Copper Augmented Biochar for Chromium Removal
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Solution Overview
Problem
Current methods are inadequate for efficiently removing chromium from wastewater, which poses environmental and health risks due to its carcinogenicity and bioaccumulation potential.
Innovation Solution
A method involving the use of copper augmented biochar, prepared by pyrolyzing wheat straw and adding copper, is employed to contact with wastewater, achieving high chromium removal efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods are used to remove chromium from wastewater, then the process is simpler, but the removal efficiency is insufficient
Solution Approach 1:
The patent uses copper-augmented biochar, which is a composite material combining biochar (derived from pyrolyzed agricultural waste) with copper nanoparticles or copper compounds. This composite structure synergistically enhances the chromium removal capacity beyond what either material could achieve alone, directly resolving the contradiction by improving removal efficiency through material composition rather than process complexity
Solution Approach 2:
The biochar component provides a porous structure with high surface area and numerous active sites for chromium adsorption. The porosity is developed through controlled pyrolysis of biomass, creating a network of micropores and mesopores that increase the contact area between the adsorbent and chromium ions in wastewater, thereby enhancing removal efficiency without requiring complex equipment
2Object-affected harmful factors
If chromium removal is not efficient, then the process is faster, but environmental and health hazards remain
Solution Approach 1:
The patent replaces complex mechanical or chemical treatment systems with a passive adsorption-based approach using copper-augmented biochar. The removal mechanism relies on natural adsorption phenomena (physisorption and chemisorption) rather than energy-intensive mechanical processes, achieving high chromium removal efficiency (90-99%) while minimizing operational complexity and environmental impact
Solution Approach 2:
The biochar is prepared from inexpensive agricultural waste materials through simple pyrolysis, creating a low-cost adsorbent that can be easily discarded after use. This disposable approach eliminates the need for complex regeneration systems while maintaining high removal efficiency, directly addressing the hazard reduction goal without productivity compromise
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The copper augmented biochar effectively removes chromium from wastewater with up to 99% efficiency within 1 hour, significantly reducing environmental and health hazards.
Implementation Method 1
contacting the copper augmented biochar with the wastewater to remove chromium from the wastewater
Implementation Method 2
pyrolyzing wheat straw to provide a biochar
Data Source
AI summary
A method of chromium removal from wastewater comprising providing a copper augmented biochar and contacting the copper augmented biochar with the wastewater to remove chromium from the wastewater. The copper augmented biochar can remove chromium from wastewater with about 99% efficiency in about 1 hour.