Activated Carbon Mass Research Articles

Optimization of Domestic Wastewater Treatment Using a Mixture of Coconut Shell Activated Carbon Adsorbent and Fly Ash

Utilization of solid waste raw materials in the form of coconut shells and fly ash as adsrobents for domestic wastewater treatment. This study aims to optimize the effect of coconut shell activated carbon and fly ash with variations in mass ration and stirring time on changes in pH, COD, BOD, ammonia, TSS, and total coliform by adsorption on domestic liquid waste to meet waste quality standards. The research method includes the preparation of activated carbon from coconut shell, SEM characterization and experiments of a mixture of coconut shell activated carbon mass and fly ash (5:10, 10:5, 5:15, 15:5 grams) with variations in stirring time (30 minutes, 60 minutes). The results of the study, the most optimal mixture for changes in pH, ammonia, TSS, COD, BOD, total coliform parameters in domestic wastewater was a mixture of coconut shell activated carbon adsorbent mass of 15 grams and fly ash of 5 grams with a stirring time of 60 minutes.

Adsorption Capacity and Efficiency of Composite Thin Sheet Made of Chitosan-Activated Carbon on The Adsorption of Methylene Blue

Abstract Methylene blue (MB) is a waste dye produced by textile industries. One way to reduce MB in polluting the environment is using MB adsorbent materials, such as chitosan (CS)-based composites. This research aims to investigate the adsorption capacity and efficiency of chitosan-activated carbon composites (CS-AC), which are in the form of thin sheets, on MB adsorption. The composite was made by manually mixing the chitosan and activated carbon, and then the mixture was poured into a dish and dried at around 50 °C until a dry, thin sheet was formed. The composites were prepared with varying activated carbon mass concentrations (25%, 50%, 75%, and 100% of chitosan mass). The MB adsorption measurements were carried out using UV-Vis spectroscopy. Adsorption capacity and adsorption efficiency increase with increasing activated carbon content, and the composite containing activated carbon mass 100% of chitosan mass shows the highest values, namely 11.51 mg/g and 95.93%, respectively. Furthermore, the values of adsorption capacity and adsorption efficiency are also influenced by the initial MB concentration and mass of the adsorbent. The adsorption capacity increases with increasing initial MB concentration but decreases with increasing adsorbent mass. Adsorption efficiency increases with increasing initial MB concentration and adsorbent mass.

ADSORPTION OF TEXTILE DYE ACID GREEN 42 (AG42) ON ACTIVATED CARBON FROM CHICKEN EGGSHELLS (CAC30)

The present work is a contribution to the valorization of chicken eggshells, an abundant waste product in Cote dIvoire, as a credible alternative to commercial activated carbon.Chemicalactivation of the precursorwascarriedoutwith30%phosphoricacidfor24h of contactin a ratio of 200 g of material to 100 mL of acid, and calcined at 600°C for 1h. The surface of the activated carbon obtained was studied using the BET (Brunauer-Emmett and Teller) method, which consists in establishing the adsorption isotherm for nitrogen N2. The results reveal a specific surface area of 5.42 m2.g-1, 65.68% of micropores and a pHzc of 7.40. Chemical characteristics determined by Boehms method indicate the basic nature of the surface. The elemental composition is dominated by oxygen(50.53%),calcium(30.78%)andcarbon(11.33%).The experiments demonstrated that the removalof AG42by adsorption on CAC30 is influenced by contact time, activated carbon mass, solution pH, and initial concentration and temperature of the dye aqueous solution. Adsorption kinetics followed the pseudo-second-order model and the isotherm is described by the Langmuir model. The thermodynamic study revealed the spontaneous (ΔG < 0) and exothermic (ΔH < 0) nature of dye adsorption, with a well-organized distribution of dye molecules at the adsorption sites (∆S°< 0).

