scholarly journals Serbuk Dari Limbah Cangkang Telur Ayam Ras Sebagai Adsorben Terhadap Logam Timbal (Pb)

2017 ◽  
Vol 5 (3) ◽  
pp. 103
Author(s):  
Dewi Satriani ◽  
Purnama Ningsih ◽  
Ratman Ratman
Keyword(s):  
Optimum Condition ◽  
Adsorption Capacity ◽  
Time Variation ◽  
Adsorption Process ◽  
Absorption Capacity ◽  
Optimum Conditions ◽  
Optimum Time ◽  
Weight Variation ◽  
Optimum Weight ◽  
Pb Concentration

The aim of this study is to determine the optimum time and weight required for eggshell powder when it absorbs Pb, and to determine the adsorption capacity of the eggshell powder at the optimum condition for Pb with the shaking time variation of 10, 20, 30, 40 and 50 minutes. The weight variation of adsorbent is 0.25, 0.50, 0.75, 1 and 1.25 grams. The work steps in this study were production of the eggshell powder as the adsorbent, making of a solution of Pb 60 ppm, and determination the Pb concentration at equilibrium using a spectrophotometer spektrodirect respectively. The results obtained after the adsorption process for the time variation was 30 minutes, this optimum time giving %Pb absorbed was 94.65%. The weight variation of adsorbent is 1 gram, this optimum weight giving %Pb absorbed was 98.91%. Furthermore, the absorption capacity adsorbent of eggshell powder in both optimum conditions was 0.078 mg Pb/mg adsorbent.

scholarly journals Arang Eceng Gondok (Eichornia crassipes) sebagai Adsorben Fenol pada Limbah PLTU Palu

2017 ◽  
Vol 6 (2) ◽  
pp. 119
Author(s):  
Mora Delfita Tudjuka ◽  
Daud K. Walanda ◽  
Baharuddin Hamzah
Keyword(s):  
Optimum Condition ◽  
Adsorption Capacity ◽  
Water Hyacinth ◽  
Adsorption Process ◽  
Phenol Concentration ◽  
Optimum Weight ◽  
Eichornia Crassipes ◽  
Optimum Capacity

This study aims to determine the optimum capacity and weight of water hyacinth aroma to the adsorption capacity of phenol in Palu PLTU waste. The steps taken in this research are a sampling of PLTU waste, making of adsorbent, determination of phenol concentration in PLTU waste and determination of phenol concentration at equilibrium using a Spektrodirect spectrophotometer. The adsorption capacity of water hyacinth at optimum condition of phenol was determined by weight variations of 10, 20, 30, 40 and 50 mg. The resulting result after adsorption process for adsorption weight at the weight of charcoal 10 mg = 82.78%, 20 mg = 89.13%, 30 mg = 85.49%, 40 mg = 79.72% and 50 mg = 74, 42 %. The optimum weight of charcoal in phenol absorb is 20 mg with% phenol which is absorbed 89.13%. The capacity of adsorbent hailing of water hyacinth scent at optimum condition of 3.03 mg phenol/g of adsorbent.

scholarly journals Adsorpsi Logam Timbal (Pb) dari Larutannya dengan Menggunakan Adsorben dari Tongkol Jagung

2017 ◽  
Vol 5 (2) ◽  
pp. 55 ◽  
Author(s):  
Dwi Arista Ningsih ◽  
Irwan Said ◽  
Purnama Ningsih
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Activated Charcoal ◽  
Agricultural Waste ◽  
Environmental Problems ◽  
Optimum Conditions ◽  
Weight Variation ◽  
Optimum Weight

Heavy metals will cause environmental problems. One of the efforts that can minimize level of heavy metal from their solutions is to reduce heavy metals content, so that safely discarded at sea/river. One such way to reduce level of heavy metals is by adsorption. Some agricultural waste are potential as an adsorbent, namely a corncob. Therefore, the aim of this study is to determine the optimum weight of adsorben from corncob to absorb Pb(II) from its solution. In this study, the corncob was used as an adsorbent to adsorb Pb(II) by using three methods, namely powder, charcoal and activated charcoal with a solution of HCl. The parameters tested were amount of adsorbent or weight of the powder, charcoal and activated charcoal by the weight variation of 20, 40, 60, 80 and 120 mg to determine the optimum conditions in adsorbing Pb(II). The optimum conditions are obtained for the powder was 80 mg with the absorption of 96.92%, the charcoal is 80 mg with absorption of 97.29%, and the activated charcoal was 40 mg with the absorption of 94.70%.

scholarly journals PEMANFAATAN ARANG AKTIF SABUT KELAPA SAWIT SEBAGAI ADSOBEN ZAT WARNA SINTETIS REACTIVE RED-120 DAN DIRECT GREEN -26

