Dye Removal Capacity Research Articles

Unveiling the dye adsorption capability of Moringa oleifera functionalized hybrid porous MOF–GO composites: in vitro and in silico ecotoxicity assessment via antibacterial and molecular docking studies

Sustainable and eco-friendly MOF–GO functionalized composites demonstrated high adsorption capacity for dye removal from wastewater, offering an environmentally friendly solution.

Resource recovery from palm kernel shell and its application for wastewater treatment: a circular economy approach

In this study, cationic Methylene Blue (MB) dye removal was investigated through a batch adsorption process using a ternary adsorbent developed from palm oil biomass, graphene oxide, and iron oxide (M-PKSGO). Box-Behnken Design (BBD) was applied for modelling and analyzing the effects of independent operational parameters including pH of initial MB dye solution, M-PKSGO dosage and adsorption time on dye removal and adsorption capacity. The experimental results show an adsorption capacity of 82.7 mg/g was achieved using 1 g/L of M-PKSGO with 135 min at pH 11. Hence, the M-PKSGO composite is proven as an effective adsorbent for cationic dye removal from wastewater. The utilization of biomass from the palm oil industries promotes a circular economy via resource recovery activities. Overall, this work brings to light the opportunities created by green adsorbents in promoting a circular economy and stimulates further research and development in this highly pertinent field.

In situ polyaniline polymerization on electrospun cellulose acetate nanofibers derived from recycled waste filter butts of cigarettes for the enhanced removal of methyl orange and rhodamine

In this study, waste cigarette butts (CBs) were processed to produce electrospun cellulose acetate (CA) nanofibrous membranes modified with polyaniline (PANI) via chemical oxidation polymerization. This cost-effective method of preparing CA coated with PANI was initially investigated by comparing CA, CA-PANI, and CA-dPANI (as deprotonated PANI) for the rapid adsorption of cationic and anionic dyes. The results depicted CA-PANI with the highest dye removal capacity. As the optimum material, CA-PANI was applied to remove methyl orange (MO) and rhodamine chloride (RC) dye from an aqueous phase. Essential factors: contact time, solution pH, initial dye concentration, nanofiber dosage, and temperature of solution were evaluated with maximum equilibrium adsorption capacity and removal percentage achieved for MO as 24.87 mg/g and 99 %, for RC as 6.93 mg/g and 55 %, respectively. The adsorptive experimental data for both dyes best fitted the pseudo-second-order kinetic, intraparticle diffusion, and Freundlich models. Moreover, the thermodynamics result indicated the adsorption processes were exothermic and spontaneous in nature. Reusability studies also showed the stable performance of CA-PANI material for up to 7 adsorption-desorption cycles. The high dye removal efficiency suggests that the adsorbent material in the water filtration of azo dyes.

Hierarchical Porous Activated Carbon from Wheat Bran Agro-Waste: Applications in Carbon Dioxide Capture, Dye Removal, Oxygen and Hydrogen Evolution Reactions.

This work reports an efficient method for facile synthesis of hierarchically porous carbon (WB-AC) utilizing wheat bran waste. Obtained carbon showed 2.47 mmol g-1 CO2 capture capacity with good CO2 /N2 selectivity and 27.35 to 29.90 kJ mol-1 isosteric heat of adsorption. Rapid removal of MO dye was observed with a capacity of ~555 mg g-1 . Moreover, WB-AC demonstrated a good OER activity with 0.35 V low overpotential at 5 mA cm-2 and a Tafel slope of 115 mV dec-1 . It also exhibited high electrocatalytic HER activity with 57 mV overpotential at 10 mA cm-2 and a Tafel slope of 82.6 mV dec-1 . The large SSA (757 m2 g-1 ) and total pore volume (0.3696 cm3 g-1 ) result from N2 activation contributing to selective CO2 uptake, high and rapid dye removal capacity and superior electrochemical activity (OER/HER), suggesting the use of WB-AC as cost effective adsorbent and metal free electrocatalyst.