Making Activator Materials Active Carbon From Wedi Skin Salak (Salacca edulis Reinw) With ZnCl2 Activator as Adsorbent to Reduce Fenol Content

Making Activator Materials Active Carbon From Wedi Skin Salak (Salacca edulis Reinw) With ZnCl2 Activator as Adsorbent to Reduce Fenol Content. Wedi salak skin in Bojonegoro as an activated carbon material can provide an alternative for activated carbon manufacturing materials by utilizing environmentally friendly natural materials. The wedi salak skin is modified by treatment in the sun, in the roast, and in the oven in the manufacture of activated carbon which is then activated with ZnCl2 and then tested the adsorbs power of this salak skin activated carbon against phenol reduction. The adsorbent material that reduces the concentration of phenol the most is the roasted adsorbent material with a final phenol concentration of 2.15 mg/L so that the concentration of phenol absorbed is 297.85 mg/L at a mass of 1.5 g. The results of the analysis show that each variation of the activated carbon variation can reduce the concentration of phenol. The results obtained from this study are the type of activated carbon material whose highest absorption efficiency is the type of activated carbon material roasted at 99.28% with a mass of activated carbon of 1.5 g. Based on the results of the analysis, it can be seen that each variation of the type of activated carbon material will experience a decrease in concentration as the mass of the adsorbent increases. The greater the mass of the adsorbent, the adsorption ability will also increase. Each type of activated carbon material also experienced an increase in percent removal along with an increase in adsorbent mass. The results of research on the effect of activated carbon mass, also show that the adsorption capacity value decreases with increasing adsorbent mass. In this research data, the largest capacitance value was 112.87 mg/g at the smallest mass of 0.5g. The decrease in adsorption capacity is caused by the active side of the adsorbent that has not all bonded with the adsorbate.

Synthesis of HZSM-5@activated carbon for improving aromatic production from catalytic pyrolysis of biomass

HZSM-5 widely used for the catalytic pyrolysis of biomass exhibits the drawbacks of high diffusion resistance and large coke production. To effectively enhance the catalytic efficiency and alleviate the coke deposition, a novel promising catalyst, HZSM-5 coated activated carbon (HZSM-5@AC), was prepared for the first time for in-line upgrading the pyrolysis products of soybean straw. Various catalysts including HZSM-5, activated carbon, and the HZSM-5@AC catalysts with different HZSM-5 to activated carbon mass ratios were characterized. The results showed that the HZSM-5 was successfully coated on the surface of activated carbon and the addition of activated carbon introduced a mesoporous structure and more acidic sites to the catalyst. The catalytic performance on the biomass conversion showed that the catalyst with HZSM-5-to-activated carbon mass ratio of 18:5 (18HZSM-5@5AC) had the highest catalytic efficiency on the conversion of biomass into aromatics with a selectivity of 99.5%, including 75.68% of benzene, toluene, and xylenes (BTX) with a yield of 74.68 mg/g. Moreover, a possible pathway for HZSM-5@AC catalyzed biomass pyrolysis was proposed through analyzing the conversion of model compounds. The catalyst cycling experiments demonstrated the higher stability of HZSM-5@AC than the parent HZSM-5 and activated carbon. TG, FTIR, Raman and SEM showed that the spent HZSM-5@AC was hardly structurally changed with a low coke yield of 0.08%. However, the spent HZSM-5 was partly structurally deactivated by large aromatic ring systems with a coke yield of 3.74%. SEM results also showed that a large amount of polymerized material encapsulated the surface of the spent HZSM-5.

Investigation of the Desalination Capacity of Activated Carbon Materials from Water Hyacinth (<i>Eichhornia crassipes</i>) Stems

To reduce the hazards brought by water hyacinth, many applications of water hyacinth have been studied and continuously expanded. The large biomass of water hyacinth is applied in many fields such as for wastewater treatment, wastewater purification, biological raw material sources, animal feed production, medicine, antioxidants, agriculture, and household appliances. This research investigates the desalination capacity of freshwater hyacinths, raw materials from water hyacinths, biochar, and activated carbon materials from water hyacinth stems. Results have shown that the suitable temperature for charring fresh water hyacinth is 420 °C. The activated carbon from the water hyacinth stems with a BET surface area of 200.4 ± 1.9 m²/g can be desalinated under the conditions of 0.4 g of activated carbon mass, 15 min of reaction time, 2.0 ppt of salt concentration, and at neutral pH. In contrast, raw materials from water hyacinths and biochar were unable to desalinate. This study evaluates the desalination ability of the activated carbon material of water hyacinth.

