Capture Of Pollutants Research Articles

Optical, structural, morphological and chemical properties of doped TiO2 nanoparticles with FeCl3

To achieve high photocatalytic activity, TiO2 nanoparticles nanoparticles require an excitation source in ultraviolet radiation. Incorporating chemical elements into the TiO2 lattice can tune its band gap, resulting in an edge-shifted red absorption to reduce energies, improving photocatalytic performance in the visible region of the electromagnetic spectrum. In this research, TiO2 semiconductor nanoparticles were subjected to a doping process using iron chloride (FeCl3) powder to activate photocatalysis under visible light and consequently improve pollutant capture. To study the effectiveness of the doping process, the main ratios (1:1), (1:1.622) and (1:3) of TiO2:FeCl3 were evaluated using Diffuse Reflectance Spectroscopy (DRS), X-ray diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). The main results of this research show that doping TiO2 with FeCl3 shifted the absorption edge to longer wavelength values, changing the optical properties of the material and decreasing the band gap (Eg) of TiO2 compared to the undoped TiO2 (reference). There are no relevant differences between the XRD pattern of the samples with TiO2-FeCl3 and TiO2 nanoparticles (reference). The fraction of the anatase phase in doped TiO2 nanoparticles has the same magnitude as the reference TiO2. Regarding FTIR, the Fe-doping process alters the TiO2 reference spectrum, increasing the intensity of hydroxyl bonds and peaks particularly, indicating the Ti-O-Fe bond vibration.

Increasing the rate of capture of pollutants by local suction due to the use of an external swirling jet. Part 1. Research methods

To capture pollutants in many buildings and structures, it is necessary to use local suction systems. One of the criteria for the effectiveness of local suction ― the rate of capture of pollutants ― it is proposed to increase due to the impact of a swirling annular jet and the occurrence of a reverse air flow. The circular suction is placed coaxially in an external cylindrical casing, in which the air flow is twisted due to the tangential supply of two supply jets into the casing. A vortex dome is formed, which helps to increase the efficiency of such a vortex suction. The change in the axial velocity of air at a distance from the vortex suction was experimentally and numerically investigated for 11 structures, in each of which 4 different ratios of intake and supply air flow rates were set. In the investigated applications of the proposed suction systems, the speed increases significantly at a certain range of distance from them. A combination of designmode parameters that contribute to the highest rate of capture by vortex suction is determined. The results obtained are useful in designing effective suction systems for capturing pollutants.

Integrated As2O3/SeO2 capture mechanism by Mn–Fe binary oxide in coal-fired flue gas

The integrated capture of multiple pollutants is a prospective approach to achieve the economical pollution reduction. In this work, the integrated capture of As2O3 and SeO2 in coal-fired flue gas by Mn–Fe binary oxide was investigated combined the experiments and density functional theory (DFT) calculations. Results showed that Mn–Fe binary oxide has a significant performance for As2O3 and SeO2 removal. When the Mn/Fe ratio was 1:1, Mn–Fe binary oxide presented the optimum capture ability for As2O3 (SeO2) at 600 °C (750 °C). For the integrated adsorption progress, As2O3 exhibited a better adsorption selectivity than SeO2, which made it easier to adsorb onto sorbent surface, prior to SeO2, and it was negative to SeO2 capture. On the other hand, the presence of SeO2 facilitated the As2O3 capture, for that the pre-adsorption product of SeO2 was favorable to As2O3 retention. Aiming to the phenomenon, DFT calculations were conducted to reveal the integrated adsorption mechanism. Mn and Fe sites were active sites on Fe/Mn3O4 surface for As2O3 and SeO2 adsorption. The presence of SeO2 increased the As2O3 adsorption energy on Fe/Mn3O4 surface, while the adsorption energy of SeO2 decreased with As2O3 introduction. In addition, the adsorption energy of As2O3 on Fe/Mn3O4 surface with pre-adsorbed selenium was higher than that on the clean surface, and it might be reason for the positive effect of pre-adsorbed selenium on As2O3 capture. The results from this work would help to provide an insight on the integrated removal of trace element (TEs) from coal-fired power plant.

