Effect of Hg pollution in ex-gold mining soil ameliorated with bamboo biochar on vegetative growth of corn (Zea mays L.)
Year: 2024
Type: conference-paper
Abstract: Gold mining has caused negative impacts on the environment, especially Hg contamination and pollution in the soil system. This study aims to assess the effect of Hg pollution on ex-gold mining soil in Dharmasraya West Sumatra ameliorated with bamboo biochar (B-B) on corn (Zea mays L.) plants in polybags (15 kg soil polybags−1). The research was conducted at the Wire House, Agriculture Faculty Andalas University in a completely randomized design (CRD) with three replications of five doses of bamboo biochar application namely 0, 10, 20, 30, and 40 t ha−1. The application of 40 t ha−1 bamboo biochar (300 g B-B 15kg soil−1) can improve the chemical properties of ex-gold mining soil contaminated with Hg which can increase soil pH by 3.10, organic matter by 0.46% C, CEC by 3.34 cmol(+) kg−1, total N by 0.031% N, available P by 3.06 ppm, K-exch by 0.21 cmol(+) kg−1; Ca-exch by 0.0016 cmol(+) kg−1, and Mg-exch by 0.328 cmol(+) kg−1 and can inactivate Hg pollution with a decrease in total Hg of 1.52 mg kg−1, compared to the control. The application of 40 t ha−1 (300 g B-B 15 kg soil−1) on ex-gold mining soil contaminated with Hg can also increase plant height to 81.66 cm, plant dry weight of 68.65 g, an increase in nutrient levels of 0.033% N, 0.001% P, and 0.134% K, and a decrease in plant Hg up to 1.12 mg kg−1, compared to the control.
Authors: H Herviyanti, K Febriana, T B Prasetyo, V Sukma, G Gusmini, A Maulana, I Darfis
Institution: Andalas University
Language: English
Topic: Heavy metals in environment
Subfield: Pollution
Field: Environmental Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4402686956