Synthesis of Activated Carbon from Cassava Peeling and Its Applications for Removal of Methylene Blue

The present work aims to increase the value of cassava peelings by its transformation in activated carbon. The activated carbon was prepared by chemical activation using 40% of phosphoric acid solution as activation agent with an impregnation rate equal to 1.5 g of acid/g of precursor. The carbonization was carried out at 400°C for 90 minutes. Bohem titration and the Lopez-Ramon method were used to determine the chemical characteristics of the prepared activated carbon (ACCP), while surface area of the sample was estimated by methylene blue and iodine index methods. The best kinetic model that describes the adsorption reaction of MB on ACCP activated carbon is the pseudo-second-order model. Adsorption isotherm was also evaluated. Activated carbon (ACCP) has the following characteristics: pH<SUB>PZC</SUB>= 3.9; Iodine index value equal to 914.4 mg/g and methylene blue index value equal to 643.72 mg/l. ACCP has more acid functions (5.95 meq/g) than basic function (1.3 meq/g). The “batch method” was used for pollutant removal and it reveals that the contact time value is equal to 40 minutes. The influence of activated carbon mass on its methylene blue adsorption capacity was studied. The experimental data are in agreement with the Langmuir and Freundlich isotherm models. The maximum adsorption capacity obtained using Langmuir isotherm model was 75.93 mg/g.

Utilization of Wasted Cooking Oil and Essential Oil of Sweet Orange Peel (Citrus sinensis) as Aromatherapy Candles

<p><strong>Abstract.</strong> Utilizations of waste cooking oil can be projected to be candles. Sweet orange (<em>Citrus sinensis</em>) peel, considering the large amount of this abandoned waste, also can be utilized as essential oil. This research was conducted to examine the production of aromatherapy candles by purifying the wasted cooking oil and adding the sweet orange peel essential oil. Steam distillation method was used to extract essential oils by determining the effect of raw material conditions on the yield obtained. The essential oils obtained from fresh peel was 1.87% of yield with 94.37% limonene, while dry one was 2.16% yield with 94.67% limonene by GC-MS analysis. Adsorption method by activated carbon was carried out to purify the wasted cooking oil as candle materials, varied by 7%, 10%, and 13% mass of activated carbon. The addition of the highest mass of activated carbon gave the lowest absorbance and indicated that the purified oil was the brightest. Utilization of refined wasted oil was mixed with stearin and sweet orange peel essential oil of 2%, 4%, and 6% by weight as aromatherapy candle product. Characteristics of candle was investigated by analyzing the melting point, burning time, organoleptic, and preference test for respondents and resulted that all characters meet Indonesian National Standard. Purification of wasted cooking oil varied by activated carbon mass influenced the color of the candles. The addition of essential oils influenced the smell, melting point and burning time of candle, the essential oil addition makes lower melting point and faster burning time.</p><p><strong>Keywords:</strong></p><p align="left">Aromatherapy Candles, Sweet Orange Peel Essential Oil, Wasted Cooking Oil</p><p><strong><br /></strong></p>

Reduction of Heavy Metal (Pb) ions in industrial waste using activated carbon based on used catalysts

Used catalyst-based activated carbon is activated carbon made from used catalysts from the crude oil cracking process. The used catalyst used is a type of crystalline Zeolite with a regular structure, which contains elements of Silica Oxide, Alumina Oxide, and Calcium Oxide. The use of organic activated carbon to treat waste has been widely used, the use of used catalyst waste as activated carbon is very potential because the catalyst used for oil company cracking is no longer used. Tofu industry is one of Indonesia's industries dominated by small-scale businesses with limited capital, so most tofu industries do not have waste treatment units, where liquid waste is directly discharged into sewers or water bodies without treatment first. Tofu industrial waste contains pollutants both organic and inorganic. Initial analysis of tofu industry liquid waste containing Pb metal. This study aims to determine the effect of mass variation and stirring time of used catalyst-based activated carbon adsorbent on reducing Heavy Metal Ions (Pb) in tofu industry liquid waste. The adsorption process is carried out with mass variations of activated carbon of 5, 10, 15, 20, and 25 grams. Stirring time variations are 30, 60, 90, 120, and 150 minutes. From the results of the study, it is known that the best condition for reducing Pb content was obtained at a stirring time of 60 minutes and a large catalyst-based activated carbon mass of 66.33%

Pengaruh Massa Karbon Aktif dan Konsentrasi Adsorbat dalam Penyerapan Zat Warna Metilen Blue

In this study, the effect of activated carbon mass and methylene blue solution concentration on adsorption capacity, the length of time required to reach equilibrium, and isothermal modeling of activated carbon material in the adsorption process were studied. The variables used are the mass of activated carbon as much as 100 mg, 75 mg, and 50 mg and the concentration of methylene blue solution of 20, 40, 60, 80, and 100 ppm. The adsorption process in the three mass variations occurred at an optimum contact time of 80 and 90 minutes with an adsorption percentage of 99%. Adsorption of methylene blue dye by activated carbon from durian peel follows Freundlich isothermal modeling with a K value of 15846.44 mg/g and 1/n of 23.666 which shows an indicator of concentration dependence of the amount of energy associated with the adsorption process.

