Paint Industry Research Articles

Virtual Screening of a Library of Naturally Occurring Anthraquinones for Potential Anti-Fouling Agents.

Marine biofouling is the undesired accumulation of organic molecules, microorganisms, macroalgae, marine invertebrates, and their by-products on submerged surfaces. It is a serious challenge for marine vessels and the oil, gas, and renewable energy industries, as biofouling can cause economic losses for these industries. Natural products have been an abundant source of therapeutics since the start of civilisation. Their use as novel anti-fouling agents is a promising approach for replacing currently used, harmful anti-fouling agents. Anthraquinones (AQs) have been used for centuries in the food, pharmaceutical, cosmetics, and paint industries. Citreorosein and emodin are typical additives used in the anti-fouling paint industry to help improve the global problem of biofouling. This study is based on our previous study, in which we presented the promising activity of structurally related anthraquinone compounds against biofilm-forming marine bacteria. To help uncover the anti-fouling potential of other AQ-related structures, 2194 compounds from the COCONUT natural products database were analysed. Molecular docking analysis was performed to assess the binding strength of these compounds to the LuxP protein in Vibrio carchariae. The LuxP protein is a vital binding protein responsible for the movements of autoinducers within the quorum sensing system; hence, interrupting the process at an early stage could be an effective strategy. Seventy-six AQ structures were found to be highly docked, and eight of these structures were used in structure-based pharmacophore modelling, resulting in six unique pharmacophore features.

Comparison of Particle Shape, Surface Area, and Color Properties of the Calcite Particles Ground by Stirred and Ball Mill

Since the particle size, shape, specific surface area, and purity of the ground calcium carbonate (GCC) decide its usability in the paper, paint, and plastic industries, the effect of grinding is important. However, the effect of stirred and ball mill grinding on the particle shape of GCC by dynamic image analysis (DIA) is still lacking in the literature. Therefore, the aim of this study is to compare the aspect ratio at the same fineness (d97 = 50 μm) and evaluate other properties such as color, and surface area of GCC particles by stirred and ball mill grindings. DIA results showed that particles produced by the ball mill had higher aspect ratio values than those by the stirred mill. This was attributed to the impact, and attrition breakage modes produced by the ball and stirred mill, respectively. This conclusion is supported by XRD and SEM. Finally, the results related to physical properties such as aspect ratio, surface area, and whiteness are discussed depending on the usage area of GCC.

Highly porous biobased graphene-like carbon adsorbent for dye removal: Preparation, adsorption mechanisms and optimization

Dyes containing wastewater are generally produced in enormous quantities by the textile, dyeing, paper and pulp, tannery, and paint industries. Adsorption is used widely for dye removal because it is easily applied, non-toxic, inexpensive, and highly efficient. Graphene and graphene-based materials are attractive adsorbents, owing to their high specific surface areas and strong π–π interactions. However, graphene production process is demanding, costly, and requires several toxic chemicals. Thus, uncomplicated, and economical graphene-like carbon preparation by biomass pyrolysis has attracted attention. In this study cellulose-derived graphene-like carbon (CGLC) was obtained by pyrolyzing cellulose with FeCl3/ZnCl2. FeCl3 facilitates the synthesis of CGLC via the template effect, while ZnCl2 can produce a porous structure. The CGLC produced was characterized using the Brunauer–Emmett–Teller method, scanning electron microscopy, X-ray diffraction, Raman, Fourier transform infrared, and X-ray photoelectron spectroscopic analyses. We confirmed that the CGLC had a low ID/IG of 0.64 and a crystalline structure when cellulose was pyrolyzed with FeCl3. In addition, ZnCl2 produced a porous CGLC with high specific surface areas (2069.22 m2 g−1). The CGLC was then used for adsorptive cationic and anionic dye (Rhodamine B and Congo Red) removal to investigate its applicability as an adsorbent. The maximum CGLC adsorption capacities for Rhodamine B and Congo Red were 572.8 and 220.7 mg g−1, respectively, which indicate that CGLC can remove both cationic and anionic dyes. The adsorption mechanism may involve physical adsorption, such as π–π interactions and van der Waals bonds.

