文献类型： 外文期刊

作者： Cheema, Ayesha Imtiyaz ¹ ; Liu, Guijian ¹ ; Yousaf, Balal ² ; Ashraf, Aniqa ¹ ; Lu, Muyuan ¹ ; Irshad, Samina ¹ ; Pikon, Krzysztof ² ; Munir, Mehr Ahmed Mujtaba ³ ; Rashid, Muhammad Saqib ⁵ ;

作者机构： 1.Univ Sci & Technol China, CAS Key Lab Crust Mantle Mat & Environm, Sch Earth & Space Sci, Hefei 230026, Peoples R China

2.Silesian Tech Univ, Fac Energy & Environm Engn, Dept Technol & Installat Waste Management, PL-44100 Gliwice, Poland

3.Zhejiang Univ Technol, Coll Environm, 18 Chaowang Rd, Hangzhou 310014, Peoples R China

4.Key Lab Microbial Technol Ind Pollut Control Zheji, Hangzhou 310014, Peoples R China

5.Guangdong Acad Agr Sci, Key Lab Plant Nutr & Fertilizer South Reg, Guangdong Key Lab Nutrient Cycling & Farmland Cons, Inst Agr Resources & Environm,Minist Agr, Guangzhou 510640, Peoples R China

6.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Environm Sci & Engn, Hefei 230026, Anhui, Peoples R China

关键词： Vacuum-assisted biochar; Metal(loid)s; Antioxidant system; Speciation; Metal uptake and transfer

期刊名称：JOURNAL OF ENVIRONMENTAL MANAGEMENT （ 影响因子：8.7； 五年影响因子：8.4 ）

ISSN： 0301-4797

年卷期： 2023 年 347 卷

页码：

收录情况： SCI

摘要： Soil contamination and its subsequent impact on the food chain is a pressing challenge in the present day. The application of biochar has demonstrated a significant and positive effect on soil health, thereby enhancing plant growth and development. However, the application of biochar (BC) produced from negative pressure-induced carbonization to mitigate metal(loid) contamination is a new strategy that has been studied in current research. Results depicted that the application of biochar derived from the negative pressure carbonization (vacuum-assisted biochar (VBC) has a significant (p <= 0.05) positive impact on plant growth and physiological characteristics by influencing immobilization and speciation of metal(loid) in the soil system. Moreover, the interactive effect of VBC on physiological characteristics (photosynthesis, gas exchange, and chlorophyll contents) and antioxidant activities of maize (Zea mays L.) was significantly (p <= 0.05) positive by confining the translocation and movement of metal(loid)s to the aerial part of the maize plant. X-ray diffraction (XRD) provided information on the structural and chemical changes induced by the VBC-500 degrees C explaining metal(loid) adsorption onto mineral surfaces and complexation that can affect their mobility, availability, and toxicity in the contaminated soil. Fourier transform infrared spectroscopy (FTIR) further provided a more detailed understanding of the metal(loid)s and biochar complexation mechanisms influenced by VBC-based functional groups -OH, C-Hn, -COOH, C--O, C-O-C, C--C, C-O, C-H, OH, and C-C in the binding process. These results suggest that the application of biochar prepared at 500 degrees C under negative pressure-induced carbonization conditions to the soil is the most efficient way to reduce the uptake and transfer of metal(loid)s by influencing their mobility and availability in the soil-plant system.