| 1,048 | 76 | 255 |
| 下载次数 | 被引频次 | 阅读次数 |
以农业废弃物柚子皮为原料,在300和600°C下制备得到2种柚皮生物炭(BC300和BC600)。运用元素分析仪、扫描电镜和比表面积仪对生物炭的理化性质进行表征,同时从吸附动力学以及吸附热力学角度探讨生物炭对土壤磷的吸附能力。结果表明,随制备温度升高,柚皮生物炭芳香性增强,极性减弱。土壤对磷的吸附量随生物炭施加量增加而降低,且添加BC300的土壤对磷的吸附量高于添加BC600的土壤。准二级动力学方程和Freundlich等温方程可较好描述添加生物炭土壤对磷的吸附动力学和吸附等温行为。热力学计算结果表明,添加生物炭土壤对磷的吸附是吸热和熵增加的自发过程。柚皮生物炭可减少土壤对磷的固定,提高土壤磷的有效性,对于改良土壤具有一定的潜力。
Abstract：Two pomelo peel biochars(BC300and BC600)were prepared at different pyrolysis temperatures(300and 600 ℃)by oxygen-limited environment,respectively.The physical and chemical characteristics of pomelo peel biochars were characterized by Elemental analysis,BET-N2 surface area,scanning electron microscopy and FTIR spectra.The adsorption kinetics and thermodynamics were used to evaluate the adsorption capacity of phosphorus onto soil amended with pomelo peel biochars.The results showed that the aromaticity of biochars gradually increased and the polarity decreased with the increasing pyrolysis temperature.The adsorption capactity of phosphorus onto soil was inhibited with the increasing biochar dosages.In addition,the adsorption amount of phosphorus in soil amended with pomelo peel biochars obeyed the sequence of BC300>BC600.The time-resolved curves of phosphorus adsorption on pomelo peel biochars amended soil followed the pseudo second-order kinetic equation,and the adsorption isotherms was well described by the Freundlich model.The thermodynamic parameters indicated that phosphorus adsorption onto soil was spontaneous,endothermic,and entropy increasing process.In all,Pomelo peel biochars can reduce soil phosphorus fixation and enhance soil phosphorus availability,revealing that pomelo peel biochars have the potential for soil improvement.
[1]葛顺峰,周乐,门永阁,等.添加不同碳源对苹果园土壤氮磷淋溶损失的影响[J].水土保持学报,2013,27(002):31-35.
[2]李春越,王益,党廷辉,等.不同施肥配比对土壤磷素固液相分配及组分的影响[J].中国环境科学,2011,31(002):265-270.
[3]Chen B,Chen Z,Lv S.A novel magnetic biochar efficiently sorbs organic pollutants and phosphate[J].Bioresource Technology,2011,102(2):716-723.
[4]Cao X,Ma L,Liang Y,et al.Simultaneous immobilization of lead and atrazine in contaminated soils using dairy-manure biochar[J].Environmental Science&Technology,2011,45(11):4884-4889.
[5]Wu M,Pan B,Zhang D,et al.The sorption of organic contaminants on biochars derived from sediments with high organic carbon content[J].Chemosphere,2013(90):782-788.
[6]Hale S E,Alling V,Martinsen V,et al.The sorption and desorption of phosphate-P,ammonium-N and nitrate-N in cacao shell and corn cob biochars[J].Chemosphere,2013(91):1612-1619.
[7]Steiner C,Teixeira W G,Lehmann J,et al.Long term effects of manure,charcoal and mineral fertilization on crop production and fertility on a highly weathered Central Amazonian upland soil[J].Plant and Soil,2007,291(1-2):275-290.
[8]Laird D A.The charcoal vision:a win-win-win scenario for simultaneously producing bioenergy,permanently sequestering carbon,while improving soil and water quality[J].Agronomy Journal,2008,100(1):178-181.
[9]Tsai W T,Lee M K,Chang Y M.Fast pyrolysis of rice straw,sugarcane bagasse and coconut shell in an induction-heating reactor[J].Journal of Analytical and Applied Pyrolysis,2006,76(1):230-237.
[10]曾爱,廖允成,张俊丽,等.生物炭对塿土土壤含水量,有机碳及速效养分含量的影响[J].农业环境科学学报,2013,32(5):1009-1015.
