Currently, the excessive application of fertilizers and the random discharge of waste water, waste gas, and residues have led to more and more serious soil pollution problems. Zeolite is the most promising material for preparing a green and environmentally friendly soil conditioner. Herein, the carbon nanotubes/polydopamine/ZSM-5 composite soil conditioner was prepared by a facile two-step method, and it was used to release fulvic acid and adsorb methylene blue to improve the environment. The cumulative release rate of the composite soil conditioner was 52% within 430 h for fulvic acid, which had a good sustained release effect and could be sustained-released in different acid-based surroundings. In addition, it showed a good adsorption capacity of methylene blue, and it is about 80.02 mg/g which was about six times higher than that of ZSM-5. It was beneficial for the adsorption of methylene blue in a neutral environment. Finally, it could promote the growth of brassica chinensis and maize, and the promotion effect was 60 and 35%, respectively. Therefore, the carbon nanotubes/polydopamine/ZSM-5 composite soil conditioner is a green and efficient material, which provides a new strategy to solve the problem of soil pollution.

中文翻译：

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具有良好控释吸附性能的碳纳米管/聚多巴胺/ZSM-5复合土壤调理剂

目前，化肥的过量施用以及废水、废气、残渣的随意排放，导致土壤污染问题越来越严重。沸石是制备绿色环保土壤调理剂最有前途的材料。本文采用简便的两步法制备碳纳米管/聚多巴胺/ZSM-5复合土壤调理剂，用于释放富里酸和吸附亚甲蓝以改善环境。复合土壤调理剂对黄腐酸在430 h内的累积释放率为52%，具有良好的缓释效果，可在不同酸基环境中缓释。此外，它对亚甲基蓝的吸附能力也很好，约为80.02 mg/g，是ZSM-5的6倍左右。有利于亚甲基蓝在中性环境中的吸附。最后对芸苔和玉米的生长有促进作用，促进效果分别为60%和35%。因此，碳纳米管/聚多巴胺/ZSM-5复合土壤调理剂是一种绿色高效的材料，为解决土壤污染问题提供了新的策略。