Biosorbent Amount Research Articles

Removal of methylene blue dye from aqueous solution using biomass of Cunninghamella echinulata UCP 1297 as superbiosorbent / Remoção do corante azul de metileno de solução aquosa usando biomassa de Cunninghamella echinulata UCP 1297 como superbiossorvente

Nowadays, water pollution caused by dye contaminants has become a severe global issue and aroused tremendous attention, since it is estimated that more than 100 thousand types of commercial organic dyes have been produced. Meanwhile, huge amounts of dyes have been discharged into natural environment during the production process, which causes serious environmental problems. Hence, it is quite urgent to remove the dyestuffs from water, and several methods have been devoted to resolving this issue, including biosorption processes. In this context, this study aimed the decolorization of methylene blue using biomass of Mucoralean fungi Cunninghamella echinulata UCP 1297, as alternative biosorbent. The fungus C. echinulata was initially cultivated in low-cost medium containing 1% corn steep liquor and 5% mature Pacovan banana (Musa sapientum) peel flour, at pH 6, 28ºC and 150 rpm, during 96 h. Fungal biomass obtained after filtration and centrifugation of cultures was subjected to lyophilization. The biosorbent (lyophilized biomass was sieved to obtain particles of size less than 1.0 mm, which were used for decolorization of methylene blue from aqueous solution at concentration of 5 mg/L. Experiments were carried out for 24 and 48h at 28ºC, using a 23 full-factorial design (FFD) to evaluate the influence of agitation, pH and amount of biosorbent. Discoloration was determined by measuring absorbance at 660 nm in UV-Visible spectrophotometer. According to the results, fungal biomass proved to be an excellent biosorbent of methylene blue, showing the highest percentage of removal (95.407%) and (96.427%) were observed in the condition 8 of the FFD, with the maximum levels of the evaluated variables (200 rpm of agitation, pH 9 and 90 mg of biomass). However, in the condition 4 similar variables, except to biomass (200 rpm of agitation, pH 9 and 10 mg of biomass) showed a lower methylene blue removal as 0.413 and 10.249%, respectively to 24 and 48h of incubation. The results indicated that the amount of Cunninghamella echinulata UCP 1297 biomass influenced the decolorization bioprocess of the methylene blue azo dye, proving to be a superbiosorbent. Thus, this study confirmed the suitability of fungal biomass for dye removal process and the cost-effectiveness of it uses due to inexpensive medium for production using agro-industrial residues.

Green purification of heavy metal pollution from aquatic environment by biorefinery waste biomass of Nigella sativa L.: A novel and effective treatment agent

Nigella sativa L. biorefinery waste biomass with antioxidant and antimicrobial properties was used as a novel biosorbent material for the green treatment of heavy metal pollution from water environment in this work. Manganese, one of the most widely used heavy metals, was used as a model to test the biosorption behavior of novel biosorbent. The main variables of biosorption operation such as pH, biosorbent amount (m), heavy metal concentration (Ci), and time (t) were optimized by the batch-type test system. The typical features of process of heavy metal biosorption were displayed by the characterization, kinetics, equilibrium, and thermodynamics studies. The characterization studies indicated that the biosorbent material possessed a heterogeneous surface morphology including many protuberances and cavities, and a rich profile of functional group. pH of 6, m of 10 mg, Ci of 30 mg L−1, and t of 120 min were determined to be the optimum variables values of biosorption process. The experimental data of heavy metal biosorption followed the kinetics model of Elovich and the isotherm model of Freundlich. The biosorption of heavy metal from aquatic medium was a spontaneous, favorable, and physical operation (ΔG∘: -7.27–3.55 kJ mol−1 and EDR: 0.90 kJ mol−1). The biosorbent material exhibited higher heavy metal biosorption performance (91.53 mg g−1) than many other sorbent materials reported in the literature. Thus, the current study showed that the biorefinery waste biomass of N. sativa L. could be used as an effective biosorbent for the biosorption of heavy metal from water environment, in addition to its use as an antimicrobial and antioxidant agent for multidirectional treatment of aquatic medium.

