PDF(Pubmed)
Abstract：
Converting more CO2 absorbed by plant photosynthesis into biomass-activated carbon effectively reduces carbon emissions. In this study, we used a one-step preparation of biomass-activated carbon loaded with MgO nanoparticles to investigate the effect of Mg loading on the catalytic pyrolysis process. The influences of magnesium loading on biochar yield and fixed carbon production were assessed. The addition of 1% Mg weakened the carbonyl C=O, inhibited the dehydroxylation reaction, enhanced the C-H signal strength, and the formation of MgO inhibited the weaker- bound substituent breakage. Additionally, the addition of magnesium altered the morphological features and chemical composition of the biochar material. It also increased the activated carbon mesoporosity by 3.94%, biochar yield by 5.55%, and fixed carbon yield by 12.14%. The addition of 1% Mg increased the adsorption capacity of the activated carbon to potassium dichromate, acid magenta, methylene blue, and tetracycline effluents by 8.71 mg, 37.15 mg, 117.68 mg, and 3.53 mg, respectively. The results showed that MgCl2 played a significant role in promoting the thermal degradation of biomass and improving the solid yield and adsorption performance of activated carbon.
摘要：
将植物光合作用吸收的更多CO2转化为生物质活性炭可有效减少碳排放。在这项研究中,我们使用一步制备负载MgO纳米颗粒的生物质活性炭来研究Mg负载对催化热解过程的影响。评估了镁负载对生物炭产率和固定碳产量的影响。添加1%Mg削弱了羰基C=O，抑制脱羟基反应，增强了C-H信号强度，MgO的形成抑制了弱结合的取代基断裂。此外,镁的添加改变了生物炭材料的形态特征和化学组成。它还增加了3.94％的活性炭介孔，生物炭产率为5.55%，固定碳产率为12.14%。1%Mg的添加提高了活性炭对重铬酸钾的吸附能力,酸性洋红色,亚甲蓝,和四环素流出物8.71毫克，37.15毫克，117.68毫克，和3.53毫克，分别。结果表明,MgCl2对生物质的热降解有明显的促进作用,提高了活性炭的固体产率和吸附性能。
