关键词:粉煤灰;莫来石晶须;相变 中图分类号:X773文献标识类:A 文章编号:1005-8249(2017)06-0003-05 Liu Lei, Zhou Tao, Tang Peng-wei, Dou Kuizhou, Jiang Yinshan (Schoolfmaterals science and engineeing,JilinUiversity,Jilin 30025Chn Abstract: Cireulating fluidized bed (CFB) high alumina fly ash and ordinary coal fumace ( OF) high alumina fly ash was used as raw material t prpe mie whisb solistate ractin n tireting aent, as tatalemply d ps fon of prdutsanalyedbyR nd EMThefects of sin iios ofrwaas the degeeofrystlizon sthestperatre and holding te, directing agen onten onthe synthesis prducts ere disussed seleted theresonble prearation tchology paramter is selected and the reaction mechanism for synthesis of mullite whiskers is analysed Keywords: fly ash; mullite whiskers; phase transition 陶瓷晶须是指具有一定长径比的针状单晶体,须具有不受氧化环境影响、价格低廉等特点,因此, 直径小,很难以容纳常规晶体材料中的缺陷。
粉煤灰综合利用 2016 NO.5FLYASHCOMPREHENSIVEUTILIZATION 专题研究
粉煤灰合成沸石对重金属铅与镍的吸附性能研究* Adsorption of Heavy Metal Lead and Nickel by Zeolite Synthesized from Fly Ash
程婷,陈晨²,许文静',干方群,吴伟3 (1.江苏城市职业学院城市科学系,江苏南京210017;2.江苏科技大学环境与化学工程学院,江苏镇江212018; 3.江苏省环境科学研究院环境工程重点实验室,江苏南京210036) 摘要:利用粉煤灰合成的沸石吸附混合重金属Ni"与Pb²”,考察吸附剂量、初始pH、反应温度与反应时间对其竞 争吸附效果的影响,探讨沸石吸附Ni”与Pb”"的吸附动力学。
结果表明:随着吸附剂量的逐渐增大,沸石对Ni”与Pb²
二级动力学模型。
关键词:粉煤灰;重金属;铅;镍;沸石;竞争吸附 中图分类号:X52文献标识码:A文章编号:1005-8249(2016)05-0012-05 Cheng Ting', Chen Chen², Xu Wenjing', Gan Fangqun', WuWei (1.Department of City Science,Jiangsu City Vocational College,Nanjing 210017; 2.School of Environmental and Chemical Engineering,Jiangsu University of Science and Technology,Zhenjang 212018; 3. Jiangsu Provincial Academy of Environmental Science,Key Laboratory of Environmental Engineering, Nanjing 210036) AbstractThe experiments were conducted to examine the adsorption ofmixed heaymetalsNi andPb²through snthesizing zelite frm y ash.headsrben enital Handreactioeraue dreatmewereetigatedt studthmpetivedtietf ns.The adt kinti quto was al disdTh reults shwed that, wih theeasing fadsret dageeadrptl rate fNanPbysthzeliteaprodnthtraed adpiityedgallhetiad sequence of lead ion and nickel ion was Pb>Ni in the whole adsorption process The initial pH had significant effct on the removal of Ni²* and Pb2. In acidic environment, the adsorption of Pb²* in mixed heavy metals inhibited the adsorption of Ni².With the increasing of reaction temperature and reaction time, the aorption removal rate forNi² and Pb²was improved continuusly.The adsrptio removal rate forey metalPb²washiherthan N²indiferent reaction tmperathe adsoptin reationfrmixed heaymetal ions fNi²and Pb²mathd t the pseudo-second class reaction kinetics model. Key words:coal fy ash; heavy metal; lead; nickel; zeolite; adsorption
重金属污染中毒性较大的一种。
粉煤灰综合利用 2013 NO.6FLYASHCOMPREHENSIVEUTILIZATION 试验与应用
粉煤灰合成沸石对混合重金属离子的吸附研究* Adsorption of Mixed Heavy Metal Ions by Zeolite Synthesized from Coal Fly Ash
陈晨',程婷2 (1.江苏科技大学生物与化学工程学院,江苏镇江212018; 2.江苏城市职业学院城市科学系,江苏南京210017) 摘要:利用粉煤灰合成沸石吸附混合重金属离子Cu²、Ni²"、Pb”、Zn”,考察初始浓度对沸石吸附4种混合重金属 离子的吸附效果影响。
关键词:粉煤灰;重金属;沸石;竞争吸附 中图分类号:XTQ649.4"5文献标识码:A文章编号:1005-8249(2013)06-0020-04 Chen Chen', Cheng Ting² (1.SchoolfBiologyandChemicalEngineeing,JingsuUiversityfScience andTechnologyZhenjang 08 2. Department of City Science, Jiangsu City Vocational College, Nanjing 210017 ) Abstract:The experiment was conductedt examine the adsorption of mixe heay metals Cu², Ni² , Pb² and Zn² throughsymthesiing zeolite from col fyash The initial cnentration was investigated to study th adsorption effct of mix heavy metal ioThe results showed that, theinitial cntatinadsignificntftthdsptiftfheaymetalheremalratfmie hevymetalsbysynthti lite was diffeent from the initial oncentration.When the initial ncentration was 50 mg/Land 100mg/L, the adsorption sequence of heavy metals was Cu>Pb>Ni>Zn. But when the initial concentration was 200 mg/L and 300 mg/L, the adsorption sequence bee Cu Pb>Zn>Ni. In addi- tion, the adsorption ability of Pb² and Cu²* by synthetic zeolite was greater than Zn²* and Ni2* Key words:coal fly ash; heavy metal; zeolite; adsorption 近年来随着工业排污量的急剧增加,大量重金属备受关注。
