Wool Carpet Dye Adsorption on Nanoporous Carbon Materials Derived from Agro-Product

Abstract

Abstract:In this paper, wool carpet dye adsorption properties of nanoporous activated carbon materials (NCMs) prepared from bamboo agro-product is reported. Bamboo cane powder was chemically activated with phosphoric acid at different temperatures (400, 500, and 600 • C) at an impregnation ratio of 1:1. We found that the specific surface area and the total pore volume of NCM increases with temperature giving the highest surface area and pore volume ca. 2130 m 2 ·g −1 and 2.69 cc·g −1 at 600 • C. Owing to superior surface textural properties, bamboo-derived NCM showed excellent adsorption capacity for wool carpet dyes Lanasyn orange (LO) and Lanasyn gray (LG). The adsorption phenomena could be described by Langmuir/Freundlich adsorption isotherm models. The maximum adsorption capacity was ca. 2.60 × 10 3 and 3.04 × 10 3 mg·g −1 for LO and LG, respectively. The adsorption followed pseudo second order kinetics with the second order rate constant of 1.24 × 10 −3 g·mg −1 ·min −1 (LO) and 7.69 × 10 −4 g·mg −1 ·min −1 (LG), respectively. This study demonstrated that the high surface area NCMs prepared from agro-product can be used as efficient and cost-effective adsorbent materials for the removal of dyes from industrial effluent.

Rice Husk-Derived High Surface Area Nanoporous Carbon Materials with Excellent Iodine and Methylene Blue Adsorption Properties

“…Therefore, attention has been paid to the production of scalable high surface area nanoporous carbon materials, particularly in a cost effective way from agricultural by-products or wastes. Wide varieties of carbonaceous precursor materials including pitch [21], pistachio shell [22], rice husks [23,24], coconut shell [25], eucalyptus wood [26], firewood [27,28], oil-palm shell [29,30], babassu [31], corncob [32], bamboo [33,34], etc. have been used to prepare activated carbons.…”

Anticorrosion and electromagnetic interference shielding behavior of candle soot‐based epoxy coating

“…An intense and broad band at 1037 cm −1 , represents the stretching vibration due to carboxy functional groups (CO) related to the oxidized carbons . IR bands such as 798 cm −1 , 709 cm −1 , and 560 cm −1 may appeared for the aromatic CH bending . The UV–vis–NIR absorption spectrum for CS is shown in Figure .…”

Large Gain in Pyroelectric Energy Conversion through a Candle Soot Coating

“…Another peak for the stretching vibrations of carboxy groups (C−O) due to the oxidized carbons has broad and intense characteristics and is observed at 1037 cm −1 . A few other peaks at 798 cm −1 , 709 cm −1 , and 560 cm −1 represent different aromatic bending vibrations of C−H . The absorption study of the black candle soot coated on the PZT buzzer is carried out using UV‐vis‐NIR spectroscopy, shown in Figure d. Absorption with a gradual increase from 2400 nm to 1200 nm range in the NIR region is observed.…”

“…[38,39] Af ew other peaks at 798 cm À1 ,7 09 cm À1 ,a nd 560 cm À1 represent different aromatic bendingv ibrations of CÀH. [40] Thea bsorption study of the black candles oot coatedo nt he PZT buzzer is carried out using UV-vis-NIR spectroscopy,s hown in Figure 1d.A bsorption with ag radual increasefrom 2400 nm to 1200 nm range in the NIR region is observed.W eo bserved quick absorption of radiation from 1200 nm to 370 nm wavelength range belongingt ot he NIR to UV region.F urthermore,a bsorption of radiation below to 370 nm decreases significantly.…”