Self-activation technology offers an eco-friendly strategy to produce activated carbons. This research attempted to enhance the production efficiency of self-activation by introducing microwave heating. Activated carbons were prepared as arsenic adsorbents from bamboo shoot shells (BSS) by combining microwave pyrolysis and self-activation. Microwave pyrolysis showed a faster thermal decomposition rate and lower pyrolysis temperature range than conventional pyrolysis, and H₂O and CO₂ from pyrolysis acted as activator. Besides, the prediction models of specific surface area (SSA), micropore volume (MPV) and As(V) adsorption capacity (q_e) with high accuracy were established using response surface methodology. Based on the q_e values, the optimum preparation condition was 1018 °C for 39 min under a microwave power of 1625 W. The activated carbon exhibited satisfactory As(V) adsorption capacity of 4.79 mg/g, with a total pore volume of 0.702 cm³/g and a SSA of 1330 m²/g. This work significantly improved self-activation technology's production efficiency and reduced the arsenic adsorbent's production cost. Furthermore, it also provided a promising strategy for green preparation of activated carbons from biomass resources.

自活化技术提供了一种环保的活性炭生产策略。本研究试图通过引入微波加热来提高自激活的生产效率。采用微波热解和自活化相结合的方法，以竹笋壳（BSS）为原料制备活性炭作为砷吸附剂。与传统热解相比，微波热解表现出更快的热分解速率和更低的热解温度范围，并且热解产生的H ₂ O和CO ₂ 充当活化剂。此外，利用响应面法建立了比表面积（SSA）、微孔体积（MPV）和As（V）吸附量（q _e ）的高精度预测模型。根据q _e 值，最佳制备条件为1018 ℃，微波功率1625 W，39 min。活性炭表现出令人满意的As(V)吸附容量，为4.79 mg/g，总孔容为0.702 cm ³ /g，SSA为1330 m ² /g。该工作显着提高了自活化技术的生产效率，降低了砷吸附剂的生产成本。此外，它还为利用生物质资源绿色制备活性炭提供了一种有前景的策略。