Real-time monitoring as an adaptive strategy towards green treatment of textile effluent using biosorbent from Acalypha indica

Abstract

Performance of green treatment systems such as adsorption to treat textile effluents often suffers lack of longevity and efficiency due to the presence of complex compounds of varying reactivity. There is scope for improving the operational efficiency of such processes using real-time monitoring systems. The present study aims to evaluate the performance of an activated biosorbent prepared from the leaves of Acalypha indica for treating textile industry effluent by simulating process control with real-time monitoring. Batch experiments were performed with synthetic and real-time dye effluents to identify the optimum conditions (pH = 3.0, dosage = 1.0 g/L; time = 1 h) for the highest adsorption capacity (6 mg g−1 and 2 mg g−1). The evaluation of physical parameters suggested best fit for Freundlich isotherm model and pseudo-second order kinetic model. The LabVIEW-based simulation control system enabled close monitoring of pH and temperature during the process. Based on the inputs, an alteration of initial pH has resulted in substantial reduction in COD (73.91%), turbidity (52.43%) and TDS (19.43%). The average incremental increase was highest for COD (45.80 ± 0.06%) compared to TDS (10.13 ± 0.06%) and turbidity (−1.74 ± 0.03%) for varying dosage (3 g–11 g). The proposed framework for incorporating process control-based monitoring system can help achieving better performance.

Development of a Multicomponent Adsorption Isotherm Equation and Its Validation by Modeling

“…Various contaminants in the solution introduce a complex interplay affecting ion diffusion and the driving forces to reach the active sites. Depending on the specific interactions, this complexity can lead to antagonistic or synergistic mechanisms. , Several critical factors are considered to understand model mechanisms, including molecular size, ionic radii, hydrated radii, and diffusivities, which influence the competition among different species within the solution. The interaction between the adsorbent surface and the mobility of adsorbates toward active sites is addressed by this model.…”

A Study Into the Alteration of Physical and Chemical Characteristics of Activated Carbon Surface for Purifying Water

“…The most widely acknowledged technique of portable water filtration is the use of activated carbon. Insecticides, herbicides, chlorinated hydrocarbons, and phenols are all removed from the water supply (Sivapragasam et al, 2021). It's also utilised in reaction catalysis, electroplating baths, besides aquarium water filters to remove pollutants.…”

Adsorption kinetics, isotherms and thermodynamics of aromatic amino acids in feather hydrolysate onto modified activated carbon

“…It is inevitable to accept the associated advantage and disadvantages of available treatment techniques, such as physical methods such as adsorption and membrane separation, and chemical processes such as coagulation, chemical oxidation, Froth-flotation, oxidation, and solvent. [1][2][3] The adsorption method has received a lot of attention in scientific research because of its good environmental and economic benefits. [4][5][6] Tyrosine (Tyr) and phenylalanine (Phe) have benzene ring structure with weak polarity, and their adsorption on solid surfaces is increasingly studied, most of the current methods employed for the removal of AA from protein hydrolysates are based on the adsorption on activated carbon, polymeric resins, zeolites and ion exchangers.…”

“…In the traditional feather hydrolyzing amino acid industry, the cysteine, arginine and leucine are easily separated and purified to obtain a pure product, and other mixed amino acids are difficult to be utilized. It is inevitable to accept the associated advantage and disadvantages of available treatment techniques, such as physical methods such as adsorption and membrane separation, and chemical processes such as coagulation, chemical oxidation, Froth‐flotation, oxidation, and solvent 1–3 . The adsorption method has received a lot of attention in scientific research because of its good environmental and economic benefits 4–6 …”