scholarly journals Immobilization of laccase on magnetically separable biochar for highly efficient removal of bisphenol A in water

RSC Advances ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 4795-4804 ◽  
Author(s):  
Yu Zhang ◽  
Mingyue Piao ◽  
Lingzhi He ◽  
Lan Yao ◽  
Tiezhu Piao ◽  
...  

Laccase was stably immobilized on a cost effective and nanosized magnetic biochar (L-MBC) by adsorption, precipitation and crosslinking, and it was used for high performance BPA removal.

Materials ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 704 ◽  
Author(s):  
Mingyue Piao ◽  
Donglei Zou ◽  
Yuesuo Yang ◽  
Xianghao Ren ◽  
Chuanyu Qin ◽  
...  

Hghly stable, reusable, and multi-functional biocatalytic microparticles with Laccase (Lac) enzyme (Lac/particles) were synthesized for bisphenol A (BPA) removal from aqueous solution. The Lac/particles were prepared by encapsulating Lac enzymes into poly ethylene glycol (PEG) hydrogel via the UV assisted emulsion polymerization method followed by cross linking with glutaraldehyde (GA). The obtained Lac/particles were spherical and micron sized (137–535 μm), presenting high enzyme entrapment efficiency of 100%, high activity recovery of 18.9%, and great stability at various pHs (3–7) than the free Lac. The Lac/particles could adsorb the BPA into the catalytic particles in a short time, promoting contact between BPA and enzyme, and further enzymatically degrade them without the shaking process and independent surrounding buffer solution. The Lac/particles could be reused for another round BPA adsorption and biotranformation by maintaining over 90% of BPA removal efficiency after seven times reuse. The synergistic effects of adsorption and biocatalytical reaction of Lac/particles have significant values in high efficient and cost-effective BPA removal.


ACS Omega ◽  
2018 ◽  
Vol 3 (9) ◽  
pp. 11663-11672 ◽  
Author(s):  
Yagui Gao ◽  
Rong Guo ◽  
Yao Feng ◽  
Lexin Zhang ◽  
Cuiru Wang ◽  
...  

Catalysts ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 240 ◽  
Author(s):  
Xiaofei Liu ◽  
Yanglong Guo ◽  
Wangcheng Zhan ◽  
Tian Jin

The development of scalable hydrogen production technology to produce hydrogen economically and in an environmentally friendly way is particularly important. The hydrogen evolution reaction (HER) is a clean, renewable, and potentially cost-effective pathway to produce hydrogen, but it requires the use of a favorable electrocatalyst which can generate hydrogen with minimal overpotential for practical applications. Up to now, ruthenium phosphide Ru2P has been considered as a high-performance electrocatalyst for the HER. However, a tedious post-treatment method as well as large consumption of solvents in conventional solution-based synthesis still limits the scalable production of Ru2P electrocatalysts in practical applications. In this study, we report a facile and cost-effective strategy to controllably synthesize uniform ultrasmall Ru2P nanoparticles embedded in carbon for highly efficient HER. The key to our success lies in the use of a solid-state ball milling-assisted technique, which overcomes the drawbacks of the complicated post-treatment procedure and large solvent consumption compared with solution-based synthesis. The obtained electrocatalyst exhibits excellent Pt-like HER performance with a small overpotential of 36 mV at current density of 10 mA cm−2 in 1 M KOH, providing new opportunities for the fabrication of highly efficient HER electrocatalysts in real-world applications.


RSC Advances ◽  
2020 ◽  
Vol 10 (17) ◽  
pp. 9976-9984 ◽  
Author(s):  
Wenhua Tong ◽  
Yi Xie ◽  
Wanrong Hu ◽  
Yuanyuan Peng ◽  
Wenbin Liu ◽  
...  

Cost-effective and environmentally benign biomass precursor enabled synthesis of CoP/N-doped porous carbon nanocomposite for BPA removal through adsorption and peroxymonosulfate activation.


2017 ◽  
Vol 5 (17) ◽  
pp. 7999-8009 ◽  
Author(s):  
Yao Lu ◽  
Hailei Zhao ◽  
Kui Li ◽  
Xuefei Du ◽  
Yanhui Ma ◽  
...  

A highly efficient and cost-effective strategy for doping Ca at the B-site of BaFeO3−δ was demonstrated to enhance oxygen permeability.


2014 ◽  
Vol 6 (20) ◽  
pp. 17352-17357 ◽  
Author(s):  
Yuri Choi ◽  
Sihyuk Choi ◽  
Hu Young Jeong ◽  
Meilin Liu ◽  
Byeong-Su Kim ◽  
...  

2018 ◽  
Vol 347 ◽  
pp. 78-88 ◽  
Author(s):  
Małgorzata Norman ◽  
Sonia Żółtowska-Aksamitowska ◽  
Agnieszka Zgoła-Grześkowiak ◽  
Hermann Ehrlich ◽  
Teofil Jesionowski

2021 ◽  
pp. 125184
Author(s):  
Piyatida Thaveemas ◽  
Laemthong Chuenchom ◽  
Sulawan Kaowphong ◽  
Supanna Techasakul ◽  
Patchareenart Saparpakorn ◽  
...  

Author(s):  
Olcayto Keskinkan ◽  
Behzat Balci

AbstractThis study was carried out to investigate the potential ofPseudomonas aeruginosafor the removal of bisphenol-A (BPA) from synthetic wastewater. To achieve this, BPA removal capability ofP. aeruginosawith respect to BPA concentration, and temperature were examined in batch reactors. Experiments were conducted in the presence/absence of glucose, as a carbon source. The first set of experiments consisted of evaluating the kinetic of removal of BPA at different concentrations (5, 10, 20, and 30 mg BPA/L) without glucose. In the second set of experiments, three different glucose concentrations (0.5, 1.0, and 2.0 glucose/L) with BPA concentrations were tested. After settlement of theP. aeruginosabiomass in the shakers, supernatants and control groups were filtered and analyzed for BPA using high performance liquid chromatography. In the biotic study, BPA removal rates were between 63 % and 100 %. All concentrations of BPA under 20 mg/L were completely degraded at 25 and 35 ºC at first step. However, 30 mgBPA/L was decreased to 8.56 mg/L byP. aeruginosaat first step at 25 ºC. At the second step, all concentrations of BPA were completely degraded by the cells at the presence of glucose. Hence, it can be summarized that bisphenol A can be used byP. aeruginosaas an external carbon source in the wastewater environments.


Sign in / Sign up

Export Citation Format

Share Document