Journal ArticleDOI
Fe-Modified Common Reed Biochar Reduced Cadmium (Cd) Mobility and Enhanced Microbial Activity in a Contaminated Calcareous Soil
Neda Moradi,Akbar Karimi +1 more
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In this paper, the effect of raw biochar and iron-modified biochar derived from common reed was evaluated, as was its effect on soil microbial activity in contaminated calcareous soil.Abstract:
The immobilization of soil cadmium (Cd) by biochar and modified biochar is an eco-friendly and cost-effective strategy. In the current study, the effect of raw biochar (BC) and iron-modified biochar (Fe-BC) derived from common reed on the fractionation and mobility of Cd was evaluated, as was its effect on soil microbial activity in contaminated calcareous soil. Treatments involved a combination of two factors: type of biochar (CK: Control, BC, and Fe-BC) and soil Cd concentration (0, 15, and 30 mg kg−1). Treatments were applied to the soil and incubated for 90 days. The application of both biochars increased soil pH and soil organic carbon content (16.6–48.0%), microbial biomass carbon (40.5–75.1%), basal respiration (16.6–48.0%), substrate-induced respiration (12.4–41.9), and dehydrogenase activity (25.5–102.1%), while it reduced diethylene-triamine pentaacetic acid (DTPA)-extractable Cd (22.1–39.5%). The addition biochars, particularly Fe-BC, prominently decreased the concentration of exchangeable and carbonate fractions and increased the concentration of Fe-MnOx, as well as the organic and residual fractions of Cd in the soil. Moreover, relative to the control treatment, the incorporation of raw and Fe-modified biochar into 30 mg kg−1 Cd-spiked soil significantly decreased the Cd mobility factor (MF) value by 14.5 and 21.8%, respectively. Fe-modified biochar had a more significant impact than raw biochar on the immobilization of Cd in the soil, and its improved soil microbial activity to a greater extent. Overall, the findings indicate that Fe-modified biochar derived from common reed can immobilize Cd and improve soil microbial attributes in contaminated calcareous soil. Therefore, it can be used as an eco-friendly amendment for restoring Cd-contaminated calcareous soil.read more
Citations
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Journal ArticleDOI
Cd immobilization and soil quality under Fe–modified biochar in weakly alkaline soil
TL;DR: In this article, the effect of Fe-modified biochar on Cd bioavailability in soils and uptake by maize, soil aggregate distribution and stability, and microbial community composition in weakly alkaline Cd-contaminated soil was investigated.
Journal ArticleDOI
Biochar for the Management of Nutrient Impoverished and Metal Contaminated Soils: Preparation, Applications, and Prospects
TL;DR: The use of biochar can improve the physicochemical and biological properties of soil, which results in enhanced crop growth and productivity under normal conditions, as well as in soils that pose abiotic stresses because of the presence of heavy metals, salt, or organic contaminants as discussed by the authors.
Journal ArticleDOI
Modified Biochars and Their Effects on Soil Quality: A Review
TL;DR: In this paper , the role of modified biochar (BC) in improving soil quality is investigated, and the authors provide a basis for effective practical approaches to modify BCs for improving the soil quality.
Peer ReviewDOI
A Comprehensive Literature Review on Cadmium (Cd) Status in the Soil Environment and Its Immobilization by Biochar-Based Materials
TL;DR: A review of the knowledge of biochar as a promising amendment for the decontamination of Cd(II)-polluted soils is presented in this article , where the authors summarize the chemical forms, release sources, and maximum permissible limits of Cadmium in soil.
Journal ArticleDOI
Engineered biochar effects on soil physicochemical properties and biota communities: A critical review.
TL;DR: In this paper , a systematic review of the effects of EBCs on soil physicochemical properties and biota communities is presented, and suggestions and perspectives for future research on EBC are put forward.
References
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Journal ArticleDOI
Sequential extraction procedure for the speciation of particulate trace metals
TL;DR: In this paper, an analytical procedure involving sequential chemicai extractions was developed for the partitioning of particulate trace metals (Cd, Co, Cu, Ni, Pb, Zn, Fe, and Mn) into five fractions: exchangeable, bound to carbonates, binding to Fe-Mn oxides and bound to organic matter.
BookDOI
Soil Sampling and Methods of Analysis
M.R. Carter,Edward G. Gregorich +1 more
TL;DR: In this paper, the authors present a set of methods for soil sampling and analysis, such as: N.H.Hendershot, H.M.Hettiarachchi, C.C.De Freitas Arbuscular Mycorrhiza, Y.K.Soon and W.J.
Journal ArticleDOI
Biochar as a sorbent for contaminant management in soil and water: a review.
Mahtab Ahmad,Anushka Upamali Rajapaksha,Jung Eun Lim,Ming Zhang,Nanthi Bolan,Dinesh Mohan,Meththika Vithanage,Sang Soo Lee,Yong Sik Ok,Yong Sik Ok,Yong Sik Ok +10 more
TL;DR: Due to complexity of soil-water system in nature, the effectiveness of biochars on remediation of various organic/inorganic contaminants is still uncertain.
Book
Methods in Applied Soil Microbiology and Biochemistry
Kassem Alef,Paolo Nannipieri +1 more
TL;DR: Quality Control and Quality Assurance in Applied Soil Microbiology and Biochemistry in applied soil microbiology and biochemistry and field methods.