Adsorption of Mercury Using Different Types of Activated Bentonite: A Study of Sorption, Kinetics, and Isotherm Models

Naswir, Muhammad; Jalius, Jalius; Natalia, Desfaur; Arita, Susila; Wibowo, Yudha Gusti

doi:10.23955/rkl.v15i2.17784

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…50 mg/L, LDHs dose of 0.5 g/L, pHe 6.5-7.0, and various contact times from 5 to 300 minutes. Figure 3 shows that significant amount of arsenic was adsorbed in the first 10 minutes due to the concentration of solution and the vacant side of adsorption are quite high (Naswir et al, 2020). After that, the removal of arsenic increased slowly until the equilibrium time was reached.…”

Section: The Effect Of Contact Time On As (V) Adsorption Onto Mn-fe Ldhmentioning

confidence: 99%

Application of Mn-Fe Layered Double Hydroxide as an Adsorbent for the Removal of Arsenic from Synthetic Acid Mine Drainage

Irawan

Sari

Yulianingtias

et al. 2021

J. Rekayasa Kim. Lingkung.

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The Mn-Fe layered double hydroxide using chloride in the interlayer anion was successfully synthesized using chemical co-precipitation methods. The Mn-Fe LDH was then applied as adsorbent for arsenic removal from synthetic acid mine drainage. The adsorbent characterizations of SEM and XRD analysis showed that the Mn-Fe LDH had many different functional groups and a high specific surface area for the adsorption processes. The morphological structure of Mn-Fe LDH by the SEM-EDS analysis method shows a round shape structure with a particle size of about 1 μm, and the XRF analysis method shows that the Mn and Fe elements dominate more than other components. Batch adsorption experimental conducted using the Mn-Fe LDH with the interlayer anion of chloride as an adsorbent to study the effect of contact time, equilibrium pH, and temperature on the arsenic removal. The Mn-Fe LDH showed high adsorption uptake capacity and selectivity for the arsenic in the synthetic acid mine drainage. The adsorption and ion exchange between interlayer chloride anions in Mn-Fe LDH and As (V) solution was the main adsorption mechanism. Therefore, the Mn-Fe LDH can be used as an adsorbent in water and wastewater treatment. In contrast, this research has the potential to be processed and developed into advanced materials.

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Section: The Effect Of Contact Time On As (V) Adsorption Onto Mn-fe Ldhmentioning

confidence: 99%

Application of Mn-Fe Layered Double Hydroxide as an Adsorbent for the Removal of Arsenic from Synthetic Acid Mine Drainage

Irawan

Sari

Yulianingtias

et al. 2021

J. Rekayasa Kim. Lingkung.

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“…Coconut shell carbon already has pores, but still with a small size, while carbon shells that have been chemically activated coconut have seen the distribution of more irregular pores with a more significant number of pores. Several studies informed that activated carbon after activation of H3PO4 has a more significant pore morphology than carbon before activation, the morphology of coconut shell carbon after activation looks more expansive due to the reaction with H3PO4 (Naswir et al, 2020). This phenomenon happened because coconut shell carbon activated using H3PO4 activator can dissolve the impurities so that more pores are formed, and adsorbate trapping capability by the active carbon of coconut shell becomes more maximal than carbon before activation.…”

Section: Figure 2 Surface and Pores Characteristic Of Coconut Shell (A) And Activated Carbon (B)mentioning

confidence: 99%

“…The sorption model of BOD is similar to metals ion sorption; the BOD fill the pores of activated carbon in several times and will be decreased when the pores are entire. Another study informed that time contact effects the sorption ability (Naswir et al, 2020)…”

Section: Figure 4 Time Contact On Removal Percent Of Bodmentioning

confidence: 99%

Coconut shell-based activated carbon preparation and its adsorption efficacy in reducing BOD from The Real Wastewater from Kitchen Restaurant (RWKR): Characteristics, Sorption Capacity, and Isotherm Model

et al. 2021

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Real Wastewater from Kitchen Restaurant (RWKR) contains high concentrations of Biochemical Oxygen Demand (BOD) pollutants to pollute the environment. One of the processing alternatives to reduce BOD is the adsorption method using activated carbon from coconut shells. This study aims to determine coconut shell-activated carbon as an adsorbent for the adsorption of organic matter to reduce BOD in RWKR. The method begins with making adsorbents that are activated with activators on HCl 3 M, NaOH 3 M, and H3PO4 M, then a preliminary adsorption test is carried out to select the best activator on coconut shell activated carbon to reduce BOD in RWKR. Determining the optimum conditions for adsorption was carried out by varying pH 3, 4, 5, 6, 7, and 8. Variation of contact time with a stirring speed of 250 rpm, then determined the isotherm model. The remaining organic matter in the wastewater will be measured using a DO meter based on SNI 6989.72: 2009 concerning the method of testing for biochemical oxygen demand (BOD). The results showed that the appropriate activator for coconut shell activated carbon was H3PO4 3 M with an average percentage value of uptake of 89.690%. The adsorption process's optimum pH is at pH 3 with an absorption percentage value of 88.626%. The optimum contact time is at 10 minutes and the adsorption isotherm model used is the Freundlich isotherm with a regression value of R2 = 0.8864.

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“…Grow of the population could have an impact to degradation environments, especially water resources. Surface water pollution has been caused by industry, agriculture, domestic waste, mining, and else (Maryani and Wibowo, 2020;Naswir et al, 2020;Wibowo et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Chemical Properties and Heavy Metals from Cisadane River, Tangerang, Indonesia

2021

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This paper explained heavy metals and chemical properties from the Cisadane River in Tangerang City. A survey method was used to determine the place for sampling the test material. Water measurement is carried out in situ and laboratory tests. Data retrieval was done by purposive sampling determining three observation stations, namely in the Taman Gajah Tunggal park area (station1), Babakan Cikokol residential area (station 2), and Karawaci paper mill area (station 3). The analysis was carried out exactly using analysis. Namely, analysis carried out in the laboratory. The parameters observed were COD, phosphate, DO, BOD, pH. Results of this study informed the water quality in the Cisadane City river did not meet Class II Water Quality Standards based on Government Regulation Number 82, the year 2001. The COD content only meets class II water quality standards at stations 1 and 3. BOD and phosphate content is high and exceeds class II water quality standards. Heavy metal content still meets the water quality standard threshold with a value of Cd less than 0.01 mg/L, Cu less than 0.02 mg/L, Pb less than 0.03mg/L, and Cr less than 0.05mg/L. Zn content exceeds the water quality standard threshold at station three and meets water quality standards at stations 1 and 2 with a value of less than 0.05mg/L.

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Adsorption of Mercury Using Different Types of Activated Bentonite: A Study of Sorption, Kinetics, and Isotherm Models

Cited by 4 publications

References 15 publications

Application of Mn-Fe Layered Double Hydroxide as an Adsorbent for the Removal of Arsenic from Synthetic Acid Mine Drainage

Application of Mn-Fe Layered Double Hydroxide as an Adsorbent for the Removal of Arsenic from Synthetic Acid Mine Drainage

Coconut shell-based activated carbon preparation and its adsorption efficacy in reducing BOD from The Real Wastewater from Kitchen Restaurant (RWKR): Characteristics, Sorption Capacity, and Isotherm Model

Analysis of Chemical Properties and Heavy Metals from Cisadane River, Tangerang, Indonesia

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