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION 2014 NO.3 试验与应用 粉煤灰合成沸石对Cr²+的吸附性能研究* Research on the Adsorption Properties of Crby Synthesis of Zeolite from Fly Ash 程婷,刘海霞',陈晨²,王志良3 (1.江苏城市职业学院城市科学系,江苏南京210017; 2.江苏科技大学生物与化学工程学院,江苏镇江212018; 3.江苏省环境科学研究院环境工程重点实验室,江苏南京210036) 摘要:利用粉煤灰合成沸石吸附重金属Cr”,探讨吸附剂量、初始pH值以及反应温度对Cr"吸附效果的影响,同 时进行吸附等温线和吸附动力学的数据模拟。
关键词:三价铬离子;粉煤灰;沸石吸附 中图分类号:TQ649.4+5文献标识码:A文章编号:1005-8249(2014)03-0015-04 CHENG Ting', LIU Haixia', CHEN Chen², WANG Zhiliang 1. Department of City Science,Jiangsu City Vocational College,Nanjing 210017; 2.SehoolofBiology andChemical Engineering,JiangsuUniversity fScience andTechnology,Zhenjiang 2208; 3. Jiangsu Provincial Academy of Environmental Science, Key Laboratory of Environmental Engineering,Nanjing 210036 AbstractThe experiment was condeted to examine the adsoption properties of Cr through sntheizing zelite from coalfly ashThe adsorbent dsage, inital pH and the reaction temerature were nvestigated in the tests.The adorptin isthem and kinetis quation was also discedThr e t, tart dl Ha thr siift ft tlCh thecreing theare determat f Cwaend the atatptoapcity waeed gadllT removalrte of Crwas100% wh theiniial pH was 4.Ieaing therection temeture wasnegtive to theasrption f CrTheremal C deesed gdll wih the rise ofretio tmertTheadstion ps of C aced thFreich adsoionisthmn d dition, the reaction of adsorption on zeoliteto Cr matched to the pseudo-second classreaction kinetis model. Key words:Trivalent chrmium ion; Coal fly ash; Zeolite; Adsorption 近年来大量重金属污染物排向环境当中,对生态物。
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION2016 NO.2
试验与应用
粉煤灰合成沸石及其在重金属废水处理中的应用 The Synthesis of Zeolitic Absorbing Material from Fly Ash of Power Plant and its Application on the Treatment of Waste Water containing Heavy Metals
于家琳,杨阳',KevinLi²,徐冬,郭桦,刘汉强!
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION2013 NO.5
专题研究
粉煤灰制备多孔水处理材料的试验研究* Study on the Preparation of Porous Fly Ash Water Treatment Materials
郑楠,宋慧平,高瑞,程芳琴,薛芳斌 (山西大学资源与环境工程研究所,国家环境保护煤炭废弃物资源化高效利用 技术重点实验室,山西太原030006)
摘要:针对粉煤灰粒度细小带来的分离困难等问题,研究了一种粉煤灰制备多孔水处理材料的方法。
关键词:粉煤灰;成型;多孔;水处理材料 中图分类号:X703文献标识码:A文章编号:1005-8249(2013)05-0015-05 Zheng Nan, Song Huiping,Gao Rui, Cheng Fangqin, Xue Fangbin (State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources, Institute of Resources and Environment Engineering, Shanxi University,Taiyuan 030006,China ) Abstract:Prusmaterials made fflyahforwastewater trement tolve th prblmf separatingyashfrm solutinreultedfmit mall paticle ize,was investiatd i this sudyheiluning factor were studied in this prepatin procesuhas thedage of lim d aluminum powder, the particle size of fly ash, stiming speed and so n. The bibulous ratio, COD removal tio, H*N removal ratio, cmre sive strength,dry dnsity,and fst resistane of porus matrial were aso instigatedThe results indicated that the ptium preprati condi tions were as folows: the quality tio of fly ash,lime,psum, cment, alminumswater and sdium dodecylbenene sulfnatewas34.50.5 2:4:0.056350.15, the granulrity fly ash,lie,pu and ment was 0.75mm, and the stiing speed was 400r/minTh indies of th porous test seien were that th dry densitywas40590kg/mmpresive stenth was0.0.9MPabiblusrti as0%80%,ODe moval effciency was 22%,NHN removal effcieney was38%,quality loss ratio aftr freezethw was 2.5% and presive strength sfter frecze was 0.5MPa This porous materials prepared from fly ash are high quality waste water treatment mterials ons...