Lubricated surface oblique stagnation point flow of second-grade fluid with heat and mass transfer phenomenon: applications to hydraulic systems

The lubrication phenomenon with heat and mass transfer phenomenon justified applications in ploy engineering, polymer processes, compressor oils, piston oils, hydraulic systems, and paint industries. This contribution attributes the significance of heat and mass transfer due to the lubricated surface. The enhancement in the lubricated phenomenon is further suggested by incorporating the nonlinear radiative impact and chemical reaction. The viscoelastic fluid flow is confined in the zone of stagnation point of the lubricated surface. The axial and tangential velocities are presented for no-slip and full-slip cases. Moreover, a comparative analysis is carried out for temperature distribution over lubricated and non-lubricated surfaces for linear and nonlinear radiations. The problem is modeled in view of fundamental conservation laws, and the similarity variables are used to transfer them to the system of coupled nonlinear boundary value problem which is approximated by the Keller box method. The obtained results are validated with the existing literature as a particular case of the present study. It is noted that the local Nusselt number and Sherwood number are reduced by decreasing the efficiency of the lubricant also the nonlinear thermal radiation assists the heat transfer rate. The increase in chemical reaction declined the concentration phenomenon.

Facile synthesis of gC3N4/MoS2 composite for rapid sequestration of lead and methylene blue and its potential application in paint industry wastewater remediation

In this study, a composite of graphitic carbon nitride coated Molybdenum Disulphide (gC3N4/MoS2) has been synthesized by thermal polymerization in a very cost-effective facile approach. The study explores the properties of synthesized gC3N4/MoS2 via various characterization techniques. It looks into its applications in the capture of Lead (Pb2+) and Methylene Blue (MB) in single and binary associations in a batch process and finally targets paint industry wastewater treatment. The uniqueness of the work lies in the ease of adsorbent synthesis and rapid sequestration of Pb from aqueous solutions of only Pb, Pb -dye, and Pb from the actual paint industry wastewater. Maximum Pb uptake capacity (qmax) attained was 60.06 mg/g at pH = 4, and Pb2+ concentration = 5–50 mg/L. The adsorption of Pb2+ followed Pseudo second order kinetics (R2 = 0.90–0.97) and Freundlich isotherm model (R2 = 0.90–0.98), where all models were plotted nonlinearly. Similarly, for MB qmax was 32.69 mg/g at pH = 6, and MB concentration = 10–60 mg/L. The adsorption of MB followed PSO and Elovich model with R2 0.96–0.98 and 0.99, respectively, and Freundlich model with R2 = 0.90–0.97. Pb2+ is readily adsorbed on gC3N4/MoS2 in the presence of MB, irrespective of contact time, adsorbent dose, and MB concentration. gC3N4/MoS2 rapidly captures Pb from the actual paint industry wastewater even with multiple competitive cations and anions, both organic and inorganic, with 99 % efficiency. Overall, the adsorbent gC3N4/MoS2 holds promise for treating Pb and dyes containing wastewater in terms of economy in synthesis and adsorption capacity.

GREEN SYNTHESIS OF COPPER NANOPARTICLES FROM AN EXTRACT OF CINNAMON BARK: SPECTROSCOPIC CHARACTERIZATION, OPTICAL PROPERTIES, ANTIMICROBIAL, AND ANTIOXIDANT ACTIVITIES

Nanobiotechnology is increasing at a very fast rate due to its various industrial applications in the textile, biomedical, food, pharmaceutical, and paint industries. The green synthesis of copper nanoparticles using an aqueous extract of cinnamon zeylanicum has been documented in our present research work. The green synthesis of Cu NPs is a very simple, fast, efficient, eco-friendly, and cost-effective method. In this work, we use an aqueous environment for the green synthesis of copper nanoparticle(Cu NPs). The aqueous environment plays a very important role in decreasing reaction time, reducing the minimum possibilities of side reactions, and proper conversion of precursors into good quality CuNPs in very less time. The existence of flavonoids, tannins, glycosides, and alkaloids was confirmed by the phytochemical analysis of the plant extract, and the presence of these chemicals can be used as reducing, stabilizing, and capping agents. The Cu NPs were characterized by structural, vibrational, and electronic spectroscopic techniques. Powdered X-ray diffraction studies confirm the formation of well-defined equispaced crystalline CUNPs. The average particle and crystalline size of CuNPs were found to be 66.16 ±1 nm and 77.54±1 nm respectively. The Surface plasmon resonance peaks were found at 233.67 and 252.2 nm, measured using UV-Visible spectroscopy, and the calculated band gap was found to be 3.5 e V at 288nm, indicating the semiconductor behavior of the CZ-CUNPs. The effective results of pharmacological activities of CuNPs due to the presence of flavonoids, tannins, glycosides, and alkaloids in the CZ bark extract. The green synthesis of CZ-CUNPs from an aqueous extract of cinnamon zeylanicum bark in the proper stoichiometric ratio is an excellent method for synthesizing highly effective bioactive agents which can be considered good drug candidates for various biomedical applications in the future for mankind.

