Pb+2 Adsorption from Water by Carboxy Mesoporous Carbon in Acidic Condition
- سال انتشار: 1387
- محل انتشار: دومین کنگره بین المللی علوم و فناوری نانو
- کد COI اختصاصی: ICNN02_432
- زبان مقاله: انگلیسی
- تعداد مشاهده: 1020
نویسندگان
Research Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University
Research Institute of Petroleum Industry, Tehran
Research Laboratory for Advanced Separation Processes, Department of Chemical Engineering, Iran
چکیده
Lead (Pb) is one of the toxic heavy metals and an important contaminant in aquatic environments. Its mobilization in the environment has greatly increased as a result of major anthropogenic emissions and poor waste disposal. Pb exists in various forms depending on environmental conditions. At low pH, Pb dissociates and exists mainly as a mobile and toxic Pb2+ form. Humans acquire Pb through ingestion or inhalation of Pb-contaminated food, air and water. The maximum allowable limit of total Pb in drinking water considered safe by the World Health Organization is 50 ppb, whereas less than 15 ppb is adopted by the United StatesEnvironmental Protection Agency. Various techniques have been developed to remove Pb2+ from aquatic environment [1, 2]. These include applications of chemical and biological materials, either by metabolically mediated or physico-chemical pathways of uptake. Manytypes of biological materials including cyanobacteria, algae, yeast, and aquatic plants have beenused for the removal of metals from wastewater. Adsorption treatment provides a simple and universal approach to effectively removing heavy metal pollutants from the aquatic environment [3-5]. Mesoporous carbon materials with ordered pore structure, high pore volume, high specific surface area, and tunable pore diameters can be prepared using the hard template method. Due to its open pore structure and mesoporous properties, mesoporous carbon provides marked advantages over typical activated carbon in the adsorption and diffusion process. In the present communication, we report the adsorption of Lead on carboxy ordered mesoporous Carbon.کلیدواژه ها
مقالات مرتبط جدید
اطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.