A novel geopolymer supported biomass from immobilization design to applications for toxic cadmium uptake


AKAR T., Çınar H., SAYIN F., Tunali Akar S., KARA İ., ÇELİK S., ...Daha Fazla

Biomass and Bioenergy, cilt.215, 2026 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 215
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1016/j.biombioe.2026.109601
  • Dergi Adı: Biomass and Bioenergy
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, Compendex, Environment Index, Geobase, INSPEC
  • Anahtar Kelimeler: Batch, Column, Geopolymer, Heavy metal, Microbial immobilization, Sorptive treatment
  • Eskişehir Osmangazi Üniversitesi Adresli: Evet

Özet

Because of cadmium's extreme toxicity, living systems may be at serious risk from its presence in the water. The goal of this research was to create a hybrid sorbent able to sorb cadmium with high performance, sustainability, and affordability. A unique geopolymer-Neurospora biomass composite (JEONS20) was designed for the first time, as a sustainable and synergistic sorbent material by using the passive immobilization technique. A comprehensive analysis of the material's ability to remove toxic Cd2+ was reported. The process was shown to be very fast; equilibrium was reached in just 15 min. While the pseudo-first-order kinetic model adequately described the sorption kinetics, the Langmuir model turned out to be better appropriate for equilibrium data. The maximal monolayer sorption capacity was 97.58 ± 1.69 mg/g. The Cd2+ uptake was further verified by zeta potential tests, SEM-EDX, FT-IR, XPS, and XRF investigations. Breakthrough and exhausted points were recorded as 20 and 240 min. Chu's basic model fits the breakthrough curve of the JEONS20 column quite well. The column saturation capacity value (94.65 mg/g) was found to be consistent with the sorption capacity obtained from the Thomas model. Regeneration studies showed that JEONS20's uptake and recovery efficiencies remained at >50% and 98%, respectively, after even 20 consecutive cycles. The JEONS20-loaded columns' excellent performance (95.75 ± 1.03% and 94.72 ± 0.73%) in two distinct real wastewater samples shows the suggested hybrid sorbent's strong application potential. When every aspect is considered, the findings might identify a new option for addressing metal contamination in aquatic environments.