Alkyd resins produced from bio-based resources for more sustainable and environmentally friendly coating applications.

Recently, due to the depletion of natural resources and raising environmental and economic concerns regarding petroleum derivatives, the creation of novel ecologically friendly and sustainable materials made from bio-based and renewable resources is gaining popularity. Alkyd resins are synthetic resins in which both renewable (fatty acids, glycerol, oil, etc.) and nonrenewable (maleic anhydride, pentaerythritol, phthalic anhydride, etc.) raw materials are used in their production. Due to their superior performance (good aging, greater weather resistance and high heat resistance, outstanding gloss, etc.) over other resins, easy application, low cost, and varied use, in the coating and paint industries, they are commonly used. This review covers the studies on bio-based monomers used instead of nonrenewable ones in the production of alkyds. The effects of substituted bio-based monomers on the final properties (adhesiveness, drying times, hardness, tackiness, etc.) of produced alkyds and coatings are also discussed in detail.

Synthesis and characterization of nano-hematite

In this work, synthesis of α-Fe2O3 via co-precipitation method is reported. Further, their detailed characterizations of structural properties, surface morphology, thermal and optical properties using X-ray diffraction (XRD), Raman Spectroscopy, Brunauer–Emmett–Teller (BET), Fourier transform infrared spectroscopy (FT-IR), High resolution transmission emission microscopy (HR-TEM), and UV–Visible spectroscopy techniques were performed. All the studies reveal the successful synthesis of α-Fe2O3 nanoparticles with a polygon-shaped morphology and with an average particle size around 10–25 nm. It also confirmed the development of hexagonal crystal structure with a space group R-3c. The obtained nano powders imparted intense red pigmentation, hence proving its applications in the pigment industry. UV–Visible Spectroscopy showed a standard band-gap of 1.8 eV, which is unexpectedly much smaller in comparison to the prevailing reports. Thus, the synthesis of α-Fe2O3 nanoparticles with co-precipitation method is promising for band-gap narrowing of the iron oxide systems.

Use of Jamun seed (Syzyum Cumini) biochar for removal of Fuchsin dye from aqueous solution

The textile, leather, paint and other industries discharge lots of dyes in their effluent which can cause major impact to environment and human life. Therefore, it becomes necessary to eliminate the dye from the effluent before its discharge and reuse. Several procedures for the removal and inactivation of dyes have been proposed over past, but the adsorption has gained popularity due to its efficiency and operational ease. Use of the biochars as an adsorbent is gaining attention due to their low cost, availability and high adsorption capability. The current study focuses on the removal of basic Fuchsin (BF) dye by adsorption using Jamun (Syzyum cumini) seed powder biochar as an adsorbent. The biochar was characterized through various analyses such as: XRD, EDS, FTIR, TGA and SEM. Adsorption was studied by varying the parameters such as pH, contact duration, temperature, adsorbent dose, and temperature. Further, the isotherm, kinetic and thermodynamic studies were also performed to understand the adsorption mechanism. The maximum adsorption capacity for BF dye was found with Jamun seed biochar produced at 500?C. The study reveals that the biochar manufactured from Jamun seed power has a significant potential for the elimination of BF dye from wastewater.

Rickshaw Paintings of Bangladesh: Representation of Reality, Evolution of Art and Preservation

Rickshaw painting is one of the popular art forms of Bangladesh. It is also a symbol of Bangladeshi culture. But with the passage of time the subject of rickshaw pictures has changed. For various reasons, various topics and events have taken place in the rickshaw painting. This research has tried to investigate the past and present of the rickshaw painting, content of the rickshaw painting and its variations and some factors that have affected the rickshaw painting most over the time. In order to know all these issues, 14 rickshaw painters living in different regions of the country were interviewed to collect primary data and the rickshaw paintings stored in the Bangladesh National Museum were reviewed and thematically analyzed. Also the help of various books, journals, magazines, newspapers and other published information has been taken to achieve research objectives. This research reveals that apart from the topics discussed at different times, rickshaw paintings are being made considering the political and social context more. The research results also show that various types of contemporary events, morals, sermons, scenes and some popular topics have appeared again and again in rickshaw paintings. Various problems of rickshaw filming have been identified in this study. One of the problems is the industrialization and commercialization of rickshaw paintings. As a result the whole rickshaw painting industry is under serious threat. The study unveils that many rickshaws are now using digital banners instead of traditional rickshaw painting. Rickshaw painting is soon going to be included in the world immeasurable cultural heritage list from our own heritage. Therefore more research is needed to protect and preserve this industry. The research makes a contribution in understanding the content, evolution and problems of folk art of Bangladesh.

