2D amorphous MoS3 nanosheets with porous network structures for scavenging toxic metal ions from synthetic acid mine drainage

2019 ◽  
Vol 7 (32) ◽  
pp. 18799-18806 ◽  
Author(s):  
Weng Fu ◽  
Siyuan Yang ◽  
Hong Yang ◽  
Bao Guo ◽  
Zhiqiang Huang
Keyword(s):  
Heavy Metal ◽  
Acid Mine Drainage ◽  
Metal Ions ◽  
Network Structure ◽  
Mine Drainage ◽  
Toxic Metal ◽  
Metal Adsorption ◽  
Heavy Metal Adsorption ◽  
Porous Network ◽  
Synthetic Acid

2D amorphous MoS3 nanosheets with a unique porous network structure for heavy metal adsorption.

scholarly journals Pemberian Arang Aktif Dari Cangkang Kelapa Sawit Terhadap Penyerapan Logam Berat Kadmium (Cd) Dan Tembaga (Cu) Pada Air Asam Tambang

2020 ◽  
Vol 16 (2) ◽  
pp. 216
Author(s):  
Irwansyah Noor ◽  
Bambang Joko Priatmadi ◽  
Fatmawati Fatmawati ◽  
Kissinger Kissinger
Keyword(s):  
Heavy Metal ◽  
Acid Mine Drainage ◽  
Effective Dose ◽  
Palm Oil ◽  
Activated Charcoal ◽  
Mine Drainage ◽  
Metal Adsorption ◽  
Heavy Metal Adsorption ◽  
Acid Mine ◽  
Randomized Design

One of the solutions for solving the acid mine drainage problem of heavy metal like cadmium (Cd) and cooper (Cu) is by using activated charcoal from palm oil shell and activating H3PO4 to enlarge pores of charcoal surface, then it can adsorp maximum amount of heavy metal. The purposes of this research are for analyzing the characteristic of activated charcoal from palm oil shell by activating H3PO4, analyzing the effect of applicated charcoal with or without activating H3PO4 for heavy metal like Cd, Cu and pH in acid mine drainage, and analyzing the variations of the most effective dose of heavy metal adsorption like Cd, Cu and pH enhancement. This research using the experiment method for testing the ability of activated charcoal from palm oil shell for cadmium (Cd) and cooper (Cu) heavy metal adsorption in acid mine drainage using Completely Randomized Design Non Factorial using one factor of treatment and difference of activated charcoal doses are 5 g, 10 g, 20 g dan 30 g with three times of repetitions. The result of this research showing that the characteristic of charcoal from palm oil shell can be used as an ingredient for making the activated charcoal that fulfill the quality of activated charcoal accordance with the standart of SNI 06-3730-95, the application of activated charcoal from palm oil shell by activating H3PO4 which iseffected for Cd and Cu heavy metal and pH of acid mine drainage, the application of activated charcoal from palm oil shell with or without activating H3PO4 is effected for pH of acid mine drainage with a little difference that activated charcoal has better result than the unactivated charcoal, and the most effective dose of variations of activated charcoal by using H3PO4 is 5 g for adsorpting Cd and Cu and the most effective dose for enhancing pH is 30 g.

scholarly journals Recent developments in materials used for the removal of metal ions from acid mine drainage

2021 ◽  
Vol 11 (2) ◽  
Author(s):  
Tebogo M. Mokgehle ◽  
Nikita T. Tavengwa
Keyword(s):  
Heavy Metal ◽  
Surface Water ◽  
Acid Mine Drainage ◽  
Metal Ions ◽  
Mine Drainage ◽  
Acid Mine ◽  
Adsorption Capacities ◽  
Ion Imprinted ◽  
Wide Range ◽  
Ion Imprinted Polymers

AbstractAcid mine drainage is the reaction of surface water with sub-surface water located on sulfur bearing rocks, resulting in sulfuric acid. These highly acidic conditions result in leaching of non-biodegradeable heavy metals from rock which then accumulate in flora, posing a significant environmental hazard. Hence, reliable, cost effective remediation techniques are continuously sought after by researchers. A range of materials were examined as adsorbents in the extraction of heavy metal ions from acid mine drainage (AMD). However, these materials generally have moderate to poor adsorption capacities. To address this problem, researchers have recently turned to nano-sized materials to enhance the surface area of the adsorbent when in contact with the heavy metal solution. Lately, there have been developments in studying the surface chemistry of nano-engineered materials during adsorption, which involved alterations in the physical and chemical make-up of nanomaterials. The resultant surface engineered nanomaterials have been proven to show rapid adsorption rates and remarkable adsorption capacities for removal of a wide range of heavy metal contaminants in AMD compared to the unmodified nanomaterials. A brief overview of zeolites as adsorbents and the developent of nanosorbents to modernly applied magnetic sorbents and ion imprinted polymers will be discussed. This work provides researchers with thorough insight into the adsorption mechanism and performance of nanosorbents, and finds common ground between the past, present and future of these versatile materials.