A novel biowaste-based biosorbent material for effective purification of methylene blue from water environment

The biowaste left over from the fixed oil biorefinery process of Nigella sativa L. plant was used as a new biosorbent for the biosorption of synthetic dye of methylene blue from water environment in this study. The main variables of biosorption operation such as methylene blue concentration, time, pH, and biosorbent amount were optimized by the batch-type experiments. The characterization, kinetics, equilibrium, and thermodynamics works were conducted to show the nature of methylene blue biosorption. The studies of Fourier transform infrared spectroscopy and Scanning electron microscopy indicated that the biosorbent possessed an inhomogeneous surface morphology including many cavities and protuberances, and a rich functional group profile. The optimum values of operating variables studied for the biosorption of methylene blue were determined as methylene blue concentration of 15 mg L−1, time of 360 min, pH of 8, and biosorbent amount of 10 mg. The experimental data of methylene blue biosorption followed the kinetics and isotherm models of pseudo-second-order (R 2: 0.98, AdjR 2: 0.98, and RMSE: 8.97) and Dubinin-Radushkevich (R 2: 0.99, AdjR 2: 0.98, and RMSE: 6.84), respectively, based on the statistical tests of coefficient of determination (R 2), adjusted coefficient of determination (AdjR 2), and root mean squared error (RMSE). The biosorption of methylene blue was a physical, spontaneous, and energetically favorable process (E DR: 3.48 kJ mol−1 and ΔG°: (−14.51) − (−10.02) kJ mol−1). This residual biological material from the fixed oil biorefinery process exhibited higher biosorption performance (187.46 mg g−1) than own unrefined (virgin) form and its modified, activated, and composite forms and many other sorbents reported in the literature. Hereby, the current work showed that this novel biowaste-based material could be used as an environmentally and economically promising biosorbent to effectively purify methylene blue from aquatic environment.

Study of adsorbent characteristics of palm leaves powder as a bio sorbent for removal of malachite green (MG) dye

Palm leaves were used as the bio sorbent in an adsorption uptake study to remove malachite green (MG). MG is a water-soluble cationic dye that looks as a green crystalline powder and is classified as a triphenylmethane. FE-SEM, FT-IR, and UV–vis absorption spectroscopy were used to examine the palm leaves. Using optical absorption spectroscopy, the influence of various factors such as time, initial dye concentration, colour discharged dilution, pH, and amount of bio sorbent on dye removal percentage was investigated. It was discovered that the dye removal rate increased with increasing pH but decreased in acidic medium.

Removal of Cd2+ metal ions from aqueous solutions by Na-alginate-containing composite biosorbent.

This research is related to the effect of alginate-containing composite biosorbent on the sorption capacity of heavy metal Cd2+ ions. The study aims to determine the character and optimization of the sorption of Na-alginate-containing composite biosorbent on the sorption of heavy metal Cd2+ metal ions in an aqueous solution. Optimum conditions of parameters such as biosorbent amount, pH value effect, concentration effect, contact time, and temperature that affect the sorption of Cd2+ ions were determined. Langmuir, Freundlich, D-R isotherms were applied to the obtained data, and it was noted that the sorption Cd2+ ions are better explained with Freundlich and D-R models. The thermodynamic parameters (ΔGo, ΔHo, ΔSo) for Cd2+ sorption onto composite biosorbent were also determined given from the temperature dependence. The results suggested that composite biosorbent is suitable as a sorbent material for recovery and sorption of metal ions from aqueous solutions.

Apple stem as a high performance cellulose based biosorbent for low cost and eco-friendly adsorption of crystal violet from aqueous solutions using experimental design: Mechanism, kinetic and thermodynamics

In this work, apple stem as a novel cellulose based biosorbent, was used for adsorption of crystal violet from aqueous solution. The biosorbent was characterized by SEM and FT-IR. The effect of dominant parameters including pH, time, temperature, amount of biosorbent, and initial dye concentration on the adsorption of crystal violet were studied. Experimental design was used to describe the adsorption (%) as a function of the parameters via response surface methodology. At experimental optimum conditions consisting pH of 10, time of 20 min, temperature of 35 °C, amount of biosorbent of 20 mg, and initial dye concentration of 100 mg L −1 , the dye removal (%) of 96.0 ± 0.5 was acquired. The results of adsorption isotherm studies affirm the fitness and accordance of experimental data in Langmuir model with maximum adsorption capacity of 153.85 mg g −1 . The kinetic and thermodynamic parameters were assessed and the positive Δ H ∘ and Δ S ∘ values revealed the endothermic nature of the adsorption process. Moreover, the kinetic of crystal violet adsorption onto the apple stem conformed the pseudo-second order kinetic model. • Apple stem as a novel green biodegradable nano biosorbent. • Eco-friendly and low cost process to separate toxic dye as organic pollutant. • Optimization of the process using statistical and mathematical methods. • Maximum adsorption capacity of 153.85 mg g −1 with maximum dye removal of 96.0 ± 0.5.

