Application of waste peanut shells to form activated carbon and its utilization for the removal of Acid Yellow 36 from wastewater

Garg, Deepak; Kumar, Shashi; Sharma, Komal; Majumder, C. B.

doi:10.1016/j.gsd.2019.01.010

Cited by 66 publications

(21 citation statements)

References 38 publications

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“…The opposite results were reported in [14], where the pyrolysis temperature increased from 400 • C to 600 • C (in a nitrogen atmosphere and with 2 h exposure) decreased the specific surface area of almond and nut shell biochars. Similar results were reported in [15] for the peanut shell biochar, obtained by H 3 PO 4 treatment and pyrolysis at 650 • C in a nitrogen atmosphere, with 2 h exposure in case of Acid Yellow 36 removal. Good adsorption properties for heavy metals (Cd, Hg, Pb) were reported in [16] for shea and groundnut shell biochars obtained by pyrolysis at 350 • C and 700 • C. Despite a large number of studies, the majority of them are focused on one of two types of nut shells, which hinders the comparison of different solutions for processing nut shells of different origin.…”

Section: Introductionsupporting

confidence: 88%

Analysis of the Physicochemical Characteristics of Biochar Obtained by Slow Pyrolysis of Nut Shells in a Nitrogen Atmosphere

et al. 2021

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The process of slow pyrolysis of seven nut shell samples, in a nitrogen-purged atmosphere, has been studied, as well as characteristics of biochar obtained. The heat carrier with a temperature of 400–600 °C (with a step of 100 °C) was supplied indirectly using a double-walled reactor. The heating rate was 60 °C/min. At increased temperature of the heating medium, a decrease in the amount of the resulting carbon residue averaged 6.2 wt%. The release of non-condensable combustible gas-phase compounds CO, CH4, and H2, with maximum concentrations of 12.7, 14.0, and 0.7 vol%, respectively, was registered. The features of the obtained biochar sample conversions were studied using thermal analysis in inert (nitrogen) and oxidative (air) mediums at 10 °C/min heating rate. Kinetic analysis was performed using Coats–Redfern method. Thermal analysis showed that the main weight loss (Δm = 32.8–43.0 wt%) occurs at temperatures ranging between 290 °C and 400 °C, which is due to cellulose decomposition. The maximum carbon content and, hence, heat value were obtained for biochars made from macadamia nut and walnut shells. An increased degree of coalification of the biochar samples affected their reactivity and, in particular, caused an increase in the initial temperature of intense oxidation (on average, by 73 °C). While technical and elemental composition of nut shell samples studied were quite similar, the morphology of obtained biochar was different. The morphology of particles was also observed to change as the heating medium temperature increased, which was expressed in the increased inhomogeneity of particle surface. The activation energy values, for biochar conversion in an inert medium, were found to vary in the range of 10–35 kJ/mol and, in an oxidative medium—50–80 kJ/mol. According to literature data, these values were characteristic for lignin fibers decomposition and oxidation, respectively.

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Section: Introductionsupporting

confidence: 88%

Analysis of the Physicochemical Characteristics of Biochar Obtained by Slow Pyrolysis of Nut Shells in a Nitrogen Atmosphere

et al. 2021

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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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“…In recent years, planners, environmental scientists, and decision-makers have been paying attention to sustainable resource development [1]. Within these resources, water is the most precious renewable natural resource, is the essential enabler, and a major source of survival of life [2,3]. Groundwater is the most important source of drinking water in the world [4].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Malachite Green Dye onto Mesoporous Natural Inorganic Clays: Their Equilibrium Isotherm and Kinetics Studies

Ullah

Rahman

Ullah

et al. 2021

Water

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Contamination of water with organic dyes is a major environmental concern as it causes serious life-threatening environmental problems. The present research was designed to evaluate the potential of three different natural inorganic clays (NICs) i.e., Pakistani bentonite clay (PB), bentonite purchased from Alfa Aesar (BT), and Turkish red mud (RM) for malachite green (MG) dye removal from an aqueous solution. Various analytical techniques, namely X-ray fluorescence spectrometry (XRF), X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), Brunauer–Emmett–Teller surface area measurement (BET), and thermogravimetric analysis (TGA), were used to investigate the physicochemical properties of the NICs samples. The effect of adsorption operational parameters such as contact time, aqueous phase pH, dye concentration, and amount of NICs on the adsorption behavior of MG onto NICs samples were investigated under the batch adsorption system. The equilibrium and kinetic inspection reflected the best description of MG adsorption behavior by the Langmuir isotherm model and pseudo-first-order kinetic model, respectively. The results indicated that the adsorption was favorable at higher pH. The maximum adsorption capacities calculated by Langmuir isotherm for PB, BT, and RM were found to be 243.90 mg/g, 188.68 mg/g, and 172.41 mg/g, respectively. It can be concluded that natural inorganic clays with a higher surface area can be used as an effective adsorbent material to remove the MG dye from an aqueous solution.

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Application of waste peanut shells to form activated carbon and its utilization for the removal of Acid Yellow 36 from wastewater

Cited by 66 publications

References 38 publications

Analysis of the Physicochemical Characteristics of Biochar Obtained by Slow Pyrolysis of Nut Shells in a Nitrogen Atmosphere

Analysis of the Physicochemical Characteristics of Biochar Obtained by Slow Pyrolysis of Nut Shells in a Nitrogen Atmosphere

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

Adsorption of Malachite Green Dye onto Mesoporous Natural Inorganic Clays: Their Equilibrium Isotherm and Kinetics Studies

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