Biomass activated carbon derived from golden needle mushroom root for the methylene blue and methyl orange adsorption from wastewater

作者：Xiaoyi Pan, Na Zhao, Shi Hu, He Wang, Fangtao Ruan, Hongjie Wang, Quan Feng · 发表于：Industrial Crops and Products · 年份：2024 · DOI：10.1016/j.indcrop.2024.120051 · 被引用次数：44 · 研究领域：Adsorption and biosorption for pollutant removal、Nanomaterials for catalytic reactions、Dye analysis and toxicity

Removing textile dye by activated carbon adsorption from wastewater has become a focus issue owing to its easy operation, rapid adsorption ability, and relatively high removal efficiency. Biomass-based activated carbon is an excellent candidate due to its renewability and easy accessibility, but the biomass resources like peel and stem are usually with relatively long growth cycle and the removal efficiency within a wide pH range is relatively low. Thus, a biomass carbon source with a short growth cycle and activated carbon with high removal efficiency within a wide pH value needs to be explored. In this study, golden needle mushroom root-based activated carbon (GNMACs) activated by H 3 PO 4 was successfully prepared, characterized, and applied in methylene blue (MB) and methyl orange (MO) removal. The carbonization temperature (400 °C ∼ 600 °C), the GNMACs dosage (5 mg ∼ 25 mg), and the dye solution pH (4 ∼ 12) were controlled. The results indicated the optimal adsorption performance can be achieved with the carbonization temperature of 550 °C and the adsorbent dosage of 20 mg. The GNMACs carbonized at 550 ℃ possessed a porous structure with the mesopore volume of 1.095 cm 3 /g, the specific surface area of 802.987 m 2 /g, and the average pore diameter of 5.87 nm. Within a wide pH range from 4 to 12, GNMACs removed MB with an efficiency above 98.57 % and MO with an efficiency above 98.77 %. Additionally, the adsorption process of MB and MO onto GNMACs followed the pseudo-sec...