م مقاله کنفرانسی سال ۱۳۹۶ ۶۰۲ مشاهده REMOVAL OF PONCEAU4R DYE FROM AQUEOUS SOLUTIONS BY NOVEL ADSORBENTS PREPARED FROM PEANUT SHELL AND Fe3O4 NANOPARTICLES Peanut shellFe3O4 nanoparticlesPonceau4R dye