[11]关连珠,禅忠祥,张金海,等.炭化玉米秸秆对棕壤磷素组分及有效性的影响[J].中国农业科学,2013,46(10):2050-2057.
[12]张华,张学洪,白少元,等.柚皮活性炭对氨氮吸附性能研究[J].工业水处理,2012,32(6):56-59.
[13]Wang Y,Wang L,Fang G,et al.Enhanced PCBs sorption on biochars as affected by environmental factors:Humic acid and metal cations[J].Environmental Pollution,2013,172:86-93.
[14]Li J,Li Y,Wu M,et al.Effectiveness of low-temperature biochar in controlling the release and leaching of herbicides in soil[J].Plant and Soil,2013,370:333-344.
[15]Uchimiya M,Wartelle L H,Lima I M,et al.Sorption of deisopropylatrazine on broiler litter biochars[J].Journal of Agricultural and Food Chemistry,2010,58(23):12350-12356.
[16]Zheng H,Wang Z,Deng X,et al.Characteristics and nutrient values of biochars produced from giant reed at different temperatures[J].Bioresource Technology,2013,130:463-471.
[17]Peng X,Ye L L,Wang C H,et al.Temperature-and durationdependent rice straw-derived biochar:characteristics and its effects on soil properties of an Ultisol in southern China[J].Soil and Tillage Research,2011,112(2):159-166.
[18]Uchimiya M,Wartelle L H,Klasson K T,et al.Influence of pyrolysis temperature on biochar property and function as a heavy metal sorbent in soil[J].Journal of Agricultural and Food Chemistry,2011,59(6):2501-2510.
[19]郑祥,雷洋,陈迪,等.纳米TiO2对模型病毒-f2噬菌体的吸附特性[J].中国科学:化学,2013(005):610-617.
[20]戴纪翠,宋金明,李学刚,等.胶州湾不同形态磷的沉积记录及生物可利用性研究[J].环境科学,2007,28(5):929-936.
[21]李际会,吕国华,白文波,等.改性生物炭的吸附作用及其对土壤硝态氮和有效磷淋失的影响[J].中国农业气象,2012,33(2):220-225.
[22]DeLuca T H,MacKenzie M D,Gundale M J.Biochar effects on soil nutrient transformations[J].Biochar for Environmental Management:Science and Technology,2009:251-270.
[23]Atkinson C J,Fitzgerald J D,Hipps N A.Potential mechanisms for achieving agricultural benefits from biochar application to temperate soils:a review[J].Plant and Soil,2010,337(1-2):1-18.
[24]Ali I,Al-Othman Z A,Alwarthan A,et al.Removal of arsenic species from water by batch and column operations on bagasse fly ash[J].Environmental Science and Pollution Research,2013:1-12.
[25]Ghasemi Z,Seif A,Ahmadi T S,et al.Thermodynamic and kinetic studies for the adsorption of Hg(II)by nano-TiO2from aqueous solution[J].Advanced Powder Technology,2012,23(2):148-156.
[26]张晓蕾,薛文平,徐恒振,等.近海沉积物对粪固醇的等温吸附和热力学研究[J].环境科学,2012,33(10):3547-3553.
[27]Malandrino M,Abollino O,Giacomino A,et al.Adsorption of heavy metals on vermiculite:influence of pH and organic ligands[J].Journal of Colloid and Interface Science,2006,299(2):537-546.
[28]郭文娟,梁学峰,林大松,等.土壤重金属钝化修复剂生物炭对镉的吸附特性研究[J].环境科学,2013,34(9):3716-3721.
基本信息:
DOI：10.16441/j.cnki.hdxb.20140100
中图分类号:X53
引用信息:
[1]郎印海,王慧,刘伟.柚皮生物炭对土壤中磷吸附能力的影响[J],2015,45(04):78-84.DOI:10.16441/j.cnki.hdxb.20140100.
基金信息:
国家水体污染控制与治理科技重大专项(2013ZX07202-007);; 教育部优秀新世纪人才支持计划(NCET-10-0758);; 青岛市科技发展计划项目(12-1-4-1-(16)-jch)资助