Alotrop ◽  
2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Melfi Puspita ◽  
M. Lutfi Firdaus ◽  
Nurhamidah Nurhamidah
Keyword(s):  
Adsorption Capacity ◽  
Adsorption Isotherms ◽  
Activated Charcoal ◽  
Contact Time ◽  
Adsorption Process ◽  
Maximum Adsorption Capacity ◽  
Analysis Method ◽  
Optimum Conditions ◽  
Coconut Fiber ◽  
Reactive Red 120

The problem of environmental polution caused by waste of batik industry lately is increasing, so it needed a method to overcome that problem. The aim of this study was to determine the ability of activated charcoal from coconut fiber palm in adsorbing Reactive Red-120 and Direct Green-26 dyes in waste of batik along with determining the parameters of isotherms adsorption using UV-Vis Spectrophotometer analysis method. Variations of pH, contact time, adsorbent weight and temperature were carried out as variable to obtain optimum conditions of the adsorption process. The optimum of conditions for Reactive Red-120  occured at pH 3 and a contact time of 30 minutes, while Direct Green-26  occurred at pH 4 and a contact time of 40 minutes, with each adsorbent weight 150 mg and the temperature 30 °C. Adsorption isotherms determined by Freundlich and Langmuir models with maximum adsorption capacity (Qmax) were obtained for the Reactive Red-120  was 400 mg/g, while Direct Green-26 is 169 mg/g. 

Use of Bioballs as an Adsorbent for the Removal of Copper

2021 ◽  
Vol 43 (2) ◽  
pp. 114-114
Author(s):  
Hakan elebi Hakan elebi
Keyword(s):  
Heavy Metals ◽  
Adsorption Capacity ◽  
Adsorption Process ◽  
Batch Process ◽  
Practical Method ◽  
High Density ◽  
Maximum Adsorption Capacity ◽  
Optimum Conditions ◽  
Fixed Amount ◽  
High Level

Nowadays, heavy metals, which are among the various hazardous pollutants, are present at a high level of density in the receiving environments. Among heavy metals, especially copper is mainly present in wastewater due to the industrial activities. Adsorption is the most practical method to prevent this pollution, and in recent years, researchers have been involved in researching both adsorption and cost-efficient, accessible, easy-to-apply environmentally friendly adsorbents. In this study, the adsorption capacity of high density bioballs having a potential adsorbent characteristic was investigated. Accordingly, different pH values (2.0 – 6.0) and the contact times (1 -150 minutes) of a solution on the adsorption process was evaluated under a constant agitating speed (150 rpm), a constant temperature (25and#176;C) and a fixed amount of adsorbent (2.0 g). Experimental data on the pH and contact times obtained were evaluated using different isotherm and kinetic models in a batch process. The optimum conditions for the adsorption process were determined as follows: adsorbent dose = 2 g/L, pH = 6.23 and contact time = 45 minute. The maximum copper refining efficiency of a high density bioball was calculated to be approximately 78% under the optimum conditions determined. The maximum adsorption capacity based on the Langmuir isotherm is 5.60 mg/g, and the adsorption of the copper element onto the high-density bioball is defined by a pseudo-second-order kinetics. The process was found to be applicable, spontaneous, and endothermic according to thermodynamic parameters. As a result, it has been noted that high density bioballs used as a biofilm material may be an alternative adsorbent for copper and the other heavy metals.

scholarly journals Utilization of Natural Zeolite from Ponorogo and Purworejo for Naphthol Substance Adsorption

2018 ◽  
Vol 31 ◽  
pp. 05002
Author(s):  
Sundus Imandiani ◽  
Christine Indira ◽  
Anthony Johan ◽  
Budiyono
Keyword(s):  
Hydrochloric Acid ◽  
Adsorption Capacity ◽  
Natural Zeolite ◽  
Adsorption Process ◽  
Test Results ◽  
Natural Zeolites ◽  
Optimum Conditions ◽  
Hcl Concentration

Indonesia has many zeolite producing areas yet untapped. Researchers developed the utilization of natural zeolites useful for the adsorption of naphthol dyes commonly found in batik waste. In this study researchers used natural zeolites from Purworejo and Ponorogo that are activated using hydrochloric acid that is used for adsorption. The purpose of this research is to know the effect of natural zeolite activation from Ponorogo and Purworejo on the effectiveness of adsorption of naphthol dyes widely used in batik industry. Natural zeolite was activated using HCl concentration of 1.3N; 1.8N; 3.2N; and 3.9N for 60 minutes. The methods are preparation of natural zeolite from Purworejo and Ponorogo, dealumination using hydrochloric acid, adsorption process of naphthol dyes using activated zeolite, and test of adsorption result with uv-vis spectrophotometry. The test results showed that the higher HCl concentration will increase adsorption capacity. This can be known from the concentration of naphthol dye which decreased both using natural zeolite Ponorogo and Purworejo. While the effectiveness of adsorption shows natural zeolite Purworejo has a greater adsorption capacity than Ponorogo with optimum conditions of dealumination using concentration HCl 3,9N.