Sustainable economic production of silica nanoparticles from rice husks for adsorptive removal of anionic and cationic dyes

The present study explores a novel microwave-assisted (MW) approach for advancing the sol-gel synthesis of silica nanoparticles from rice husk (RSN) to mitigate methylene blue (MB) and congo red (CR). According to physico-chemical and yield analysis, 50 min of MW calcination produced a high yield of 92 % RSN (RSN50) with a high surface area (208 m2/g). Under optimized conditions, the maximum adsorption capacities of MB and CR on RSN50 were 48.1 mg/g (at pH 5.6, Langmuir model) and 58.5 mg/g (at pH 2, Hills model), respectively. The MB adsorption kinetics on RSN50 followed a pseudo-second-order indicating chemisorption while CR adsorption on RSN50 followed a pseudo-first-order mechanism and positive ΔG signifying non-spontaneity. A regeneration study for 5 consecutive cycles showed retention of % dye removal capacity. The cost assessment showed a profit when compared to commercial silica nanoparticles proposing an efficient, economical, and sustainable substitute for varied applications.

Effect of Cr cations addition on the structural, morphological, optical, and photocatalytic properties of Er-doped ZnO structures

In this work, we have investigated the effect of Cr3+ cations addition on the structural, morphological, optical, and photocatalytic properties of Er-doped ZnO structures. The Zn(1-(x-y))ErxCryO compound, where [(x; y) = (0.00; 0.00), (0.02; 0.01), (0.02; 0.02) and (0.02; 0.03)] was synthesized by the co-precipitation method and thermally treated at 100 °C for 6 h. The structural study showed that the dopant cations concentrations, cause variations in lattice constants, and increase the crystallite size and the strain in the ZnO crystal lattice. The structural atomic disorder was confirmed by Raman and photoluminescence spectroscopies, with VO, VO+, and VO++ type oxygen vacancy defects dominating. The samples exhibited different morphologies depending on the dopant concentration (plates-like, irregular hemispherical particles, and octahedrons-like structures). In the photocatalytic test, the methylene blue (MB) dye degradation under UV irradiation increased as a function of Cr3+ cations concentration, achieving a degradation rate of 37.4 ± 1.9% for the sample containing 2% of Er3+ cations and 3% of Cr3+ cations. In addition, the MB dye removal capacity by the Zn(1-(x-y))ErxCryO compound was incremented to above 85% using an optimized H2O2 concentration. Finally, the irradiated solution did not show toxicity against Artemia salina, indicating that the intermediate photoproducts formed are not toxic.

Adsorption of anionic methyl orange dye by polyaniline, poly(o‐methylaniline) and poly(o‐methoxyaniline)

AbstractThis study reports the effect of substituents in the ortho position of polyaniline on the adsorption capacity to remove the anionic dye methyl orange (MO) from an aqueous solution. The aim of this study is the synthesis of polyaniline (PANI) and its derivatives, poly‐o‐methylaniline (poly‐o‐toluidine, POT) and poly‐o‐methoxyaniline (poly‐o‐anisidine, POA) for the adsorption removal of MO dye. All polymers were obtained by oxidative polymerization of the corresponding monomers and characterized by scanning electron microscopy (SEM) and infrared spectroscopy (IR). The average particle size of the polymer was about 200 nm. The effect of various parameters such as pH, temperature, adsorption time and initial concentration was analyzed. It was found that the adsorption capacity for dye removal increases from 50.68 to 222.56 mg g−1 for PANI, from 16.89 to 66.57 mg g−1 for POT, and from 97.26 to 532.54 mg g−1 for POA with an increase in the initial dye concentration from 5 up to 50 mg L−1. For all polymers, the equilibrium state of MO adsorption was reached in 50 min. The results showed that MO adsorption on PANI, POT, and POA is well described by a pseudo second order kinetic model. Isothermal studies have shown that adsorption is in good agreement with the Langmuir isotherm model, as evidenced by higher values of correlation coefficients. Based on the data of thermodynamic studies, it was concluded that MO adsorption on PANI, POT, and POA is spontaneous and endothermic.

Sonochemical synthesis of cobalt (II) metal–organic framework (TMU‐10)/polypyrrole nanocomposites with high adsorption capacity for dye removal from water

AbstractIn this study, Tarbiat Modares University‐10/poly pyrrole (TMU‐10/PPy), a water‐stable metal–organic framework/polymer composite, was successfully fabricated and applied as adsorbent for removal of methyl red from contaminated water. The pyrrole obtained novel‐structured TMU‐10@PPy composite showed high efficiency in removing the methyl red. Several variables affecting the adsorption efficiency of methyl red, that is, pH, amount of adsorbent, contact times, and the salt additive, were investigated and optimized. The best working conditions were as follows: sample pH, 5; amount of sorbent, 4 mg; contact time, 9 min; salt additive, 2% (wt/vol). The maximum adsorption capacity of TMU‐10@PPy toward methyl red was 101.01 mg/g. The adsorption kinetics and isotherms of TMU‐10@PPy were consistent with a pseudo‐second‐order kinetic model and the Langmuir isotherm model. It was found that TMU‐10@PPy exhibited excellent reusability and had the potential for treating dye‐polluted wastewaters.

