Comparative study of modified expanded perlite with hexadecyltrimethylammonium-bromide and gallic acid for boron adsorption
Yazarlar (2)
Prof. Dr. Pelin BARAN Yalova Üniversitesi, Türkiye
Gülhayat Nasün Saygılı
İstanbul Teknik Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Journal of Molecular Liquids (Q1)
Dergi ISSN 0167-7322 Dergi Bilgileri (2018)
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 03-2018
Kabul Tarihi – Yayınlanma Tarihi 01-03-2018
Cilt / Sayı / Sayfa 254 / 1 / 383–390 DOI 10.1016/j.molliq.2018.01.116
Makale Linki https://linkinghub.elsevier.com/retrieve/pii/S0167732217348328
UAK Araştırma Alanları
Ayırma İşlemleri
Özet
Expanded perlite-based novel adsorbents for boron adsorption were evaluated by the modification with hexadecyltrimethylammonium bromide (HDTMA) and gallic acid (GA). The samples were characterized by XRD, SEM and FTIR analysis. The adsorption of boron was examined at different HDTMA/GA concentrations, solution pH, initial concentration, temperature and contact time. Inert electrolyte effect on boron adsorption was also investigated. The optimum pH was found between pH 7–9. At the optimum pH level, boron adsorption capacities of HDTMA-perlite and GA-perlite were calculated as 833 mg/g and 2500 mg/g, respectively. The adsorption kinetic data was best described by pseudo second-order kinetic model for both HDTMA-perlite and GA-perlite samples. The adsorption process was found to be endothermic, and positive entropy values the increase of randomness at solid/liquid interface.
Anahtar Kelimeler
Batch adsorption | Boron | Gallic acid | HDTMA | Perlite