Use of artificial intelligence for optimizing biosorption of textile wastewater using agricultural waste

ABSTRACT Most of the dyes are toxic and non-biodegradable in textile industry wastewaters. Therefore, removal of textile dye using agriculture waste becomes crucial for the environment. This can be accomplished by the biosorption process which is the passive uptake of pollutants by agricultural waste. In this study, Response Surface Methodology (RSM), Artificial Neural Network (ANN) and Adaptive Neuro-Fuzzy Inference System (ANFIS) were used to obtain optimum conditions for Methylene Blue (MB) removal using sugarcane bagasse and peanut hulls as low-cost agricultural waste. The experimental design was carried out to study the effect of temperature, pH, biosorbent amount and dye concentration. The maximum MB dye removal considering the effect of total dissolved solids from aqueous solutions of 74.49% and 67.99% by sugarcane bagasse and peanut hulls, respectively. The models specify that they could predict biosorption with high accuracy having R 2-value above 0.9. Statistical studies for RSM, ANFIS and ANN models were compared. Further, the models were optimized for maximum dye removal was at 1.21 g of biosorbent, pH 5.24, 31.24 mg/L MB concentration, 22.29°C of dye solution using sugarcane bagasse and at 1.37 g of biosorbent, pH 5.77, 36.7 mg/L MB concentration, 26.8°C of dye solution using peanut hulls. Additionally, Fourier Transform Infra-Red (FTIR) spectral analysis was also carried out to confirm the biosorption.

Bone meal and chitosan biocomposite: a new biosorbent for the removal of Victoria Blue R from wastewater

Chitosan immobilized bone meal (CIBM) was prepared as a biosorbent and Victoria Blue R (VBR) textile dyestuff was removed from wastewater using CIBM via biosorption. For this purpose; the effect of pH, contact time, ionic strength, temperature, biosorbent amount, and initial sorbate concentration were studied in the batch system. The specific surface area, surface morphology and functional groups of CIBM were characterized using BET, SEM and FTIR techniques. In the preliminary biosorption studies with pure bone meal, the removal yield of VBR from solutions of 25 mg/L VBR prepared in pure water was found to be 40.32%, while after modification with chitosan, a removal yield of 98.69% was achieved. As a result, it was observed that the biosorption efficiency increased significantly via modification. The biosorption equilibrium was set at the original pH of the dye with a biosorbent amount of 3.00 g/L in 15 min., which are the optimum adsorption parameters of the batch biosorption process. The removal of VBR from real wastewater was investigated, and the efficiency was found to be 90.40%. Biosorption-desorption cycle was investigated for 11 cycles, and CIBM almost maintained its biosorption capacity until the ninth cycle. Kinetic, isotherm and thermodynamic models were used to analyze the data obtained from the experiments. As kinetic models, pseudo-first-order (PFO) and pseudo-second-order (PSO) kinetic models were used along with the intraparticle diffusion model. For isotherm models, Langmuir, Freundlich, and Dubinin–Radushkevich (D-R) models were employed. It was determined that the experimental biosorption data obey the second-order kinetic model.

Decolorization of water through removal of methylene blue and malachite green on biodegradable magnetic Bauhinia variagata fruits

Batch sorption experiments were performed to investigate the potential of Bauhinia variagata fruit (BVf) and nano-magnetic Bauhinia variagata fruit (nM-BVf) to remove methylene blue (MB) and malachite green (MG). Equilibrium studies have been carried out using various experimental parameters such as the amount of biosorbent, initial solution concentration, contact time, pH, and temperature. The Langmuir, Freundlich, Scatchard, D-R and Temkin adsorption models were applied for the experimental information of MB and MG. The Freundlich model fits better than the Langmuir model. Freundlich model confirmed the magnificent dye sorption ability; 19.3 mg/g for BVf/MB, 21.2 mg/g for nM-BVf/MB, 19.7 mg/g for BVf/MG, and 30.1 mg/g for nM-BVf/MG. The pseudo-second-order kinetic model displayed a more suitable behavior to the experimental result for the removal of MG and MB. Thermodynamic parameters such as changes in Gibbs free energy (ΔG o), enthalpy (ΔH o), and entropy (ΔS o) were investigated and the fine details in the adsorption system were completed. The conclusion from this study is that the prepared nano biosorbent can be efficient for the removal of cationic dyes from wastewater.

