摘要：In the study, JL-BC, an environmentally friendly shale inhibitor with a temperature tolerance of 220 掳C was synthesized by grafting modified nano biochar (BC) onto polyarginyl lysine (JL) for the first time. Fourier transform infrared spectroscopy (FTIR) and thermogravimetric (TGA) tests indicated that JL-BC had been successfully synthesized and had good thermal stability. The inhibition performance of JL-BC was experimentally evaluated by linear swelling test, hot-rolling recovery test and sodium bentonite (Na-BT) block immersion test, and the inhibition mechanism of JL-BC was studied by various experimental characterization methods. The experimental results showed that compared with potassium chloride (KCl), polyether amine (PEA), bionic inhibitor dopamine (DA), 2, 3-epoxypropyltrimethylammonium chloride (EPTAC), and poly dimethyl diallyl ammonium chloride (PDMDAAC), Na-BT had the lowest linear swelling height of 4.49 mm in 4 % JL-BC solution at 150 掳C. The recovery rates of shale cuttings were highest in 4 % JL-BC solution at 200 掳C and 220 掳C, which were 96 % and 92 %, respectively. The Na-BT block was immersed in 4 % JL-BC solution for 16 h basically retained its original morphology. The excellent inhibition performance of JL-BC was mainly attributed to the positive charge of JL-BC in aqueous solution at pH 9, which was strongly adsorbed on Na-BT, lowering the zeta potential of Na-BT, destabilizing Na-BT and causing it to aggregate. With the increase of JL-BC concentration, Na-BT gradually aggregated into larger flocs, increasing the particle size of Na-BT. Nano BC reduced water intrusion to a certain extent by physically blocking micropores. In addition, the EC50 value of JL-BC was 2.93 脳 105 mg/L, indicating that it was non-toxic. The addition of JL-BC to the soil effectively increased the content of organic matter, ammonium nitrogen and available potassium, and promoted the growth of wheat seedlings. This work may open a new avenue for the development and use of environmentally friendly treatment agents. 漏 2024 Elsevier B.V.

ISSN号：0167-7322

卷、期、页：卷410

发表日期：2024-09-15

期刊分区（SCI为中科院分区）：二区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：Journal of Molecular Liquids

通讯作者：王倩男,王星星,王奕杰

第一作者：蒋官澄,贺垠博,杨丽丽

论文类型：期刊论文

论文概要：王倩男,蒋官澄,王星星,贺垠博,杨丽丽,王奕杰，Study on polyarginyl lysine grafted modified nano biochar as an environmentally friendly shale inhibitor，Journal of Molecular Liquids，2024，卷410

论文题目：Study on polyarginyl lysine grafted modified nano biochar as an environmentally friendly shale inhibitor