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- Wang, Shujuan; Guo, Wei; Gao, Fan; Wang, Yunkai; Gao, Yue
- RSC advances 2018 v.8 no.24 pp. 13205-13217
- iron oxides, etc ; adsorbents; adsorption; aqueous solutions; biochar; cost effectiveness; ion exchange; lead; magnetism; models; nitrates; pH; phosphates; porosity; pyrolysis; rice hulls; sorption isotherms; surface area; uranium; Show all 19 Subjects
- ... This paper discusses the sorption characteristics of Pb(ii) and U(vi) on magnetic and nonmagnetic rice husk biochars. The porosity, specific surface area, hydrophobility, and reusability of biochar were effectively improved (1–2 times) after magnetic modification. The optimum adsorption conditions were as follows: biochar loading was 0.4 g L⁻¹, pH value was 7.0, and anion strength of NO₃⁻ and PO₄³ ...
- Liu, Junhui; Kong, Long; Huang, Xueqiong; Liu, Min; Li, Liang
- RSC advances 2018 v.8 no.71 pp. 40804-40812
- iron oxides, etc ; Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorbents; adsorption; aqueous solutions; arsenic; carbonates; ions; magnetic fields; mixing; models; nanoparticles; nitrates; pH; sorption isotherms; sulfates; wastewater; Show all 18 Subjects
- ... In this study, magnetic sulfur-doped Fe₃O₄ nanoparticles (Fe₃O₄:S NPs) were applied as adsorbents for the removal of As(v). Fe₃O₄:S NPs were fabricated by a two-step route, which included low-temperature mixing and high-temperature sintering. The as-prepared Fe₃O₄:S NPs could effectively remove As(v) under a wide pH range of 2–10 and presented a high As(v) adsorption capacity of 58.38 mg g⁻¹, whic ...