scholarly journals Electrochemical Removal of Copper Ion Using Coconut Shell Activated Carbon

2020 ◽  
Vol 20 (3) ◽  
pp. 530
Author(s):  
Nur Azza Azyan Muin ◽  
Hawaiah Imam Maarof ◽  
Nur Alwani Ali Bashah ◽  
Nor Aida Zubir ◽  
Rasyidah Alrozi ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Removal Efficiency ◽  
Applied Voltage ◽  
Treatment Time ◽  
Copper Ion ◽  
Electrochemical Process ◽  
Coconut Shell ◽  
Initial Concentration ◽  
Initial Ph ◽  
Coconut Shell Activated Carbon

In this work, coconut shell activated carbon (CSAC) electrode was evaluated to remove copper ion via electrochemical processes. CSAC electrode and graphite were applied as the cathode and the anode, respectively. The reusability of the electrode, the effects of initial pH, applied voltage and initial concentration were studied. The electrochemical process was carried out for 3 h of treatment time, and the electrodes (anode and cathode) were separated by 1 cm. The results revealed that CSAC is proven as a reusable electrode to remove copper ion, up to 99% of removal efficiency from an initial concentration of 50 ppm after it had been used three times. From the observation, the removal efficiency was optimum at an initial pH of 4.33 (without any initial pH adjustment). The applied voltage at 8 V showed a higher removal efficiency of copper ion compared to at 5 V.

scholarly journals Removal of Cadmium from Industrial Wastewater using Electrocoagulation Process

2019 ◽  
Vol 26 (1) ◽  
pp. 24-34 ◽  
Author(s):  
Mohammed Alameen Salem ◽  
Najwa Majeed
Keyword(s):  
Heavy Metal ◽  
Removal Efficiency ◽  
Applied Voltage ◽  
Industrial Wastewater ◽  
Batch Reactor ◽  
Operating Parameters ◽  
Initial Concentration ◽  
Initial Ph ◽  
Electrocoagulation Process ◽  
Aluminum Electrodes

Cadmium is one of the heavy metal found in the wastewater of many industries. The electrocoagulation offers many advantages for the removal of cadmium over other methods. So the removal of cadmium from wastewater by using electrocoagulation was studied to investigate the effect of operating parameters on the removal efficiency. The studied parameters were the initial pH, initial concentration, and applied voltage. The study experiments were conducted in a batch reactor with  with two pairs of aluminum electrodes with dimension  and 2mm in thick with 1.5 cm space between them. The optimum removal was obtained at pH =7, initial concentration = 50 mg/L, and applied voltage = 20 V and it was 90%.

Removal of Colour from Waste Water Using Coconut Shell Activated Carbon (CSAC) and Commercial Activated Carbon (CAC)

2013 ◽  
Vol 60 (1) ◽  
Author(s):  
Mohammed Jibril ◽  
Jaafar Noraini ◽  
Lai Shiou Poh ◽  
Abdullahi Mohammed Evuti
Keyword(s):  
Waste Water ◽  
Activated Carbon ◽  
Removal Efficiency ◽  
Color Removal ◽  
Coconut Shell ◽  
Isotherm Models ◽  
Batch Adsorption ◽  
Colour Removal ◽  
Initial Color ◽  
Coconut Shell Activated Carbon

