CAJ | 학술논문

铬是现代工业生产排放过程中常见的污染物质，通常存在于水体和土壤等介质中，对人类和其他生物会造成危害。该文对层状双金属氢氧化物（ LDHs）类材料去除水中铬的研究进展进行了总结。比较了不同LDHs类材料及改性后LDHs类材料去除铬的机制、影响因素及焙烧、复合等手段改性对LDH的结构及吸附性能的改变。改性后的LDHs材料的物理特性（如比表面积等）得到提升，同时吸附性能也得到改善。 LDHs类材料吸附铬的主要机制为离子交换、溶解再沉淀、重构等。
락시현대공업생산배방과정중상견적오염물질，통상존재우수체화토양등개질중，대인류화기타생물회조성위해。해문대층상쌍금속경양화물（ LDHs）류재료거제수중락적연구진전진행료총결。비교료불동LDHs류재료급개성후LDHs류재료거제락적궤제、영향인소급배소、복합등수단개성대LDH적결구급흡부성능적개변。개성후적LDHs재료적물리특성（여비표면적등）득도제승，동시흡부성능야득도개선。 LDHs류재료흡부락적주요궤제위리자교환、용해재침정、중구등。
Chromium is a common pollutant in water, soil and other media in nature, which is discharged from modern industrial processes.The Science and technologies for the abatement of chromium are greatly concerned, because the excess intake of chromium leads harm to organisms.In this paper, the recent research progress of layered double hydroxides ( LDHs ) used as sorbents in removing chromium and the adsorption mechanisms were summarized.The mechanism and influencing factors of LDHs and modified LDHs were also compared.Adsorption properties of calcinated LDH and composites of LDHs with other materials were introduced.Ion exchange, dissolution and precipitation, reconstruction are the main adsorption mechanism of LDHs on Cr removal.