Acid modified jackfruit wood sawdust as biosorbent for the removal of Fe(II) from aqueous solutions

Abstract

Abstract. The adsorption of Fe(II) from aqueous solutions by acid modified jackfruit wood sawdust biosorbent was investigated in a batch adsorption system. The experiment conducted at room temperature and pH 5 resulted adsorption behaviour of chemical modified Jackfruit wood sawdust biosorbent. The removal of Fe(II) has been found to be the function of initial Fe(II) concentration, acid type and acid concentration. The best removal was at low Fe(II) initial concentration, the higher initial concentration resulted on lower adsorption. Untreated jackfruit wood sawdust has the highest adsorption efficiency, followed by acetic acid, citric acid and tartaric acid modified jackfruit wood sawdust. The maximum uptake capacity of Fe (II) ion was 1.05 mg/g by untreated jackfruit wood sawdust.

Chemical Modification of Neem (Azadirachta indica) Biomass as Bioadsorbent for Removal of Pb2+ Ion from Aqueous Waste Water

“…There was a decrease to 68.79% when the initial lead (II) ion concentration was increased to 300 mg L -1 . In agreement with previous literature, the initial concentration of heavy metal ions is shown to have an effect on the adsorption process [40]. The cause for the efficiency of the bioadsorbent materials became exhausted gradually with the increase in the initial lead (II) ion concentration.…”

“…Optimization of Activation of Neem Biomass. The effect and optimization of citric acid concentration (0.3-0.9 M) [39,40], activation time (20-100 min) [37,41], and temperature (90-130 °C) [37,39] were considered for activation of NB. Response surface methodology (RSM) with central composite design (CCD) was applied for experimental matrix design and optimization of citric acid neem biomass activation process (Table 1).…”

BIO ADSORBENT SERBUK KAYU NANGKA SEBAGAI PENJERAP ION Pb(II) DARI LARUTAN

“…Pada penelitian yang telah dilakukan sebelumnya, terbukti bahwa serbuk kayu nangka alami memiliki kapasitas penjerapan 30% lebih besar bila dibandingkan dengan serbuk kayu nangka yang dimodifikasi dengan asam asetat, pada konsentrasi ion logam mula-mula 24 ppm (Mutiara et al, 2018). Pada penelitian ini dilakukan percobaan adsorpsi pada serbuk kayu nangka tanpa modifikasi kimia untuk mengetahui kinetika penjerapan ion Pb(II), pengaruh kecepatan putar dan pH terhadap kapasitas penjerapan.…”