Impact of heat generation and use of experimental instruments in a fume hood on pollutant capture efficiency

AbstractA fume hood is a local ventilation system that is typically installed in a laboratory space to ensure the safety of workers from chemical exposure. A fume hood is designed to capture hazardous gas‐phase pollutants generated inside a box‐like enclosure, and the pollutant capture efficiency is regulated by the average opening surface air velocity. However, few cases exist in which the pollutant capture efficiency inside the fume hood is precisely analyzed and quantitatively visualized. In this study, the capture performance of a fume hood under actual use conditions was evaluated using computational fluid dynamics (CFD). The factors that could affect the performance, that is, the exhaust airflow rate, experimental instruments inside, worker in front, and heat source within the fume hood, were parametrically considered. The numerical analyses revealed that experimental instruments near the opening surface significantly affected the airflow into the fume hood and decreased its capture performance. Under the inadequate condition of a low exhaust airflow rate, pollutant leakage inside the chamber was observed due to the presence of a worker in front of the fume hood and the heat source inside. Furthermore, the pollutant capture performance was slightly improved by changing the layout/position of the experimental instrument.

Numerical study on the effect of buoyancy-driven pollution source on vortex ventilation performance

High-temperature buoyancy-driven pollutants that generally exist in industrial buildings and kitchens often be eliminated by local exhaust ventilation systems. The high-temperature pollutant plume driven by buoyancy significantly affects the local exhaust process, resulting in the change in the exhaust flow field and reduction of the pollutant capture efficiency. In this study, the effects of thermal buoyancy-driven pollution sources on the vortex flow field and pollutant removal efficiency of a vortex ventilation system are evaluated through experiments and numerical simulations. The results show that with an increase in the buoyancy flux of the pollution source, the minimum negative pressure and maximum tangential velocity in the vortex flow first increase and then decrease, that is, the buoyancy plume first enhances and then weakens the vortex flow. A critical buoyancy flux exists, and the value of the critical buoyancy flux increases with an increase in the vortex ventilation intensity. Furthermore, the capture of high-temperature pollutants by vortex flow can be categorized as “plume-dominated” and “vortex-dominated”. These two types exhibit significant differences in pollutant transport paths and pollutant capture times during pollutant removal. In addition, on the basis of the pollutant capture efficiency, the vortex airflow performance with respect to capturing high-temperature buoyancy-driven pollutants can be classified as low-efficiency, transition, high-efficiency, and invalid zones. In the process of capturing high-temperature pollutants, vortex ventilation systems should be avoided in the low-efficiency and invalid zones.

Robust system for the regenerative capture of aqueous pollutants with continuously synthesized and functionalized magnetic nanoparticles

Nowadays, the design of efficient technologies for the detection and separation of environmental pollutants from aqueous solutions continues to be a challenge to the industrial sector. The present work proposes a robust microfluidic system for the continuous, rapid and effective testing of selective capture agents of aqueous pollutants based on the use of magnetic nanoparticles, MNPs. These are found of special interest due to their high specific surface area, easy functionalization and superparamagnetic behavior. In this work, MNPs with an average diameter of 8.8 ± 1.3 nm and amino-functionalization were obtained following a novel continuous synthesis that facilitated the control of the particles properties. The microfluidic capture of Cr(VI) from aqueous solutions was assessed as representative case study; followed by the successful regeneration of loaded MNPs. The obtained results prove the advantages of the proposed system: i) continuous synthesis of functionalized MNPs with rigorous size control, ii) selective and fast capture of the target compound depending on the particle’s functionalization and large surface area, respectively, ii) continuous operation that facilitates process scale-up, iii) easy regeneration of the functional materials, and iv) magnetic separation of MNPs from fluid media if needed. Furthermore, the calculated Cr(VI) maximum uptake is higher than obtained values for non-functionalized MNPs and is in the range of previously reported data for ion exchange resins, with the additional advantages already mentioned. Thus, this work constitutes a step forward in the methodological design of advanced systems with detection or separation purposes and can be extended to a wide variety of pollutants.

β-Ketoenamine Covalent Organic Frameworks-Effects of Functionalization on Pollutant Adsorption.

