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Alkalinity stabilization behavior of bauxite residue:Ca-driving regulation characteristics of gypsum

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Journal of Central South University 2019年第2期26卷 383-392页

作者： LI Xiao-fei GUO Yin ZHU feng HUANG Long-bin LI Yi-wei kong xiang-feng XUE Sheng-guo School of Metallurgy and Environment Central South University The University of Queensland SMI Centre for Mined Land Rehabilitation Crop and Environment Sciences Department Harper Adams University

Alkaline anions,include CO3^2–,HCO3^–,Al(OH)4^–,OH^–,continuously released from bauxite residue(BR),will cause a potential disastrous impact on surrounding *** composition variation of alkaline anions,alkaline phase transformation pathway,and micro-morphological transition characteristics during the gypsum addition were investigated in an attempt to understand alkalinity stabilization *** demonstrated that alkaline anions stabilization degree in leachates can reach approximately 96.29%,whilst pH and alkalinity were reduced from 10.47 to 8.15,47.39 mmol/L to 2 mmol/L,*** the alkalinity stabilization,chemical regulation behavior plays significant role in driving the co-precipitation reaction among the critical alkaline anions(CO3^2–,HCO3^–,Al(OH)4^–,OH^–),with calcium carbonate(CaCO3))being the most prevalent among the transformed alkaline *** addition,XRD and SEM-EDX analyses of the solid phase revealed that physical immobilization behavior would also influence the stability of soluble alkali and chemical bonded alkali due to released Ca^2+from gypsum which aggregated the clay particles and stabilized them into coarse particles with a blocky *** findings will be beneficial for effectively regulating strong alkalinity of BR.

关键词： bauxite residue gypsum alkalinity stabilization phase transformation Ca-driven regulation

Improvement of alkaline electrochemical characteristics of bauxite residue amendment with organic acid and gypsum

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Journal of Central South University 2019年第2期26卷 430-439页

作者： kong xiang-feng LI Chu-xuan JIANG Jun HUANG Long-bin WU Chuan XUE Sheng-guo School of Metallurgy and Environment Central South University Centre for Mined Land Rehabilitation Sustainable Minerals Institute The University of Queensland Crop and Environment Sciences Department Harper Adams University

Neutralization of alkaline properties of bauxite residue(BR)by using organic acid and gypsum additions may effectively improve electrochemical properties and alleviate physicochemical barriers to ecological *** acids,citric acid and hybrid acid–gypsum additions were compared for their potential to transform and improve zeta potential,isoelectric point(IEP),surface protonation and active alkaline-OH groups,which are critical factors for further improvement of physicochemical and biological properties *** points of untransformed bauxite residue and six transformed derivatives were determined by using electroacoustic *** characteristics were significantly improved by the amendments used,resulting in reduced IEP and-OH groups and decreased surface protonation for transformed *** results revealed that the primary alkaline minerals of cancrinite,calcite and grossular were transformed by the *** treatments of citric acid and gypsum promoted the dissolution of *** the SEM examination,citric acid and gypsum treatments contributed to the reduction in IEP and redistribution of-OH groups on particle *** collective evidence suggested that citric acid and gypsum amendments may be used firstly to rapidly amend bauxite residues for alleviating the caustic conditions prior to the consideration of soil formation in bauxite residue.

关键词： bauxite residue alkalinity regulation organic acid gypsum electrochemical characteristic soil formation in bauxite residue

Industrial wastes applications for alkalinity regulation in bauxite residue: A comprehensive review

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Journal of Central South University 2019年第2期26卷 268-288页

作者： XUE Sheng-guo WU Yu-jun LI Yi-wei kong xiang-feng ZHU feng LI Xiao-fei YE Yu-zhen School of Metallurgy and Environment Central South University Crop and Environment Sciences Department Harper Adams University

Bauxite residue is a highly alkaline material generated from the production of alumina in which bauxite is dissolved in caustic *** 4.4 billion tons of bauxite residues are either stockpiled or landfilled,creating environmental risks either from the generation of dust or migration of *** alkalinity is the critical factor restricting complete utilization of bauxite residues,whilst the application of alkaline regulation agents is costly and difficult to apply *** now,current industrial wastes,such as waste acid,ammonia nitrogen wastewater,waste gypsum and biomass,have become major problems restricting the development of the social *** of bauxite residues alkalinity by industrial waste was proposed to achieve‘waste control by waste’with good economic and ecological *** review will focus on the origin and transformation of alkalinity in bauxite residues using typical industrial *** will propose key research directions with an emphasis on alkaline regulation by industrial waste,whilst also providing a scientific reference point for their potential use as amendments to enhance soil formation and establish vegetation on bauxite residue disposal areas(BRDAs)following large-scale disposal.

