Adsorption isotherms and kinetic modeling of methylene blue dye onto a carbonaceous hydrochar adsorbent derived from coffee husk waste

Tran, Thi Hien; Le, Anh Hoang; Pham, Thien Huu; Nguyen, Dinh Thanh; Chang, Soon Woong; Chung, Woo Jin; Nguyen, Dinh Duc

doi:10.1016/j.scitotenv.2020.138325

Cited by 222 publications

(77 citation statements)

References 66 publications

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“…Hundreds of agricultural-based waste by-products such as corn cob, barley straw [7], carrot waste [8], alder sawdust [9], rice husks, olive pomace, orange waste [10], Kiwicucumber-potato peel [11], sago waste [12], coffee husk [13], peanut shells [14], rice husk waste, coconut shell [15], hazelnut husk [16], and tea-industry waste [17] are used either directly or by converting into activated carbons to remove various pollutants from aqueous medium. In this way, very low cost and high-performance adsorbents can be obtained from these by-products with no economic value.…”

Section: Materials and Methods Chemicals Solutions And Matter-materials Usedmentioning

confidence: 99%

Adsorption Of Methylene Blue from Aqueous Solution with Sulfuric Acid Activated Corn Cobs: Equilibrium, Kinetics, and Thermodynamics Assessment

Bozbeyoglu

Duran

Baltacı

et al. 2020

Hittite J. Sci. Eng.

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N atural waters are getting more and more polluted due to the activities of many industry organizations such as juice, coffee, and cereal processing plants. The contamination of the water used for drinking and other purposes by partially treated or untreated discharges from chemical industries, petrochemical industries, oil refineries, oil spills, rolling steel mills, unrefined domestic sludge, and pesticide runoff threaten both human health and environmental health [1]. Dyestuffs, one of many different types of contaminants, are among the chemicals that pose this threat. Synthetic dyestuffs are widely used worldwide in textile staining processes. Synthetic dyestuff classes are the azo type, including reactive, disperse, and acid dyes. Azo dyes account for 65% of the total dye production in the world [2]. Today, biological treatment is the most widely used method to decompose dye waste. However, this process is not very successful in removing dyes effectively. For this reason, dyes

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Section: Materials and Methods Chemicals Solutions And Matter-materials Usedmentioning

confidence: 99%

Adsorption Of Methylene Blue from Aqueous Solution with Sulfuric Acid Activated Corn Cobs: Equilibrium, Kinetics, and Thermodynamics Assessment

Bozbeyoglu

Duran

Baltacı

et al. 2020

Hittite J. Sci. Eng.

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“…These compounds show anti‐inflammatory, bactericide, cardiovascular protective, blood sugar regulative and anti‐tumour properties [206] . Hydrochars can also be prepared by exposing the husk to a hydrothermal process at 180 °C; producing hydrochars with large specific surface areas, which could therefore act as an adsorbent for methylene blue dye [207] …”

Section: Fruits and Nuts As Potential Brazilian Renewable Sourcesmentioning

confidence: 99%

“…[206] Hydrochars can also be prepared by exposing the husk to a hydrothermal process at 180°C; producing hydrochars with large specific surface areas, which could therefore act as an adsorbent for methylene blue dye. [207] Spent coffee ground (SCG) is another potential waste that can be transformed into chemicals or incorporated into materials. SCG has proven its potential application as an adsorbent of cationic (toluidine blue and crystal violet) [208] and anionic (congo red, reactive blue 5) [209] dyes in aqueous solution.…”

Section: Coffeementioning

confidence: 99%

Opportunities for the Use of Brazilian Biomass to Produce Renewable Chemicals and Materials

et al. 2020

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This Review highlights the principal crops of Brazil and how their harvest waste can be used in the chemicals and materials industries. The Review covers various plants; with grains, fruits, trees and nuts all being discussed. Native and adopted plants are included and studies on using these plants as a source of chemicals and materials for industrial applications, polymer synthesis, medicinal use and in chemical research are discussed. The main aim of the Review is to highlight the principal Brazilian agricultural resources; such as sugarcane, oranges and soybean, as well as secondary resources, such as andiroba brazil nut, buriti and others, which should be explored further for scientific and technological applications. Furthermore, vegetable oils, carbohydrates (starch, cellulose, hemicellulose, lignocellulose and pectin), flavones and essential oils are described as well as their potential applications.

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“…An earlier research (Nae-Wen & Wu, 2003) reported about processing of coffee husk waste using a rotary reactor with a temperature of 800 o C within 1 hour 30 minutes to 4 hours 30 minutes and the activator used with concentrations between 10 to 40%. Later, an investigation (Kurniawan et al, 2006), showed the performance of absorbents from various agricultural wastes in adsorbing heavy metals in the form of (Cd ( Recently, development of activated carbon from coffee husk was carried-out through hydrothermal carbonization under low temperature conditions (180 C) and followed by chemical activation with KOH (Tran et al, 2020). The absorption capacity was analyzed with methylene blue solution.…”

Section: Cassava Peelmentioning

confidence: 99%

Preparation and Characterization of Activated Carbon Made from Robusta Coffee Skin (Coffea Canephora)

Raihan

Setiawan

Hakim

et al. 2020

J. Rekayasa Kim. Lingkung.

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Indonesia is one of the coffee-producing countries where production tends to increase from year to year. Currently, residuals from coffee-fruit processing such as coffee-skin and husks are thrown away without any use and this biomass residual contains several toxic chemicals such as alkaloids, tannins, and polyphenols. One of potential uses of coffee-industry by-product is to make activated carbon (ACs), which is made through a carbonation process and followed by an activation process. In this study, chemical activation was carried out using chemical activators ZnCl2 and NaOH. The purpose of this study is to prepare and investigate the characteristics of chemically activated coffee skin bio-char focusing on the surface properties and iodine adsorption capacity. Prior to carbon activation, a purpose built pilot-scale reactor was fabricated and tested at temperatures of 400 °C and 500 °C. The difference in carbonation temperature and variations in activator concentration alter the absorption properties. The results showed that the coffee-skin pyrolyzed at 500 °C and activated by 2% NaOH solution exhibits the highest absorption value of 720.2 mg/g. Lower absorption values were observed in any ZnCl2 activator samples. SEM-EDS analysis result suggests significant changes in composition of the ACs before and after activation. Most of impurities are gone during activation and washing. The value of C atoms increases and the pores structure of the activated carbon are expanding showing suitable properties for adsorbent.

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Adsorption isotherms and kinetic modeling of methylene blue dye onto a carbonaceous hydrochar adsorbent derived from coffee husk waste

Cited by 222 publications

References 66 publications

Adsorption Of Methylene Blue from Aqueous Solution with Sulfuric Acid Activated Corn Cobs: Equilibrium, Kinetics, and Thermodynamics Assessment

Adsorption Of Methylene Blue from Aqueous Solution with Sulfuric Acid Activated Corn Cobs: Equilibrium, Kinetics, and Thermodynamics Assessment

Opportunities for the Use of Brazilian Biomass to Produce Renewable Chemicals and Materials

Preparation and Characterization of Activated Carbon Made from Robusta Coffee Skin (Coffea Canephora)

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