An economically viable method for the removal of cobalt ions from aqueous solution using raw and modified rice straw

Swelam, A. A.; Awad, Mahrous; Salem, A.; Elfeky, Ahmed S.

doi:10.1016/j.hbrcj.2016.10.001

Cited by 23 publications

(7 citation statements)

References 26 publications

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“…Many types of natural materials or agricultural and (or) organic industrial waste [14][15][16] have been used for the removal of Co(II) ions from aqueous solution, but unfortunately none of these have been applied so far to industrial wastewater treatment. One possible explanation might be that most of these materials have moderate sorption capacities, which makes the treatment of industrial effluents requiring a large amount of such sorbent materials [17].…”

Section: Introductionmentioning

confidence: 99%

Potential Use of Biochar from Various Waste Biomass as Biosorbent in Co(II) Removal Processes

Lucaci

Bulgariu

Ahmad

et al. 2019

Water

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The removal of Co(II) ions from aqueous media was done using three types of biochars obtained from algae waste biomass, mustard waste biomass, and soy waste biomass. The biochar samples were obtained by pyrolysis of waste biomass resulted from biofules production, at relative low temperature (600–650 °C), and this procedure can be considered a suitable alternative to reduce the volume of such waste. FTIR spectra recorded for each type of biochar reveal the presence of several functional groups that can be used as binding sites for Co(II) retention. The batch biosorption experiments were performed as a function of initial Co(II) ions concentration and contact time, at constant solution pH (5.0), sorbent dose (8.0 g/L), and room temperature (25 ± 1 °C). The sorption experiments showed that the Co(II) ions retention reaches the equilibrium in maximum 60 min, and the maximum sorption capacity follows the order: Mustard biochar (MBC—24.21 mg/g) < soy biochar (SBC—19.61 mg/g) < algae biochar (ABC—11.90 mg/g). The modeling of experimental data proves that the retention of Co(II) ions from aqueous solution occurs through electrostatic interactions, and that the sorption process takes place until a monolayer coverage is formed on the outer surface of the biochar. This information is very useful in the design of a suitable desorption system. The desorption results showed that by treating the biochar samples loaded with Co(II) ions with 0.1 mol/L HNO3 solution, over 92% of Co(II) ions are desorbed and can be recovered, and the biochar samples can be used in at least three sorption/desorption cycles. All the experimental observations sustain the potential use of biochar obtained from different types of waste biomass as a promising alternative sorbent for the removal of Co(II) ions from aqueous media.

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Section: Introductionmentioning

confidence: 99%

Potential Use of Biochar from Various Waste Biomass as Biosorbent in Co(II) Removal Processes

Lucaci

Bulgariu

Ahmad

et al. 2019

Water

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“…Positive ∆H º values were obtained for all metal ions and indicated by the endothermic character of the biosorption. Positive ΔS ° values acquired for cations in the analyzed systems suggested high affinity and the presence of a low energy barrier of metal adsorption processes using Shewanella xiamenensis biofilm placed on zeolite [ 41 ].…”

Section: Discussionmentioning

confidence: 99%

Metal Removal from Nickel-Containing Effluents Using Mineral–Organic Hybrid Adsorbent

et al. 2020

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Nickel is one of the most dangerous environmental pollutants and its removal from wastewater is an important task. The capacity of a mineral–organic hybrid adsorbent, consisting of Shewanella xiamenensis biofilm and zeolite (clinoptilolite of the Chola deposit), to remove metal ions from nickel-containing batch systems under different experimental conditions was tested. The obtained biosorbent was characterized using neutron activation, SEM, and FTIR techniques. It was established that maximum removal of cations, up to 100%, was achieved at pH 6.0. Several mathematical models were applied to describe the equilibrium and kinetics data. The maximum adsorption capacity of the hybrid biosorbent, calculated using the Langmuir model, varied from 3.6 to 3.9 mg/g. Negative Gibbs energy values and positive ∆H° values indicate the spontaneous and endothermic character of the biosorption process. The effects of several parameters (pH and biosorbent dosage) on Ni(II) removal from real effluent, containing nickel with a concentration of 125 mg/L, were investigated. The optimal pH for Ni(II) removal was 5.0–6.0 and an increase of sorbent dosage from 0.5 to 2.0 led to an increase in Ni(II) removal from 17% to 27%. At two times effluent dilution, maximum Ni(II) removal of 26% was attained at pH 6.0 and sorbent dosage of 1.0 g. A 12-fold effluent dilution resulted in the removal of 72% of Ni(II) at the same pH and sorbent dosage values. The obtained hybrid biosorbent can be used for Ni(II) removal from industrial effluents with low Ni(II) concentrations.