关键词： bauxite residue alkalinity transformation alkalinity regulation industrial waste soil formation in bauxite residue

高敏C-反应蛋白及颈动脉粥样硬化与急性脑梗死的关系

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中华老年医学杂志 2010年第8期29卷 629-631页

作者：孔祥锋陈明王萍新疆医科大学第五附属医院神经内科乌鲁木齐830011

目的探讨和分析血清高敏C-反应蛋白（hs-CRP）及颈动脉粥样硬化与急性脑梗死的关系.方法选取59例急性脑梗死患者为脑梗死组,同期选择健康体检者30例为对照组,测定血清hs-CRP含量,应用颈动脉彩色多普勒超声检查颈动脉粥样硬化斑块及颈... 详细信息

目的探讨和分析血清高敏C-反应蛋白（hs-CRP）及颈动脉粥样硬化与急性脑梗死的关系.方法选取59例急性脑梗死患者为脑梗死组,同期选择健康体检者30例为对照组,测定血清hs-CRP含量,应用颈动脉彩色多普勒超声检查颈动脉粥样硬化斑块及颈动脉内膜-中膜厚度（IMT）.同时对急性脑梗死患者血清hs-CRP水平与病情进行相关分析.结果血清hs-CRP脑梗死组为（5.96±1.52）mg/L高于对照组的（1.78±1.02）mg/L（t=15.383,P＜0.01）;颈动脉斑块检出率急性脑梗死组为77.97%,高于对照组的36.67%（x2=12.92,P＜0.01）;颈动脉IMT脑梗死组（1.18±0.17）mm高于对照组的（1.02±0.15）mm（t=4.544,P＜0.05）;神经功能缺损程度重型组血清hs-CRP水平[（15.68±1.45）mg/L]明显高于轻型组[（1.88±0.34）mg/L]和中型组[（4.16±1.39）mg/L]（t值为37.217和25.243,P＜0.01）.结论血清hs-CRP水平升高对急性动脉粥样硬化性脑梗死病变有临床意义,早期测定hs-CRP水平有助于评估急性脑梗死患者的病情及预后.

关键词：脑血管意外 C反应蛋白质颈动脉疾病

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奶牛子宫内膜炎病因学研究进展

畜牧与兽医 2005年第11期37卷 56-58页

作者：孔祥峰孔祥国胡元亮南京农业大学中兽医学研究室江苏南京210095 山东绿都安特动物药业山东济南250103

子宫内膜炎是奶牛的常发病之一,给奶牛业造成严重的经济损失。其直接病因是细菌、真菌、支原体、霉形体、病毒、寄生虫等病原微生物的感染。也可继发于某些疾病,特别是围产期疾病。此外,日粮营养价值不全,维生素、微量元素和矿物质的缺... 详细信息

子宫内膜炎是奶牛的常发病之一,给奶牛业造成严重的经济损失。其直接病因是细菌、真菌、支原体、霉形体、病毒、寄生虫等病原微生物的感染。也可继发于某些疾病,特别是围产期疾病。此外,日粮营养价值不全,维生素、微量元素和矿物质的缺乏或矿物质比例失调,也容易造成母牛的抗病力降低而发病;机体的激素水平、血液状态都与本病的发生、发展有一定关系。

关键词：奶牛子宫内膜炎传染性因素继发因素营养因素激素水平血液状态

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焦化煤气脱硫装置的改造与应用实践

辽宁化工 2023年第9期52卷 1331-1333页

作者：孔祥凤内江市博威能源有限公司四川内江642469

目前焦化脱硫工艺采用传统PDS脱硫技术,废液排放量约40 m^(3)·d^(-1),硫化氢出口排放浓度较高,后端煤气使用装置须增设烟气脱硫装置才能保证烟气达标排放,增加了整体脱硫成本。如采用传统PDS脱硫,势必对后端烟气脱硫的处理能力要求很高... 详细信息

目前焦化脱硫工艺采用传统PDS脱硫技术,废液排放量约40 m^(3)·d^(-1),硫化氢出口排放浓度较高,后端煤气使用装置须增设烟气脱硫装置才能保证烟气达标排放,增加了整体脱硫成本。如采用传统PDS脱硫,势必对后端烟气脱硫的处理能力要求很高,企业面临巨大的环保压力。简述了对现有PDS脱硫装置进行升级改造,不仅明显降低脱硫废液数量,同时降低净化气中硫化氢含量,将对企业平稳生产、环保达标具有重要意义。