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION 2017 NO.3 试验与应用 粉煤灰再生混凝土氯离子渗透性能影响因素研究 Study on Influencing Factors of Chloride Ion Permeability of Fly Ash Recycled Concrete 杨益,宁翠萍,苟胜荣,徐志彪 (杨凌职业技术学院建筑工程分院,陕西杨凌712100) 摘要:通过对再生混凝土试件进行氯离子自然扩散试验,研究了粉煤灰掺量、干湿循环、侵蚀时间、孔隙率4 个因素对再生混凝土氯离子渗透性能的影响。
关键词:粉煤灰;再生混凝土;氯离子;渗透性能;影响因素;干湿循环;孔隙率 中图分类号:TU528.33文献标识码:A文章编号:1005-8249(2017)03-0019-04 Yang Yi, Ning Cuiping, Gou Shengrong, Xu Zhibiao ( Yangling Vocational and Technical College, Yangling,Shanxi, 712100, China ) Abstract: The ffets of fly sh content,wet and dry cycleerosion time and porsityn the chloride n permeability of recycled conret were stbsng ehrid pntans ifsitst reyld etpeimherss shthat thadiinfas n effetively mprove the hloride ion pemeability of recycled cnerete, and the hlride ion pemestion apaity inreses with the inerease f fy ash content, andthen decreases with the ncrease of flyash conten. The optimm content ofly ash is 20% ;The we and dry cyele conditios can significantly accelerate the permeability f chloride ions. The effet of wet and dry cyele on chloride ion permeability is not related to the addition of fy ah. The diffsion rate of chloride ion is bviously icreas with the prolongation of erosion time The surface Gifusion is faster than th intemal difsi, ndthe difusion of the chloride n permebilty ineases with the porsit ncreasing, and the porosity is the lwest whe th fly ash content is 20% and the impermeabilityis the best. Keywords: fly ash; reeycled conerete; hloride ion; permeability; infueneing factors; wet and dry cyele; porosity 混再生混凝土(Recycled AgregateConcrete,简损失。
粉煤灰综合利用 FLYASHCOMPREHENSIVEUTILIZATION2014 NO.6
综述 粉煤灰与化学外加剂复掺改性水泥基材料的研究现状 A summary of cement-based materials containing flyash and chemical admixtures
徐刚 (同济大学材料科学与工程学院水泥基材料研究所,上海201804) 摘要:从工作性、力学性能、耐久性以及粉煤灰与化学外加剂适应性4个方面介绍了目前国内外学者利用粉煤灰 与今后可能的研究重点。
粉煤灰综合利用 2011 NO.6 FLYASHCOMPREHENSIVEUTILIZATION 试验与应用 粉煤灰、矿渣掺量对胶砂强度的影响 Effect of the Content of Fly ash and Slag on the Strength of Mortar 周万良12 (1.合肥工业大学土木与水利工程学院,合肥230009;2.武汉大学水利水电学院,武汉430072) 摘要:对不同粉煤灰、矿渣掺量的胶砂抗压、抗折强度进行了研究。
关键词:粉煤灰掺量;矿渣掺量;胶砂强度 中图分类号:TQ177.6*2文献标识码:A文章编号:1005-8249(2011)06-0032-04 Zhou Wan-liang (College of Civiland HydraulicEngineering,HefeiUniversty of Technology,Hfei230009,China) Abstract;the strength of mortar with diferent ontent of fly ash and slag was studied.The rewlts indicate; With the increae of substited aout of cment by ahin cmet mrar3dand 2dpreive andfeuralstnth fmotar gdually dceWih theincre substitted mount f cmet by slag in ment mrar, d cmpesiv ad flexur strength f mortar ntiuusly decrees; if subtitutd amunt isles th5%th 2d cmpeive ndfexulstength f themrshigher th thtf themar wihot slag,i substittdou s greater than 60% , that will bee lower. Key wordscontent of fly ash;contet of slag;strength of mortar 粉煤灰和矿渣(矿渣为粒化高炉矿渣粉的简称) 掺量变化而变化的规律,为粉煤灰、矿渣的在混凝土中 是常见的两类混凝土掺合料,它们掺人混凝土不但能 的应用和相关标准的制定提供参考。