Water pollution due to global economic activity is one of the greatest environmental concerns, and many efforts are currently being made toward developing materials capable of selectively and efficiently removing pollutants and contaminants. A series of β-ketoenamine covalent organic frameworks (COFs) have been synthesized, by reacting 1,3,5-triformylphloroglucinol (TFP) with different C2-functionalized and nonfunctionalized diamines, in order to evaluate the influence of wall functionalization and pore size on the adsorption capacity toward dye and heavy metal pollutants. The obtained COFs were characterized by different techniques. The adsorption of methylene blue (MB), which was used as a model for the adsorption of pharmaceuticals and dyes, was initially evaluated. Adsorption studies showed that –NO2 and –SO3H functional groups were favorable for MB adsorption, with TpBd(SO3H)2-COF [100%], prepared between TFP and 4,4′-diamine- [1,1′-biphenyl]-2,2′-disulfonic acid, achieving the highest adsorption capacity (166 ± 13 mg g−1). The adsorption of anionic pollutants was less effective and decreased, in general, with the increase in –SO3H and –NO2 group content. The effect of ionic interactions on the COF performance was further assessed by carrying out adsorption experiments involving metal ions. Isotherms showed that nonfunctionalized and functionalized COFs were better described by the Langmuir and Freundlich sorption models, respectively, confirming the influence of functionalization on surface heterogeneity. Sorption kinetics experiments were better adjusted according to a second-order rate equation, confirming the existence of surface chemical interactions in the adsorption process. These results confirm the influence of selective COF functionalization on adsorption processes and the role of functional groups on the adsorption selectivity, thus clearly demonstrating the potential of this new class of materials in the efficient and selective capture and removal of pollutants in aqueous solutions.

Synthesis of a superhydrophilic coral-like reduced graphene oxide aerogel and its application to pollutant capture in wastewater treatment

Inspired by nature, a zeolitic-imidazolate framework-8@reduced graphene oxide (ZIF-8@rGO) aerogel was developed to remove tetracycline (TC) from water. The ZIF-8 nanoparticles grown on the rGO aerogel act like the many tentacles of a coral to hunt TC, and the rGO aerogel not only acts as a substrate but also acts like the belly of the coral, which can accommodate a large number of pollutants. Benefiting from these advantages, the ZIF-8@rGO aerogel can decontaminate TC, and showed an excellent adsorption capacity of 1776.26 mg g−1. Based on the experimental tests and characterization analysis, we speculated that the adsorption mechanism between TC and ZIF-8@rGO aerogel was mainly related to the hydrogen-bonding interactions, π-π interaction and electrostatic attraction. This discovery could be transformative for the removal of different types of pollutants by means of adjusting the functional groups of the materials and their composite technology.

New Insights into the Capture of Low-level Gaseous Pollutants in Indoor Environment by Carbonaceous Materials: Effects of Functional Groups, Pore Size, and Presence of Moist

Abating the common indoor pollutants by adsorption is profoundly governed by the properties of adsorbent and the presence of water. We carried out Monte Carlo simulations of adsorption of five common indoor pollutants (benzene, hydrogen sulfide, sulfur dioxide, formaldehyde and ammonia) on functionalized graphitic pores at 298 K with and without the presence of water to investigate the effects of concentration and type of functional groups (FGs) and pore size. The simulation results for the isotherm, the isosteric heat at zero loading, and the spatial distribution of water and pollutant were analyzed to evaluate the effectiveness of remediation of these pollutants. It is found that adsorption of the pollutants at typical indoor concentrations (sub-ppm) occurs in the Henry's law region where the interaction between pollutant and adsorbent dominates the intermolecular interaction of pollutant. Regardless of the pollutants water is always strongly attracted to the FGs in forms of clusters, and the abatement of the pollutant rests on its electrostatic interactions with water molecules in the clusters and van der Waals interactions with the graphitic surface. The relative interplay of these interactions depends on the properties of the pollutant, and this gives rise to two distinct phenomena: competition and cooperation. For ammonia and formaldehyde whose electrostatic interactions with water (in the cluster on the FGs) are strong, their capture is enhanced. On the other hand, the abatement of benzene and hydrogen sulfide is negatively affected because of their weaker interactions with water. Given the inevitable occupation over the FGs by water, more attention should be paid on the interactions between adsorbed water and the pollutants.

