were 105, 165 mg/g, respectively. Both phosphate and phytic acid kinetic results complied well with the pseudo-second-order. Both Langmuir and Freundlich model produced the adsorption isotherm data well. The maximum adsorption of phytic acid was much higher than that of phosphate and the adsorption process was controlled by multiple mechanisms, dominated by chemical precipitation adsorption. Characterization results from XRD, SEM and FTIR showed that Mg-laden biochar formed needle-like magnesium phosphate hydrate with phosphate, and amorphous magnesium-phosphorus complex with phytic acid.
- Mg-laden biochar /
- phosphate /
- phytic acid /
- adsorption isotherm modeling /
- desorption

HTML全文

参考文献(41)

蒋艳红, 李安玉, 严发, 等. 载镁香蕉秆基生物炭对氮磷的吸附性能研究[J]. 农业资源与环境学报, 2018, 35(6):559-567.

FANG L P, WU B L, CHAN J K M, et al. Lanthanum oxide nanorods for enhanced phosphate removal from sewage: a response surface methodology study[J]. Chemosphere, 2018, 192:209-216.

REN Z F, XU X, GAO B Y, et al.2015. Integration of adsorption and direct bioreduction of perchlorate on surface of cotton stalk based resin[J]. Journal of Colloid and Interface Science,2015,459: 127-135.

DU X, HAN Q, LI J, et al. The behavior of phosphate adsorption and its reactions on the surfaces of Fe-Mn oxide adsorbent[J]. Journal of the Taiwan Institute of Chemical Engineers,2017, 76: 167-175.

YE Y Y, NGO H H, GUO W S, et al. Insight into biological phosphate recovery from sewage[J]. Bioresource Technology, 2016,218:874-881.

YANG S J, JIN P K, WANG X C. Phosphate recovery through adsorption assisted precipitation using novel precipitation material developed from building waste: behavior and mechanism [J]. Chemical Engineering Journal, 2016, 292:246-254.

MITROGIANNIS D, PSYCHOYOU M, BAZIOTIS I, et al. Removal of phosphate from aqueous solutions by adsorption onto Ca(OH) ₂ treated natural clinoptilolite [J]. Chemical Engineering Journal, 2017, 320:510-522.

ROQUES H, NUGOHO JEUDY L, LEBUGLE E A. Phosphorus removal from wastewater by half-burned dolomite[J]. Water Research, 1991, 25(8):959-965.

MUSTAFA S, ZAMAN M I, KHAN S. pH effect on phosphate sorption by crystalline MnO₂[J]. Journal of Colloid and Interface Science, 2006, 301(2):370-375.

ONYANGO M S, KUCHAR D, KUBOTA M, et al. Adsorptive removal of phosphate ions from aqueous solution using synthetic zeolite[J]. Industrial & Engineering Chemistry Research, 2007, 46(3):894-900.

ZENG L, LI X M, LIU J D. Adsorptive removal of phosphate from aqueous solutions using iron oxide tailings[J]. Water Research, 2004,38(5): 1318-1326.

NONLINE B F, MANOHAR D M,ANIRUDHAN T S. Kinetic and equilibrium modelling of lead(Ⅱ) sorption from water and wastewater by polymerized banana stem in a batch reactor[J]. Separation and Purification Technology, 2005,45(2): 131-140.

DAS J, PATRA B S, BALIARSINGH N, et al. Adsorption of phosphate by layered double hydroxides in aqueous solutions[J].Appled Clay Science, 2006,32(3/4): 252-260.

DRIZO A, FORGET C, CHAPUIS R P, et al. Phosphorus removal by electric arc furnace steel slag and serpentinite[J]. Water Research, 2006,40(8): 1547-1554.

KARGEORGIOU K, PASCHALIS M,ANASTASSAKIS G N. Removal of phosphate species from solution by adsorption onto calcite used as natural adsorbent[J].Journal of Hazardpus Materials, 2007,139(3): 447-452.

MAURICE S O, DALIBOR K, MITSUHIRO K, et al. Adsorptive removal of phosphate ions from aqueous solution using synthetic zeolite[J].Industrial & Engineering Chemistry Research, 2007,46(3): 894-900.

WANG B Y, LI C P, LIANG H. Bioleaching of heavy metal from woody biochar using Acidithiobacillus ferrooxidans and activation for adsorption[J]. Bioresource Technology, 2013, 146(10):803-806.

CHEN X C, CHEN G C, CHEN L G, et al.Adsorption of copper and zinc by biochars produced from pyrolysis of hardwood and corn straw in aqueous solution[J]. Bioresource Technology,2011, 102(19):8877-8884.

