scholarly journals Wastewater Treatment for Heavy Metals and Dyes Using Low-Cost Biosorbents: A Review

2021 ◽  
Vol 44 (2) ◽  
pp. 47-56
Author(s):  
Andreea BONDAREV
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Aqueous Solutions ◽  
Industrial Wastewater ◽  
Dye Removal ◽  
Environmental Problem ◽  
Low Cost ◽  
Sorption Kinetics ◽  
Inorganic Cations ◽  
Sustainable Wastewater Treatment

The pollution of industrial wastewater with heavy metals and dyes is a highly important environmental problem, because of the propagation of the pollution and because of its unfavourable consequences. Sustainable wastewater treatment is one of the foremost challenges of this century. Various waste materials characterized by lignocellulose composition are low cost, non-conventional adsorbent for biosorptive removal of heavy metal ions from aqueous solutions. Recent studies point to the potential of use of low-cost materials (zeolites, carrot residue and green tea waste) as effective sorbents for the removal of Cd2+ from aqueous solution. The use of bentonite to the treatment of wastewater containing reactive dyes in aqueous solutions requires the modification of the hydrophilic surface by inorganic cations with organic cations exchange. The use of bentonite as an inexpensive sorbent for the removal of Remazol Brilliant Blue R (RBBR) from synthetic aqueous solutions has been also presented in recent studies. The influence of some parameters such as: pH, initial dye concentration, sorbent dose on sorption kinetics for dye removal has been reviewed in this paper.

Development of a method for detecting trace metals in aqueous solutions based on the coordination chemistry of hexahydrotriazines

The Analyst ◽  
2015 ◽  
Vol 140 (15) ◽  
pp. 5184-5189 ◽  
Author(s):  
Rudy J. Wojtecki ◽  
Alexander Y. Yuen ◽  
Thomas G. Zimmerman ◽  
Gavin O. Jones ◽  
Hans W. Horn ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Coordination Chemistry ◽  
Trace Metals ◽  
Aqueous Solutions ◽  
Detection System ◽  
Low Cost ◽  
System P ◽  
Chemical Indicator

The detection of trace amounts (<10 ppb) of heavy metals in aqueous solutions is described using hexahydrotriazines as a chemical indicator and a low cost fluorimeter-based detection system.

scholarly journals REDUCTION OF METAL CATIONS CONTENT FROM THE AQUEOUS SOLUTIONS BY SORBENTS

2021 ◽  
Vol 2021 (6) ◽  
pp. 5307-5311
Author(s):  
IVETA PANDOVA ◽  
◽  
MIROSLAV RIMAR ◽  
Keyword(s):  
Heavy Metals ◽  
Aqueous Solutions ◽  
Natural Zeolite ◽  
Metal Cations ◽  
Sorption Kinetics ◽  
Synthetic Zeolite ◽  
Natural Zeolites ◽  
Chemically Treated ◽  
Synthetic Zeolites

The article presents the results of research on reducing the concentration of heavy metals, such as copper and nickel, on natural zeolite in comparison with synthetic zeolite and chemically treated natural zeolite. The reduction of the content of specific types of heavy metals from aqueous solutions was investigated by the method of sorption kinetics. The results indicate the ability of natural zeolites to compete with synthetic zeolites.

Preparation and Application of Polymer-Metal Oxide Nanocomposites in Wastewater Treatment

2020 ◽  
pp. 83-102
Author(s):  
Victor Odhiambo Shikuku ◽  
Wilfrida N. Nyairo
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Metal Oxides ◽  
Low Cost ◽  
Drinking Water Treatment ◽  
Synthesis Methods ◽  
Operational Conditions ◽  
Polymer Metal ◽  
Treatment Technologies ◽  
Sustainable Wastewater Treatment

The search for efficient and sustainable wastewater treatment technologies is a subject of continuing research. This is due to the emergence of new classes of water contaminants that are recalcitrant to the conventional wastewater treatment technologies and the stringent allowable limits for contaminant levels set by environmental management authorities. The chapter discusses the developments in synthesis methods and application of polymer-metal oxides as emerging facile materials for wastewater treatment. The varying uses of polymer-metal oxides for different processes in water treatment under varying operational conditions and their performance for different pollutants are critically analyzed. Their strengths and inherent limitations are also highlighted. The chapter demonstrates that polymer-metal oxides are facile low-cost and efficient materials and can be integrated in wastewater and drinking water treatment systems.

