Open AccessThe Synthesis of silica nanoparticles from Vietnamese rice husk - Application for adsorption of heavy metals in industrial wastewater
Author(s) -
Đào Thi Băng Tâm,
Nguyen Do,
Lưu Kiến Quốc,
Hà Thúc Chí Nhân
Publication year - 2020
Publication title -
khoa học và công nghệ: tự nhiên
Language(s) - English
Resource type - Journals
ISSN - 2588-106X
DOI - 10.32508/stdjns.v4i4.915
Subject(s) - husk , adsorption , nanomaterials , environmental remediation , wastewater , chemistry , environmental chemistry , metal ions in aqueous solution , nuclear chemistry , heavy metals , metal , pollutant , contamination , materials science , environmental engineering , environmental science , nanotechnology , organic chemistry , ecology , botany , biology
Heavy metals are known to be toxic, even at low content (ppm), for living organisms[1,2]. The presence of heavy metals and other pollutants in water continues to be a major concern and the removal of such contaminants is considered as an important solution for environmental remediation[3,4]. In this paper, we study the ability adsorption of Pb2+ and Cd2+ heavy ionic metal on silica nanomaterials which was extracted and purified from Vietnamese rice husk. The structure of the materials was investigated by X-ray diffraction (XRD) and FT-IR spectroscopy. By Adsorption Atomic Spectroscopy (AAS) analysis, the results have demonstrated the time taken for attaining equilibrium adsorption is about 1.5 hours for both cases, and the adsorption capacity of Pb2+ and Cd2+ on silica are 21 and 24 mg/L, respectively.