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Chili seeds (CS) represent one of the most abundant residues in Mexico due to the high production and consumption. In this work, CS were used as raw material for the production of low-cost adsorbents for the removal of methylene blue from water. The adsorbents were synthesized from a hydrothermal treatment (based on a surface response experiment design) and characterized texturally by assessing changes in their properties. The mass yield (%R), carbon content (%C), and the second order adsorption rate constant (k) were derived in relation to a list of input variables (e.g., the reaction temperature, residence time, and water/biomass ratio). Accordingly, those output variables were affected most sensitively by temperature and/or residence time, while changes of the water/biomass ratio were insignificant. Besides, an increase in the reaction temperature favored the degradation of the lignocellulosic material with increases in the carbon fixation. The adsorption capacity of methylene blue (MB) by the hydrochars depended drastically on the oxygen/carbon ratio. As such, the maximum adsorption capacity value of 145 mg g was attained at the initial MB concentration of ~3000 μM (optimal oxygen/carbon value of 0.43). On the other hand, the maximum partition coefficient (K) was estimated as 2.96 μM mg g with the initial/equilibrium concentrations of 20.5/6.93 μM. The performance evaluation between different studies, when made in terms of K, suggests that the tested hydrochar should be one of the best adsorbents to treat methylene blue, especially at near-real environmental conditions (e.g., below micromolar levels).
This article was published in the following journal.
Name: Environmental research
Plant growth and development are largely regulated by non-coding RNAs (ncRNA); thus ncRNA based markers would be rewarding in molecular breeding. In the present study, for the first time we developed ...
Chromoplasts are typical plastids of fruits and flowers, deriving from chloroplasts through complex processes of re-organization and recycling. Since this transition leads to the production of reactiv...
Plant defensins are low molecular weight basic peptides ranging from 5 to 7 kDa, with capacity of inhibiting various pathogens, including fungi. They are present in different tissues of plants, includ...
Herein, a new magnetic hydrochar was prepared through co-hydrothermal treatment of vinasse with red mud, two abundant industrial wastes, and its adsorption property was evaluated on Pb(II), selected m...
Improving the photocatalytic capacity of hydrochar to apply in wastewater treatment is of great significance. In this study, a novel heterogeneous photocatalytic material was prepared by compounding h...
The purpose of this study is to test whether the three-seeds mixture tea reduces sputum and/or cough in COPD patients, and if so, to evaluate whether the three-seeds mixture changes the lu...
Limited utilizations of date seeds have previously been explored, and so previously wastage has often been the normality. However, research now indicates that several fruit seeds contain h...
Study objectives To establish whether an oral intake of Capsicum oleoresin; capsaicinoids expressed as 0.4 mg capsaicin (C18H27N03; Mw: 305.4) in each capsule (from chili extract) can des...
The size of the prostate changes due to insertion of the radioactive seeds. We will measure the prostate size, before and after the procedure.
The purpose of this study is to compare the glucose, insulin and subjective hunger responses elicited by oats with additional dried fruits, nuts and seeds soaked overnight in skim milk and...
Worthless, damaged, defective, superfluous or effluent material from industrial operations. It represents an ecological problem and health hazard.
An alkylamide found in CAPSICUM that acts at TRPV CATION CHANNELS.
The genetic constitution of the individual; the characterization of the genes.
Gymnosperms are a group of vascular plants whose seeds are not enclosed by a ripened ovary (fruit), in contrast to ANGIOSPERMS whose seeds are surrounded by an ovary wall. The seeds of many gymnosperms (literally, "naked seed") are borne in cones and are not visible. Taxonomists now recognize four distinct divisions of extant gymnospermous plants (CONIFEROPHYTA; CYCADOPHYTA; GINKGOPHYTA; and GNETOPHYTA).
The branch of applied psychology concerned with the application of psychologic principles and methods to industrial problems including selection and training of workers, working conditions, etc.