Modified Biochars and Their Effects on Soil Quality: A Review

Biochar (BC) has attracted attention due to its impacts on soil quality by enhancing soil fertility, carbon storage and contaminants immobilization. BC also induces changes in microbial community structure and enhances crop productivity in long term scenarios compared to many other organic amendment...

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Bibliographic Details
Published in:Environments (Basel, Switzerland) Switzerland), 2022-05, Vol.9 (5), p.60
Main Authors: Hafeez, Abdul, Pan, Taowen, Tian, Jihui, Cai, Kunzheng
Format: Article
Language:English
Subjects:
Acidification
Aggregates
Agricultural production
Biomass
Carbon
Carbon sequestration
Cation exchange
Cation exchanging
CEC
Charcoal
Chemical properties
Community structure
Contaminants
Corn
Crop production
Electron conductivity
Environmental conditions
Functional groups
Gas exchange
Hydraulics
Immobilization
Infiltration rate
microbial community
Microorganisms
modified biochar
Organic matter
Organic soils
Particle size
physiochemical properties
Plant growth
Pore size
Porosity
Productivity
Raw materials
Retention
Rice
Soil amendment
Soil chemistry
Soil contamination
Soil fertility
Soil improvement
Soil porosity
Soil properties
Soil quality
Soil structure
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Summary:Biochar (BC) has attracted attention due to its impacts on soil quality by enhancing soil fertility, carbon storage and contaminants immobilization. BC also induces changes in microbial community structure and enhances crop productivity in long term scenarios compared to many other organic amendments. However, information related to the role of modified BCs in altering the soil quality is still scarce. BC can be modified by using physical, chemical and microbial methods. Modified BC can change the functional groups, pore size, pore structure, surface area and chemical properties of soil, which plays a key role in changing the soil quality. The addition of modified BCs as soil amendment increased soil CEC (cation exchange capacity), EC (electron conductivity), pH, organic matter, hydraulic conductivity, soil porosity, infiltration rate, microbial activities (enzymes and community), nutrient profile and gas exchange properties, but it varies according to the soil structure and pervading environmental conditions. This study provides a basis for effective practical approaches to modifying BCs for improving soil quality.
ISSN:2076-3298
2076-3298
DOI:10.3390/environments9050060