Effects of Garbage Enzyme on the Heavy Metal Contents and the Growth of Castor under Mine Tailing

• Published in: IOP conference series. Earth and environmental science Vol. 474; no. 2; pp. 22010 - 22015
• Main Authors: Zhu, Guangxu, Cheng, Dandan, Liu, Xixi, Nie, Ping, Zuo, Renhui, Zhang, Hui, Wang, Xingfeng
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.04.2020
• Subjects: Absorption; Actinidia; Cadmium; Copper; Enzymes; Garbage; Heavy metals; Kiwifruit; Metal concentrations; Metals; Mine tailings; Mine wastes; Refuse; Rosa roxburghii; Zinc
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/474/2/022010

Pot experiment was performed to study the effect of garbage enzyme from the peel dregs of kiwifruit and Rosa roxburghii on the growth of castor and the contents of heavy metals (Cu, Zn, Cd and Pb) in the aerial part. The results indicated that the addition of two kinds of garbage enzyme with different concentrations was beneficial to the growth of castor, and the biomass of castor could be increased by up to 80%. High-concentration of Rosa roxburghii enzyme inhibited the absorption of heavy metals by castor, low-concentration of Rosa roxburghii enzyme showed a promotion effect; while high-concentration of kiwifruit enzyme increased the content of heavy metals in the aerial part of castor, low-concentration of kiwifruit enzyme showed inhibition, with a maximum decrease of 21% ∼ 42%. The results showed that kiwifruit enzyme with 1:800 diluted concentration could promote the growth of castor, and had the best inhibition effect on heavy metal absorption of castor.