Phenol adsorption onto olive pomace activated carbon: modelling and optimization

Purpose. To depollute water contaminated by phenol using the adsorption process in a batch reactor with valorization of olive pomace for the preparation of activated carbon to be used as an adsorbent. Methodology. In this present work, study on the influence of four principal parameters on the adsorption yield during the treatment of polluted water by the process of adsorption were studied, namely: the activated carbon mass, the contact time, the phenol initial concentration and the stirring speed. In addition, the process was optimized with full factorial designs using the response surface methodology by the MINITAB software. Findings. The phenol removal by adsorption on the activated carbon made from olive pomace makes it possible to achieve an adsorption efficiency of 91 % with the use of following optimal conditions: adsorbent mass of 0.48 g, a contact time of 110.80 min, a phenol concentration of 100.98 mg/L, and a stirring speed of 462.89 rpm. Contact time and adsorbent mass showed a positive effect on phenol removal efficiency. The principal effect results illustrate that all four examined factors significantly affected the phenol removal by olive pomace activated carbon with a confidence level of 95 %. Originality. The experimental data of the phenol adsorption on the olive pomace activated carbon were examined by adjustment of a second-degree polynomial model. This model is validated by a statistical method using an analysis of variance (­ANOVA). Numerical optimization was performed by the desirability function to identify the optimal parameters for maximum phenol recovery. Practical value. In order to highlight a process for treating waters contaminated with phenol, we have chosen the processes that are considered to be best suited, which is adsorption with the recovery of a waste such as an adsorbent, which is prepared by physical and chemical activation of olive pomace. The full factorial design applied makes it possible to show the influence of each parameter independently and their dependencies, as well as to find the optimal experimental conditions quickly which lead to the realization of this process.

Improving the Radon Adsorption Capacity of Activated Carbon by Liquid Nitrogen Modification

Radon is a naturally occurring radioactive inert gas that poses a significant threat to the human health. Coconut shell activated carbon has been verified to be the best radon adsorbing material, but its radon adsorption capacity still cannot meet the requirement of industrial applications. Activated carbon modification using liquid nitrogen is an effective method for improving the radon adsorption capacity, but it is necessary to determine the conditions for large-scale production. In this study, the influence of environmental temperature, container geometry, and amount of activated carbon and liquid nitrogen on the modification effect are examined. The results show that the activated carbon has the best modification effect when the container is placed in a water bath at 50 °C. The container geometry and activated carbon mass have a minor influence on the modification effect. Further, the radon adsorption capacity is increased by 36% when 6.5 L of liquid nitrogen is added to 1 kg of activated carbon. The characterization results reveal that the chemical structure and elemental content of the activated carbon do not change after modification, but the number of micropores is significantly increased, especially the micropores with a size of 0.5-0.6 nm, which is related to the radon adsorption capacity of the modified activated carbon. Overall, the liquid-nitrogen-based modification is a simple, environment-friendly, and low-cost method to improve the radon adsorption capacity of activated carbon, which can be used in the large-scale production of highly efficient radon adsorbents.

Penurunan Kadar Chemical Oxygen Demand (COD) pada Limbah Cair Industri Tahu Menggunakan Arang Aktif dari Pelepah Kelapa Sawit (Elaeis guenensis Jacq.)

Oil palm midribs (Elaeis guenensis Jacq.) are one of the wastes from oil palm plantations. The high carbon element composition in the palm midribs has the potential to be used as charcoal or activated carbon. Activated carbon can reduce COD levels in tofu industrial wastewater. This study aims to determine the effect of activated carbon mass and contact time on decreasing COD levels in tofu industrial wastewater. Palm midrib charcoal was activated using HCl 1N with the independent variable of activated charcoal mass (1, 3, 5, 7, and 9 grams) and contact times (30, 60, 90, 120, and 150 minutes), while the dependent variable was the percentage decrease COD levels. Activated charcoal from the palm midribs was in accordance with SNI 06-3730-1995 concerning the Quality Standard of Activated Charcoal. The effect of the adsorbent mass showed that the mass increase in activated charcoal was directly proportional to the percentage decrease in COD levels in the tofu industrial wastewater, while the optimum contact time of activated charcoal was obtained at 60 minutes with a decrease in COD levels of 82.13%.