scholarly journals Kondisi Optimum Adsorpsi Arang Hayati dari Kulit Pisang Raja (Musa X paradisiaca L.) terhadap Logam Timbal (Pb) dan Tembaga (Cu)

2018 ◽  
Vol 7 (2) ◽  
pp. 55
Author(s):  
Iren S. A. Tanggebono ◽  
Vanny M. A. Tiwow ◽  
Minarni Rama Jura
Keyword(s):  
Optimum Condition ◽  
Copper Ions ◽  
Copper Ion ◽  
Lead Ion ◽  
Banana Peel ◽  
Optimum Time ◽  
Optimum Weight ◽  
The Village ◽  
Central Sulawesi

This study aimed to determine the optimum condition of biocharcoal from banana peel on adsorption of lead (Pb) and copper (Cu) metals based on the variation of weights and biocharcoal contact times. Banana peel used in this research were taken from Sidondo III the village, Sigi, Central Sulawesi. To determine absorbed metals in biocharcoal banana peel was measured by a spectrophotometer spectroDirect. The results showed that the optimum weight of adsorption lead (Pb) ion was 80 mg and copper (Cu) ion was 40 mg with each percentage adsorption of 73.91% and 21.23%, respectively. The optimum time to adsorb lead and copper ions was 90 minutes with the percentage adsorption of 89.13% for lead ion and 25.86% for copper ion.

scholarly journals Pemanfaatan Arang Aktif Biji Kapuk (Ceiba Pentandra L.) sebagai Adsorben Logam Timbal (Pb)

2017 ◽  
Vol 5 (4) ◽  
pp. 191
Author(s):  
Sri Wahyuni ◽  
Purnama Ningsih ◽  
Ratman Ratman
Keyword(s):  
Heavy Metal ◽  
Optimum Condition ◽  
Activated Charcoal ◽  
Contact Time ◽  
Adsorption Method ◽  
Parameter Variations ◽  
Optimum Weight ◽  
Cotton Seeds ◽  
Two Parameter ◽  
Pb Concentration

Lead is a heavy metal that has been a problem particulary in the aquatic environment. This reseach is an effort to reduce these problems by using adsorption method that utilizes an adsorbent of cotton seeds to Pb. Cotton seeds were chemically activated trough the process using a solution of 85% H3PO4. This study aims to determine the optimum weight of activated charcoal an adsoption capacity in optimum condition by using two parameter variations of weight of 0,3; 0,6; 0,9; 1,2 and 1,5 grams and Pb concentration of 10, 20, 30, 40 and 50 ppm by using a contact time of 30 minutes. Pb concentration was measured using a spectrophotometer spectro-direct. The result obtained that optimum weight of active charcoal cotton seeds was 1,2 grams with a percentage of 97,76% uptake an adsorption capacity in optimum condition Pb was 0,05 mg/mg activated charcoal.

scholarly journals A COMPARISON BETWEEN BIOSORPTION AND BIOACCUMULATION OF FLUORIDE FROM WASTE WATER.

2018 ◽  
Vol 11 (3) ◽  
pp. 92
Author(s):  
Tej Pratap Singh ◽  
Majumder Cb
Keyword(s):  
Waste Water ◽  
Acinetobacter Baumannii ◽  
Removal Efficiency ◽  
Active Sites ◽  
Adsorption Process ◽  
Optimum Conditions ◽  
Optimum Time ◽  
Lemon Peel ◽  
Kinetic Result ◽  
Drastic Increase

