http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Yuncong C. Li (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Biochar-supported nZVI (nZVI/BC) for contaminant removal from soil and water: A critical review
Wang, Shengsen,Zhao, Mingyue,Zhou, Min,Li, Yuncong C.,Wang, Jun,Gao, Bin,Sato, Shinjiro,Feng, Ke,Yin, Weiqin,Igalavithana, Avanthi Deshani,Oleszczuk, Patryk,Wang, Xiaozhi,Ok, Yong Sik Elsevier 2019 Journal of hazardous materials Vol.373 No.-
<P><B>Abstract</B></P> <P>The promising characteristics of nanoscale zero-valent iron (nZVI) have not been fully exploited owing to intrinsic limitations. Carbon-enriched biochar (BC) has been widely used to overcome the limitations of nZVI and improve its reaction with environmental pollutants. This work reviews the preparation of nZVI/BC nanocomposites; the effects of BC as a supporting matrix on the nZVI crystallite size, dispersion, and oxidation and electron transfer capacity; and its interaction mechanisms with contaminants. The literature review suggests that the properties and preparation conditions of BC (e.g., pore structure, functional groups, feedstock composition, and pyrogenic temperature) play important roles in the manipulation of nZVI properties. This review discusses the interactions of nZVI/BC composites with heavy metals, nitrates, and organic compounds in soil and water. Overall, BC contributes to the removal of contaminants because it can attenuate contaminants on the surface of nZVI/BC; it also enhances electron transfer from nZVI to target contaminants owing to its good electrical conductivity and improves the crystallite size and dispersion of nZVI. This review is intended to provide insights into methods of optimizing nZVI/BC synthesis and maximizing the efficiency of nZVI in environmental cleanup.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Aggregation and passivation of nZVI can be alleviated by surfactants and doping methods. </LI> <LI> BC hinders corrosion and improves the dispersion and electron transfer of nZVI. </LI> <LI> Properties of nZVI depend on those of the BC, feedstock and pyrogenic temperature. </LI> <LI> BC enhances electron transfer from nZVI to the contaminants due to the presence of quinone and graphene moieties. </LI> <LI> nZVI/BC shows strong ability to remove HMs, nitrates, and organic contaminants in soil and water. </LI> </UL> </P>
-
Jian Zhang,Ruidong Yang,Rong Chen,Yuncong C. Li,Yishu Peng,Xuefeng Wen 한국식품과학회 2019 Food Science and Biotechnology Vol.28 No.6
The concentrations of twenty-four elements intwenty-five peppers from three cultivated regions inGuizhou Province (China) were analyzed. The chemometricdata processing, including one-way analysis ofvariance, principal component analysis, linear discriminantanalysis (LDA), and orthogonal partial least squares discriminantanalysis (OPLS-DA) were executed to differentiatethe peppers. Consequently, the contents of 16elements (Arsenic, Ba, Cu, Co, Cr, Ni, Pb, Sn, Sb, Mo, Sr,Y, Zn, Ca, P, and Fe) were significantly different amongthe three regions (p\0.05). The correct discriminationrates of 25 peppers were 92.0% for LDA and 96.0% forOPLS-DA. The variable importance in the projection (VIP)values were ranged from 1.063 to 1.262 for seven elements(Tin, Fe, Zn, Y, Cr, Sr, and Mo) indicating that they playedan important role for the geographical origin traceability ofpepper. To sum up, multi-element concentrations togetherwith chemometric data-processing can be promising for thegeographical origin differentiation of pepper.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
