Biochar production from organic wastes with nano fertilizer for soil enhancement

Overview

This research project focuses on producing biochar from agricultural and sawdust wastes and combining it with nano fertilizer to enhance soil physicochemical properties. Biochar is a stable form of charcoal created by heating organic materials under low-oxygen conditions. It serves as a soil conditioner, fertilizer, and a sustainable means of carbon storage. The carbon in biochar is more chemically, physically, and biologically stable than the original plant residue, allowing it to lock up carbon that might otherwise be released as carbon dioxide.

The project addresses two interconnected challenges: managing agricultural and organic wastes and reducing the environmental harm caused by conventional fertilizers. By converting waste materials into biochar and pairing them with nano fertilizers, the research aims to increase agricultural productivity while protecting the environment. Nano fertilizers offer improved nutrient use efficiency, deeper penetration into plant roots and leaves, and enhanced tolerance to abiotic stress, all while reducing groundwater pollution and eutrophication.

Technical specifications

Biochar production and characterization:

• Biochar will be produced from agricultural residues and sawdust wastes
• Wastes will be prepared and processed before charring under controlled low-oxygen conditions
• Characteristics of the resulting biochar will be examined to determine physical and chemical properties

Nano fertilizer development:

• Nano urea manufactured using rotating surfaces for faster reaction and reduced residence times
• Phosphorus and potassium nano fertilizers prepared using zeolite as a carrier material at laboratory scale
• X-ray diffraction (XRD) analysis used to characterize and confirm nano fertilizer incorporation

Soil evaluation approach:

• Biochar will be applied to soils from different locations in central province with nano fertilizer
• Incubation experiments conducted over 90 days comparing treated soils against controls
• Assessment of macroaggregate formation, saturated hydraulic conductivity, water retention function parameters, and saturated and residual water contents

Technology readiness level

This research is at an early to mid-stage development level. The biochar production process and nano fertilizer synthesis methods have been outlined, with laboratory-scale preparation planned for phosphorus and potassium nano fertilizers using zeolite carriers. Future validation includes full characterization of biochar properties, confirmation of nano fertilizer composition through XRD analysis, and 90-day incubation experiments to evaluate soil responses. The project represents applied research that could lead to practical solutions for waste management and sustainable agriculture, but further development and field validation would be needed before commercial deployment.