Investigation of the treatability of paint industry wastewater using hybrid coagulant poly-aluminum-chloride-sulfate

Investigation of the treatability of paint industry wastewater using hybrid coagulant poly-aluminum-chloride-sulfate

Sources of finance: A study of akzonobel India limited and kansai nerolac paints limited

A company requires finances to carry out its target activities and meet its demands. That is why finance is also called as the “vital blood” of the company. Business finance facilitates the company to carry out the multiple operations that lead to the mission, objectives and target of the company. It can raise finance from a variety of sources that must be analysed properly to choose the best and the most appropriate accessible method. The sources of finance could be chosen depending on the cost, situation, purpose and the risk associated with it. The present paper studies and analyses the sources of finance- long term and short term, taken by the two leading companies of the paint industry- AkzoNobel India Limited and Kansai Nerolac Paints Limited. It also studies the influence of different elements on the year-on-year changes in the financial position and draws an inference on the use of different kinds of funds of both companies.

Investigation of the synergistic effect of the Fenton process on the paint industry wastewater treatment and optimization of independent process parameters

Investigation of the synergistic effect of the Fenton process on the paint industry wastewater treatment and optimization of independent process parameters

Rickshaw Paintings of Bangladesh: Representation of Reality, Evolution of Art and Preservation

Rickshaw painting is one of the popular art forms of Bangladesh. It is also a symbol of Bangladeshi culture. But with the passage of time the subject of rickshaw pictures has changed. For various reasons, various topics and events have taken place in the rickshaw painting. This research has tried to investigate the past and present of the rickshaw painting, content of the rickshaw painting and its variations and some factors that have affected the rickshaw painting most over the time. In order to know all these issues, 14 rickshaw painters living in different regions of the country were interviewed to collect primary data and the rickshaw paintings stored in the Bangladesh National Museum were reviewed and thematically analyzed. Also the help of various books, journals, magazines, newspapers and other published information has been taken to achieve research objectives. This research reveals that apart from the topics discussed at different times, rickshaw paintings are being made considering the political and social context more. The research results also show that various types of contemporary events, morals, sermons, scenes and some popular topics have appeared again and again in rickshaw paintings. Various problems of rickshaw filming have been identified in this study. One of the problems is the industrialization and commercialization of rickshaw paintings. As a result the whole rickshaw painting industry is under serious threat. The study unveils that many rickshaws are now using digital banners instead of traditional rickshaw painting. Rickshaw painting is soon going to be included in the world immeasurable cultural heritage list from our own heritage. Therefore more research is needed to protect and preserve this industry. The research makes a contribution in understanding the content, evolution and problems of folk art of Bangladesh.

Kırşehir Bölgesi Mermerlerinin Mikronize Kalsit Olarak Kullanılabilirliğinin Araştırılması

Bu çalışma kapsamında Kırşehir bölgesinde potansiyel mikronize kalsit sahalarının belirlenmesi ve bu sahaların gelecekte kağıt, boya, seramik, plastik, tarım ve hayvancılık gibi farklı endüstri kollarına kazandırılması amaçlanmıştır. Çalışma kapsamında 7 farklı bölgeden alınan örnekler üzerinde mineralojik petrografik, jeokimyasal ve renk analizleri gerçekleştirilmiştir. Jeokimyasal analizlerde temin edilen örneklerin CaCO3,SiO2 ve Fe2O3 gibi değerleri, renk analizleri ile de beyazlık dereceleri belirlenmiştir. Elde edilen sonuçlara göre MK-1, MK-2, MK-3, MK-4, MK-5, MK-6 bölgelerinin boya, kağıt ve plastik sektörü için gerekli değerleri sağladığı görülmüştür. Ancak seramik sektörü için özellikle CaCO3 değerleri ile Fe2O3 ve MgO gibi safsızlıkları dikkate alındığında, gerekli standartlarda olmadıkları belirlenmiştir. Bölgeler beyazlık değerleri açısından değerlendirildiğinde MK-7 bölgesinin sadece tarım ve hayvancılık sektörüne uygunluğu görülmüş olup diğer bölgelerin ise boya, kağıt, plastik ve seramik sektörlerinin kriterini sağladığı belirlenmiştir.

