A simple and rapid algal assay kit to assess toxicity of heavy metal-contaminated water

Use of agro-waste (Musa paradisiaca peels) as a sustainable biosorbent for toxic metal ions removal from contaminated water

10.31221/osf.io/yrpvn ◽

2019 ◽

Author(s):

Chem Int

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Contact Time ◽

Metal Ion ◽

Equilibrium Concentration ◽

Ion Concentration ◽

Contaminated Water ◽

Musa Paradisiaca ◽

Percentage Removal ◽

Adsorbent Dose

A study of removal of heavy metal ions from heavy metal contaminated water using agro-waste was carried out with Musa paradisiaca peels as test adsorbent. The study was carried by adding known quantities of lead (II) ions and cadmium (II) ions each and respectively into specific volume of water and adding specific dose of the test adsorbent into the heavy metal ion solution, and the mixture was agitated for a specific period of time and then the concentration of the metal ion remaining in the solution was determined with Perkin Elmer Atomic absorption spectrophotometer model 2380. The effect of contact time, initial adsorbate concentration, adsorbent dose, pH and temperature were considered. From the effect of contact time results equilibrium concentration was established at 60minutes. The percentage removal of these metal ions studied, were all above 90%. Adsorption and percentage removal of Pb2+ and Cd2+ from their aqueous solutions were affected by change in initial metal ion concentration, adsorbent dose pH and temperature. Adsorption isotherm studies confirmed the adsorption of the metal ions on the test adsorbent with good mathematical fits into Langmuir and Freundlich adsorption isotherms. Regression correlation (R2) values of the isotherm plots are all positive (>0.9), which suggests too, that the adsorption fitted into the isotherms considered.

Download Full-text

Divalent heavy metal ions removal from contaminated water using positively charged membrane prepared from a new carbon nanomaterial and HPEI

Chemical Engineering Journal ◽

10.1016/j.cej.2020.124192 ◽

2020 ◽

Vol 388 ◽

pp. 124192 ◽

Cited By ~ 12

Author(s):

Maryam Ahmadzadeh Tofighy ◽

Toraj Mohammadi

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Contaminated Water ◽

Carbon Nanomaterial ◽

Charged Membrane ◽

Heavy Metal Ions Removal ◽

Positively Charged ◽

Metal Ions Removal

Download Full-text

A Review on Current Development of Animal Bone-Based Sorbent for Heavy Metals Removal from Contaminated Water and Wastewater

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.897.109 ◽

2021 ◽

Vol 897 ◽

pp. 109-115

Author(s):

Sri Martini ◽

Kiagus Ahmad Roni ◽

Dian Kharismadewi ◽

Erna Yuliwaty

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Metal Removal ◽

Inorganic Compounds ◽

Heavy Metal Removal ◽

Influential Factors ◽

Contaminated Water ◽

Animal Bone ◽

Water And Wastewater ◽

Cow Bone

This review article presents the usage of various animal bones such as chicken bone, fish bone, pig bone, camel bone, and cow bone as reliable biosorbent materials to remove heavy metals contained in contaminated water and wastewater. The sources and toxicity effects of heavy metal ions are also discussed properly. Then specific insights related to adsorption process and its influential factors along with the proven potentiality of selected biosorbents especially derived from animal bone are also explained. As the biosorbents are rich in particular organic and inorganic compounds and functional groups in nature, they play an important role in heavy metal removal from contaminated solutions. Overall, after conducting study reports on the literature, a brief conclusion can be drawn that animal bone waste has satisfactory efficacy as effective, efficient, and environmentally friendly sorbent material.

Download Full-text

Using Recombinant E. coli Displaying Surface Heavy Metal Binding Proteins for Removal of Pb2+ from Contaminated Water

Journal of Bioremediation & Biodegradation ◽

10.4172/2155-6199.1000442 ◽

2018 ◽

Vol 09 (03) ◽

Cited By ~ 1

Author(s):

Mohamed Shehata ◽

Ken ichi Yamazaki

Keyword(s):

Heavy Metal ◽

Metal Binding ◽

Binding Proteins ◽

Contaminated Water ◽

E Coli ◽

Heavy Metal Binding

Download Full-text

A synergistic use of microalgae and macroalgae for heavy metal bioremediation and bioenergy production through hydrothermal liquefaction

Sustainable Energy & Fuels ◽

10.1039/c8se00408k ◽

2019 ◽

Vol 3 (1) ◽

pp. 292-301 ◽

Cited By ~ 12

Author(s):

Marco Piccini ◽

Sofia Raikova ◽

Michael J. Allen ◽

Christopher J. Chuck

Keyword(s):

Heavy Metal ◽

Hydrothermal Liquefaction ◽

Contaminated Water ◽

Bioenergy Production ◽

Synergistic Approach ◽

Metal Bioremediation

In this investigation a novel synergistic approach for the bioremediation of metal-contaminated water and bioenergy production was developed.

Download Full-text

Ecofriendly Approach for Treatment of Heavy-Metal-Contaminated Water Using Activated Carbon of Kernel Shell of Oil Palm

Materials ◽

10.3390/ma13112627 ◽

2020 ◽

Vol 13 (11) ◽

pp. 2627

Author(s):

Rabia Baby ◽

Mohd Zobir Hussein

Keyword(s):

Heavy Metal ◽

Activated Carbon ◽

Oil Palm ◽

Metal Ion ◽

Agricultural Waste ◽

Palm Kernel ◽

Significant Risk ◽

Contaminated Water ◽

Ion Adsorption ◽

Metal Ion Adsorption

Heavy metal ion contamination in water poses a significant risk to human health as well as to the environment. Millions of tons of agricultural wastes are produced from oil palm plantations which are challenging to manage. In this study, we converted palm kernel shells (PKS) from a palm oil plantation into activated carbon (AC) having a surface area of 1099 m2/g using phosphoric acid as an activator. The prepared material was characterized using BET, XRD, Raman, FESEM and FTIR analyses. The AC was applied for the treatment of heavy-metal-contaminated water, and different parameters; the pH, adsorbent dosage, contact time and metal ion concentrations were varied to determine the optimal conditions for the metal ion adsorption. Different kinetic models; the zeroth, first-order and second-order, and Freundlich and Langmuir isotherm models were used to determine the mechanism of metal ion adsorption by the AC. Under the optimized conditions, Cr6+ and Pb2+ were removed completely, while Zn2+ and Cd2+ were more than 80% removed. This is a greener approach in which an agricultural waste, PKS is converted into a useful product, activated carbon and subsequently applied for the treatment of heavy metal-contaminated water.

Download Full-text