scholarly journals ACTIVATED RED MUD (ARM) IS USED FOR COLOR REMOVAL AS AN ADSORBENT FROM WASTE WATER

2016 ◽  
Author(s):  
Sanjay L Pal Sanjay L Pal ◽  
Keyword(s):  
Waste Water ◽  
Red Mud ◽  
Color Removal

Removal of Hazardous Indigo Carmine Dye from Waste Water Using Treated Red Mud

2019 ◽  
Vol 17 ◽  
pp. 198-208 ◽  
Author(s):  
A.Naga Babu ◽  
D.Srinivasa Reddy ◽  
Pranay Sharma ◽  
G.Suresh Kumar ◽  
K. Ravindhranath ◽  
...  
Keyword(s):  
Waste Water ◽  
Red Mud ◽  
Indigo Carmine ◽  
Indigo Carmine Dye

Experimental Research of Decoloring Treatment on Vitamin B12 Wastewater

2013 ◽  
Vol 295-298 ◽  
pp. 1209-1214 ◽  
Author(s):  
Si Hang Shan ◽  
Peng Fei Fan ◽  
Yi Xing ◽  
Geng Qiao
Keyword(s):  
Waste Water ◽  
Vitamin B12 ◽  
Experimental Research ◽  
Removal Rate ◽  
Color Removal ◽  
The Other ◽  
Vitamin B ◽  
Reaction Conditions ◽  
Pharmaceutical Factory

Two kinds of vitamin B12 waste water from a pharmaceutical factory were treated separately by methods of combining micro-electrolysis with physiochemical and O3 oxidation. Effects of the reaction conditions on the removal rate of color were investigated. Results showed that the color removal rate of vitamin B12 waste water, which was treated by combined micro-electrolysis and physiochemical treatment reached 71.25%, while the color removal rate of the other waste water which treated by O3 oxidation reached 68.80%. The decolorizing treatment of those different natures of vitamin B12 waste water effectively provides a useful reference for this kind of waste water.

Removal of Arsenic by Red Mud from Contaminated Waste Water

2013 ◽  
pp. 1951-1957 ◽  
Author(s):  
Linda C. White ◽  
Eric Paling ◽  
Pritam Singh ◽  
Wensheng Zhang
Keyword(s):  
Waste Water ◽  
Red Mud ◽  
Contaminated Waste ◽  
Removal Of Arsenic

scholarly journals 3,5-Dichlorophenol Removal From Wastewater Using Alternative Adsorbents

2015 ◽  
Vol 23 (36) ◽  
pp. 25-32
Author(s):  
Hana Kobetičová ◽  
Marek Lipovský ◽  
Igor Wachter ◽  
Maroš Soldán
Keyword(s):  
Waste Water ◽  
Removal Efficiency ◽  
Red Mud ◽  
Contact Time ◽  
Lemna Minor ◽  
Low Cost ◽  
Initial Concentration ◽  
Black Nickel ◽  
Alternative Adsorbents

Abstract The main objective of this paper is to evaluate the efficiency of 3,5-dichlorophenol removal from wastewater by using alternative low cost adsorbents. Waste from the production and processing of metals (black nickel mud, red mud) and a biosorbent (Lemna minor) were used for this research. Initial concentration of the contaminant was 4 mmol L−1, the contact time of sorbent and waste water was 0 - 48 hrs and the temperature during experiment was 25 ± 0.2 °C. The results show that the highest removal efficiency of 3,5 - dichlorophenol (58.18 %) was reached by the red mud in 48 hours.

scholarly journals Treatment of textile industry wastewater by electrocoagulation technology

2021 ◽  
Vol 896 (1) ◽  
pp. 012078
Author(s):  
A Rezagama ◽  
D S Handayani ◽  
B A Rahardjo ◽  
S Ashifa ◽  
M Y Wafa
Keyword(s):  
Waste Water ◽  
Heavy Metal ◽  
Textile Industry ◽  
Color Removal ◽  
Synthetic Sample ◽  
Electric Voltage ◽  
Textile Waste ◽  
Metal Pollutants ◽  
Heavy Metal Pollutants ◽  
Industry Wastewater

Abstract Experiments were carried out by treating the waste samples with electrocoagulation technology. This is done to determine the effectiveness of the removal of the electrocoagulation device against textile waste. The sample used is a synthetic sample with a concentration of 1091 mg/L Pt-Co units. The research was conducted twice with the first experiment being conducted to determine the most effective electrical voltage to remove the existing COD and color pollutants while the second experiment was conducted to determine the type of anode and cathode that was most effective in removing COD, Color, and heavy metal pollutants. In the first experiment, it was found that the electric voltage that could produce the best removal was 4 amperes and in the second experiment, the anode-cathode type with the highest % removal was Fe-Fe with % COD removal of 64.09639% and % color removal of 60.00619%. It was concluded that electrocoagulation method could effectively remove color and COD in waste water.

scholarly journals A novel textile wastewater treatment using ligninolytic co-culture and photocatalysis with TiO2

2018 ◽  
Vol 23 (3) ◽  
pp. 437-464 ◽  
Author(s):  
Andrea Blanco-Vargas ◽  
Christian Fernando Ramírez-Sierra ◽  
Marcela Duarte Castañeda ◽  
Milena Beltrán-Villarraga ◽  
Luz Karime Medina-Córdoba ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Dye Adsorption ◽  
Color Removal ◽  
Sequential Treatment ◽  
Toxicity Tests ◽  
Secondary Treatment ◽  
Tertiary Treatment ◽  
Effluent Waste

Textile industries produce effluent waste water that, if discharged, exerts a negative impact on the environment. Thus, it is necessary to design and implement novel waste water treatment solutions. A sequential treatment consisting of ligninolytic co-culture with the fungi Pleurotus ostreatus and Phanerochaete crhysosporium (secondary treatment) coupled to TiO2/UV photocatalysis (tertiary treatment) was evaluated in the laboratory in order to discolor, detoxify, and reuse textile effluent waste water in subsequent textile dyeing cycles. After 48 h of secondary treatment, upto 80 % of the color in the waste water was removed and its chemical and biochemical oxygen demands (COD, and BOD5) were abated in 92 % and 76 %, respectively. Laccase and MnP activities were central to color removal and COD and BOD5 abatement, exhibiting activity values of 410 U.L-1 and 1 428 U.L-1, respectively. Subjecting waste water samples to 12h of tertiary treatment led to an 86 % color removal and 73 % and 86 % COD and BOD5 abatement, respectively. The application of  a sequential treatment for 18 h improved the effectiveness of the waste water treatment, resultingin 89 % of color removal, along with 81 % and 89 % COD and BOD5 abatement, respectively. With this sequential treatment a bacterial inactivation of 55 % was observed. TiO2 films were reused continuously during two consecutive treatment cycles without thermic reactivation. Removal percentages greater than 50 % were attained. Acute toxicity tests performed with untreated waste water led to a lethality level of 100 % at 50 % in Hydra attenuata and to a growth inhibition of 54 % at 50 % in Lactuca sativa. Whereas sequentially treated waste water excreted a 13 % lethality at 6.25 % and aninhibition of 12 % at 75 % for H. attenuata and L. sativa, respectively. Finally, sequentially treated waste water was reused on dyeing experiments in which 0.86 mg.g-1 adsorbed dye per g of fabric, that is equivalent to 80 % of dye adsorption.

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

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