Practical Homemade Copper Filter by Banana Peels, Sand and Charcoal for Wastewater Treatment

2015 ◽  
Vol 804 ◽  
pp. 239-242
Author(s):  
Duongruitai Nicomrat ◽  
Jirasak Tharajak
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Environmental Problem ◽  
Copper Ions ◽  
Copper Ion ◽  
Filtration Efficiency ◽  
Agricultural Wastes ◽  
Toxic Heavy Metals ◽  
Extraction Period ◽  
Treatment Application

Copper ions are commonly contaminated in the effluents from many electronic factory. In copper filtration, most filter types are usually expensive and causes toxic residues and creates another health and environmental problem. Therefore, this research has been developed a copper filtration approach based on homemade non-hazardous residues of banana peels, unmeshed sand, and charcoal. The results showed that baked, minced banana peels media could absorb synthetic water having copper ion at 50 ppm with filtration efficiency of 70% within 2 hr. Baked minced banana peels in combination with sand and charcoal could adsorb Copper (II) at 50 mg/ mL more than 80%. However, the swollen structure of banana peels during copper (II) filtration caused limit filtration efficiency to 4-5 hour extraction period. The tentative wastewater treatment application is, therefore, the use of bio-adsorbent for effective adsorption of toxic heavy metals from effluents open discarded from agricultural wastes in the environment.

Sorption of Copper and Zinc from Aqueous Solutions by Microwave Incinerated Sugarcane Bagasse Ash (MISCBA)

2016 ◽  
Vol 835 ◽  
pp. 378-385 ◽  
Author(s):  
Ibrahim Umar Salihi ◽  
Shamsul Rahman Mohamed Kutty ◽  
Mohamed Hasnain Isa ◽  
Usman Aminu Umar ◽  
Emmanuel Olisa
Keyword(s):  
Heavy Metals ◽  
Aqueous Solution ◽  
Correlation Coefficient ◽  
Sugarcane Bagasse ◽  
Contact Time ◽  
Industrial Wastewater ◽  
Low Cost ◽  
Isotherm Model ◽  
Copper And Zinc ◽  
Sugarcane Bagasse Ash

Industrial wastewater containing toxic pollutants such as heavy metals tends to contaminate the environment once it is release without proper treatment. Heavy metals are toxic to both human and other living organisms. It is necessary to treat industrial wastewater polluted with heavy metals prior to its discharge into the receiving environment. In this study, low cost adsorbent was generated from sugarcane bagasse through incineration. The prepared adsorbent “microwave incinerated sugarcane bagasse ash” (MISCBA) was used in removing copper and zinc from aqueous solution. Parameters of importance such as pH, contact time and adsorbent dosages are studied to investigate their effects on the adsorption of copper and zinc. Maximum adsorption was observed at pH 6.0, contact time of 180 minutes and adsorbent dosage of 10 g/L. Zinc removal follows Langmuir isotherm model with correlation coefficient of 0.9291. Copper adsorption follows both Langmuir and Freundlich isotherm model with correlation coefficient of 0.9181 and 0.9742, respectively. Removal capacities of 38.4 mg/g and 20.4 mg/g were obtained for copper and zinc, respectively. Application of MISCBA as low - cost adsorbent have shown significant outcome in removal of copper and zinc from aqueous solution.

Efficiency of almond gum as a low-cost adsorbent for methylene blue dye removal from aqueous solutions

2015 ◽  
Vol 74 ◽  
pp. 903-911 ◽  
Author(s):  
Fatma Bouaziz ◽  
Mohamed Koubaa ◽  
Fatma Kallel ◽  
Fatma Chaari ◽  
Dorra Driss ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Aqueous Solutions ◽  
Dye Removal ◽  
Low Cost ◽  
Blue Dye ◽  
Methylene Blue Dye

scholarly journals Heavy Metal Adsorption ontoKappaphycussp. from Aqueous Solutions: The Use of Error Functions for Validation of Isotherm and Kinetics Models

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Md. Sayedur Rahman ◽  
Kathiresan V. Sathasivam
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Aqueous Solutions ◽  
Kinetic Models ◽  
Adsorption Process ◽  
Low Cost ◽  
Metal Adsorption ◽  
Red Seaweed ◽  
Error Functions ◽  
Removal Of Heavy Metals

Biosorption process is a promising technology for the removal of heavy metals from industrial wastes and effluents using low-cost and effective biosorbents. In the present study, adsorption of Pb2+, Cu2+, Fe2+, and Zn2+onto dried biomass of red seaweedKappaphycussp. was investigated as a function of pH, contact time, initial metal ion concentration, and temperature. The experimental data were evaluated by four isotherm models (Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich) and four kinetic models (pseudo-first-order, pseudo-second-order, Elovich, and intraparticle diffusion models). The adsorption process was feasible, spontaneous, and endothermic in nature. Functional groups in the biomass involved in metal adsorption process were revealed as carboxylic and sulfonic acids and sulfonate by Fourier transform infrared analysis. A total of nine error functions were applied to validate the models. We strongly suggest the analysis of error functions for validating adsorption isotherm and kinetic models using linear methods. The present work shows that the red seaweedKappaphycussp. can be used as a potentially low-cost biosorbent for the removal of heavy metal ions from aqueous solutions. Further study is warranted to evaluate its feasibility for the removal of heavy metals from the real environment.

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