ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    facet.materialart.
    Unknown
    Enhancement of dewatering performance of digested paper mill sludge by chemical pretreatment (2016)
    Institute of Physics (IOP)
    Details
    Publication Date: 2016-09-03
    Description: The wide application of anaerobic digestion (AD) for waste sludge results in a huge amount of digested sludge, while the appropriate reuse of digested sludge depends on effective solid-liquid separation. Thus, chemical (acid/alkali) pretreatment effects on dewaterability of digested paper mill sludge (DPMS) for better downstream reuse based on enhanced solid- liquid separation were investigated in this research. The dewatering properties of paper mill sludge (PMS) were also investigated to elucidate the impact of AD on sludge dewaterability. The results indicated that a higher DPMS dewaterability was noted with acid pretreatment (pH5). A 41.37% moisture content and 74.41% dewatering efficiency were determined for DPMS after acid (pH5) pretreatment within 25 min. In addition, a 7.13 mg•g-1 VSS of extracellular polymeric substances (EPS) and 101.50 μm of average particle size were observed. It was also observed that both EPS concentrations and particle sizes were key parameters in...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 2
    facet.materialart.
    Unknown
    A study of factors affecting properties of AM/AMPS/NVP terpolymeric microspheres prepared by inverse suspension polymerization (2015)
    Institute of Physics (IOP)
    Details
    Publication Date: 2015-12-11
    Description: Terpolymeric microspheres were synthesized by the inverse suspension polymerization of functional monomers including AMPS, NVP, and AM. The morphology and size of the obtained microspheres were measured by scanning electron microscopy (SEM) and optical microscopy. Furthermore, the swelling performances of the obtained microspheres were measured with alaser particle analyzer (LPA), and the thermal stability of the microspheres obtained was measured by differential thermal analysis (DSC-TG) and high temperature experiments involving microsphere/water dispersion. The results revealed that the extreme value of the microsphere size distribution decreased from 280 μm to 20 μm as the stirring rate increased from 175 rpm to 500 rpm. At temperatures below 25°C, the maximum achieved swelling ratio of the microspheres was 21, and the thermal stability of the terpolymer microspheres was significantly higher than that of the dipolymer microspheres. The terpolymer/water dispersions were kept a...
    Print ISSN: 1757-8981
    Electronic ISSN: 1757-899X
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Institute of Physics (IOP)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 3
    facet.materialart.
    Unknown
    Hydrothermal alteration mapping using ASTER data in Baogutu porphyry deposit, China (2014)
    Institute of Physics (IOP)
    Details
    Publication Date: 2014-03-19
    Description: Remote sensing plays an important role in mineral exploration. One of its proven applications is extracting host-rock lithology and alteration zones that are related to porphyry copper deposits. An Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) was used to map the Baogutu porphyry deposit alteration area. A circular alteration mineral zoning pattern was clearly observed in the classification result of potassic, phyllic, argillic, propylitic zones. The potassic is characterized by biotite and anhydrite with an absorption feature centered at 1.94 and 2.1um. The phyllic zone is characterized by illite and sericite that indicates an intense Al-OH absorption feature centered at 2.20um. The narrower argillic zone including kaolinite and alunite displays a secondary Al-OH absorption feature at 2.17 um. The mineral assemblages of the outer propylitic zone are epidote, chlorite and calcite that exhibit absorption features at 2.335um.The performance of Principal Co...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 4
    facet.materialart.
    Unknown
    Adsorption properties of rare earth soils on Ammonium Nitrogen (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-11-06
    Description: The in-situ leaching of ionic rare earth minerals often causes serious nitride pollution in the mining area and surrounding areas. In this paper, the rare earth soil in the Zu Dong mining area of Long Nan, Gan Zhou city, was used as the research object. Through batch equilibrium adsorption tests, the adsorption properties of ammonium nitrogen in different sizes of rare earth soils, the adsorption dynamics and thermodynamics of ammonium nitrogen under different concentrations of ammonium sulfate solution, and the effect of the solution flow rate and concentration in the soil column under dynamic conditions on the adsorption of ammonium on the soil was systematically studied. The results showed that in different diameters of rare earth soils, the adsorption capacity was: clay (within 0.074 mm) 〉 fine sand (range 0.074 to 0.25 mm) 〉 sand (beyond 0.25 mm) 〉 original soil (12.37% clay, 43.9% sandy soil, and 31.56% fine sand), indicating that the clay in the original soil pla...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 5
    facet.materialart.
    Unknown
    Effect of ultrasonic on the performance of concentrate in high loaded bioflocculation-membrane reactor (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-11-07
    Description: In this work, the performance of the concentrates such as settleability, particle size distribution and filterability at different ultrasonic treatment was investigated and compared in the high loaded bioflocculation-membrane reactor for actual municipal wastewater treatment. The results indicated that the ultrasonic treatment can effectively improve the settleability of the concentrate. Moreover, the concentrate treated with the different ultrasonic, the particles in the concentrate were broken and distributed in small size interval. What needed to be noticed that when the concentrate with ultrasonic intensity of 0.6 W/mL treatment, found that membrane filtration resistance was highest.
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 6
    facet.materialart.
