Biosorption of Remazol Black B dye (Azo dye) by the growingAspergillus flavus

Abstract

In the present study, an attempt was made for the removal of Remazol Black B dye (azo dye) by using Aspergillus Flavus during its growth. Biosorption of the azo dye by growing fungi was investigated in batch reactors as a function of initial concentration of dye (25-1000 mg/L), inoculum concentration (5-20%), and pH (2.5-6.5). The total biomass concentration decreased from 6.3 g/L to 1.44 g/L by increasing the dye concentration from 0 to 1000 mg/L. The dye uptake increased from 4.37 to 233 mg/g of dried biomass by increasing initial concentration of dye from 25 to 1000 mg/L. The nearly complete removal of dye was found at initial concentration upto 250 mg/L and at pH 4.5 which was used as working pH value for removal of dye in all the batch studies. The removal of Chemical Oxygen Demand (COD) was found to be 90% at 100 mg/L initial concentration of dye. The experiments were also performed with wastewater from textile industry with an aim to examine the potential of fungal biomass for the removal of dyes from wastewater under actual field conditions. The maximum dye removal was obtained at 30° C temperature (87%) in presence of 1 % glucose concentration (89%) and 10 % inoculum concentration (91%) after 96 hours from textile wastewater. The surface of the biosorbent before and after the sorption of the dye was examined by FTIR and SEM analysis.

Pemanfaatan sistem rotary biological contactor menggunakan kultur Omphalina sp yang diimobilisasi pada tandan kosong kelapa sawit untuk absorbsi logam berat Cu2+ dan Hg2+ (Utilization of rotary biological contactor system using Omphalina sp immobilized on oil palm empty fruit bunch for absorption of heavy metals Cu2+ and Hg2+)

“…Semakin tinggi konsentrasi ion logam maka efisiensi penyerapan biomassa akan semakin rendah. Hal itu dikarenakan peningkatan jumlah ion logam semakin meningkat untuk dapat berikatan dengan biomassa dan kurangnya sisi kompleksitas dari biomassa untuk mengikat seluruh ion logam (Ranjusha et al, 2010).…”

The potential of Aspergillus species in transformation of agricultural products for sustainable production of textile and leather industries in Tanzania

“…The dead biomass of A. niger has high ability to absorb dye wastes from textiles (Khalaf, 2008). Other studies have also revealed its biosorption of complicated dye waste from textile industries especially the azo dye (Ranjusha et al, 2010). Thus, harnessing fungal products for industrial processing of textiles in developing countries including Tanzania would improve and promote sustainable production.…”

Synthesis of Iron Doped Zeolite Imidazolate Framework-8 and Its Remazol Deep Black RGB Dye Adsorption Ability

“…The nearly complete removal of dye was found at initial concentration up to 250 mg/L and at pH 4.5 which was used as working pH value for removal of dye in all the batch studies. The removal of chemical oxygen demand (COD) was found to be 90% at 100 mg/L initial concentration of dye [4]. Metal-organic frameworks (MOFs) are hybrid materials with ordered three-dimensional frameworks via strong metal-ligand bonds between metal cations and organic linkers [5].…”

“…Textural properties of ZIF-8 andFe-ZIF-8.BET : specific surface area calculated by BET model;2 Langmuir : specific surface area calculated by Langmuir model; 3 pore : pore diameter calculated by BJH model;4 …”