2021年10月15日 · The systematic studies demonstrated that the biogenic CMC-FeS complex had high dispersive capacity with 0.0005 CMC-to-FeS molar ratio and performed better to remove U(VI) than chemically synthesized CMC-FeS with an optimal dosage of 0.10 g/L FeS.

2021年3月23日 · The stabilization of CMC (CMC-FeS) and supporting of biochar (CMC-FeS@biochar) reduced the toxicity of FeS, as evidenced by increasing the growth of K. variicola H12 from OD 1.39 for FeS...

在粗砂、中砂与细砂介质中，3种FeS的迁移能力从强到弱依次为CMC-FeS、Alb-FeS、Nano-FeS；在3种介质中CMC-FeS的最大迁移距离分别是Nano-FeS的6.1倍、6.4倍和3.4倍，而Alb-FeS与Nano-FeS相比迁移性没有明显提高。

本研究评估了三种多糖稳定剂 (羧甲基纤维素钠 (CMC)、羧甲基淀粉钠 (CMS)和一种水溶性淀粉) 用于稳定FeS 纳米颗粒的有效性,并测试了相应稳定化纳米颗粒在水和土壤中固定Cd 2+ 的性能。 使用 0.010 wt% CMC、0.025 wt% CMS 或0.065 wt%淀粉可获得完全稳定的FeS 纳米颗粒 (100 mg/L FeS)。 CMC-FeS 表现出较高的zeta 负电位,淀粉-FeS 保持中性,而CMS-FeS 则表现出中等负电位。 CMCFeS 对Cd 2+ 的吸附速率最快,吸附容量也最高。 当用100 mg/L CMC-FeS …

2024年7月15日 · Encapsulating CMC stabilized nano-FeS with Mg (OH) 2 shell has potential for in situ groundwater remediation. Nanoparticulate iron sulfide (nano-FeS) is a highly effective and environmentally-friendly reducing agent for decontamination.

2014年2月25日 · Iron sulfide (FeS) nanoparticles were prepared with sodium carboxymethyl cellulose (CMC) as a stabilizer, and tested for enhanced removal of aqueous mercury (Hg 2+). CMC at ≥0.03 wt % fully stabilized 0.5 g/L of FeS (i.e., CMC-to-FeS molar ratio ≥0.0006).

本研究考虑了老化、pH 值和腐植酸 (HA) 对厌氧条件下模拟地下水中羧甲基纤维素稳定的硫化亚铁纳米粒子 (CMC-FeS) 的物理稳定性和汞吸收的影响。在FeS表面涂覆带负电荷的CMC提高了FeS颗粒的稳定性。

2024年6月13日 · In this study, we evaluated effectiveness of three polysaccharide stabilizers (sodium carboxymethyl cellulose (CMC), sodium carboxymethyl starch (CMS), and a water-soluble starch) for stabilizing FeS nanoparticles, and tested the stabilized nanoparticles for immobilization of Cd 2+ in water and soil.

2022年3月5日 · Herein, carboxymethyl cellulose stabilized ferrous sulfide@extracellular polymeric substance (CMC-FeS@EPS) was developed to remove hexavalent chromium (Cr (VI)) from water. CMC-FeS@EPS (98.00%) exhibited excellent removal efficiency of 40 mg/L Cr (VI) than those of FeS (57.35%) and CMC-FeS (68.60%).

FeS nanoparticles with uniform size have been prepared through a facile route using (sodium carboxymethyl cellulose) CMC as soft template. The nanoparticles are about 4-6 nm by observation of transmission electron microscopy (TEM). The CMC template could also stabilize the FeS nanoparticles and resist aggregation.