Facile synthesis and life cycle assessment of Iron oxide-Douglas fir biochar hybrid for anionic dye removal from water

Development of low-cost and safe IONPs-based biochar hybrids with efficient multiple pollutant removal abilities is critical. In the present study, we studied the potential of an Fe3O4-modified wood-based biochar (FDBC) composite to remove an aqueous anionic dye, bromophenol blue (BPB) via simple magnets. Smaller surface area (1.5 times) and a smaller pore volume (∼2 times) of FDBC over the original biochar (DBC) does not impede the BPB uptake by FDBC. The Langmuir monolayer BPB adsorption capacities of FDBC and DBC are 448.0 and 451.0 mg/g (removal percentages, 89.8 % vs. 90.3 %) (adsorbent dose 50 mg, 25 mL of 1000 mg/L BPB concentration, 2 h, pH 5.0). The larger surface area (248 m2/g) and abundant nano Fe3O4 (11.0 nm) sites account for FDBC's excellent BPB removal compared to recent IONPs-based adsorbents. At pH 5.0–8.0, the BPB is bound to the FDBC (points of zero charge = 8.2) via H-bonding and π-π stacking, as confirmed by pH, desorption, and thermodynamic studies. Compared to NaOH and H2O2, methanol desorbs more BPB from the spent adsorbent at pH 7.0. Moreover, this composite removes even the BPB residuals from real wastewater, becoming an ideal adsorbent for BPB removal. A limited life cycle assessment of FDBC's synthesis revealed a higher impact for global warming (2.38 kg CO2eq) per kg of the adsorbent, whereas the lower impacts for ozone depletion, particulate matter emissions, and air quality. The FDBC is more economical because of its green and facile synthesis, excellent dye removal capacity, easy and fast recovery. Efficient multiple dye uptake of FDBC produces large concentration of recovered dyes, which can be possibly reused in various economic applications.

Valorization of lignocellulosic solid waste obtained from essential oil industry for bio-oil production and dye removal

Abstract This research underscores the potential of utilizing carrot seed waste and its derived biochar as effective solutions for waste management and wastewater treatment applications. This waste is thoroughly characterized for its chemical, thermal, and morphological properties. It is found to be rich in carbon and cellulose, proved suitable for pyrolysis, yielding 25% biochar and 45% bio-oil, with the latter containing carboxylic acids and hydrocarbons. Biochar, characterized by a high surface area of around 300 m2/g, micro- and mesopores, and the presence of metal oxides, demonstrated outstanding adsorption properties. Biochar shows superior performance compared to raw carrot seed waste, mainly in the context of methylene blue dye removal, obtaining an impressive removal efficiency of 99%. Subsequently, optimization of pH, adsorbent dosage, dye concentration, and reaction temperature is carried out using biochar as the adsorbent to maximize dye removal and adsorption capacity, whereas adsorption kinetics follows pseudo-first-order kinetics.

Evaluation of Lacc134 Oxidoreductase of Ganoderma multistipitatum in Detoxification of Dye Wastewater under Different Nutritional Conditions

In the present study, we investigated the effects of different carbon sources (glucose, sucrose, and maltose) on laccase production from mycelium of Ganoderma multistipitatum grown on malt extract agar plates. The preliminary screening test was performed on the guaiacol plate, where a maroon brown zone formed after laccase oxidation. A few pure mycelial discs of Ganoderma species were transferred into submerged fermentation nutrient broth. The nutrient medium of submerged fermentation at 20 g of glucose revealed the highest laccase activities (2300 U/L) than other carbon sources. The interesting results also shown by inorganic NaNO3 in the production of maximum laccase (7800 ± 1.1 U/L). The organic nitrogen inducer, namely yeast extract, exhibited 5834 U/L laccase activity and a potential source of laccase secretion. The results concluded that C and N inducers enhanced the laccase production. This production process is eco-friendly and effective in the removal of dye from water. Laccase from the cultural broth was partially purified by SDS-PAGE for molecular weight determination, while Native-PAGE confirmed the laccase band after staining with guaiacol. The Km and Vmax values of Lacc134 were 1.658 mm and 2.452 mM min−1, respectively. The Lacc134 of this study effectively removed the Remazol Brilliant Blue R (RBBR) dye (extensively used in textile industries and wastewater). For dye removal capacity, 2.0 mg, 4.0 mg, 5.0 mg, and 6.0 mg were used, from which 6.0 mg was most effective in removal (85% and 88%) dye concentration in 1st and 2nd h interval treatment, respectively. Total organic carbon (TOC) quantity after dye removal percentage in the first- and second-hour time interval was 62% and 89%, respectively, at 30 g glucose. According to the experimental finding of this study, the breakdown products catalyzed by Lacc134 are less hazardous due to lower molecular weight than the dye itself.

