LAQV/REQUIMTE, Departamento de Ciências e Tecnologia da Biomassa (DCTB), Faculdade de Ciências e Tecnologia (FCT), Universidade Nova de Lisboa (UNL), 2829-516 Caparica, Portugal.
LAQV/REQUIMTE, Departamento de Ciências e Tecnologia da Biomassa (DCTB), Faculdade de Ciências e Tecnologia (FCT), Universidade Nova de Lisboa (UNL), 2829-516 Caparica, Portugal.
Bioresour Technol. 2018 Oct;266:139-150. doi: 10.1016/j.biortech.2018.06.054. Epub 2018 Jun 20.
Blends of rice waste streams were submitted to co-gasification assays. The resulting chars (G1C and G2C) were characterized and used in Cr(III) removal assays from a synthetic solution. A Commercial Activated Carbon (CAC) was used for comparison purposes. The chars were non-porous materials mainly composed by ashes (68.3-92.6% w/w). The influences of adsorbent loading (solid/liquid ratio - S/L) and initial pH in Cr(III) removal were tested. G2C at a S/L of 5 mg L and an initial pH of 4.50 presented an uptake capacity significantly higher than CAC (7.29 and 2.59 mg g, respectively). G2C was used in Cr(III) removal assays from an industrial wastewater with Cr(III) concentrations of 50, 100 and 200 mg L. Cr(III) removal by precipitation (uptake capacity ranging from 11.1 to 14.9 mg g) was more effective in G2C, while adsorption (uptake capacity of 16.1 mg g) was the main removal mechanism in CAC.
将稻渣混合物进行共气化分析。所得的炭（G1C 和 G2C）进行了表征，并用于从合成溶液中去除 Cr(III)的实验。商业活性炭（CAC）被用作比较。这些炭是无孔材料，主要由灰分（68.3-92.6% w/w）组成。考察了吸附剂负载量（固液比-S/L）和初始 pH 值对 Cr(III)去除的影响。在 S/L 为 5mg/L 和初始 pH 值为 4.50 的条件下，G2C 的去除能力明显高于 CAC（分别为 7.29 和 2.59mg/g）。G2C 还用于去除 Cr(III)浓度分别为 50、100 和 200mg/L 的工业废水中的 Cr(III)。在 G2C 中，沉淀（去除能力在 11.1 至 14.9mg/g 之间）去除 Cr(III)的效果更显著，而 CAC 中主要的去除机制是吸附（去除能力为 16.1mg/g）。
