The use of biomass residues from agricultural processes for the production of cheap and competitive activated carbon (AC) is an excellent option to minimize the costs of existing procedures to remove dyes from wastewater. In this study, the potential use of AC obtained from peanut hulls and rice husks for adsorption of Cibacron Yellow F-4G (CYF-4G) is examined. The activated peanut hull (PHAC) and rice husk (RHAC) were characterized by TGA, FTIR, BET and elemental analysis. The effects of different process variables as well as the dose of adsorbent, dye concentration and pH were evaluated. A decrease in amount of dye adsorbed per unit adsorbent mass was observed when increasing CYF-4G concentration. The results showed an optimal dye adsorption value at a pH of 2.0. The adsorption kinetics of CYF-4G are governed by the pseudo-second-order model. In addition, adsorption fits the Langmuir isotherm better than Freundlich’s. Adsorption capacities of AC prepared from agricultural waste show that PHAC performs better than RHAC to remove CYF-4G.

利用农业生产过程中产生的生物质残留物来生产廉价且具有竞争力的活性炭（AC）是将现有工艺从废水中去除染料的成本降至最低的绝佳选择。在这项研究中，研究了从花生壳和稻壳获得的AC吸附Cibacron Yellow F-4G（CYF-4G）的潜在用途。通过TGA，FTIR，BET和元素分析对活化花生壳（PHAC）和稻壳（RHAC）进行了表征。评估了不同工艺变量以及吸附剂量，染料浓度和pH的影响。CYF-4G浓度增加时，每单位吸附剂质量的染料吸附量减少。结果表明在2.0的pH下最佳的染料吸附值。CYF-4G的吸附动力学受拟二级模型控制。另外，吸附比朗格缪尔等温线更适合朗格缪尔等温线。由农业废料制得的AC的吸附能力表明，PHAC在去除CYF-4G方面比RHAC更好。