    Unknown
    Radioactivity of seawater nearby Daya Bay Nuclear Power Station (2017)
    Institute of Physics (IOP)
    Details
    Publication Date: 2017-09-01
    Description: The radioactivity of seawater nearby Daya Bay NPPs was introduced in this paper. The average annual concentrations of 90 Sr and 137 Cs ranged from 0.55∼2.38 and 0.81∼4.68 Bq·m -3 respectively during 1993∼2015. The average annual concentration range of 3 H is 0.8∼7 Bq·L -1 . The concentration range of 14 C is 7.6—8.6 Bq·m -3 , and the concentration of 3 H and 14 C is higher than that of the reference location or the background, but with no cumulative effect. The concentrations of 90 Sr and 137 Cs in seawater have no obvious relationship with the nuclear liquid effluent discharging. The average concentrations of 238 U and 232 Th were 24.6±10.6 and 18.1±7.5 Bq·m -3 respectively during 2000∼2008.
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 7
    facet.materialart.
    Unknown
    The Study of Micro-Pressure Inner-Loop Bioreactor Oxygen Mass Transfer Characteristics (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-03-24
    Description: The oxygen mass transfer characteristics in a Micro-Pressure Inner-Loop bioreactor (MPR) were studied by clean water oxygenation experiment, the results show that when the aeration adopt by 0.1, 0.2, 0.4, 0.6 m 3 ·h - 1, respectively, the oxygen mass transfer coefficient KLa(20) in the reactor increases with the increase of the aeration. K La(20) shows a good linear correlation with the aeration. The rate is 0.2128 h·m - 3·min - 1 and the correlation coefficient R=0.993. However, the trend of E O2 increases first and then decreases with the increase of aeration. When the aeration increased to 0.4 m 3 ·h - 1, the E O2 reaches the maximum. If aeration increases constantly, E O2 begin to decrease excessive aeration may lead to an increase in energy waste during reactor operation.
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 8
    facet.materialart.
    Unknown
    Analysis on the Spatial Difference of Bacterial Community Structure in Micro-pressure Air-lift Loop Reactor (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-02-22
    Description: In order to reveal the spatial difference of the bacterial community structure in the Micro-pressure Air-lift Loop Reactor, the activated sludge bacterial at five different representative sites in the reactor were studied by denaturing gradient gel electrophoresis (DGGE). The results of DGGE showed that the difference of environmental conditions (such as substrate concentration, dissolved oxygen and PH, etc.) resulted in different diversity and similarity of microbial flora in different spatial locations. The Shannon-Wiener diversity index of the total bacterial samples from five sludge samples varied from 0.92 to 1.28, the biodiversity index was the smallest at point 5, and the biodiversity index was the highest at point 2. The similarity of the flora between the point 2, 3 and 4 was 80% or more, respectively. The similarity of the flora between the point 5 and the other samples was below 70%, and the similarity of point 2 was only 59.2%. Due to the different contribution of di...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 9
    facet.materialart.
    Unknown
    Study on hydrothermal synthesis dynamics of nanoscale xonotlite fibers (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-01-31
    Description: The xonotlite crystals were synthesized via the hydrothermal synthesis manner from CaO and SiO 2 as the raw materials with their Si/Ca molar ratio of 1.0. Hydrothermal synthesis dynamics of nanoscale xonotlite fibers was explored by masterly measuring the electrical conductivities and the calcium concentrations of product slurries synthesized at various reaction temperature in this paper. The results indicated that the calculated values of the products’ quality at various reaction temperatures were consistent with the measured values. Based on chemical reaction kinetic, using fourth-order Runge-Kutta method, spline interpolation and least-squares fitting method, the dynamic relationship of xonotlite fibers synthesized via hydrothermal synthesis process is of ##IMG## [http://ej.iop.org/images/1757-899X/284/1/012021/MSE_284_1_ieqn1.gif] {$-{dc}_{A}/{dt}={kc}_{A}^{4/5}$} .
    Print ISSN: 1757-8981
    Electronic ISSN: 1757-899X
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Institute of Physics (IOP)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 10
    facet.materialart.
    Unknown
    Comparative dynamics analysis on xonotlite spherical particles synthesized via hydrothermal synthesis (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-02-03
    Description: The xonotlite crystals were synthesized via the hydrothermal synthesis manner from CaO and SiO 2 as the raw materials with their Si/Ca molar ratio of 1.0. Comparative dynamics analysis on xonotlite spherical particles synthesized via hydrothermal synthesis process was explored in this paper. The accuracy of the dynamic equation of xonotlite spherical particles was verified by two methods, one was comparing the production rate of the xonotlite products calculated by the dynamic equation with the experimental values, and the other was comparing the apparent activation energies calculated by the dynamic equation with that calculated by the Kondo model. The results indicated that the production rates of the xonotlite spherical particles calculated by the dynamic equation were in good agreement with the experimental values and the apparent activation energy of the xonotlite spherical particles calculated by dynamic equation (84 kJ·mol -1 ) was close to that calcula...
    Print ISSN: 1757-8981
    Electronic ISSN: 1757-899X
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Institute of Physics (IOP)
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...