MOHAN D, SARSWAT A, OK Y S, et al. Organic and inorganic contaminants removal from water with biochar, a renewable, low cost and sustainable adsorbent: a critical review[J]. Bioresource Technology, 2014, 160(5):191-202.

蒋旭涛. 生物炭对水中氨氮和磷酸盐吸附性能研究[D]. 天津:天津大学, 2013:8-9.

YAO Y, GAO B, INYANG M, et al. Biochar derived from anaerobically digested sugar beet tailings: characterization and phosphate removal potential [J]. Bioresource Technology, 2011, 102(10): 6273-6278.

蒋旭涛, 迟杰. 铁改性生物炭对磷的吸附及磷形态的变化特征[J].农业环境科学学报,2014,33(9): 1817-1822.

JUNG K W, JEONG T U, KANG H J, et al. Preparation of modified-biochar from Laminaria japonica: simultaneous optimization of aluminum electrode-based electro-modification and pyrolysis processes and its application for phosphate removal[J].Bioresource Technology, 2016, 214: 548-557.

祝天宇, 卢泽玲, 刘月娥, 等.镁改性生物炭制备条件对其氮、磷去除性能的影响[J].环境工程, 2018,36(1): 37-41.

JIANG D, CHU B, AMANO Y, et al. Removal and recovery of phosphate from water by Mg-laden biochar: batch and column studies[J]. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2018,558:429-437.

MINEAR R A. Characterization of naturally occurring dissolved organophosphorus compounds [J]. Environmental Science and Technology, 1972, 6(5):431-437.

张友, 李干蓉, 方小宁, 等. 荣成天鹅湖水体有机磷的生物有效性和时空分布[J].地球与环境,2019,47(1): 10-15.

刘广龙, 朱端卫, 周易勇,等. 硝酸根对有机磷光解释放磷酸根的影响[J].中国环境科学, 2001, 36(12):3657-3664.

GIAVENO C, CELI L, CESSA R M A, et al. Interaction of organic phosphorus with clays extracted from oxisols [J]. Soil Science, 2008, 173(10):694-706.

ALSHAMERI A, YAN C J, AI-ANI Y, et al. An investigation into the ad-sorption removal of ammonium by salt activated Chinese(Hulaodu)natural zeolite: kinetics, isotherms, and thermodynamics[J]. Journal of the Taiwan Institute of Chemical Engineers, 2014, 45(2):554-564.

ZHANG M, GAO B, YAO Y, et al. Synthesis of porous MgO-biochar nanocomposites for removal of phosphate and nitrate from aqueous solutions[J].Chemical Engineering Journal,2012,210: 26-32.

LI R H, WANG J J, ZHOU B Y, et al. Simultaneous capture removal of phosphate, ammonium and organic substances by MgO impregnated biochar and its potential use in swine wastewater treatment [J]. Journal of Cleaner Production, 2017, 147: 96-107.

LI R H, WANG J J, ZHOU B Y, et al. Recovery of phosphate from aqueous solution by magnesium oxide decorated magnetic biochar and its potential as phosphate-based fertilizer substitute[J]. Bioresource Technology, 2016,215: 209-214.

YANG Q, WANG X L, LUO W, et al. Effectiveness and mechanisms of phosphate adsorption on iron-modified biochars derived from waste activated sludge[J].Bioresource Technology, 2018,247: 537-544.

COSGROVE D J. Inositol Phosphates. Studies in Organic Chemistry[M]. Elsevier, Amsterdam, 1980.

MARTIN C J, EVANS W J. Phytic acid: divalent cation interactions. V. titrimetric, calorimetric, and binding studies with cobalt (Ⅱ) and nickel (Ⅱ) and their comparison with other metal ions [J]. Journal of Inorganit Biochemistry, 1987, 30(2):101-119.

QIAN L, CHEN B. Interactions of aluminum with biochars and oxidized biochars: implications for the biochar aging process[J]. Journal of Agricultural and Food Chemistry, 2014,62(2): 373-380.

WANG Z Y, ZHENG H, LUO Y, et al. Characterization and influence of biochars on nitrous oxide emission from agricultural soil[J]. Environmental Pollution, 2013,174: 289-296.

ZHANG M, GAO B, YAO Y,et al. Phosphate removal ability of biochar/MgAl-LDH ultra-fine composites prepared by liquid-phase deposition[J]. Chemosphere,2013,92(8):1042-1047.

XIE J, WANG Z, LU S Y, et al.Removal and recovery of phosphate from water by lanthanum hydroxide materials[J]. Chemical Engineering Journal, 2014,254:163-170.

ARAI Y, SPARKS D L. ATR-FTIR spectroscopic investigation on phosphate adsorption mechanisms at the ferrihydrite-water interface[J]. Journal of Colloid and Interface Science,2001, 241(2):317-326.

施引文献

资源附件(0)

访问统计