Removal of industrial pollutant (Reactive Orange 122 dye) using environment-friendly sorbent Trapa bispinosa’s peel and fruit

Abstract

Removal of color water pollution due to Reactive Orange 122 dye was investigated using an inexpensive, locally available Trapa bispinosa. Fruit and peels of T. bispinosa biomass was used for this context in free, polyvinyl alcohol immobilized and chemically (H 2 O 2 ) treated form. The aftermath of operational parameters such as pH (1.0-6.0), dye initial concentration (10-350 mg L -1 ) and contact time (0-1,440 min) was investigated for maximum removal of dye from aqueous solution. Analysis was performed on UV-Vis spectrophotometer before and after sorption phenomenon. Maximum uptake was observed at pH 1.0. Highest q (mg g -1 ) was shown by H 2 O 2 -treated T. bispinosa fruit (46.36) and H 2 O 2 -treated T. bispinosa fruit beads (43.00). The sorption rate was rapid in first 30 min, and equilibrium was established in 120 min. It was observed that best model was pseudosecond order, with correlation coefficient in the range of 0.987-1.00. Langmuir model effectively described the sorption data with X m and R 2 that were in good agreement with experimental q (mg g -1 ). Regeneration of the sorbent was done by performing desorption cycles, which made the method environment-friendly and more economical. Surface morphology and elemental analysis of a sample were carried out.

Porous Activated Carbon from Lignocellulosic Agricultural Waste for the Removal of Acetampirid Pesticide from Aqueous Solutions

“…An adsorbent dose of 0.1 g seems to be optimum for the removal of acetamiprid experiments by TPAC. The effect of pH on the removal of acetamiprid pesticide by TPAC was studied at the pH range from 2-8 at initial concentration of 25 µg/mL and adsorbent dose 0.1 g. The effect of pH on the removal of acetamiprid onto TPAC from aqueous solution at different pH values (2)(3)(4)(5)(6)(7)(8) and zeta potential of TPAC are shown in Figure 6b,c. The removal percentage of acetamiprid reaches its maximum value (86.99%) at pH 5.0.…”

“…The mechanism of adsorption involved adsorption via ion exchange, chelation and complexation. It depends on different factors such as the chemical nature of the pollutants, type of the biosorbents, temperature, pH and ionic strength [8].…”

Chemical pretreatments of Trapa bispinosa's peel (TBP) biosorbent to enhance adsorption capacity for Pb(ll)

“…An wide survey of the available literature discloses very few articles on the adsorption activity of Trapa bispinosa's towards dyes and metals [29][30][31][32] and no reports towards Pb(II) removal. Trapa bispinosa (locally known as Singhara) is an aquatic edible plant and member of Trapaceae family.…”

Tobacco Stalk Waste Biomass Holds Multilayer and Spontaneous Adsorption Capabilities for Reactive Black 5 Dye: Equilibrium Modelling and Error Function Analysis

“…The acidic conditions results protonation of the TSB adsorbent surface which is negatively charged due to the presence of slightly anionic cellulose, crafting it appropriate for the holding of anionic reactive dye stuff present in aqueous phase [25]. Similar trends have been reported on reactive dyes adsorption by soybean hull [26], soybean residue [27], alfa fiber powder [28], eucalyptus bark [29], Trapa bispinosa's peel and its fruit [30]. pH pzc refers to the situation at which the protonic charge on the surface of adsorbent equals to anionic charge of aqueous solution, resulting in net zero charge on adsorbent's surface.…”