Treatment of Laboratory Wastewater by Using Fenton Reagent and Combination of Coagulation-Adsorption as Pretreatment

Rachman, Susila; Agustina, Tuty Emilia; Ilmi, Nurul; Pranajaya, Violanda; Gayatri, Rianyza

doi:10.12911/22998993/151074

Cited by 3 publications

(4 citation statements)

References 9 publications

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“…Laboratory wastewater was prepared as much as 2 L in a 2L beaker and then added with 320 ppm of alum coagulant (Arita et al, 2022). Furthermore, laboratory wastewater that had been added with alum was stirred using a jar test.…”

Section: Coagulationmentioning

confidence: 99%

Laboratory Wastewater Treatment by Using Combination Methods of AOPs and Chemical-Physical Pretreatments

Agustina,

Arita,

Melwita

et al. 2024

Ecol. Eng. Environ. Technol.

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Experimental activities carried out in laboratories usually produce complex wastewater. Due to practicum and research activities in educational laboratories, the wastewater generating from these laboratories contains organic and inorganic compounds which are dangerous for the environment if disposed of without prior treatment. Apart from high chemical oxygen demand (COD) and biological oxygen demand (BOD) values, laboratory wastewater also often contains heavy metals such as zinc (Zn), copper (Cu), chromium (Cr), lead (Pb), and iron (Fe) which are included in the hazardous waste category and can pollute the ground water. Therefore, this wastewater must be treated properly. The objective of this study is to reduce the pollutant load contained in laboratory wastewater by using combination methods of advanced oxidation processes (AOPs), and chemical-physical treatment namely coagulation and adsorption processes. The photo-Fenton process was selected as one of AOPs applied in this treatment. The effect of molar ratio variation and irradiation time in the Photo-Fenton process on the pollution load in the form of pH, COD, BOD, TSS, and heavy metals of Zn, Cu, Cr, Pb, and Fe was studied in this research. The results of the analysis of untreated laboratory wastewater samples showed that laboratory wastewater did not meet the wastewater quality standards regulated by the government of Republic of Indonesia. In this study, laboratory wastewater was treated using the pretreatment method of coagulation with alum and adsorption with activated carbon. The best results in this study were obtained in the final adsorption results after treatment with the photo-Fenton method using a molar ratio of 1: 300 for 60 minutes in which several parameters such as pH, Zn, Cu, Pb, and Fe had met environmental quality standards with the value of each parameter of 7; 0.01 mg/L; 2.9 mg/L; 0.03 mg/L; and 3.15 mg/L respectively. Meanwhile, the percentage reduction of COD, BOD, and TSS parameters was 87.49%, 87.02%, and 72.45% respectively.

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Section: Coagulationmentioning

confidence: 99%

Laboratory Wastewater Treatment by Using Combination Methods of AOPs and Chemical-Physical Pretreatments

Agustina,

Arita,

Melwita

et al. 2024

Ecol. Eng. Environ. Technol.

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“…Laboratory wastewater was measured as much as 10 L. The laboratory wastewater sample was put into the coagulation tank, then added the alum coagulant as much as 480 ppm/liter. The coagulant dose applied, after multiplied three times of those found from previous study (Arita et al, 2022). Furthermore, the laboratory wastewater that had been added with alum was stirred using an agitator.…”

Section: Coagulation Processmentioning

confidence: 99%

“…After coagulation, the process was continued to the adsorption process by adding activated carbon that has been activated with an optimum dose of 10g activated carbon/liter of wastewater (Arita et al, 2022). Stirring was carried out at 500 rpm for 60 minutes.…”

Section: Adsorption Processmentioning

confidence: 99%

Testing of a Laboratory Wastewater Treatment Prototype Using Coagulation, Adsorption and Photo-Fenton Processes

Novia,

Agustina,

Riduan

et al. 2023

Ecol. Eng. Environ. Technol.

