Porous biochar materials (BC) have shown excellent performance in energy storage and water treatment adsorption. Carbonization of agricultural and forestry solid waste and fixation in the form of stable biochar to form biochar materials can achieve green "waste utilization for treatment wastewater". In this study, BC samples were generated by using shell (COS) as raw material and KCO as green activator in-situ pyrolysis. The adsorption behavior of COS biochar in aqueous solution was evaluated using phenol as a pollutant probe. The synergistic effect of pyrolysis temperature and KCO activation promoted the development of the pore structure of BC. The X-ray photoelectron spectroscopy results indicated that KCO activation promoted the formation of C-C defects and promoted phenol adsorption. KBC-900 exhibited superior absorption capacity for phenol (300.15 mg/g). The activation of KCO also promoted the adsorption of oxygen. In addition, using HO for regenerating biochar did not show a significant decrease in the adsorption rate after five cycles (decline rate < 5 %). The strong adsorption capacity of KBC-900 for phenol might be due to the presence of π-π interactions, hydrogen bonds, and van der Waals interactions during the adsorption process.

中文翻译：

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通过 K2CO3 活化从油茶壳中提取可重复使用的生物炭，以增强苯酚吸附


多孔生物炭材料（BC）在储能和水处理吸附方面表现出了优异的性能。将农林固体废弃物炭化并以稳定的生物炭形式固定，形成生物炭材料，可实现绿色“废物利用处理废水”。本研究以贝壳（COS）为原料，KCO为绿色活化剂原位热解生成BC样品。使用苯酚作为污染物探针评估了 COS 生物炭在水溶液中的吸附行为。热解温度和KCO活化的协同作用促进了BC孔隙结构的发展。 X射线光电子能谱结果表明，KCO活化促进了CC缺陷的形成，促进了苯酚的吸附。 KBC-900 对苯酚表现出优异的吸收能力 (300.15 mg/g)。 KCO的活化也促进了氧的吸附。此外，使用 H2O 再生生物炭在五个循环后没有表现出吸附率的显着下降（下降率< 5%）。 KBC-900对苯酚的强吸附能力可能是由于吸附过程中π-π相互作用、氢键和范德华相互作用的存在。