This study was conducted to investigate the potential of Jujube (Ziziphus jujube L) wood waste-derived biochar (BC) and its derivative polymer-modified biochar (PBC) in removing hexavalent chromium (Cr^VI) from aqueous solutions and in achieving Cr stabilization in tannery waste-contaminated soil. BC was produced at three different pyrolysis temperature (300 °C, 500 °C, 700 °C) and was polymerized with acrylamide and N, N1 methylenebisacrylamide. The results showed that Cr^VI adsorption is a function of the pH and Cr^VI initial concentration of the solution. The PBC showed highest sorption efficiency for Cr^VI removal, which amounted to 76.4%–99.6% of the Cr^VI overall initial concentrations (5–40 mg L⁻¹) at an initial pH of 2. In greenhouse, wheat (Triticum aestivum L) was cultivated as a test crop in pots with tannery waste-contaminated soil along with BCs and PBCs amendments. The BC and PBC amended soil showed 47.7% and 65% less Cr uptake by the plant roots in comparison with unamended soil, respectively. In addition, zero concentration of Cr in the plant shoots was noted with the PBC-amended soil, while the Cr concentration in the shoots was decreased by 89% with the BC-amended soil. Thus, it was concluded that BC and PBC have great potential in removing Cr^VI from aqueous phases and in decreasing the Cr mobility and bioavailability in soil.

这项研究的目的是研究枣木废料生物炭（BC）及其衍生的聚合物改性生物炭（PBC）在去除水溶液中的六价铬（Cr ^VI）和实现铬稳定方面的潜力。制革厂废物污染的土壤。BC在三种不同的热解温度（300°C，500°C，700°C）下生产，并与丙烯酰胺和N，N1亚甲基双丙烯酰胺聚合。结果表明，Cr ^VI吸附是溶液的pH和Cr ^VI初始浓度的函数。PBC去除Cr ^VI的吸附效率最高，占Cr ^VI的76.4％–99.6％。初始pH值为2时，总初始浓度为（5-40 mg L ^-1）。在温室中，将小麦（Triticum aestivum L）种植在装有制革废料污染土壤以及BCs和PBCs改良剂的盆中作为试验作物。BC和PBC改良土壤与未改良土壤相比，植物根系吸收的Cr分别少47.7％和65％。此外，在PBC改良土壤中，植物芽中的Cr浓度为零，而在BC改良土壤中，芽中的Cr浓度降低了89％。因此，可以得出结论，BC和PBC在去除水相中的Cr ^VI以及降低土壤中Cr的迁移率和生物利用度方面具有巨大潜力。