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Research activities carried out in the laboratory produce a complex wastewater which can damage the environmental system if it is directly disposed of without treatment. A laboratory wastewater treatment prototype was designed and constructed to process the wastewater based on the previous research. The prototype is needed in the laboratory to treat the wastewater before discharged into the environment, so it can meet the wastewater quality standards. The wastewater treatment aimed to reduce the pollutant level contained in laboratory wastewater. The objective of this study is to test the efficacy of the prototype. This test was conducted using a combination process of coagulation, adsorption, and photo-Fenton methods. The pollutant parameters were descripted in the form of pH, TSS, COD, BOD, heavy metals of Cadmium, Zinc, Copper, Chromium total, Lead, and Iron. The test of wastewater treatment prototype was carried out using the optimum conditions obtained in previous studies. The best results found from previous studies were attained at laboratory scale by means of ordinary glassware. The results of the initial analysis of laboratory wastewater sample showed that the laboratory wastewater did not meet the wastewater quality standards stipulated in the Minister of Environment regulations of the Republic of Indonesia No.5 of 2014 on Wastewater Quality Standards. In this study, the laboratory wastewater was treated by applied the pre-treatment method of coagulation and adsorption, using alum and activated carbon, separately. By using the wastewater treatment prototype, the removal percentage of COD, BOD, and TSS of 31.47%, 39.90%, and 90.24%, was reached, respectively. The heavy metals content was also reduced, with the removal percentage

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“…The basic principle of the system is to utilize aerobic and anaerobic bacteria in the filter to decompose pollutants in water that occur in the process of releasing nitrogen ions that were previously bound to ammonia (NH3) into nitrates and nitrites. As a result, the degree of acidity (pH) in water decreases and tends to be acidic, and increases the total suspended solids (TSS), which can be harmful to the environment [3,4]. pH is a degree that indicates the acidity or alkalinity of a solution.…”

Section: Introductionmentioning

confidence: 99%

Neutralization of Acidity (pH) and Reduction of Total Suspended Solids (TSS) by Solar-Powered Electrocoagulation System

Fikri,

Sulistiawan,

Riyanto

et al. 2023

Civ Eng J

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This study investigates the effect of electrocoagulation contact time on the pH and TSS of wastewater discharged from the wastewater treatment plant (WWTP) of the Psychiatric Hospital of West Java Province. The experiment followed the pretest-posttest control group design. This study involved testing 56 wastewater samples six times before and after treatment. Each treatment was repeated four times, and there was one control group for each repetition. The electrocoagulation tool used in this study consisted of six 1-mm electrode plates that were 8 cm apart, a current strength of 5A, a voltage of 12V, and a 50-Watt solar panel. The data were analyzed using descriptive and inferential statistics. The results showed that all electrocoagulation contact time treatments had a significant effect on increasing the pH and the TSS. Additionally, the electrocoagulation tool was found to be effective, stable, portable, and environmentally friendly, with a self-cleaning system that reduced operational costs and saved electricity through the use of solar panels. This study contributes to the development of an effective electrocoagulation toll for wastewater treatment and the determination of the optimal contact time for the tool, providing a practical solution to overcome the problems of pH and TSS in wastewater. These findings can be applied to other wastewater treatment plants, thus improving the quality of discharged wastewater. Doi: 10.28991/CEJ-2023-09-05-09 Full Text: PDF

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Treatment of Laboratory Wastewater by Using Fenton Reagent and Combination of Coagulation-Adsorption as Pretreatment

Cited by 3 publications

References 9 publications

Laboratory Wastewater Treatment by Using Combination Methods of AOPs and Chemical-Physical Pretreatments

Laboratory Wastewater Treatment by Using Combination Methods of AOPs and Chemical-Physical Pretreatments

Testing of a Laboratory Wastewater Treatment Prototype Using Coagulation, Adsorption and Photo-Fenton Processes

Neutralization of Acidity (pH) and Reduction of Total Suspended Solids (TSS) by Solar-Powered Electrocoagulation System

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