利用国产慈竹 Neosinocalamus affinis AC 在电动去除技术中去除 MSWI 飞灰中的重金属。
The application of homemade Neosinocalamus affinis AC in electrokinetic removal technology on heavy metal removal from the MSWI fly ash.
机构信息
State Key Laboratory for coal mine disaster dynamics and control, Chongqing University, 400044, China.
City College of Science and Technology, Chongqing University, Chongqing, 400044, China.
出版信息
Sci Rep. 2016 Dec 21;6:39312. doi: 10.1038/srep39312.
This present paper was focused on the manufacture of activated carbon (AC) and its application in the electrokinetic remediation (EKR) technology on removal of the heavy metals (HMs) from the municipal solid waste incineration fly ash. AC was produced from Neosinocalamus affinis (NF) by chemical activation with HPO in N atmosphere, the effects of activation temperatures, soaking time and impregnation ratios on the adsorption capacity of AC on HMs were examined through equilibrium adsorption experiments. The AC produced under the condition of 450 °C of activation temperature, 10 h of soaking time and 1.5 of impregnation ration was applied in the EKR experiment. The addition of AC in the S3-region of the electrolyzer could effectively improve the removal efficiencies of HMs. The technical parameters of voltage gradient, processing time and proportion were further optimized in the coupled experiments, the maximum removal of Cu, Zn, Cd, and Pb was 84.93%, 69.61%, 79.57%, and 78.55% respectively obtained under the optimal operating conditions of 2 V/cm of voltage gradient, 8 d of processing time and 20% of proportion.
本研究聚焦于活性炭（AC）的制备及其在电动修复（EKR）技术中的应用，以去除城市生活垃圾焚烧飞灰中的重金属（HMs）。AC 是通过在 N 气氛下用 HPO 对 Neosinocalamus affinis（NF）进行化学活化而制备的，通过平衡吸附实验考察了活化温度、浸泡时间和浸渍比对 AC 对 HMs 吸附能力的影响。在 450°C 的活化温度、10 小时的浸泡时间和 1.5 的浸渍比条件下制备的 AC 应用于 EKR 实验。在电解槽的 S3 区域添加 AC 可以有效提高 HMs 的去除效率。在耦合实验中进一步优化了电压梯度、处理时间和比例等技术参数，在 2V/cm 的电压梯度、8 天的处理时间和 20%的比例的最佳运行条件下，Cu、Zn、Cd 和 Pb 的最大去除率分别达到 84.93%、69.61%、79.57%和 78.55%。
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