Curcumin-loaded hydroxyapatite nanoparticles for enriched removal of organic pollutants and inhibition of dual-species biofilm formation

The resistance of staphylococcus aureus and Acinetobacter baumannii to antimicrobial agents results in chronic infections, making removing contaminants from wastewater essential for environmental remediation. Removing hazardous pollutants from wastewater and inhibiting biofilm formation is important for environmental remediation. This study effectively built biocompatible curcumin-loaded hydroxyapatite nanoparticles (Cur-HAp NPs) using a simple in-situ precipitation technique. Various analytical characterization techniques were used to evaluate the structural, morphological, and chemical composition of the synthesized NPs. Combining a highly bioactive natural curcumin pigment with hydroxyapatite NPs could maintain its pharmacological activity and exhibit a sustained release profile of curcumin. The antibiofilm activities against single and mixed dual species of S. aureus and A. baumannii were evaluated using crystal violet staining techniques. Excellent antibiofilm activities were demonstrated by Cur-HAp NPs against S. aureus, A. baumannii, and mixed dual species, with respective efficiency percentages of 76.7, 85.6, and 68.8 % inhibition upon treatment, respectively. In addition, Cur-HAp NPs demonstrated excellent dye adsorption against Congo red dye by approximately 95.6 %. Cur-HAp could absorb up to 112.4 mg/g of dye at a time. Negative ΔG value (−1.372 kJ mol−1) indicates the spontaneous and feasible dye absorption onto Cur-HAp. The Langmuir adsorption isotherm and pseudo-second-order equation provided the best fit for the Cur-HAp NPs. Therefore, the sustained drug release behavior of Cur-HAp NPs is a promising candidate for combatting antibiofilm activity and dye removal capacity.

FABRICATION OF POLYETHERSULFONE – POLYITACONIC ACID (PES-PIA) MEMBRANE FOR REMOVAL OF REACTIVE RED 120

The hazardous and mutagenic properties of dye effluents discharged into water bodies have led to the development of membrane separation for water treatment. pH-sensitive membranes have been widely employed as they exhibit remarkable improvements in the permeability and separation performance of polyethersulfone (PES) membranes. In this study, the PES membranes incorporated with polyvinylpyrrolidone (PVP), pluronic F108, and polyitaconic acid (PIA) by phase inversion were fabricated and characterized. PIA at different weight percentages were introduced into the PES dope solution via blending technique. The dye removal capacity, chemical composition, and thermal stability were characterized using UV-Vis spectrometer, fourier transform infrared (FTIR), and thermogravimetric analyzer (TGA) respectively. The fabricated membranes showed excellent rejection of reactive red 120 (RR120), which is an anionic dye. The study evaluated the membrane performance of pure water permeation (PWP) along with RR120 dye rejection. M20-PPI1, with a weight percentage of PVP/Pluronic F108/PIA; 3%/1.5%/0.25%, exhibited the highest water flux of 12 L/m2h and dye rejection of 82% at pH value of 2 for RR120 dye rejection. The findings propose that M20-PPI1 is an effective pH-sensitive membrane for dye rejection.

Utility of Crosslinking a Lignocellulosic Waste Polymer for Fast and Efficient Adsorption of Bimacid Red ETL dye

A novel quaternized cross-linked lignocellulosic waste-sebacoyle-trietanolamine (QSB) polymer with excellent adsorption performance for Bimacid Red ETL dye was synthesized by a one-step reaction. Kinetic, thermodynamic, and adsorption isotherm studies were conducted to evaluate the sorption process of Bimacid Red ETL dye on the synthesized material. The experiments have demonstrated that the adsorbent/adsorbate system studied followed very fast kinetics so that the equilibrium is reached after 20 minutes of contact time. In addition, the process is controlled by the pseudo-second-order model, and the isotherm is satisfactorily described by the Langmuir mathematical model. Furthermore, the thermodynamic study revealed that the adsorption process is spontaneous and exothermic. Under ideal conditions, the as-prepared material showed a maximum dye removal capacity of 200 mg/g for the Bimacid Red ETL dye. The present work contributes to the development of chemically functionalized lignocellulosic waste materials for application in environmental protection.