Speciation and removal of selenium (IV, VI) from water and wastewaters based on dried activated sludge before determination by flame atomic absorption spectrometry

In recent decades, large amount of pollutants enter to the environment due to development of technology. Therefore it is necessary to use ecofriendly sorbent to eliminate pollutants. In this research, an dried activated sludge (DAS) was used to decrease Se(IV) pollutant and the effect of operating parameters such as solution pH, the amount of biosorbent, contact time, temperature and initial concentration of selenium were studied. Kinetic data was adjusted to the Langmuir and Freundlich kinetic equations. It was resulted that the Freundlich equation with a correlation coefficient of 0.9956 has the Best match to tetravalent selenium biosorption on DAS. The FT-IR results showed that the biosorption mechanism of selenium tetravalent metal ion on DAS is because of the existence of functional groups on the DAS surface can interact with Se(IV) ions. This study aims to investigate the biosorption capacity of the DAS for tetravalent selenium ions in aqueous solutions.
 

Removal of heavy metals from wastewaters using an effective and natural bionanopolymer based on Schiff base chitosan/graphene oxide

The nanochitosan was extracted from shrimp wastes and modified by Schiff base ligand and graphene oxide. Nanochitosan characterization was carried out by Fourier-transform infrared spectroscopy, scanning electron microscope, transmission electron microscopy, energy-dispersive X-ray spectroscopy, atomic force microscopy, and elemental analysis. This study was done to apply nanopolymer based on shrimp wastes as a biodegradable and recoverable biosorbent for removal of heavy of metals including copper and lead from contaminated water. The effects of initial solution pH, biosorbent dose, initial concentrations of lead(II) and copper(II) and contact time on the uptake capacity of the related metals were investigated using batch experiments. This nanopolymer biomass exhibited the highest uptake capacity for the metal ions (466 and 698.8 mg/g for lead and copper ions, respectively) at the pH value of 6.0, the biomass dose of 0.01 g/L, the metal concentration of 200 mg/L and the contact time of 420 min. These remarkable uptake capacity values indicate the high efficiency of the absorbent in wastewater treatment for heavy metals. Its structural stability and efficient absorbent ability were proved after four times absorption–desorption cycles. After these times, the uptake capacity decreased from 698.8 to 343.8 for copper and from 466 to 226.9 for lead, which are still high values for uptake capacity, and therefore this nanopolymer can be used in repeated absorption–desorption cycles. This nanochitosan is able to treat and absorb lead and copper from dense aqueous solutions with low amount of biosorbent.

Improvement in phenol adsorption capacity on eco-friendly biosorbent derived from waste Palm-oil shells using optimized parametric modelling of isotherms and kinetics by differential evolution

Phenolic pollution is very common, and toxic and water-soluble compounds and their derivatives can have significant harmful effects on humans, aquatic life, and the environment. The adsorption method is the most efficient way of handling, but the high cost of biosorbents obstructs the feasibility of this approach. In this study, biomass waste derived from Palm-oil shells is synthesized as an eco-friendly biosorbent for phenol adsorption. A novel inverse modelling method based on differential evolution optimization (DEO) is used to estimate the isotherm and kinetic model parameters, which facilitates to identify the inherent mechanisms in the adsorption process for removing phenol from wastewater. The DEO based model parameters provides an accurate prediction that is very close to experimental data, thus resulting in higher regression coefficient, R2, and relatively low Pearson’s Chi-square, χ2& root mean square error (RMSE). Phenol adsorption found to be following Langmuir isotherm (R2 = 0.995; χ2 = 0.429; RMSE = 4.420) and Pseudo 2nd order kinetic model (R2 = 0.992; χ2 = 0.346; RMSE = 15.58). With a biosorbent size of 0.85 mm resulted in phenol removal efficiency of 98 %. For large scale industrial process, a design methodology is developed to estimate the amount of biosorbent (Palm-oil shell-based GAC) required to meet the desired phenol removal concentration.