关键词：脱硫废液 PDS脱硫装置环保

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中医护理记录单书写缺陷及对策

中国医学创新 2010年第6期7卷 84-85页

作者：孔祥凤山东省滕州市中医医院 277500

护理记录单是病历资料的重要组成部分,是护士对护理对象所进行的一系列活动的真实反映,也是医疗纠纷发生时的直接证据。护理记录单具有"四性",即客规真实性、连续完整性、准确及时性、规范统一性。如果护理记录失去了真实性和完整性,一... 详细信息

护理记录单是病历资料的重要组成部分,是护士对护理对象所进行的一系列活动的真实反映,也是医疗纠纷发生时的直接证据。护理记录单具有"四性",即客规真实性、连续完整性、准确及时性、规范统一性。如果护理记录失去了真实性和完整性,一旦出现医疗纠纷,势必造成举证困难甚至举证失败,给医院和个人造成不必要的损失。如何提高护理记录单的书写质量是护理管理者面临的重要课题。为此,护理部每日派专门负责护理文书质量考核成员对护理单进行检查,针对存在的问题采取相应对策,实现持续改进,使护理文书书写质量逐年提高。

关键词：护理记录单缺陷对策

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氯化钠溶液中铜丝尺寸效应对腐蚀行为的影响

物理化学学报 2008年第10期24卷 1907-1911页

作者：芦永红徐海波王佳孔祥峰姜晶中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室山东青岛266100

为了研究半径变化对铜丝腐蚀行为的影响,通过极化曲线和交流阻抗测试方法研究了半径为0.04-0.82mm的铜丝在自然通气的0.5mol·L-1NaCl(pH=7.4)溶液中的腐蚀行为.结果表明,当铜丝半径小于氧的扩散层厚度(0.56mm)时,随着半径减少,非线性... 详细信息

为了研究半径变化对铜丝腐蚀行为的影响,通过极化曲线和交流阻抗测试方法研究了半径为0.04-0.82mm的铜丝在自然通气的0.5mol·L-1NaCl(pH=7.4)溶液中的腐蚀行为.结果表明,当铜丝半径小于氧的扩散层厚度(0.56mm)时,随着半径减少,非线性扩散的存在加速了电化学反应的传质过程,其影响由慢到快迅速增大,使得受扩散过程控制的阴、阳极反应速率增大,铜丝的腐蚀电流密度显著增加.对铂丝、不锈钢丝的氧阴极还原反应过程研究也得到了类似的反应特征.上述现象表明铜丝腐蚀行为的尺寸效应具有一定的普遍性.

关键词：铜丝状电极腐蚀非线性扩散尺寸效应

脂蛋白(a)与脑梗死患者颈动脉粥样硬化、纤维蛋白原、D-二聚体的关系

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重庆医科大学学报 2011年第9期36卷 1101-1102页

作者：孔祥锋王萍陈明新疆医科大学第五附属医院神经内科乌鲁木齐830011

目的:探讨脑梗死患者脂蛋白(a)[Lipoprotein(a),LP(a)]与颈动脉粥样硬化、纤维蛋白原、D-二聚体关系。方法:入选185例脑梗死患者,根据颈动脉彩色超声多普勒检查结果,分为无斑块组、不稳定斑块组、稳定斑块组,测定血清脂蛋白(a)、纤维蛋... 详细信息

目的:探讨脑梗死患者脂蛋白(a)[Lipoprotein(a),LP(a)]与颈动脉粥样硬化、纤维蛋白原、D-二聚体关系。方法:入选185例脑梗死患者,根据颈动脉彩色超声多普勒检查结果,分为无斑块组、不稳定斑块组、稳定斑块组,测定血清脂蛋白(a)、纤维蛋白原、D-二聚体水平并进行分析。结果:不稳定斑块组血清LP(a)水平显著高于稳定斑块组,P<0.01;脑梗死颈动脉粥样硬化斑块患者LP(a)与血清纤维蛋白原、D-二聚体呈正相关。结论:LP(a)增高与颈动脉易损斑块密切相关,临床通过测定LP(a)水平预测脑梗死的发病风险,对预防脑梗死以及有效减少脑梗死复发具有重要意义。

关键词：脂蛋白(a) 纤维蛋白原 D-二聚体颈动脉粥样硬化