Optimization and evaluation of the indigo blue vat dye removal process on rice husk through statistical design

2018 ◽  
Vol 109 ◽  
pp. 253-260
Author(s):  
Fredy Amaringo ◽  
Angelina Hormaza
Keyword(s):  
Rice Husk ◽  
Dye Removal ◽  
Statistical Design ◽  
Removal Process ◽  
Vat Dye ◽  
Indigo Blue

scholarly journals Improved Dye Removal Ability of Modified Rice Husk with Effluent from Alkaline Scouring Based on the Circular Economy Concept

Processes ◽  
2020 ◽  
Vol 8 (6) ◽  
pp. 653 ◽  
Author(s):  
Nina Mladenovic ◽  
Petre Makreski ◽  
Anita Tarbuk ◽  
Katia Grgic ◽  
Blazo Boev ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Rice Husk ◽  
Circular Economy ◽  
Energy Efficient ◽  
Dye Removal ◽  
Plant Fibers ◽  
Environment Friendly ◽  
Pre Treatment ◽  
Colored Wastewater ◽  
Red Dye

To improve the ability of the rice husk to purify colored wastewater, effluent from the alkaline scouring of cotton yarn was used immediately after the scouring (without cooling and additionally added chemicals) in order to remove the non-cellulosic silicon-lignin shield from the rice husk’s surface. This rice husk, with 93.8 mg/g adsorption capacity, behaves similarly as the rice husk treated with an optimized alkaline scouring recipe consisting of 20 g/L NaOH, 2 mL/L Cotoblanc HTD-N and 1 mL/L Kemonecer NI at 70 °C for 30 min with an adsorption capacity of 88.9 mg/g of direct Congo red dye. Treating one form of waste (rice husk) with another (effluent from the alkaline scouring of cellulosic plant fibers), in an effort to produce a material able to purify colored effluent, is an elegant environment-friendly concept based on the circular economy strategy. This will result in a closed-loop energy-efficient process of the pre-treatment of cotton (alkaline scouring), modification of rice husk using effluent from the alkaline scouring, dyeing cotton fabrics and cleaning its colored effluents with modified rice husk without adding chemicals and energy for heating.

Preparation of a novel polysulfone membrane by incorporated with carbon dots grafted silica from rice husk for dye removal

2020 ◽  
pp. 101805
Author(s):  
Zeng Wei Heng ◽  
Yee Yen Tan ◽  
Woon Chan Chong ◽  
Ebrahim Mahmoudi ◽  
Abdul Wahab Mohammad ◽  
...  
Keyword(s):  
Rice Husk ◽  
Carbon Dots ◽  
Dye Removal ◽  
Polysulfone Membrane

Removal of dyes from aqueous solutions using activated carbon prepared from rice husk residue

2015 ◽  
Vol 73 (5) ◽  
pp. 1122-1128 ◽  
Author(s):  
Yaxin Li ◽  
Xian Zhang ◽  
Ruiguang Yang ◽  
Guiying Li ◽  
Changwei Hu
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Rice Husk ◽  
Dye Removal ◽  
Neutral Red ◽  
Batch Adsorption ◽  
Dye Wastewater ◽  
Dye Molecules ◽  
Major Mode ◽  
Pseudo Second Order

The treatment of dye wastewater by activated carbon (AC) prepared from rice husk residue wastes was studied. Batch adsorption studies were conducted to investigate the effects of contact time, initial concentration (50–450 mg/L), pH (3–11) and temperature (30–70 °C) on the removal of methylene blue (MB), neutral red, and methyl orange. Kinetic investigation revealed that the adsorption of dyes followed pseudo-second-order kinetics. The results suggested that AC was effective to remove dyes, especially MB, from aqueous solutions. Desorption studies found that chemisorption by the adsorbent might be the major mode of dye removal. Fourier transform infrared results suggested that dye molecules were likely to combine with the O–H and P=OOH groups of AC.

Adsorption of Reactive Dye (RB 222) in Solution onto Chitosan-Rice Husk Ash Composite Beads Cross-Linked with Glutaraldehyde

2017 ◽  
Vol 751 ◽  
pp. 719-725 ◽  
Author(s):  
Ratana Sananmuang ◽  
Wipharat Chuachuad Chaiyasith ◽  
Kalayaporn Paroon
Keyword(s):  
Rice Husk ◽  
Dye Removal ◽  
Adsorption Process ◽  
Rice Husk Ash ◽  
Freundlich Isotherm ◽  
Reactive Dye ◽  
Bet Surface Area ◽  
Isotherm Study ◽  
Composite Beads ◽  
C 30

The adsorption of reactive dye (RB 222) onto cross-linked chitosan-rice husk ash composite beads was investigated. BET, SEM and FTIR methodologies were used to characterize the properties of the composite beads. The results indicated that the BET surface area values of cross-linked chitosan-rice husk ash composite beads were 4 .740 m2 /g . The effects of various parameters on the adsorption behavior of composite beads including pH (2-12), temperature (20°C, 30°C and 40°C), and initial concentration (10-850 mg/L) were studied. The dye concentrations after adsorption process were measured using a UV/VIS Spectrophotometer at 611 nm. For the effect of pH on reactive dye (RB 222) removal, the highest value of dye removal was obtained at pH 2. The isotherm study was fitted by Freundlich Isotherm. Moreover, thermodynamics of adsorption was also found that the △Go had negative values. It indicates the feasibility of adsorption process at temperature below 40°C.

Preparation and Methylene Blue Adsorption Characteristics of Highly Mesoporous Rice Husk Active Carbon Prepared by an Alkali-Saving and Equipment-Friendly Method

2013 ◽  
Vol 448-453 ◽  
pp. 182-187 ◽  
Author(s):  
Da Wei Li ◽  
Xi Feng Zhu
Keyword(s):  
Methylene Blue ◽  
Removal Efficiency ◽  
Rice Husk ◽  
Active Carbon ◽  
Dye Removal ◽  
Order Kinetic ◽  
Mesopore Volume ◽  
Order Kinetic Model ◽  
Naoh Solution ◽  
Pseudo Second Order

Highly mesoporous active carbon for removing methylene blue (MB) from aqueous solution was prepared from pyrolyzed rice husk by combination of CO2activation and NaOH-solution boiling. The preparation method was found to be alkali-saving and equipment-friendly. The prepared active carbon exhibited high mesoporosity (79.1%), with mesopore volume and specific surface area up to 0.619 mL/g and 899 m2/g, respectively. At initial MB concentrations of 240-380 mg/L, the MB removal efficiency of the prepared active carbon ranged from 92% to more than 99%, fairly comparable to that of the highly mesoporous commercial active carbon used for reference. The adsorption of MB onto the prepared active carbon well followed the pseudo second-order kinetic model and Langmuir isotherm. This study indicated that highly mesoporous active carbon with large dye removal efficiency could be prepared from rice husk by an alkali-saving and equipment-friendly process.

scholarly journals Rice husk as a potentially low-cost biosorbent for heavy metal and dye removal: an overview

Desalination ◽  
2005 ◽  
Vol 175 (3) ◽  
pp. 305-316 ◽  
Author(s):  
T.G. Chuah ◽  
A. Jumasiah ◽  
I. Azni ◽  
S. Katayon ◽  
S.Y. Thomas Choong
Keyword(s):  
Heavy Metal ◽  
Rice Husk ◽  
Dye Removal ◽  
Low Cost
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