Potential Role of Combined Microbial Inoculants and Plant of Limnocharis flava on Eliminating Cadmium from Artificial Contaminated Soil

Nguyen Thi Lam, Shaoxian Song, Bui Thi Ngoc Dung, Tran Ngoc Binh, Afshin Maleki, Kazem Godini and Tang Van Tai ()
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Nguyen Thi Lam: Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China
Shaoxian Song: Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan 430070, China
Bui Thi Ngoc Dung: National Institute of Agriculture Planning and Projection (NIAPP), 61 Hang Chuoi Str., Hanoi 100000, Vietnam
Tran Ngoc Binh: Faculty of Public Health, Vinh Medical University, Vinh 460000, Vietnam
Afshin Maleki: Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj 66177-13446, Iran
Kazem Godini: Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj 66177-13446, Iran
Tang Van Tai: Faculty of Safety Engineering, School of Engineering and Technology, Van Lang University, Ho Chi Minh City 700000, Vietnam

Sustainability, 2022, vol. 14, issue 19, 1-14

Abstract: This study aimed to investigate the possibility of eliminating cadmium (Cd) from contaminated agricultural soil using a combination of microbial inoculants of Penicillium chrysogenum fungus and Bacillus licheniformis with Limnocharis flava plants. Limnocharis flava ( L. flava ) and microbial inoculants with four Cd levels, including 2.05 (T1 control), 5 (T2), 10 (T3), and 20 mg/kg (T4), respectively, were tested in green house conditions. Cd accumulation was evaluated to assess the safety limit of the Cd concentration in the edible parts of L. flava . The results showed that the application of the microbial inoculants facilitated the stress tolerance of the plants caused by a Cd accumulation in the soil matrix. The use of Penicillium chrysogenum and Bacillus licheniform in combination with L. flava increased the Cd accumulation in plant biomass. The total Cd after the experiment varied between 4.86 and 18.44 mg/kg in dry, clean soil, equivalent to reduction rates of 2.80, 4.40, and 7.80%, respectively. Meanwhile, the availability of Cd in soil was significantly reduced by 12.50, 13.04, 13.33, and 13.93%, respectively. Consequently, the microbial inoculants helped the plants to grow healthily, increased the yield, and reduced the total and available Cd content of contaminated agricultural land up to a concentration level of 5 mg/kg.

Keywords: microbial inoculants; Limnocharis flava; heavy metal treatment; Cd accumulation; soil conservation (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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