Fabrication of biochar derived from different types of feedstocks as an efficient adsorbent for soil heavy metal removal

被引:39
作者
Burachevskaya, Marina [1 ]
Minkina, Tatiana [1 ]
Bauer, Tatiana [1 ]
Lobzenko, Ilya [1 ]
Fedorenko, Alexey [1 ]
Mazarji, Mahmoud [1 ]
Sushkova, Svetlana [1 ]
Mandzhieva, Saglara [1 ]
Nazarenko, Alexander [2 ]
Butova, Vera [1 ]
Wong, Ming Hung [3 ,4 ]
Rajput, Vishnu D. [1 ]
机构
[1] Southern Fed Univ, Rostov Na Donu, Russia
[2] Russian Acad Sci, Southern Sci Ctr, Rostov Na Donu, Russia
[3] Educ Univ Hong Kong, Consortium Hlth Environm Educ & Res CHEER, Tai Po, Hong Kong, Peoples R China
[4] Educ Univ Hong Kong, Dept Sci & Environm Studies, Tai Po, Hong Kong, Peoples R China
关键词
COMPETITIVE ADSORPTION; PYROLYSIS TEMPERATURE; SORPTION; CADMIUM; BIOMASS; ZINC; DESORPTION; COPPER; SCALE; LEAD;
D O I
10.1038/s41598-023-27638-9
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
For effective soil remediation, it is vital to apply environmentally friendly and cost-effective technologies following the notion of green sustainable development. In the context of recycling waste and preserving nutrients in the soil, biochar production and utilization have become widespread. There is an urgent need to develop high-efficiency biochar-based sorbents for pollution removal from soil. This research examined the efficacy of soil remediation using biochar made from three distinct sources: wood, and agricultural residues (sunflower and rice husks). The generated biochars were characterized by SEM/SCEM, XRF, XRD, FTIR, BET Specific Surface Area, and elemental compositions. The presence of hydroxyl and phenolic functional groups and esters in wood, sunflower and rice husk biochar were noted. The total volume of pores was in the following descending order: rice husk > wood > sunflower husk. However, wood biochar had more thermally stable, heterogeneous, irregular-shaped pores than other samples. Adsorption of soil-heavy metals into biochars differed depending on the type of adsorbent, according to data derived from distribution coefficients, sorption degree, Freundlich, and Langmuir adsorption models. The input of biochars to Calcaric Fluvic Arenosol increased its adsorption ability under contamination by Cu(II), Zn(II), and Pb(II) in the following order: wood > rice husk > sunflower husk. The addition of sunflower husk, wood, and rice husk biochar to the soil led to an increase in the removal efficiency of metals in all cases (more than 77%). The increase in the percentage adsorption of Cu and Pb was 9-19%, of Zn was 11-21%. The present results indicated that all biochars functioned well as an absorbent for removing heavy metals from soils. The tailor-made surface chemistry properties and the high sorption efficiency of the biochar from sunflower and rice husks could potentially be used for soil remediation.
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页数:14
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