Development of an Advanced Inspection of the Degradation of Volatile Organic Compounds in Electrochemical Water Treatment of Paint-Industrial Water Effluents

This study presents a compact system developed to treat paint-industrial water contaminated by the residues of volatile organic compounds (VOCs) using hybrid electrothermochemical wastewater treatment technology. Different treatment parameters (sample dilution, working current) were studied, and the power of the removal was expressed by the removal efficiency factor. It was shown that for all of the VOCs, significant removal was obtained with dilution 1:3 (industrial water: deionized water, V:V) and electric current set at 30 A. For advanced inspection of the treatment process, a simple and solventless method has been developed and validated, using headspace sampling combined with gas chromatography-mass spectrometry. Parameters affecting the headspace sampling efficiency were thoroughly studied, including the temperature, time, and mixing rate. The proposed method was partially validated utilizing the selected sampling parameters. The limits of detection ranged between 0.19 µg/L and 4.02 μg/L. The validated analytical method was an efficient tool for the inspection of residual VOCs in paint-industrial water and treated water samples. The new electrochemical water treatment was shown to be helpful in the paint industry’s effluent reuse.

SIMULATION OF THE DRYING PROCESS OF WALNUTS IN A CONVECTION DRYER

Walnuts are valued in the world for the nutritional and medicinal properties of the fruits and the versatile character of their use. In particular, they are widely used in confectionery, oil and fat, flour milling, pharmaceutical, chemical, fodder, paint and other industries. To ensure the safety of the walnut crop, it is necessary to condition them. Moisture requirements for whole walnuts are not higher than 10%. Moisture content of whole nuts after harvesting can reach 35-45%. Therefore, it is necessary to carry out drying to bring them to condition. Drying of whole nuts in Ukraine is usually carried out under natural conditions in covered, ventilated rooms. This is due to the fact that it is physically difficult to significantly speed up the process of drying whole nuts with the help of special equipment. In addition, it is economically inefficient, as it requires significant expenditure on energy carriers. However, if the volume of walnuts is significant, it is difficult to do without special drying equipment. Therefore, some enterprises apply forced drying of whole nuts with the help of various drying chambers in order to prevent their spoilage. The purpose of the research is to justify the structural and technological scheme of a convective dryer for walnuts and carry out a simulation of the technological process of drying. Based on the results of the research, the structural and technological scheme of the convective dryer for walnuts, which is made in the form of a mixer with a vertical screw working body with a lower flow of warm air, has been developed and substantiated. Using the Star CCM+ software package, the technological process of drying was simulated in the developed convective dryer. A visualization of the process of redistribution (mixing) of walnut fruits in the drying chamber under the action of the screw working body and the distribution of air flow speed and temperature in the drying chamber of the convective dryer was obtained. According to the coefficient of variation, it was established that the quality of mixing is the best (δ = 0.92±0.02) and remains at this level after 392 s from the moment of the start of rotation of the screw working body. It was established that there is a temperature gradient in the working area of the dryer: the temperature in the lower part is 58±2 °С, in the upper part - 43±2 °С. Given the rather fast mixing (392 s), such a temperature difference is not critical. For a more detailed substantiation of the structural and technological parameters of the developed convective walnut dryer, it is necessary to carry out a full-fledged numerical simulation. It is proposed to choose the following research factors: the angle of the cone-shaped grid, the volume of the drying chamber, the diameter, the step and speed of rotation of the screw working body, the speed and temperature of the incoming air flow. The evaluation criteria should be the coefficient of variation of the redistribution of walnut layers, their average temperature, and the lowest air flow rate in the loaded volume of walnuts.