WASTEWATER TREATMENT BAKERY USING ACTIVE CARBON OF WATER HYACINT AND BOILER WASTE

Bakery industry wastewater usually comes from the washing process of production equipment and generally contains organic compounds, oils, fats, and surfactants. Efforts are needed to overcome these problems so that contamination due to bakery waste can be handled. This study aims to determine the ability of water hyacinth activated carbon and boiler waste activated carbon in improving the quality of wastewater through the adsorption process so that it is expected to be in accordance with the wastewater quality standards set by the Central Java Regional Government. The variables used are activated carbon mass, time, and temperature of the adsorption process. The results showed a change in color and odor, from greenish to clear, and a reduction in fishy odor in the wastewater. A decrease in COD value and an increase in pH also occurred, with the best results being obtained using activated carbon from boiler waste at a mass weight of 20 g, a time of 90 minutes, and a temperature of 45 °C. The best results are obtained by combining activated carbon from water hyacinth and boiler waste at a mass ratio of 1:19 g, a time of 120 minutes, and a temperature of 35 °C.Keywords: Bakery Industry Wastewater, Adsorption, Activated Carbon, Color, COD, pH

A membrane-less molten hydroxide direct carbon fuel cell with fuel continuously supplied at low temperatures: A modeling and experimental study

A molten hydroxide direct carbon fuel cell (MHDCFC) is a promising electricity generation technology. Anode behavior significantly affects the cell performance. Intermittent fuel supply is a bottleneck restricting the commercialization of the cell. An MHDCFC with fuel continuously supplied is proposed in this study. Anode structural parameters are optimized through a computational fluid dynamics (CFD) model and a current model. The optimized current collector thickness, inlet number, inlet diameter are 0.2 cm, two, and 6 mm based on reactant distribution uniformity and current. Then, a membrane-less cell is built. Influence of carbon type, particle size, carbon mass fraction, and temperature on the cell performance are investigated. The cell fueled with activated carbon holding relatively large specific surface area and high conductivity achieve a higher performance. A relative small carbon mass fraction and large particle size decrease the charge transfer resistance and improve the cell performance. The cell may obtain a higher performance at 390 ℃ comparing with that under 400 ℃. The cell exhibits a power about 21 mW when activated carbon mass fraction, particle size, and temperature are respectively of 3.33%, 0.5–0.85 mm, and 390 ℃. The model and experiment demonstrate the feasibility of a continuous MHDCFC operating at a low temperature.

ANALISIS PERFORMA KARBON AKTIF KULIT BAWANG MERAH (ALLIUM CEPA SKIN) TERHADAP PERUBAHAN KARAKTERISTIK LIMBAH AIR ACCU

Onion peel is one of the solid waste produced either from the onion processing industry or waste from household waste. Onion skin contains cellulose compounds that are quite high, which is 41-50% as well as aromatic compounds. It is underlying that onion skin can be used as a raw material in the manufacture of activated carbon. One of the uses of activated carbon is as an adsorbent in the conditioning of pH and TDS levels in battery water waste. The manufacture of activated carbon is carried out with 3 main stages, namely carbonization with a temperature of 400oC for 1 hour, sorting particle sizes of 10-16 mesh and 60-200 mesh, and variations of NaOH activators of 10%, 15%, and 25%. Other variations used in the study included the use of 12V/100W floodlights in the purple, yellow, and no lighting spectrum, as well as an active carbon mass of 0.5 and 1 gram. The best adsorption rate is obtained with variations in activated carbon 60-200 mesh, activated carbon mass against a solution of 1 gram, and with purple lighting with a wavelength of 380-450 nm where the initial pH 2 and final pH of 4.8 and TDS decreased by 180 Ppm where the initial TDS is 9,690 Ppm and the final TDS is 9,510 PPM and has the potential to produce hydrogen.

