Unveiling the adsorption mechanism of zeolitic imidazolate framework-8 with high efficiency for removal of copper ions from aqueous solutions

2016 ◽  
Vol 45 (32) ◽  
pp. 12653-12660 ◽  
Author(s):  
Yujie Zhang ◽  
Zhiqiang Xie ◽  
Zhuqing Wang ◽  
Xuhui Feng ◽  
Ying Wang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Aqueous Solutions ◽  
Adsorption Mechanism ◽  
High Efficiency ◽  
Copper Ions ◽  
Zeolitic Imidazolate Framework ◽  
Heavy Metal Wastewater

Here we experimentally unveil the adsorption mechanism of Cu2+ by using zeolitic imidazolate framework-8 (ZIF-8) for its application in heavy metal wastewater treatment.

scholarly journals The performance of wastewater treatment by two-species immobilized lignin-degrading mycelial pellet GX-1310

2020 ◽  
Vol 26 (4) ◽  
pp. 200254-0
Author(s):  
Gaijuan GUO ◽  
Wei GUO ◽  
Xia DU ◽  
Qie FENG ◽  
Jinda LI ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Fungal Mycelium ◽  
Dye Wastewater ◽  
Mycelial Pellet ◽  
Heavy Metal Wastewater ◽  
Degrading Bacteria ◽  
Wide Range ◽  
Papermaking Wastewater

This study found a new type of immobilized mycelial pellet GX-1310, which can better treat industrial wastewater. Among them, Aspergillus fumigatus G-13 (degradable lignin) was combined with Bacillus cereus X10-1-2 (having the ability to produce cellulase), and the two synergistically produce strong degradation ability. Taking combined mycelial pellet as the research object, its ability to treat papermaking wastewater, heavy metal wastewater and dye wastewater was investigated. The combined mycelial pellet was superior to the single fungal mycelium in the degradation of lignocellulose, removal of heavy metal ions and adsorption capacity of dyes. And the combined mycelial pellet has a wide range of application conditions (temperature range 28-34°C and pH range 4-8), which can maintain high processing capacity for papermaking wastewater, heavy metal wastewater and dye wastewater. After three batches of wastewater treatment, the combined mycelial pellet still maintains high activity and can continuously treat wastewater. The study fixed the single fungal mycelium together with cellulose-degrading bacteria, the strains producing different enzymes were combined to form a multi-functional combined mycelial pellet. This method provides a new way for industrial wastewater treatment.

SORPTION MATERIALS BASED ON ALKALI-INSOLUBLE COMPONENTS PEAT AND BROWN COAL FOR WASTEWATER TREATMENT FROM IONS OF HEAVY METAL

2021 ◽  
pp. 175-186
Author(s):  
Natalia S. Pershay ◽  
Yuriy G. Yanuta
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Wastewater Treatment ◽  
Metal Ions ◽  
Organic Compounds ◽  
Brown Coal ◽  
Heavy Metal Ions ◽  
Copper Ions ◽  
Exchange Capacity ◽  
Water Soluble

The problem of environmental pollution with heavy metals is relevant for the Republic of Belarus. One of the ways to remove heavy metals from industrial wastewater is to treat them with sorbents. Sorbents based on peat and brown coal are effective and inexpensive, but their use leads to secondary contamination of the treated environment with water-soluble organic compounds. It is shown that the developed sorption materials based on peat and brown coal residues sorb heavy metal ions (copper, nickel, zinc) and do not pollute the treated medium with water-soluble organic compounds (the COС value of sorption materials does not exceed 5 mg O2/dm3). It was found that the exchange capacity of sorption materials in an acidic medium (pH 2.0) is higher than that of humic acids and is in the range of 0.17–1.38 mmol/g. The use of ultrasonic treatment to increase the exchange capacity of sorption materials makes it possible to increase it by 2.3–3.0 times for copper ions and 2.2 times for zinc ions, which is due to the destruction of large aggregates. The obtained results formed the basis for the development of a technology for obtaining sorption materials for wastewater treatment from heavy metal ions.

Abiological Granular Sludge Formation Benefit for Heavy Metal Wastewater Treatment Using Sulfide Precipitation

2017 ◽  
Vol 45 (4) ◽  
pp. 1500730 ◽  
Author(s):  
Xu Yan ◽  
Liyuan Chai ◽  
Qingzhu Li ◽  
Lijun Ye ◽  
Bentao Yang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Granular Sludge ◽  
Sludge Formation ◽  
Heavy Metal Wastewater ◽  
Sulfide Precipitation
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