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Coffee husk
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This study aims to develop a novel biochar derived from coffee husk to effectively eliminate ammonium from the aqueous solution. According to the preliminary test, the coffee husk was selected among several popular agricultural wastes for biochar synthesis; then, the pristine biochar (BCFH) was modified using NaOH to achieve an activated biochar (BCFH-NaOH).
8p
vijeff
30-11-2023
3
2
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Mushroom cultivation is one of the efficient ways by which residues can be recycled and also improve food supply with high food quality to the humans. Cultivation of shiitake mushroom has increased tremendously throughout the world because of its abilities to grow at a wide range of temperature and utilized various agro-based residues as well as its medicinal value.
7p
viisac
23-09-2023
6
1
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In the work "Adsorption behavior of Pb(II) in aqueous solution using coffee husk-based activated carbon modified by nitric acid", activated carbon (AC) was prepared from coffee husk and modified by nitric acid for effective lead ions removal from aqueous solution. The as-prepared samples have uniform particles size, developed surface area and contain acidic surface functional groups. Nitric acid modification showed a pronounced effect on improving Pb(II) adsorption capacity.
10p
runordie3
27-06-2022
9
2
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In this work, two series of composite materials based on unsaturated polyester (UPE) resin and coffee husk powder were fabricated by a hot pressing method using methyl ethyl ketone peroxide (MEKP) as an initiator. The gel time of UPE resin is 32 2 min with 0.5 wt % of MEKP was determined according to ASTM D2471. The differential scanning calorimetry (DSC) reveals that the curing process should be post-cured.
9p
visherylsandber
28-06-2022
27
5
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Two biochars derived from wattle bark (BA) and coffee husks (BC) used to remove methylene blue (MB) which achieved the yield values of 33.3 % to 35.08% at 500 oC of pyrolysis. Adsorption increased with the rising of the dose until 2 g/L for BC, and 5 g/L for BA, respectively. When rising pH, the increasing trend was observed for BA, and BC, from 67 % at pH of 2 to 93% at pH of 12.
4p
viwinter2711
05-10-2021
8
1
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The research objectives of the thesi: Manufacturing biochar (BC) and activated carbon from coffee husk; Fabrication of biochar/activated carbon composite materials from coffee husk and MnFe2O4 nanomaterials to treat Cr(VI) and Ni(II) ions in water. Clarifying adsorption mechanism and heavy metal ion adsorption model on VLHP from coffee husk.
26p
extraenglish
24-05-2021
17
3
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This study, therefore, aimed to investigate the application of biochar from agricultural wastes to remove the excess nitrogen in domestic wastewater. In particular, this work examined the utilization of biochar obtained from coffee husk pyrolyzed at 350 oC to adsorb ammonium. Besides, adding biochar could be a simple and effective method for the initiation of activated sludge granulation to facilitate the treatment of low C/N ratio wastewater.
11p
cothumenhmong9
04-01-2021
13
2
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Adsorption of methylene blue from aqueous solutions using activated carbon derived from coffee husks
The adsorption of methylene blue (MB) onto activated carbon (AC) derived from coffee husk using zinc chloride activation at 600 oC was studied. The effects of various parameters such as contact time, initial MB concentration and temperature were investigated. The adsorption kinetics of pseudo first-order and pseudo second-order were used for the kinetic studies and were found to follow the pseudo second-order kinetic model.
12p
tamynhan9
02-12-2020
10
1
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In this study, the adsorption kinetics and equilibrium of methylene blue from aqueous solution onto activated carbon derived from coffee husk using one step ZnCl2 activation were investigated. The influence of initial methylene blue concentration and temperature were evaluated employing the batch experiment. To the experimental data, different kinetics and isotherm models were applied, finding that the best fitted is the pseudo-second-order equation and the Redlich-Peterson model, respectively.
14p
koxih_kothogmih5
04-09-2020
18
1
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The adsorption kinetics and equilibrium of methylene blue from aqueous solution onto activated carbon derived from coffee husk using one step ZnCl2 activation were investigated. The influence of initial methylene blue concentration and temperature were evaluated employing the batch experiment.
13p
koxih_kothogmih5
04-09-2020
17
1
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Agricultural waste has received much attention for its potential of being efficient and low-cost adsorbents to remove heavy metals from water. This paper presents a batch investigation of the potential of an adsorbent produced from coffee bean husk for removing copper, nickel and zinc ions from aqueous solution. At the initial pH of 5.0, a dose of 10 g/L, initial concentration of 50 mg/L, shaking speed of 100 rpm, particle size of 0.
7p
angicungduoc5
13-06-2020
8
0
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This research was composed of two experiments, in which two factors were arranged with the full block random type with three replications. The first experiment consisting of factor A was materials mixed with coffee husks type (A1: manure (cow dung); A2: fresh straw; A3: vegetable waste) and factor B was rate of mixing materials (B1: 0% (control); B2: 20%; B3: 30%).
10p
tomhiddleston
25-05-2020
12
0
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In this study, the coffee husk was heated in Ar gas at temperatures of 300 oC, 400 oC, 500 oC, 600 oC for 30 minutes, 60 minutes and 90 minutes, then was denatured by impregnation with HNO3 at different concentrations (1M, 3M, 5M).
7p
abcxyz123_02
03-03-2020
14
2
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Coffee husks were transformed into magnetic adsorption materials by the hydrothermal carbonization (HTC) method at low temperature (180 oC) in the presence of iron (III) salt. For the capability of absorbing methylene blue, the absorbed content by biochar is 105.831 mg/g and by magnetic adsorption material is 263.158 mg/g
8p
cumeo3000
01-08-2018
32
0
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The conditions of the hydrothermal carbonization process to produce biochar from coffee husk will be optimized for maximum yield. Besides, response surface methodology (RSM) and central composite face-centered (CCF) method will be used in designing experiments. Also, the optimal value of factors such as temperature, time and biomass: water ratio which can provide a maximum yield of biochar will be worked out using Modde 5.0.
8p
cumeo3000
01-08-2018
59
1
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