Dalam kajian ini, satu siri eksperimen penjerapan berkelompok telah dijalankan untuk menyiasat kecekapan penyingkiran warna oleh CSAC dan CACs daripada air sisa. Kecekapan penjerapan telah dinilai dengan mengukur peratus penyingkiran warna. Kesan larutan pH, kepekatan adsorben, masa betindak balas dan kepekatan warna asal terhadap kecekapan penyingkiran warna juga telah disiasat. Penjerapan warna optimum dicapai pada pH rendah (pH 1.68), kepekatan warna asal yang rendah (50mg/l) dan 12g/l dos karbon dengan kecekapan penyingkiran sebanyak 75% untuk CAC dan 45% bagi CSAC, dengan pergolakan selama satu jam. Kecekapan penyingkiran warna yang rendah iaitu 25% untuk CAC dan 17% untuk CSAC telah diperoleh pada pH tinggi (ph 9-12), kepekatan warna asal yang tinggi iaitu 100mg/l dan dos karbon yang rendah untuk tempoh penahanan yang sama. Perbandingan antara model isotherm Langmuir dan Freundlich ke atas data penjerapan menunjukkan bahawa model isotermal Langmuir menunjukkan keputusan yang lebih baik dengan pekali korelasi, R2 yang lebih tinggi. Keputusan menunjukkan bahawa CSAC boleh digunakan sebagai alternatif kos rendah untuk CAC untuk menyingkirkan pewarna daripada air sisa tetapi kecekapannya penyingkirannya adalah lebih rendah berbanding CAC. Kata kunci: Warna pengeluaran; air sisa; arang batu; kelapa shell; karbon teraktif; Adsorpsi sesuhu In this study, series of batch adsorption experiment were conducted to examine the color removal efficiency of CSAC and CACs from waste water. The CAC is coal base activated carbon while the CSAC was manufactured in the laboratory. Yellow dye colour (Tartrazine E102) was utilized as the colourant. The adsorption efficiencies of the adsorbents were evaluated and compared by measuring the percentage of color removed. The effects of solution pH, adsorbent concentration, contact time as well as initial color concentration on the colour removal efficiency were also investigated. The optimum adsorption of color was achieved at low pH (pH 1.68), low initial color concentration (50mg/L) and 12g/l carbon dosage with removal efficiency of 75% for CAC and 45% for CSAC, with one hour agitation. Lower colour removal efficiency of 25% for CAC and 17% for CSAC were obtained at higher pH (pH 9-12), higher initial color concentration (100mg/L) and low carbon dosage, under the same retention time. A comparison of the Langmuir and Freundlich isotherm models of the adsorption data shows that Langmuir isotherm shows higher correlation coefficient, R2. The results indicate that CSAC has the potential as a low cost alternative for colour removal but the efficiency is lower than CSAC. Keywords: Color removal; waste water; coal; coconut shell; activated carbon; adsorption isotherm

The Synergistic Character of Highly N‐Doped Coconut–Shell Activated Carbon for Efficient CO 2 Capture

2021 ◽  
Vol 6 (34) ◽  
pp. 9149-9156
Author(s):  
Navvamani Rajasekaran ◽  
Mari Vinoba ◽  
Hanadi Al‐Sheeha ◽  
Mohan S. Rana
Keyword(s):  
Activated Carbon ◽  
Coconut Shell ◽  
Coconut Shell Activated Carbon

Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples

2019 ◽  
Vol 230 (12) ◽  
Author(s):  
Ksenija Kumrić ◽  
Radojka Vujasin ◽  
Marija Egerić ◽  
Đorđe Petrović ◽  
Aleksandar Devečerski ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Solid Phase Extraction ◽  
Water Samples ◽  
Solid Phase ◽  
Coconut Shell ◽  
Phase Extraction ◽  
Coconut Shell Activated Carbon ◽  
As Solid Phase

Preparations and Characterization on Fe Based Catalyst Supported on Coconut Shell Activated Carbon CS(AC) and SCR of NOx-HC

2020 ◽  
Vol 24 (2) ◽  
pp. 123-133
Author(s):  
Adeel Halepoto ◽  
Muhammad Kashif ◽  
Yaxin Su ◽  
Jianghao Cheng ◽  
Wenyi Deng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Coconut Shell ◽  
Coconut Shell Activated Carbon ◽  
Scr Of Nox

Study on the Alage Removal by Microwave Irradiation

2010 ◽  
Vol 113-116 ◽  
pp. 87-90
Author(s):  
Qing Jie Xie
Keyword(s):  
Activated Carbon ◽  
Microwave Irradiation ◽  
Removal Efficiency ◽  
Oxidation Process ◽  
Removal Rate ◽  
Treatment Efficiency ◽  
Dynamic Reaction ◽  
Initial Concentration ◽  
First Order ◽  
Pollutants Removal

The microwave irradiation (MI) was found that it had significantly treatment efficiency for pollutants removal. It was developed to treat the alage in this paper. The granular activated carbon (GAC) was used as catalyst. The effect of the acting time, MI power, GAC amount and the initial concentration on alage removal were studied. The results showed: with the increasing of the acting time, MI power, GAC amount the alage removal rate were increased, but the effect of the initial concentration to alage removal was opposite; the optimum value of acting time, MI power and GAC amount were 5min, 450W and 3g respectively with the alage removal efficiency reached up to 100%. It also showed that with the alage removed under the MI the COD, SS were removed too. It was discovered that the oxidation process was basically in conformity with the first-order dynamic reaction(ln(C/C0)＝-0.9371t+0.6744（R2=0.9472）).

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