Uncovering the flocculating and dye recovery potential of pH‐responsive bioflocculant produced by Bacillus thuringiensis

AbstractIn this study, the decolorization of anionic dyes was investigated using a novel pH‐responsive bioflocculant (named BF‐TWB10) derived by Bacillus thuringiensis. The BF‐TWB10 showed a dye removal capacity of 99.06% for C.I. Direct Red 224 (DR 224) and 99.22% for C.I. Acid Black 172 (AB 172) at pH 2.0. Its dye removal capacity decreased with increasing pH and the zeta potential analysis revealed that the dye particles exhibited stronger dispersion forces at higher pH levels. Owing to this pH‐responsive property, BF‐TWB10 could be utilized to recover anionic dyes. The recovery rate was 83.46% for DR 224 and 76.46% for AB 172. We then attempted to concentrate the regenerated dye solutions by regenerating the dye‐loaded floc in one‐tenth of its original volume. The concentration multiple of the regenerated dye solutions reached 8.220 and 7.758 times for DR 224 and AB 172, respectively. In addition, the recovery rate of both dyes increased after three cycles of decolorization/regeneration. The results suggested that BF‐TWB10 has potential not only to remediate dyes from textile effluent but also to recover dyestuffs.

Simple Preparation of Lignin-Based Phenolic Resin Carbon and Its Efficient Adsorption of Congo Red

Biomass porous carbon is a low-cost, environmentally friendly material with no secondary pollution and has great potential in the field of dye pollutant adsorption. In this work, we used lignin, a renewable resource abundant in nature, to completely replace phenol and develop a lignin-based phenolic resin carbon (LPFC) adsorbent with high dye removal capacity, high recyclability, and low production cost. The samples were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and Raman spectroscopy. Then the effects of adsorbent dosage (1 g/L, 2 g/L, 3 g/L, 4 g/L, and 5 g/L), temperature (30 °C, 45 °C, and 60 °C), initial dye concentration (100, 200, 300, 400, 500, 600, 700, and 800 mg/L), and pH (3, 4, 6, 8, 10, and 12) on the adsorption capacity were investigated during the adsorption process. The experimental results showed that the pore structure of LPFC was richer and more graphitized than that of phenolic resin carbon (PFC). The adsorption performance of LPFC on CR was better than that of PFC. The adsorption characteristics of LPFC were investigated from the adsorption isotherm and kinetic perspectives. The Langmuir isothermal adsorption model and the proposed second-order kinetic model were able to fit the adsorption data better. The adsorption process preferred monolayer adsorption, and the proposed second-order model predicted a maximum adsorption capacity of 425.53 mg/g. After five cycles, the removal of CR by LPFC only decreased from 92.1 to 79.2%. It can be seen that LPFC adsorbents have great potential in the field of wastewater treatment and can effectively realize the high-value application of lignin.

Highly selective and reusable nanoadsorbent based on expansive clay-incorporated polymeric nanofibers for cationic dye adsorption in single and binary systems

Fabrication of nanoadsorbents with excellent adsorption capacity, selectivity, easy separation, and superior reusability for removing organic dyes from polluted water remains challenging. In this study, novel expansive clay/polyvinyl alcohol nanofibers (clay/PVA NFs) were fabricated as sheet-membranes using an electrospinning technique. The expansive clay with different ratios (5, 10, and 15 wt%) was incorporated into PVA NFs and comprehensively studied in terms of morphological and physicochemical characteristics. SEM images showed that incorporating the clay by electrospinning resulted in nanofibers with smaller diameters than the neat PVA NFs. The clay/PVA composite possesses high stability in aqueous media and a negatively charged surface at a pH higher than 4.1. The results showed that incorporating clay into PVA NFs improved the adsorption capacity for removal of crystal violet dye (CV) from single and binary systems. The incorporation of 5 % clay into the PVA NFs reduced diameter from 341 to 217 nm and increased its maximum adsorption capacity for the CV dye removal from 48.65 to 121.73 mg/g. The Redlich-Peterson and pseudo-first order models provided the best modeling of the experimental adsorption isotherm and adsorption kinetic data, respectively. The clay/PVA NFs exhibited outstanding reusability, with a removal efficiency for CV dye of 99.34 % after ten cycles of reuse with easily separated after adsorption. In addition, the clay/PVA NFs have good selectivity for separating CV dye from various binary dye systems. The selectivity of the clay/PVA to separate the CV dye from the binary dye systems of CV/methylene blue, CV/Coomassie brilliant blue, and CV /hematoxylin was 88.57 %, 90.92 %, and 97.24 %, respectively. Finally, excellent adsorption performance, good selectivity, high reusability, and ease of separation make clay/PVA NFs a promising adsorbent for CV dye removal from complex wastewater.