Modeling and Simulation of a Two-Stage Air-Cooled Adsorption Chiller with Heat Recovery Part II: Parametric Study

This study is the second part of the theoretical study of “Modeling and Simulation of a Two-Stage Air-Cooled Adsorption Chiller with Heat Recovery”, which is based on developing a theoretical model for a two-stage adsorption chiller with an activated carbon/methanol pair. The following models were conducted numerically using MATLAB. The model was based on 10th order differential equations; six of them were used to predict bed, evaporator and condenser temperatures, while the other four equations were used to calculate adsorption isotherm and adsorption kinetics. In this second part, bed heat exchangers and evaporator and condenser heat exchangers are studied by varying the parametric design of a chiller. This includes but is not limited to activated carbon mass inside a single bed, overall heat transfer coefficient for the bed and evaporator and the mass flow rates of all components comprising the chiller. The optimum values increased the COP from 0.35 to 0.4, while the cooling capacity was slightly changed. The COP is 95% of a Carnot cycle working at hot water temperatures as low as 60 °C, and 90% at hot water temperatures as high as 90 °C. It was found that the simulation model results for the two-stage air-cooled chiller agreed well with the experimental data in terms of cooling capacity (6.7 kW for the model against 6.14 kW for the experimental result at 30 °C cooling water temperature). The model optimized the adsorption/desorption time, switching time and heat recovery time to maximize both cooling capacity and COP. Moreover, the model is used to study the effect of activated carbon mass, size of beds and mass flow rates of cooling, heating, chiller and condenser on both cooling capacity and COP.

ANALYSIS AND OPTIMIZATION OF ACTIVATED CARBON COATED HEAT SINKS

With the enhancements in nanotechnology, electronic devices shrank in size which led to a necessity to develop efficient thermal management strategies. These small electronic devices could be thermally managed through passive systems provided that effective materials are developed. Here, we use a layer of activated carbon on top of anodized aluminum heat sinks to utilize the sorption cycle of atmospheric water to create a desorption induced evaporative cooling effect. The material properties of the activated carbon lead to enhanced cooling by radiation and desorption, while the geometry of the heat sinks ensure surface area maximization. We develop a numerical simulation platform to determine the optimum geometry and the optimal activated carbon coating mass. Our results show that as the fin diameter and spacing shrink, and as the activated carbon mass increases within the considered range (0-100 mg), effective cooling of the chip could be achieved. We further employ our simulations to decouple the effects of desorption, radiation, and convection. Our analyses reveal that desorption only plays a vital role during the initial periods of operation, while cooling due to radiation and convection leads to an ≈20% increase in the overall steady-state heat transfer coefficient. This study goes beyond introducing a passive thermal management strategy for small electronic chips by providing a link between mass diffusion and thermal processes for effective transient operation of thermal devices.

INSIGHT INTO THE OPTIMIZATION OF MASS AND CONTACT TIME IN TWO-STAGE ADSORBER DESIGN FOR MALACHITE GREEN REMOVAL BY COCONUT SHELL ACTIVATED CARBON

The present work was aimed at evaluating the traits of a two-stage adsorber in optimizing the mass and contact time to achieve the desired removal performance. Data from literature for malachite green removal by coconut shell activated carbon in one-stage batch adsorber were taken as the basis for the simulation. Results show that the activated carbon mass was reduced by 22.4%, i.e., from 0.1 g to 0.078 g for 100 mL effluent, while the contact time was minimized from 30 min to 1.43 min for the removal of 50 mg/L dye in the two-stage adsorber. In the performance evaluation, the activated carbon mass in stage-1 is higher than that in stage-2 to lessen the load in accomplishing the removal at minimum dosage. The findings suggest that the two-stage adsorber design is economically viable for removing the dye in wastewater treatment.
 Keywords: Coconut shell activated carbon, malachite green, two-stage adsorber, mass optimization, time optimization

Integration of Improved Methods for the Treatment of Wastewater from a Soft Drink Industry

Beverage companies produce a large amount of wastewater in the cleaning step of returnable glass bottles. This study aimed to investigate combined processes (coagulation/flocculation, adsorption, and membrane separation) to treat the effluent from the washing machine of returnable soft drink bottles. Tests were conducted with aluminum sulfate, ferric chloride, and tannins (TANFLOC®) powder as coagulants/flocculants in different concentrations. After choosing the best coagulant, new tests were repeated by adding activated carbon. Based on the coagulant's best condition and activated carbon mass, the treated samples were subjected to a separation step with the ultrafiltration membrane (UF). The best treatment condition was the combined methods (TANFLOC + activated carbon + UF membrane), which showed a removal efficiency of 63.64, 54.92, and 64.98% for Chemical Oxygen Demand (COD), Total Organic Carbon (TOC), and Biochemical Oxygen Demand (BOD), respectively. The BOD values are due to the presence of sugars in the effluent since its characteristics, such as high polarity and size less than 1 kDa, are unfavorable for the coagulation and UF processes, respectively. However, BOD removal efficiency was approximately 5% higher than the minimum required by legislation, which requires at least a 60% decrease in the raw effluent.