Experimental study of the formation and diffusion of soap bubbles for wrapping and transporting indoor airborne pollution

A novel soap-bubble-assisted local exhaust ventilation (SBA–LEV) system is proposed in this study, which uses soap bubbles to separate centralized released airborne pollutants from ambient air and prevents mixing and dilution in the pollutant diffusion process. Four SBA-LEV system modes were proposed, and the formation and free diffusion of the soap bubbles in Mode A were studied by using a single-nozzle air-supply experimental setup. The velocity range of the soap bubble formation was determined, and the relationship between the maximum bubble-forming flow velocity and nozzle diameter was obtained. For a given nozzle diameter, the diameters of the generated soap bubbles were essentially the same and independent of the blowing velocity. Moreover, the soap bubble diameter increased linearly with an increase in nozzle diameter. In the soap bubble diffusion process, it showed that the moving trajectory of a soap bubble is similar to a parabola, and the error between the theoretical and experimental values was less than 20%. Moreover, it indicated that the diffusion range of a soap bubble group expanded with an increase in diffusion height. When the blowing velocity was near the minimum critical airflow velocity, the diffusion range of soap bubbles is the smallest and suitable for capture. Finally, a general design and efficiency evaluation method of the SBA–LEV system was discussed. The SBA-LEV system can effectively reduce the difficulty of pollutant capture by exhaust airflow and the required exhaust air volume, and finally improve the pollutant-removal and energy-saving efficiency of LEV system.

Fenton micro-reactor on a bubble: A novel microbubble-triggered simultaneous capture and catalytic oxidation strategy for recalcitrant organic pollutant removal

A novel catalyst-functionalized microbubble system was developed to trigger both of the Fenton reaction and the flotation separation on the gas-liquid interface of bubbles for efficiently removing the recalcitrant organic pollutants from waters. The Fe(II)-functionalized colloidal microbubbles (FCMBs) were featured as large specific surface area, great bubble density and high ·OH activation capacity. Approximately 98.2% and 93.1% of the triphenylmethane and aromatic azo pollutants were removed within 0.5 min, respectively. Particularly, at the lowest Fe(II) dose of 0.2 mmol/L, the FCMB-triggered Fenton still achieved 7.4–20.6% higher removal than the traditional Fenton method at 0.5 min. In addition to the Fenton oxidative degradation mechanism, the FCMBs themselves were able to capture and remove 20.1–36.8% of pollutants from water. Thus, FCMBs served as micro-reactors in terms of: (i) the target molecules and intermediates were adhered and separated by FCMBs; and (ii) the FCMBs enhanced the mass transfer of catalyst and exposed sufficient active sites on the bubble surface for catalytic oxidation reaction. Compared with the traditional Fenton, the present method showed the robust tolerance of pH (4.0–9.5) and salinity (up to 40‰) at decreased Fe(II) doses, and the bio-toxicity of intermediates was obviously lower. The FCMB-triggered pollutant capture and catalytic oxidation technology exhibited a great potency in engineering implementation given the flexible bubble construction, the integration and simplification of treatment unit, as well as the decreased chemical doses.

Biphen[n]arenes: Modular Synthesis, Customizable Cavity Sizes, and Diverse Skeletons.

Macrocyclic compounds are fundamental tools in supramolecular chemistry and have been widely used in molecular recognition, biomedicine, and materials science. The construction of new macrocycles with distinctive structures and properties would unleash new opportunities for supramolecular chemistry. Traditionally popular macrocycles, e.g., cyclodextrins, calixarenes, cucurbiturils, and pillararenes, possess specific cavities that are usually less than 10 Å in diameter; they are normally suitable for accommodating small- or medium-sized guests but cannot engulf giant molecules or structures. Furthermore, the skeletons of traditional macrocycles are impoverished and incapable of being changed; functional substituents can be introduced only on their portals.Thus, it is very challenging to construct macrocycles with customizable cavity sizes and/or diverse backbones. We have developed a versatile and modular strategy for synthesizing macrocycles, namely, biphen[n]arenes (n = 3-8), based on the structure- or function-oriented replacement of reaction modules, functional modules, and linking modules. First, two reaction modules and one functional module are connected by Suzuki-Miyaura coupling to obtain a monomer having two reaction sites. Then Friedel-Crafts alkylation between the monomer and an aldehyde (linking module) serves to afford diversely functionalized macrocycles. Moreover, large macrocycles can be achieved by using long and rigid oligo(para-phenylene) monomers. Because of the modular synthesis and plentiful molecular supplies, the biphen[n]arenes showed interesting recognition properties for both small molecules and large polypeptides. Customizable functional backbones and binding sites endowed this new family of macrocycles with peculiar self-assembly properties and potential applications in gas chromatography, pollutant capture, and physisorptive separation. Biphen[n]arenes would be a promising family of workhorses in supramolecular chemistry.In this Account, we summarize our recent work on the chemistry of biphen[n]arenes. We introduce their design and modular synthesis, including systematic exploration for reaction modules, customizable cavity sizes, skeleton functionalization, pre- and postmodification, and molecular cages. Thereafter, we discuss their host-guest properties, involving the binding for small guests by cationic/anionic/neutral biphen[n]arenes, as well as the complexation of polypeptides by large quaterphen[n]arenes. In addition, we outline the self-assembly and potential applications of this new family of macrocycles. Finally, we forecast their further development. The chemistry of biphen[n]arenes is still in its infancy. Continued exploration will not only further expand the supramolecular toolbox but also open new avenues for the use of biphen[n]arenes in the fields of biology, pharmaceutical science, and materials science.