Removal of Chromium(VI) from Contaminated Water Using Untreated Moringa Leaves as Biosorbent

Biosorption of chromium (Cr(VI)) is studied by using raw (chemically not modified) Moringa (Moringa Oleifera) leaf powder without any pretreatment. Cr(VI) is one of the potentially harmful heavy metals found in industrial wastewater. In the Moringa leaf powder, the presence of a significant amount of organic acids form the source for the biosorption of Cr(VI). The concentration of Cr(VI) in the feed solution is varied and different dosages of the proposed biosorbent are used to study its efficiency in the removal of Cr(VI). The concentration of Cr(VI) is varied from 1 ppm to 20 ppm while the amount of biosorbent is varied from 0.5 g to 2.5 g. The equilibrium time for adsorption of Cr(VI) is observed to vary between half an hour and 90 min. The metal removal efficiency varied from 30% to 90% which is a significant achievement compared to other conventional methods which are either energy-intensive or not cost effective. The experimental results are modeled using Langmuir, Freundlich and Redlich–Peterson isotherms. The metal removal efficiency is attributed to the chelating effect of carboxylate and hydroxyl groups present in the moringa leaves and is confirmed from the FTIR analysis. Further molecular docking simulations are performed to confirm the binding of the metal to the speculated sites within the different acids present in the moringa leaves. Untreated green moringa leaf powder used as a biosorbent in this study leads to a sustainable and cheaper option for treating wastewater containing Cr(VI).

Biosorption of Methylene Blue Dye from Textile-Industry Wastewater onto Sugarcane Bagasse: Response Surface Modeling, Isotherms, Kinetic and Thermodynamic Modeling

This research focuses on the viability of removing basic dye methylene blue (MB) from water solutions by the application of sugarcane bagasse (SCB), an economic natural biosorbent. Batch experiments were conducted based on solution pH, contact period, initial adsorbate dye concentration, biosorbent amount, and temperature as independent variables by employing a central composite design approach of response surface methodology (RSM). With the use of RSM, the optimization of the MB biosorption process was carried out for maximum MB removal. The biosorption equilibrium of the dye solution was achieved after a contact time of 90 min and explained by the Langmuir and Freundlich isotherms. The biosorption data is employed for the kinetic modeling, from pseudo-first- and pseudo-second-order kinetic equation. Thermodynamic parameters (Enthalpy change ΔH, entropy change ΔS, and Gibbs free energy ΔG) were studied, which showed that biosorption is natural and endothermic in nature by reducing color randomness at the liquid and solid interface. Biosorbent characterization explained in this analysis is performed through Fourier-transform infrared spectroscopy before and after MB biosorption. Characteristic tests and separation factor proved that SCB was able to be used as an option to commercial biosorbents for the aqueous solution and removal of MB from wastewater.

An economical and effective alternative to commercial activated carbon for treatment of synthetic dye pollution in aquatic environment: surfactant modified waste product of Zostera marina

In this study, a novel biosorbent material was created from the waste product of Zostera marina with the surfactant modification (Hexadecyltrimethylammonium bromide) and tried as a potential alternative to commercial (powdered) activated carbon for the treatment of synthetic dye (Fast green FCF, triarylmethane (anionic) type) pollution in aquatic environment. The treatment capability of biosorbent material was evaluated by the parameter optimization, kinetic, thermodynamic, equilibrium and characterization experiments. The optimum treatment conditions were found to be pH of 3, biosorbent amount of 10 mg, synthetic dye concentration of 15 mg L−1, temperature of 45 °C and operation time of 360 min. It was determined that Elovich model was the most suitable model among the models used to define the biosorption kinetic data. The synthetic dye treatment process was endothermic and spontaneous. Freundlich model best explained the biosorption isotherm data. The biosorbent has very heterogeneous surface with the different functional groups. The treatment capabilities of prepared biosorbent and activated carbon under the same operating conditions were calculated to be 163.075 and 110.635 mg g−1, respectively. Hereby, these experimental findings show that the synthesized eco-friendly and low-cost biosorbent can be a powerful alternative to commercial activated carbon for the purification of synthetic dye pollution in water environment.

A renewable biosorbent material for green decontamination of heavy metal pollution from aquatic medium: a case study on manganese removal

In this study, a renewable biosorbent material was prepared from biological waste of widespread coastal plant, Zostera marina and employed for the biosorption of heavy metal pollution from water environment in green way. Manganese was selected as a model heavy metal to evaluate the treatment efficiency of prepared biosorbent. The batch biosorption behavior of biosorbent was investigated by the characterization, parameters evaluation, kinetic and equilibrium studies. The characterization study showed that the biosorbent has a rough surface and various binding groups for the heavy metal ions. The heavy metal concentration of 30 mg L−1, time of 60 min, pH of 6 and biosorbent amount of 10 mg were determined as the optimum biosorption conditions. The pseudo-second-order equation was found to be the best among kinetic models applied. The equilibrium data were best explained by Freundlich isotherm. The maximum biosorption efficiency based on Langmuir model was predicted as 58.426 mg g−1. Hence, the current work presents a renewable alternative biosorbent substance for the green treatment of heavy metal pollution from water medium.