PH-sensitive cellulose/chitin nanofibrillar hydrogel for dye pollutant removal

In this study, a pH-sensitive smart hydrogel was successfully prepared by combining a polyelectrolyte complex using biopolymeric nanofibrils. By adding a green citric acid cross-linking agent to the formed chitin and cellulose-derived nanofibrillar polyelectrolytic complex, a hydrogel with excellent structural stability could be prepared even in a water environment, and all processes were conducted in an aqueous system. The prepared biopolymeric nanofibrillar hydrogel not only enables rapid conversion of swelling degree and surface charge according to pH but can also effectively remove ionic contaminants. The ionic dye removal capacity was 372.0 mg/g for anionic AO and 140.5 mg/g for cationic MB. The surface charge conversion ability according to pH could be easily applied to the desorption of the removed contaminants, and as a result, it showed an excellent contaminant removal efficiency of 95.1 % or more even in the repeated reuse process 5 times. Overall, the eco-friendly biopolymeric nanofibrillar pH-sensitive hydrogel shows potential for complex wastewater treatment and long-term use.

Parameters optimization of Fe3O4 NPs synthesis by Tamarindus indica leaf extract possessing both peroxidase as well as excellent dye removal activity

This study reports optimized conditions for the green synthesis of iron (II,III) oxide nanoparticles (Fe3O4 NPs) from Tamarindus indica (T. indica) leaf extract. The synthetic parameters like concentration of leaf extract, solvent system, buffer, electrolyte, pH, and time were optimized for Fe3O4 NPs synthesis. Fe3O4 NPs were obtained from the synthesis protocol by measuring size (80 ± 3 nm approx.), characteristics color changes, and an absorption peak between 270 nm and 280 nm using a UV–visible spectrophotometer, scanning electron microscope (SEM), and an energy dispersive X-ray spectrometer (EDS) study. Peroxidase activity was tested with 3,3,5,5–Tetramethylbenzidine (TMB) oxidation in the presence of hydrogen peroxide and dye removal activity was tested with malachite green (MG). The results indicated that the successful synthesis of Fe3O4 nanoparticles using aqueous leaf extract of T. indica is a practical alternative for biomedical applications due to its potent peroxidase activity and high dye removal capacity (about 93% with UV light and 55% with room light).

Alizarin-loaded hydroxyapatite containing SnO2 nanoparticles for efficient dye removal and biofilm inhibitory properties

The removal of hazardous dyes from wastewater is an important aspect of environmental remediation, and microbial biofilm formation is a serious medical problem that can jeopardize treatments targeting drug-resistant microbes. We fabricated alizarin-loaded hydroxyapatite nanorods containing SnO2 (Ali-HAp-SnO2) nanocomposite (NCs) using a simple wet impregnation technique to improve the stability and prolong the release profile of antibiofilm agent alizarin. The structure and morphology of prepared nanoparticles were characterized using various analytical techniques, and their dye adsorbent and antibiofilm properties against Staphylococcus aureus were studied. Ali-HAp-SnO2 NCs effectively removed Congo red (CR, 97.54%) from aqueous media and inhibited S. aureus biofilm formation (86.4%). The Elovich kinetic model and Langmuir adsorption isotherm provided best fits for the adsorption kinetics of Ali-HAp and Ali-HAp-SnO2, respectively. The alizarin loaded HAp-SnO2 nanocomposite displayed sustained and prolonged alizarin release, which was effective in inhibiting S. aureus biofilm formation. Therefore, the Ali-HAp-SnO2 nanocomposite exhibited consistent antibiofilm activity as well as dye removal capacity.