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“…It is an imperative trace element, and it is being extensively employed in plenty of industries as a part of diverse anthropogenic actions, such as mining, colorants in glass, paints, ceramics, discarded batteries, alloys manufacturing, petro-chemical, dye, metal industries, etc. [ 61 ]. By and large, it enters the environment from the eruptions of volcanoes, wildfires in forests, and overflow or leaching of the rainwater through natural rocks enclosing cobalt.…”

Section: Hazardous and Toxic Ions Of Heavy Metals As Pollutants In Industrial Wastewatermentioning

confidence: 99%

A State-of-the-Art Review on Innovative Geopolymer Composites Designed for Water and Wastewater Treatment

Luhar

Abdullah

et al. 2021

Materials

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There is nothing more fundamental than clean potable water for living beings next to air. On the other hand, wastewater management is cropping up as a challenging task day-by-day due to lots of new additions of novel pollutants as well as the development of infrastructures and regulations that could not maintain its pace with the burgeoning escalation of populace and urbanizations. Therefore, momentous approaches must be sought-after to reclaim fresh water from wastewaters in order to address this great societal challenge. One of the routes is to clean wastewater through treatment processes using diverse adsorbents. However, most of them are unsustainable and quite costly e.g. activated carbon adsorbents, etc. Quite recently, innovative, sustainable, durable, affordable, user and eco-benevolent Geopolymer composites have been brought into play to serve the purpose as a pretty novel subject matter since they can be manufactured by a simple process of Geopolymerization at low temperature, lower energy with mitigated carbon footprints and marvellously, exhibit outstanding properties of physical and chemical stability, ion-exchange, dielectric characteristics, etc., with a porous structure and of course lucrative too because of the incorporation of wastes with them, which is in harmony with the goal to transit from linear to circular economy, i.e., “one’s waste is the treasure for another”. For these reasons, nowadays, this ground-breaking inorganic class of amorphous alumina-silicate materials are drawing the attention of the world researchers for designing them as adsorbents for water and wastewater treatment where the chemical nature and structure of the materials have a great impact on their adsorption competence. The aim of the current most recent state-of-the-art and scientometric review is to comprehend and assess thoroughly the advancements in geo-synthesis, properties and applications of geopolymer composites designed for the elimination of hazardous contaminants viz., heavy metal ions, dyes, etc. The adsorption mechanisms and effects of various environmental conditions on adsorption efficiency are also taken into account for review of the importance of Geopolymers as most recent adsorbents to get rid of the death-defying and toxic pollutants from wastewater with a view to obtaining reclaimed potable and sparkling water for reuse offering to trim down the massive crisis of scarcity of water promoting sustainable water and wastewater treatment for greener environments. The appraisal is made on the performance estimation of Geopolymers for water and wastewater treatment along with the three-dimensional printed components are characterized for mechanical, physical and chemical attributes, permeability and Ammonium (NH4+) ion removal competence of Geopolymer composites as alternative adsorbents for sequestration of an assortment of contaminants during wastewater treatment.

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An economically viable method for the removal of cobalt ions from aqueous solution using raw and modified rice straw

Cited by 23 publications

References 26 publications

Potential Use of Biochar from Various Waste Biomass as Biosorbent in Co(II) Removal Processes

Potential Use of Biochar from Various Waste Biomass as Biosorbent in Co(II) Removal Processes

Metal Removal from Nickel-Containing Effluents Using Mineral–Organic Hybrid Adsorbent

A State-of-the-Art Review on Innovative Geopolymer Composites Designed for Water and Wastewater Treatment

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