 Objective: The comparison between the properties of two removal methods viz. adsorptive removal (biosorption) and simultaneous adsorption and bioaccumulation (SAB) of fluoride from waste water was investigated.Methods: In the present study, bioaccumulation study was done on Sweet Lemon peel. Acinetobacter baumannii (Mtcc no-11451) is a water living microorganism which survives in waste water. Microorganism (Acinetobacter baumannii (Mtcc no-11451)) immobilized on the surface of Sweet Lemon peel. The size of microorganism is greater than the pore size of adsorbent. Active sites of the adsorbent are blocked due to immobilization of microorganism on the surface of adsorbent. Different optimizing parameters are studied during the experiments like adsorbent dose, pH, initial concentration and contact time for bio bioaccumulation process.Results: It was observed that adsorption and bioaccumulation process execute simultaneously but mainly bioaccumulation is responsible for removal of fluoride. The removal efficiency of fluoride sees a drastic increase from 59.59 % to 99.49 % in optimum conditions. It is to be noted that simple adsorption process removal efficiency was 95.795 % at optimum time (60 min), pH 4.0 and dose 10 g/l. Adsorption isotherm parameters are well fitted for Freundlich whereas simple adsorption follow Langmuir isotherm model.Conclusion: The removal of fluoride occurred due to the accumulation by bacteria. Kinetic result revealed that bioaccumulation is a slower process. Bioaccumulation process increase the removal efficiency but it is very time consuming and costly as compare to the simple adsorption process.

scholarly journals Adsorben Magnetit Terlapis Dimerkaptosilika untuk Adsorpsi Anion Logam [AuCl4]- dan [Cr2O7]-

2020 ◽  
Vol 11 (2) ◽  
pp. 113-120
Author(s):  
Ngatijo Ngatijo ◽  
Diah Riski Gusti ◽  
Abdurrazaq Habib Fadhilah ◽  
Resilta Khairunnisah
Keyword(s):  
Adsorption Capacity ◽  
Contact Time ◽  
Adsorption Process ◽  
Adsorption Efficiency ◽  
Optimum Conditions ◽  
Metal Anion ◽  
Metal Anions

Adsorbent magnetite-dimercapto-silica (Fe3O4 - DMS) is a synthesis of magnetite with 2,3-dimercapto-1-propanol which has been applied to adsorb anions [AuCl4] - and [Cr2O7]-2. The adsorption process of metal anion [AuCl4]- at pH 5 with a contact time of 100 minutes was found optimum results at an adsorption capacity of 77.58 mg/g and an adsorption efficiency value of 96.975%. While the optimum conditions of metal anion [Cr2O7]-2 after the adsorption process at pH 4 with a contact time of 90 minutes was found an adsorption capacity of 85.0426 mg/g and an adsorption efficiency value of 85.0426%. The adsorption efficiency of metal anions [AuCl4]- is higher than the adsorption efficiency of metal anions [Cr2O7] -2 

scholarly journals Performance of Egg Shell Biosorbent as Cr Heavy Metal Extractor in Industrial Liquid Waste

Jurnal IPTEK ◽  
2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Syahril Makosim ◽  
Mohamad Haifan ◽  
Eka Indra Setiaman
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Treatment Time ◽  
Negative Impact ◽  
Liquid Waste ◽  
Freundlich Isotherm ◽  
Absorption Capacity ◽  
Optimum Conditions ◽  
Optimum Time ◽  
Egg Shell

In industrial processing, side products are produced in the form of liquid waste containing heavy metals, including Cr (III) which can have a negative impact on the environment. Some egg shell characteristics containing  high concentrations of CaCO3 and have a natural pore structure can be used as adsorbers (biosorbents) of heavy metals produced by the processing industry. The purpose of this study was to obtain the optimum conditions of absorption (adsorption) of Cr (III) metals carried out by egg shell biosorbents. The research method was carried out experimentally which included the preparation of egg shell waste biosorbents, determining the optimum time, as much as 1.0 gram of eggshell biorsorbent was put into 25 ml of heavy metal waste solution with a concentration of 50 ppm, then adsorption was carried out with time variations of 5, 10, 20 , 30, 40, 50, 60 and 120 minutes. Variation of  Cr concentration  were 50,0 ppm; 100,0 ppm,  150,0 ppm; 200,0 ppm; 250,0 ppm; 300,0 ppm; 350,0 ppm, 400,0 ppm; 450,0 ppm; 500,0 ppm; dan 1000 ppm. After that the mixture is filtered and the filtrate is read on the Atomic Absorption Spectrophotometer (AAS) to find out the maximum adsorption. The results showed the optimum conditions of adsorption of Cr (III) metals obtained an optimum time of 40 minutes with an absorption capacity of 1242.46 µg Cr (III) / g biosorbent, and optimum concentration with optimum treatment time and weight at 200 ppm with an absorption capacity of 4984 , 99 µg Cr (III)/g biosorbent. The adsorption isotherm adopts the Freundlich isotherm or physically (physical) type, because the linearity of the Freundlich isotherm obtained from the calculation results is R2 = 0.7312 or 73.12% higher than the Langmuir isotherm ie R2 = 0.0335 or 3.35%.  Keyword : Cr (III) heavy metal, eggshell biosorbent, optimum adsorption conditions

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