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Phosphate-lanthanum coated sewage sludge biochar improved the soil properties and growth of ryegrass in an alkaline soil

文献类型： 外文期刊

作者： Elkhlifi, Zouhair 1 ; Kamran, Muhammad 2 ; Maqbool, Ahsan 2 ; El-Naggar, Ali 3 ; Ifthikar, Jerosha 1 ; Parveen, Aas 1 ;

作者机构： 1.Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Key Lab Mat Chem Energy Convers & Storage, Hubei Key Lab Mat Chem & Serv Failure,Minist Educ, Wuhan 430074, Peoples R China

2.Chinese Acad Sci, Inst Soil Sci, CAS Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Peoples R China

3.Ain Shams Univ, Fac Agr, Dept Soil Sci, Cairo 11241, Egypt

4.Huazhong Univ Sci & Technol, Sch Environm Sci & Engn, Dept Environm Engn, Wuhan 430074, Peoples R China

5.Islamia Univ Bahawalpur, Fac Agr & Environm Sci, Dept Soil Sci, Bahawalpur 63100, Punjab, Pakistan

6.Ghazi Univ, Dept Soil & Environm Sci, Dera Ghazi Khan, Pakistan

7.Govt Coll Univ Faisalabad, Dept Environm Sci & Engn, Faisalabad 38000, Pakistan

8.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

9.China Univ Geo Sci, Sch Environm Studies, Wuhan 430074, Hubei, Peoples R China

10.China Med Univ, Dept Biol Sci & Technol, Taichung 40402, Taiwan

关键词： Sewage sludge biochar; Ryegrass; Soil fertility; Alkaline soil; Phosphorous

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

ISSN： 0147-6513

年卷期： 2021 年 216 卷

页码：

收录情况： SCI

摘要： The reclamation of alkaline soils remains challenging while the application of biochar has been proposed as a viable measure to rehabilitate soil fertility. The objective of the current pot study was to evaluate the efficacy of various P-La modified sewage sludge biochars (SSBC, La-SSBC, SSBC-P, La-SSBC-P) on soil phosphate-retention and ryegrass (Lolium perenne L.) growth in an alkaline soil (excess CaCO3). The results revealed that germination percentage, plant dry biomass, plant height, and the total amount of P in the ryegrass leaves were significantly (P < 0.05) improved under La-SSBC-P treatment as compared to other treatments. La-SSBC-P treatment significantly altered the chemical characteristics of post-harvest alkaline soil, such as pH, electrical conductivity (EC), cation exchange capacity (CEC), soil organic matter (SOM), limestone (CaCO3), phosphate, and lanthanum contents. In comparison to the SSBC treatment, soil available phosphorous (AP) contents under La-SSBC-P were enhanced by 6.7 times after loading biochar with P and La (La-SSBC-P). After the plantation of ryegrass, concentration of lanthanum in the soil was negligible. The contents of CaCO3 reduced by 76.2% after La-SSBC-P biochar treatment, compared to the cultivated control. This phenomenon clearly indicated that lanthanum was reduced due to the precipitation with limestone, which was proposed based on the data of X-ray diffraction (XRD) analysis. Overall, results showed that the P-loaded lanthanum decorated biochar (La-SSBC-P) could be used as a potential substitute for P-fertilizer under the experimental conditions. However, field experiments are required to confer the efficiency of La-SSBC-P as P fertilizer in different soils.

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