Micromachines for Microplastics Treatment.

The increasing accumulation of persistent nondegradable microplastics in the marine environment represents a global environmental problem. Among emerging approaches to tackle microplastics are micro- and nanomotors, tiny devices capable of autonomous propulsion powered by chemical fuels or light. These devices are capable of on-the-fly recognition, capture, and decomposition of pollutants. In the past, various micromotors were designed to efficiently remove and degrade soluble organic pollutants. Current effort is given to the rational design and surface functionalization to achieve micromotors capable of capturing, transporting, and releasing microplastics of different shapes and chemical structures. The catalytic micromotors performing photocatalysis and photo-Fenton chemistry hold great promise for the degradation of most common plastics. In this review, we highlight recent progress in the field of micromotors for microplastics treatment. These tiny self-propelled machines are expected to stimulate a quantum leap in environmental remediation.

Dynamic Membranes for Enhancing Resources Recovery from Municipal Wastewater.

This paper studied the feasibility of using dynamic membranes (DMs) to treat municipal wastewater (MWW). Effluent from the primary settler of a full-scale wastewater treatment plant was treated using a flat 1 µm pore size open monofilament polyamide woven mesh as supporting material. Two supporting material layers were required to self-form a DM in the short-term (17 days of operation). Different strategies (increasing the filtration flux, increasing the concentration of operating solids and coagulant dosing) were used to enhance the required forming time and pollutant capture efficiency. Higher permeate flux and increased solids were shown to be ineffective while coagulant dosing showed improvements in both the required DM forming time and permeate quality. When coagulant was dosed (10 mg L−1) a DM forming time of 7 days and a permeate quality of total suspended solids, chemical oxygen demand, total nitrogen, total phosphorous and turbidity of 24 mg L−1, 58 mg L−1, 38.1 mg L−1, 1.2 mg L−1 and 22 NTU, respectively, was achieved. Preliminary energy and economic balances determined that energy recoveries from 0.032 to 0.121 kWh per m3 of treated water at a cost between €0.002 to €0.003 per m3 of treated water can be obtained from the particulate material recovered in the DM.

Pollutant capture efficiencies in and around the opening surface of a fume hood under realistic conditions

Fume hoods are an indispensable instrument for experimental operations dealing with hazardous chemicals, wherein safety operations are strictly adherent to regulations. Within this context, few cases exist wherein the ventilation efficiency and pollutant capture efficiency inside fume hoods are precisely analyzed and quantitatively visualized. In this study, the pollutant capture efficiencies of a fume hood were analyzed by computational fluid dynamics as functions of exhaust airflow rate and according to the posture of workers in front of the fume hood. The indices for ventilation efficiencies, that is, age of air (SVE3), net escape velocity (NEV), and local purging flow rate (L-PFR), were adopted to quantitatively evaluate the pollutant concentration distributions formed inside the fume hood. NEV analysis revealed that the presence of a worker at the front of the fume hood did not significantly affect the pollutant capture efficiency at the opening surface of the fume hood. Changing the exhaust airflow rate resulted in changes in the size of the circulation flow formed in the upper part of the chamber. The circulation flow was found to have a dominant effect on the distribution of SVE3 and on the formation of the pollutant concentration distribution in the chamber.