Removal of Cu, Ni, Zn, Cd and Pb in Artificial Acid Mine Drainage by Modified Oxygen Releasing Compounds

2014 ◽  
Vol 535 ◽  
pp. 758-763 ◽  
Author(s):  
Si Min Liu ◽  
Yu Long Liu ◽  
Jia Yu Song ◽  
Hao Deng
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Acid Mine Drainage ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Mine Drainage ◽  
Main Ingredient ◽  
Removal Rates ◽  
Acid Mine ◽  
Pb Ions

The aim of the study is to investigate removal of Cu, Ni, Zn, Cd and Pb in acid mine drainage (AMD) using modified oxygen releasing compounds (MORCs) of which CaO2 is the main ingredient. When the MORCs are placed into AMDs, OH- will be released gently and continuously which can neutralize H+ and precipitate heavy metal ions as hydroxide/carbonates. Four types of artificial AMDs contained Cu, Ni, Zn, Cd and Pb ions with/without sulfate were prepared in the laboratory. The removal rates of the heavy metals were measured after adding MORCs to the artificial AMDs. The results showed that the removal rates of Cu, Ni, Zn, Cd and Pb in all 4 artificial AMDs, after 72 hours, are more than 97%, even to 100%. However, after 96 hours, Cu, Ni, Zn, Cd and Pb deposits can be re-dissolved by 16.4%, 11.2%, 7.0%, 5.0% and 4.8%, respectively, in the single-metal artificial AMDs; Pb and Cd deposits are more stable. Sulfate in the multi-metal artificial AMD hardly has effects on re-dissolution of the heavy metal deposits; and only Ni deposits in the single-metal AMD with sulfate and Cu deposits in the single-metal AMD without sulfate are re-dissolved significantly. It suggested that the MORCs should be an efficient material to remove Cu, Ni, Zn, Cd and Pb from AMDs after 72 hours than lime or limestone.

scholarly journals Adsorption Kinetics of Fe and Mn with Using Fly Ash from PT Semen Baturaja in Acid Mine Drainage

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Indah Purnamasari ◽  
Endang Supraptiah
Keyword(s):  
Heavy Metal ◽  
Fly Ash ◽  
Acid Mine Drainage ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Mine Drainage ◽  
Coal Fly Ash ◽  
Adsorption Model ◽  
Acid Mine ◽  
Fe And Mn

One used method to reduce heavy metal ions in acid mine drainage is to adsorb them by coal fly ash. This research aimed to study the isotherms equilibrium and the adsorpstion kinetics that fit with decreasing metals ion. Acid mine draigane and fly ash were charge into batch coloumn adsorption with specified comparison. Variables investigated were dactivated and activated fly ash, adsorption times (0, 20, 30, 40,50, and 60 minutes), adsorben weights (10, 20, 30, 40, 50, and 60 gram), and pH (1, 3, 5, 7, and 9). The results showed that fly ash can be used to reduce the levels of heavy metal ions Fe and Mn. Coal fly ash adsorption model of acid mine drainage fits to Freundlich adsorption isotherm in all condition. First order pseudo model kinetics is suitable for Fe and Mn adsorption processes. The value of adsorpsi rate constants vary around : Fe and Mn (deactivated fly ash) 0.2388 min-1 with R2 = 0.4455 and 0.4173 min-1 with R2 = 0.9781, Fe and Mn (activated fly ash) 0.5043 min-1 dengan R2 = 1 and 0.2027 min-1 with R2 = 0.8803.

scholarly journals Polymeric ion exchanger supported ferric oxide nanoparticles as adsorbents for toxic metal ions from aqueous solutions and acid mine drainage

2019 ◽  
Vol 17 (2) ◽  
pp. 719-730 ◽  
Author(s):  
Caroline Lomalungelo Dlamini ◽  
Lueta-Ann De Kock ◽  
Kebede Keterew Kefeni ◽  
Bhekie Brilliance Mamba ◽  
Titus Alfred Makudali Msagati
Keyword(s):  
Acid Mine Drainage ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Ferric Oxide ◽  
Mine Drainage ◽  
Toxic Metal ◽  
Ion Exchanger ◽  
Oxide Nanoparticles ◽  
Toxic Metal Ions ◽  
Acid Mine

scholarly journals Grafting chelating groups on 2D carbon for selective heavy metal adsorption

2021 ◽  
Author(s):  
Yuta Nishina ◽  
Kazuhide Kamiya ◽  
Risa Shibahara
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Iminodiacetic Acid ◽  
Metal Adsorption ◽  
Tridentate Ligand ◽  
Heavy Metal Adsorption ◽  
Two Dimensional ◽  
Chelating Groups ◽  
Chelate Rings

Iminodiacetic acid (IDA) is a tridentate ligand, which can capture metal ions by forming two fused five-membered chelate rings. In this study, we fixed IDA moieties onto a two-dimensional nanocarbon,...

Regeneration of chitosan-based adsorbents used in heavy metal adsorption: A review

2019 ◽  
Vol 224 ◽  
pp. 373-387 ◽  
Author(s):  
Mohammadtaghi Vakili ◽  
Shubo Deng ◽  
Giovanni Cagnetta ◽  
Wei Wang ◽  
Pingping Meng ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Adsorption ◽  
Heavy Metal Adsorption
Sign in / Sign up

Export Citation Format

Share Document