Results 131 to 140 of about 186 (158)

The sorption interactions of humic acid onto Beishan granite

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2015
Abstract To explore the sorption phenomenon and mechanism between humic acid (HA) and Beishan granite (BsG), the influence of factors such as pH, contact time, ionic strength, temperature, HA concentration and solid-to-liquid ratio were investigated using the batch technique.
Chunli Wang, Xiaoyu Yang, Chun Li, Chunli Liu   +3 more
openaire   +1 more source

Migration study of iodine in Beishan granite by a column method

Journal of Radioanalytical and Nuclear Chemistry, 2013
The fate and migration behavior of radionuclides in environment are influenced by a series of physical and chemical processes such as advection, hydrodynamic dispersion (including mechanical dispersion and molecular diffusion), retention, chemical reaction and so on.
T. Chen, C. Li, X. Y. Liu, L. H. Wang, Z. Zheng, X. Y. Wang, C. L. Liu   +6 more
openaire   +1 more source

Migration of 75Se(IV) in crushed Beishan granite: Effects of the iron content

Journal of Hazardous Materials, 2017
The diffusion of selenite (labeled with 75Se) in compacted Beishan granite (BsG) was investigated using the in-diffusion capillary method at pH values from ∼2.0 to ∼11.0 under oxic and anoxic conditions. The results indicate that the apparent diffusion coefficient (Da) values of selenite in BsG always reached the minimum at approximately pH 5 ...
Jiangang, He, Bin, Ma, Mingliang, Kang, Chunli, Wang, Zhe, Nie, Chunli, Liu   +5 more
openaire   +2 more sources

Sorption of iodine on Beishan granite: effect of speciation and humic acid

Journal of Radioanalytical and Nuclear Chemistry, 2018
Sorption of iodine on Beishan granite was studied by batch method. Great difference exists in the sorption behaviors of I− and IO3−. Under acidic condition, the sorption of IO3− improves dramatically, and IO3− could partly convert to I−. However, the sorption of I− is close to zero at all studied pH.
Yaxiong Zou, Tao Chen, Gaocai Yuan, Kui Zhang   +3 more
openaire   +1 more source

Hydraulic properties of Beishan granite after different high temperature treatments

Bulletin of Engineering Geology and the Environment, 2021
Disposal of high-level radioactive waste (HLW) is one of the most challenging subjects across the world. And it is reported that China intends to build an HLW repository in granite strata in Beishan, Gansu Province. In this research, to explore hydraulic properties of Beishan granite considering thermal damage, specimens were heated up to 300, 400, and
Z. H. Wang, T. Su, Heinz Konietzky, Y. L. Tan, G. L. Zhou   +4 more
openaire   +1 more source

Characterizing the mechanical tensile behavior of Beishan granite with different experimental methods

International Journal of Rock Mechanics and Minings Sciences, 2014
Abstract This work investigates with different test methods the mechanical tensile behavior of Beishan granite, especially the damage evolution process. The granite is taken from the Beishan site, a potential Chinese area for high-level radioactive waste repository.
Chunping Wang
exaly   +2 more sources

Experimental Investigation on Microstructure and Permeability of Thermally Treated Beishan Granite

Journal of Testing and Evaluation, 2019
Abstract A good understanding of thermal effect on physical properties (especially the permeability) of host rock is essential for a high-level radioactive waste (HLW) deep geological repository. In this study, we carried out comprehensive tests (permeability measurement, p-wave velocity measurement, mercury intrusion test, and nuclear ...
Shiwan Chen, Guibin Wang, Shuangying Zuo, Chunhe Yang   +3 more
openaire   +1 more source

Influence of γ-irradiation and oxygen conditions on the diffusion of I-125 in crushed Beishan granite

Applied Radiation and Isotopes, 2020
The diffusion of iodine (labeled with 125I-) in compacted Beishan granite (BsG) was investigated using the in-diffusion capillary method at pH ~2.0 to ~11.0 under oxygen and irradiation conditions. With the advantages of simple and easy operation of the capillary diffusion devices, this work makes a preliminary investigation on the irradiation ...
Jiangang, He, Yao, Li, Yin, Su, Junqiang, Yang, Xiaolin, Hou, Wangsuo, Wu, Keliang, Shi   +6 more
openaire   +2 more sources

Thermal conductivity of thermally damaged Beishan granite under uniaxial compression

International Journal of Rock Mechanics and Mining Sciences, 2019
Abstract Investigations of the thermal conductivity of thermally damaged Beishan granite under uniaxial compression were conducted. Rectangular prism specimens preconditioned at 105 °C were heated at different temperatures (400, 550 and 650 °C) and then cooled to room temperature (27 °C) for testing.
X.G. Zhao, H.R. Xu, Z. Zhao, Z. Guo, M. Cai, J. Wang   +5 more
openaire   +1 more source

An improved strain-softening model for Beishan granite considering the degradation of elastic modulus

Arabian Journal of Geosciences, 2020
During the failure process, granite always exhibits strain-softening behavior and confining pressure-dependent effect. Based on triaxial cyclic loading and unloading compression tests, the evolutions of cohesive strength, internal friction angle, and elastic modulus with axial plastic strain and confining pressure were obtained.
Ming Min, Bin-Song Jiang, Meng-Meng Lu, Jing-Kui Long, Qiang Zhang   +4 more
openaire   +1 more source