Particulate Pollution Capture by Seventeen Woody Species Growing in Parks or along Roads in Two European Cities

This research aims to extend the existing knowledge on air quality improvement by the arboreal–shrub heritage. The PM accumulation (PM10–100, PM2.5–10, and PM0.2–2.5 (µg·cm−2)) was measured with consolidated gravimetric techniques during spring, summer, and fall for 2160 leaf samples belonging to the basal, median, and apical part of the crown of 17 species located in the streets and parks of 2 European cities (Rimini and Krakow). On the same samples, the deposition (PM10 and PM2.5 (µg·cm−2·day−1)) was evaluated according to a model based on the wash-off rain effect. Quercus ilex accumulated more PMx than the other species in Rimini, while in Krakow, the highest accumulators were Pinus nigra for PM10–100, Tilia cordata for PM2.5–10, and Populus nigra for PM0.2–2.5. Only in Krakow was the capture capacity of some species affected by the street or park growing condition. The basal leaves showed greater PM10–100 accumulation than the median and apical ones. In Rimini, the total PM accumulation tended to increase throughout the year, while in Krakow, the opposite occurred. However, as the accumulation increased, the deposition decreased. The PM accumulation was reduced by rainfall and enhanced by the air PM concentration, while the wind speed effect was opposite, depending on the city. These findings are useful for directing decision makers in the design of greener, healthier, and sustainable cities.

On the Capture of Common Gaseous Pollutants in Indoor Environment

On the Capture of Common Gaseous Pollutants in Indoor Environment

A bifunctional imidazolium-functionalized ionic porous organic polymer in water remediation

This work introduces a cationic porous organic polymer for fast and efficient capture of anionic pollutants and photocatalytic degradation of cationic dyes under solar irradiation.

Capture of Pollutants from Exhaust Gases by Low-Temperature Heating Surfaces

One of the most effective methods towards improving the environmental safety of combustion engines is the application of specially prepared water-fuel emulsions (WFE). The application of WFE makes it possible to reduce primary sulfur fuel consumption and reveals the possibility of capturing the pollutants from exhaust gases by applying condensing low-temperature heating surfaces (LTHS). In order to realize such a double effect, it is necessary to investigate the pollution processes on condensing LTHS of exhaust gas boilers (EGB), especially the process of low-temperature condensing a sulfuric acid vapor from exhaust gases to investigate the influence of condensing LTHS on the intensity of pollutants captured from the exhaust gases. The aim of this research is to assess the influence of the intensity of pollutants captured from exhaust gases by condensing LTHS in dependence of water content in WFE combustion. Investigations were carried out at a special experimental setup. The processing of the results of the experimental studies was carried out using the computer universal statistical graphic system Statgraphics. Results have shown that in the presence of a condensing heating surface, the degree of capture (purification) of pollutants from the exhaust gas flow is up to 0.5–0.6.

Facile green synthesis of bio-carbon material from eggshells and its application for the removal of Bisphenol A and 2,4,6-trichlorophenol from water

Tackling water challenges is one of the sustainable development goals (SDG 6) and current researches are focused on the provision of clean and potable water in light of industrial activities, climate change, and global warming. The use of bio-based carbons from environmentally friendly biomass materials has afforded low-cost and efficient adsorbents for the capture of toxic pollutants from water sources. Bisphenol A (BPA), an endocrine disruptor and 2,4,6-trichlorophenol (2,4,6-TCP), a carcinogen are priority pollutants and are the spotlight of researches in water remediation. Here, we report a simple, less hazardous, energy-efficient, scalable, and low-cost method for the synthesis of a magnetic carbon material (Fe-EG) using renewable feedstock. This material overcomes the problem of separation associated with bio-carbons and its efficiency for the capture of BPA and 2,4,6-TCP from aqueous solution was evaluated. Surface properties of the prepared carbon were determined using Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), RAMAN spectroscopy, Energy dispersive X-ray (EDX) and X-ray diffraction diffractometry (XRD). Mechanistic studies based on adsorption models were utilized in proposing the mechanism of interaction between the adsorbent and the pollutants. Of the four isotherm models studied, Freundlich and Langmuir isotherms gave the best fit for the adsorption of BPA and 2,4,6-TCP respectively. Maximum adsorption capacities of 35 mg/g and 11 mg/g were obtained for BPA and 2,4,6-TCP respectively. These results indicate that carbon adsorbents synthesized from renewable biomass can be employed in the removal of BPA and 2,4,6-TCP from water which shows a sustainable approach to the utilization of agricultural waste.