Compound Biochar Mixing for Multi-Bisphenol Water Removal
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Solution Overview
Problem
Existing methods for removing bisphenol pollutants like BPA and TBBPA from water bodies are limited to single-material treatments, leading to high costs, low efficiency, and inaccurate predictions of removal capacity due to adsorption and desorption processes, making large-scale use difficult.
Innovation Solution
A compound biochar material composed of raw, ball-milled, and iron-modified biochars, optimized through linear programming, is used to simultaneously remove multiple bisphenol pollutants by calculating optimal mixing ratios based on solid loading amounts, ensuring efficient and accurate removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If single-material treatment methods are used to remove bisphenol pollutants, then the treatment process is simple, but the removal efficiency is low and material consumption is high
Solution Approach 1:
The patent combines multiple types of biochar materials (raw biochar, ball-milled modified biochar, and iron-modified biochar) into a compound material system. This merging of different materials with complementary properties enables simultaneous removal of multiple bisphenol pollutants through different mechanisms (physical adsorption, chemical complexation), thereby improving removal efficiency while optimizing material utilization
Solution Approach 2:
The invention creates a composite biochar material comprising raw biochar, ball-milled modified biochar, and iron-modified biochar in specific ratios. This composite structure integrates the advantages of each component: raw biochar provides basic adsorption capacity, ball-milling increases surface area and porosity, and iron modification enhances chemical complexation ability with bisphenol pollutants, achieving synergistic removal effect
2Adaptability or versatility
If multiple separate treatment methods are used to remove different bisphenol pollutants, then the removal coverage is comprehensive, but the treatment process becomes complex and costly
Solution Approach 1:
The compound biochar material is designed to perform multiple functions simultaneously: it can remove different types of bisphenol pollutants (BPA, TBBPA, BADGE, etc.) through a single treatment process. The material combines physical adsorption, chemical complexation, and catalytic oxidation capabilities, enabling one system to handle diverse pollutants that would otherwise require multiple separate treatment methods
Solution Approach 2:
The patent merges multiple treatment mechanisms (physical adsorption by biochar, chemical complexation by iron oxide, catalytic oxidation) into a single integrated compound material. This allows simultaneous removal of various bisphenol pollutants through one treatment process, simplifying the overall treatment system while maintaining comprehensive removal coverage
3Measurement precision
If traditional adsorption amount prediction methods are used, then the calculation is simple, but the prediction accuracy is low due to adsorption and desorption processes
Solution Approach 1:
The patent introduces a feedback mechanism in the prediction model by considering both adsorption and desorption processes. The solid loading amount calculation incorporates the dynamic equilibrium between adsorption and desorption, using the formula Qs = Qe - Qd, where Qe is the adsorption amount and Qd is the desorption amount. This feedback approach significantly improves prediction accuracy compared to simple adsorption-only models
Solution Approach 2:
The invention changes the prediction parameter from simple adsorption amount to solid loading amount, which accounts for the net removal capacity considering both adsorption and desorption. This parameter transformation (from Qe to Qs = Qe - Qd) provides a more accurate representation of the actual pollutant removal effectiveness in dynamic water treatment conditions
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 compound biochar material allows for synchronous removal of various bisphenol pollutants with reduced material consumption and costs, improving treatment efficiency and accuracy of pollutant removal predictions, facilitating large-scale applications.
Implementation Method 1
a porous carbon material, with a sizable specific surface area and high hydrophobicity, is considered as an excellent removal agent for hydrophobic organic pollutants
Implementation Method 2
ball-milled modified biochar
Implementation Method 3
iron-modified biochar
Data Source
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AI summary
Disclosed in the present disclosure are a method for efficiently removing bisphenol pollutants from a water body and a compound biochar material. The method includes: A, preparing three types of biochar materials, that is, biochar (BC), ball-milled modified biochar (BBC), and iron oxide modified biochar (BC@Fe3O4); B, computing maximum solid loading amounts per unit weight of the three types of biochar materials for the pollutants in wastewater separately; C, measuring contents of the bisphenol pollutants in a wastewater sample; D, computing an optimal compounding ratio of each type of biochar material by means of a linear programming algorithm and by taking a minimum total weight of the three types of biochar materials after compounding as an objective function and taking a maximum total solid loading amount not less than the contents of the various bisphenol pollutants in the wastewater as a constraint condition; and E, preparing a compound biochar material according to the optimal compounding ratio, and adding the compound biochar material to the wastewater at once to remove the various bisphenol pollutants from the water body synchronously. The compound biochar material is a uniform mixture prepared by compounding at least two types of biochar materials according to an optimal compounding ratio.