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改性粉煤灰对亚甲蓝的吸附及再生性能研究 夏新奎1,曹书勤2,朱家春2,肖伟2 (1.信阳农业高等专科学校,河南,信阳,464000;2.信阳师范学院,河南,信阳,464000) 摘要:用浓度为2.0mol/L的盐酸,在常温,酸灰质量比为1:3的条件下对粉煤灰进行改性,改性后作为实验废水中亚甲蓝的吸附剂.当改性粉煤灰用量为50g/L,温度为30℃,pH值为8时,亚甲蓝的去除率可达98%左右.用0.5mol/L的HCl对吸附后的粉煤灰进行再生实验,效果良好.再生粉煤灰对亚甲蓝的去除率仍能达到96%左右. 关键词:酸改性粉煤灰; 实验废水; 吸附; 再生; acid modified fly ash; laboratorial wastewater; adsorption; regeneration; [全文内容正在添加中] ......
, China (Received 2002-01-30)摘 要:<正> The stripping and regeneration of the loaded organic phase of phosphorous mixer extractant (PPD) were studied... agent is 1:1. The organic phase can be recycled to use after regeneration with HC1. The parallel contrast experiments with D2EHPA (di-2-ethyl hexyl phosphoric acid) were carried out under the same......
Central Hospital摘 要:To search suitable scaffolds for periodontal tissue regeneration, different ratios of tricalcium phosphate/chitosan(TCP/chitosan) scaffolds... into athymic mice. The state of periodontal tissue regeneration was detected after 4 weeks. As the ratio of TCP increased, TCP/chitosan scaffolds accelerated HPLCs proliferation significantly higher than......
Basic Mechanical Properties and Microstructural Analysis of Recycled Concrete陈宝璠摘 要:The regeneration aggregate, natural aggregate, P·O42.5 R Portland... regeneration rates to prepare recycled concrete (RC). The influences of different renewable aggregate ratios on the basic RC replacement mechanical properties, uniaxial compression stress and strain curve......
Research Center, Wuhan University of Technology摘 要:Peripheral nerve regeneration using a novel nerve conduit (PRGD/PDLLA/β TCP/NGF) was evaluated, which was made... with that of PRGD/PDLLA/β-TCP, PDLLA and autograft in terms of nerve regeneration across a gap. Both of biodegradablity and cell-biocompatibility of the novel nerve conduit were evaluated in vitro. The results......
regeneration may extend the repair time.Poor osteoinduction and osseointegration of bone implants can lead to fibrous layer at the host/关键词:......
壳聚糖/羟基磷灰石引导组织再生膜材料的制备和性能 鲍扬波1,沈家骢2,胡巧玲2,陈亮2 (1.浙江理工大学材料与纺织学院,杭州,310018;2.浙江大学高分子复合材料研究所,教育部高分子合成与功能构造重点实验室,杭州,310027) 摘要:用生物矿化交替沉积法成功在CS基质膜表面构建HA涂层,并进行了表征.结果表明,HA含量随着沉积循环数增加而增加,且在4个循环后基本达到饱和,饱和含量为8.8%;随着沉积循环数增加HA由均一颗粒状转变为无规则平板状;拉伸强度由纯CS膜的68.6 MPa降低到沉积5个循环后的46.9 MPa.控制沉积数可调控HA的含量,形貌和力学强度,以满足引导组织再生......
纳米羟基磷灰石/壳聚糖复合膜的制备和表征 程先苗1,左奕1,张利1,李玉宝1,廖建国1,李吉东1 (1.四川大学,分析测试中心,四川,成都,610064;2.四川大学,化学学院,四川,成都,610064) 摘要:以壳聚糖(chitosan,CS)为高分子相,纳米羟基磷灰石(nano-hydroxyapatite,n-HA)为无机相,采用溶液共混和真空下溶剂挥发的方法制备了n-HA/CS复合膜,通过SEM,XRD,FTIR,接触角及力学性能等测试对此复合膜进行分析和表征.结果表明,复合膜具有非对称结构,上表面组分主要是CS,下表面组分是n-HA和CS复合体,并在底部形成了一层致密层,中间是......
聚乙烯醇/丝素蛋白引导骨组织再生膜材料的制备和性能 江建明1,郭悦文1,李玲琍1,李光1 (1.东华大学材料科学与工程学院,上海,201620) 摘要:通过聚乙烯醇(PVA)与丝素(SF)的物理共混制备出PVA/SF共混膜.由SEM观察到SF以100~200nm的球粒形状均匀地分散在PVA中,拉伸实验表明当SF添加量小于40%时,共混膜的拉伸强度和杨氏模量均随SF添加量的增加而提高.采用交互浸渍法在PVA/SF膜上生长羟基磷灰石,经相同交互浸渍周期,在膜表面生成的HA随SF的增加而增加,说明SF具有更强的引导骨组织生长能力. 关键词:聚乙烯醇; 丝素蛋白; 共混; 交互浸渍法; 羟基磷......
:TE992.1 文献标志码:A 文章编号:1672-7207(2011)03-0841-07 Regeneration of modified activated carbons used... and XPS techniques. The activity evaluation of COS hydrolysis over the catalyst was conducted in a fixed-bed reactor. The regeneration performance of the used Fe-Cu/AC catalyst was investigated using......
