Synthesis of N anozeolite NaA Using Barle y Husk Silica: Mercury Remo val f rom Babolrood River and In dustrial W astewate r

Barley husk silica (BHS) in a morphous p hase with ۸۵ % purity w as extracted from barley husk ash ( BHA). The BHS was u sed effectiv ely as a n ew source o f silica for the synthesis of nanozeolite NaA. The nanozeolite in pure phas e has been synthesi zed from a gel alumi nosilicate with high alk alinity at lo w temperature, without adding any organic additives. In this study, the application of synthesi zed NaA nanozeolite from barley h usk silica (BHS) for mercury removal from standard a nd real aqu eous solutions were investigated. The crystallization of NaA nanoz eolite from BHS was ch aracterized by X-ray diffraction (X RD), scanning electron microscopy (SEM), an d FTIR techniques. Mor eover, concentration of Hg۲+ ions in the aqu eous soluti ons was an alyzed by hydride g eneration at omic abso rption spectroscopy met hod. Efficie ncy of merc ury (II) adso rption from real solutions onto the nano-sized NaA zeolit was ۹۸%. The standard and real samples ex periments showed that NaA nanozeolite was capable of H g۲+ ions removal from th e aqueous solutions.

کلیدواژه ها:

Barley ، Mercury ، Nanozeolit e ، Hydride generation.