Animal carcass- and wood-derived biochars improved nutrient bioavailability, enzyme activity, and plant growth in metal-phthalic acid ester co-contaminated soils: A trial for reclamation and improvement of degraded soils

Journal of Environmental Management
Hanbo ChenJörg Rinklebe

Abstract

Reclamation of degraded soils such as those with low organic carbon content and soils co-contaminated with toxic elements and phthalic acid esters (PAEs) is of great concern. Little is known about the efficiency of plant- and animal-derived biochars for improving plant growth and physicochemical and biological properties of co-contaminated soils, particularly under low content of organic matter. Hence, a pot trial was carried out by growing pak choi (Brassica chinensis L.) to assess the influence of different doses (0, 0.5, 1, 2, and 4%) of animal (pig carcass) and wood (Platanus orientalis) derived biochars on soil properties, nutrient availabilities, plant growth, and soil enzyme activities in two soils containing low (LOC) and high (HOC) organic carbon contents and co-contaminated with di-(2-ethylhexyl) phthalic acid (DEHP) and cadmium (Cd). Biochar applications improved pH, salinity, carbon content, and cation exchange capacity of both soils. Addition of biochars significantly increased the bioavailability and uptake of phosphorus and potassium in the plants in both soils with greater effects from pig biochar than wood biochar. Biochar additions also significantly enhanced urease, sucrase, and catalase activities, but suppr...Continue Reading

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Citations

Sep 3, 2020·Environmental Science and Pollution Research International·Tiexin YangHailong Wang
Oct 17, 2020·The Science of the Total Environment·Houssou Assa AlbertHailong Wang
Nov 20, 2020·The Science of the Total Environment·Huanhuan WangGuoshun Liu
Feb 24, 2021·Journal of Environmental Management·Ankita DattaSudip Mitra
Jun 21, 2020·Journal of Environmental Management·Avelino Núñez-DelgadoMuhammad Shaaban
Jul 13, 2021·Journal of Hazardous Materials·Guangcai YinHailong Wang
Sep 2, 2021·The Science of the Total Environment·Xiaolian WuHailong Wang

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