Results 191 to 200 of about 51,904 (265)

Molecular insights into the chemodiversity of dissolved organic matter and its interactions with the microbial community in eco-engineered bauxite residue.

Chemosphere, 2023
Dissolved organic matter (DOM) plays an important role in the biogeochemical function development of bauxite residue. Nevertheless, the DOM composition at the molecular level and its interaction with microbial community during soil formation of bauxite ...
Youfa Luo, Yulu Chen, Zuyan Wan, Dongran Zhou, Yu He   +4 more
semanticscholar   +1 more source

Polyethylenimine-modified chitosan materials for the recovery of La(III) from leachates of bauxite residue

Chemical Engineering Journal, 2020
The separation and recovery of rare earth elements (REEs) from leachates of bauxite residue has attracted increasing attention. Yet, the characteristics of bauxite residue leachates (low pH, low concentration of REEs, and co-existence of other trivalent ...
Feiping Zhao, Zongsu Wei, Richard Spinney   +2 more
exaly   +2 more sources

Bauxite residue (red mud) treatment: Current situation and promising solution

Science of the Total Environment
Bauxite residue, an industrial solid waste generated during alumina production, with over 80 % of bauxite residue worldwide being accumulated around alumina plants, which occupying a significant amount of land resources and posing a threat to the natural
Jun Luo, Guanghui Li
exaly   +2 more sources

Fluoride remediation from on-site wastewater using optimized bauxite nanocomposite (Bx-Ce-La@500): Synthesis maximization, and mechanism of F─ removal.

Journal of Hazardous Materials, 2022
Bauxite is a widely available Al-O-rich mineral with great potential for abating fluoride. However, low adsorption capacity, a narrow workable pH range, and a lack of clarity on the best removal mechanism hinder its application.
S. I. Alhassan, Hai-ying Wang, Yingjie He, Lvji Yan, Yuxin Jiang, Bichao Wu, Ting Wang, Haiyin Gang, Lei Huang, Linfeng Jin, Yongsheng Chen   +10 more
semanticscholar   +1 more source

Bauxites

2021
Bauxites are residually enriched rocks, mostly composed of Al-hydroxides (gibbsite, boehmite and diaspore), kaolinite, Fe-oxy-hydroxides and Ti-oxides, which form from intense lateritic weathering of aluminosilicate protoliths. Lateritic weathering and bauxite formation are generally favored by largely humid, tropical and subtropical climates. Bauxites
Mondillo, Nicola, Herrington, Richard, Boni, Maria   +2 more
openaire   +2 more sources

Boosting the use of bauxite residue (red mud) in cement - Production of an Fe-rich calciumsulfoaluminate-ferrite clinker and characterisation of the hydration

Cement and Concrete Research, 2021
In the present work, calciumsulfoaluminate-ferrite clinker was produced using 35 wt% of bauxite residue in combination with alumina, clay, limestone and gypsum.
T. Hertel, A. V. D. Bulck, S. Onisei, P. Sivakumar, Y. Pontikes   +4 more
semanticscholar   +1 more source

Insights into variations on dissolved organic matter of bauxite residue during soil-formation processes following 2-year column simulation.

Environmental Pollution, 2021
Bauxite residue, an industrial alkaline solid waste, has a low organic carbon content which hinders plant growth. Dissolved organic matter (DOM) drives many biogeochemical processes including carbon storage and soil formation in soils. Input of exogenous
Sheng-guo Xue, Zheng Liu, Jiarong Fan, Rui Xue, Yingbo C. Guo, Wei Chen, W. Hartley, Feng Zhu   +7 more
semanticscholar   +1 more source

Effect of calcined bauxite powder or aggregate on the shrinkage properties of UHPC

, 2021
Commonly used internal curing (IC) agents (super absorbent polymers or lightweight aggregate) to mitigate the higher levels of autogenous shrinkage in UHPC could possibly lead to a negative effect on the mechanical properties of concrete due to the ...
Yalin Liu, Ya Wei
semanticscholar   +1 more source

Straw addition increases enzyme activities and microbial carbon metabolism activities in bauxite residue.

Journal of Environmental Science, 2022
Recovery of microbial functions is one of the critical processes in the nutrient cycling of bauxite residue for improving revegetation. Straw is considered to be effective to increase microbial diversity and drive the development of the microbial ...
Hao Wu, Wei Sun, Feng Zhu, Yifan Jiang, Shiwei Huang, Johnvie Bayang Goloran, Sheng-guo Xue   +6 more
semanticscholar   +1 more source

Biotechnological trends and market impact on the recovery of rare earth elements from bauxite residue (red mud) – A review

, 2021
The growing demand for rare earth elements (REEs) confronted with a parallel supply risk, draws major interest to utilize secondary resources bearing higher REE content than the primary resources.
S. Panda, R. B. Costa, Syed Sikandar Shah, Srabani Mishra, D. Bevilaqua, A. Akcil   +5 more
semanticscholar   +1 more source