Paint Marketing and Factors Affecting the Consumers’ Paint Purchase Preference from the Viewpoint of Paint Industry Members in Turkey

The aim of this research was to examine the consumers' preference of paint purchase from the viewpoint of individuals employed in the Turkish paint industry. It was aimed to reach at least 278 individuals with a sampling error of 5%. Within this scope, 350 questionnaire forms were distributed and 330 were received back in the year of 2017. Since 4 of the returned questionnaires had a missing question, study was conducted with 326 questionnaires. The questionnaire form was used as the data collection tool. It included 5 questions about demographic characteristics, 17 questions concerning purchasing and using behaviors, and 29 questions regarding consumers' preferences of paints. Data analysis of the study was done using the SPSS 16 package program. Through the analysis of data, descriptive statistics such as frequency, percentage, mean and standard error were presented. In addition, t test and ANOVA test were applied to test the relationship among variables. Based on research findings, the most important factors for the preference of paint purchase in Turkey were determined as the aging of existing wall painting, marriage and cleaning issues. Moreover, it was found out that the experiences of consumers were also effective for the paint purchase decision and preference. Within the scope of the study, it was determined that elder individuals, married and high income people were influenced by many factors in their preference for painting. On the other hand; young, single and low-income individuals were considering less factors in their paint preferences. In addition, it was detected that men were considering properties (features) such as the price and quality more than women in their purchasing preferences. Furthermore, the most important factor affecting the purchasing choice of consumers was determined as previous knowledge and experience. It was also found out that consumers did not frequently conduct market research before choosing the paint. Educational status of individuals was not an effective factor concerning paint preferences.

A study of aquatic macrophyte for remediation of chromium and cadmium in wastewater effluents in Yenagoa Metropolis, Niger Delta

Although aquatic macrophytes have been used individually for wastewater remediation, there is a dearth of studies comparing their efficiency level to determine the most effective for remediation of specific heavy metals. This study aimed to determine the most effective aquatic macrophyte amongst Eichhornia crassipes, Pistia stratiotes, Nymphaea nouchalli, Lemna minor and Ceratophyllum demersum for the remediation of Cr and Cd from wastewater effluents in Yenagoa Metropolis, Niger Delta. Wastewater samples from emulsion paint industries were collected from six locations (L1-L6) and analyzed for Cr and Cd concentration using Inductively Coupled Plasma Atomic Emission Spectroscopy. The wastewater samples were treated with these aquatic macrophytes and the concentration of Cr and Cd in the samples were assessed every two weeks for six weeks. Results showed that the mean Cr concentration (0.27mg/L) and Cd levels (0.080mg/L) in the wastewater samples were higher than the recommended WHO limits of 0.05 and 0.003mg/L respectively. The treated wastewater showed that Cr and Cd concentrations in the wastewater were reduced to minimum values by P. statiotes (0.003±0.001mg/L) and E. crassipes (0.000±0.000mg/L) respectively. The removal potentials of the macrophytes were in the order of P. stratiotes > E. crassipes > N. nouchalli > L. minor > C. demersum for Cr, and E. crassipes > P. stratiotes > N. nouchalli > C. demersum > L. minor for Cd. It was concluded that the most effective aquatic macrophyte for remediation of Cr was P. stratiotes (with 97% efficiency) and Cd was E. crassipes (87.5% efficiency). Therefore the macrophytes were considered good phytoremediators.

Effective removal of 2,4-dichlorophenoxyacetic acid from aqueous solutions using polyaniline recovered from non-recyclable pigment effluent via electro polymerization

Electro conducting polymer - polyaniline is used as a pigment in the epoxy based coating system. These pigment developing industries releases unreactive monomers and dimers of aniline compound (byproducts of chemical polymerization) in the effluent which creates environmental issues. The present study focuses on the recovery of polyaniline from the pigment effluent by electrochemical polymerization method. The aniline monomers were polymerized on the graphite plate as emeraldine base form at an anode potential of 0.6 to 0.68 V with simultaneous decrease in its monomer concentration. The recovered polyaniline (PANI) exhibited smooth rod shape morphology and displayed (011), (020) and (200) crystal planes for the emeraldine base form in X-ray diffraction studies. The recovered PANI was subjected to carbonization and activation (PANI-AC) for its application in adsorptive removal of 2,4-dichlorophenoxyacetic acid (2,4-D) removal. The PANI-AC outperformed commercial activated carbon in removing 50 ppm of 2,4-D from water matrix. The 25 ppm of PANI-AC adsorbent was able to remove 100 %, 85 %, 57 % and 29 % of 100 μg L−1, 250 μg L−1, 500 μg L−1 and 1000 μg L−1 of 2,4-D respectively. The 2,4-D adsorptive removal followed a pseudo second order kinetic model and obeyed Langmuir and Freundlich isotherms. The maximum adsorption capacity of the PANI-AC is of 34.48 mg g−1 (Langmuir isotherm). These findings direct the possible recovery of polyaniline form pigment effluent of paint industries and its application as adsorbent in efficient removal of 2,4-D from aqueous matrix.