Sustainable environmental remediation approach for biocide removal from water medium: a model biosorption study using activated biological waste

Within the scope of sustainable environmental remediation approach, a biosorbent prepared from the waste of Zostera marina coastal plant with chemical activation was used to effectively remove malachite green as a common biocidal agent from water environment in this work. The biocide treatment ability of activated biosorbent was interpreted through the characterization, optimization, equilibrium, thermodynamic, and kinetic studies. The characterization research showed that the biosorbent has an uneven surface and various active groups for the retention of biocide molecules. Langmuir isotherm was found to be the most appropriate model for the experimental equilibrium data. The maximum monolayer biosorption capacity was obtained as 103.834 mg g−1 under the optimum conditions (time of 6 h, pH of 4, temperature of 25 °C, biosorbent amount of 10 mg, and biocide concentration of 15 mg L−1). The biosorption system was determined to be spontaneous and exothermic in thermodynamic aspect. The experimental kinetic data were best described by the pseudo-second-order model. All these results indicated that the activated biological residue could be used as an environmentally friendly and effective biosorbent for the biocide removal from water environment in a sustainable way.

Kinetic and Thermodynamic Studies for the Efficient Removal of Methylene Blue Using Hordeum Murinum as a New Biosorbent

In this work, Hordeum murinum as a sustainable and cost-effective biosorbent material is utilized without any further treatment to remove Methylene blue dye from aqueous solutions. The effects of various parameters including pH, biosorbent amount, reaction time, initial concentration, and temperature are investigated. The results show that 94% of Methylene blue is removed using the optimal adsorption conditions of pH 5.6, biosorbent dose of 0.1 gm, 60 min equilibrium contact time, 20 mg/L of initial dye concentration at a temperature of 25 °C. Experimental results reveal that the adsorption kinetics can have the best description by employing the pseudo-second order model. The spontaneous and exothermic nature of the adsorption process is indicated by the negative values of the Gibbs free energy change and the enthalpy change, respectively. These results reveal that Hordeum murinum exhibited excellent performance for the removal of Methylene blue from aqueous solutions, which can make it very interesting as an alternative and effective low-cost biosorbent material.

Usage Potential of Sawdust as a Forest Industry Waste For Treatment of Colored Effluents

In the present study, the usage potential of sawdust as a forest industry waste was evaluated for the treatment of colored industrial effluents containing Fast Green FCF synthetic dye. The effects of various environmental variables such as pH, biosorbent amount, synthetic dye concentration and contact time on the dye removal ability of biosorbent material were studied in batch operating conditions. The kinetic and equilibrium studies were performed to elucidate the dye biosorption behavior of biosorbent. The synthetic dye biosorption capacity of biosorbent was highly affected by the environmental conditions. The kinetic and equilibrium studies showed that Elovich and Langmuir models were the best models for the elucidation of dye removal behavior of biosorbent. Based on Langmuir model, the maximum monolayer biosorption capacity under the optimum environmental conditions was estimated to be 26.834 mg g-1. The obtained results revealed that the forest industry waste biomass used has usage potential for the treatment of synthetic dye pollution in aquatic environments.

Utilization of Sawdust Waste Biomass as an Eco-Friendly Biosorbent for Bioremediation of Manganese Pollution in Aqueous Environment

In this study, the sawdust waste biomass was used as an eco-friendly biosorbent material for the bioremediation of manganese pollution in aqueous environment. The effects of various environmental variables such as pH, biosorbent amount, metal concentration and contact time on the manganese biosorption were studied in batch operating conditions. The kinetic and equilibrium studies were performed to elucidate the biosorption behavior of biosorbent material. The biosorption capacity of biosorbent was strongly influenced by the operating parameters. The experimental data were more successfully modeled by the pseudo-second-order kinetic model and Langmuir isotherm model compared to other models applied in the study. The maximum manganese removal capacity of biosorbent was found to be 25.655 mg g-1. These findings showed that the sawdust waste biomass can be used as an eco-friendly biosorbent material for the bioremediation of manganese pollution in aqueous environment.