Results 231 to 240 of about 87,639 (320)

Mechanistic insights into the efficient activation of peracetic acid by pyrite for the tetracycline abatement.

Water Research, 2022
Recently, iron-based heterogenous catalysts have received much attention in the activation of peracetic acid (PAA) for generating reactive radicals to degrade organic pollutants, yet the PAA activation efficiency is compromised by the slow transformation
Danying Xing, Shujing Shao, Yuyan Yang, Zuo-Ming Zhou, Guohua Jing, Xiao-Dan Zhao   +5 more
semanticscholar   +1 more source

Vertical-flow constructed wetland based on pyrite intensification: Mixotrophic denitrification performance and mechanism.

Bioresource Technology, 2022
Deep nitrogen removal from low-carbon wastewater is a pressing water treatment challenge as of yet. Eight sets of vertical-flow constructed wetland (VFCW) intensified by pyrite were designed and applied to treat with low C/N ratio wastewater in this ...
Yifan Chu, Wei Liu, Qiyang Tan, Ling-Li Yang, Jinmei Chen, Lin Ma, Yi Zhang, Zhen-Bing Wu, F. He   +8 more
semanticscholar   +1 more source

High efficient bio-denitrification of nitrate contaminated water with low ammonium and sulfate production by a sulfur/pyrite-based bioreactor.

Bioresource Technology, 2022
Sulfur-based autotrophic denitrification (SAD) and pyrite-based autotrophic denitrification (PAD) are important technologies that address nitrate pollution, but high sulfate production and low denitrification efficiency, respectively, limit their ...
Xiao-Yu Chen, Lei Yang, Fei Chen, Qinan Song, Chuan-Ping Feng, Xiang Liu, Miao Li   +6 more
semanticscholar   +1 more source

Removal of Microcystis aeruginosa by natural pyrite-activated persulfate: Performance and the significance of iron species

Chemical Engineering Journal, 2022
In this study, the feasibility of removing Microcystis aeruginosa by heterogeneous persulfate activation using ubiquitous natural pyrite was investigated.
Xiao-Xian Zheng, X. Niu, Dong-Qing Zhang, Xing-Yao Ye, Jin-Ling Ma, Meng-Yuan Lv, Zhang Lin   +6 more
semanticscholar   +1 more source

Investigation into pyrite autotrophic denitrification with different mineral properties.

Water Research, 2022
Pyrite autotrophic denitrification (PAD) is considered a promising method for nitrate removal from wastewater and groundwater. However, the results of PAD studies have been contradictory for two decades, and the mechanism is unclear.
Ruihua Li, Yong-Wei Zhang, Mengshan Guan
semanticscholar   +1 more source

Study of the kinetics of pyrite oxidation under controlled redox potential

Hydrometallurgy, 2015
An experimental study of the ferric oxidation kinetics of pyrite was conducted under controlled redox potentials of 700, 800 and 900 mV (vs. SHE).
Renman Ruan, Miao Chen
exaly   +2 more sources

A novel strategy for enhancing heterogeneous Fenton degradation of dye wastewater using natural pyrite: Kinetics and mechanism.

Chemosphere, 2021
Hydrogen peroxide activation by pyrite for degradation of recalcitrant contaminants receives increasing attention. The improvement of catalytic efficiency of natural pyrite is still a challenging issue.
Chongqing Wang, Ruirui Sun, Rong Huang, Yi-Jun Cao   +3 more
semanticscholar   +1 more source

Acid mine drainage formation and arsenic mobility under strongly acidic conditions: Importance of soluble phases, iron oxyhydroxides/oxides and nature of oxidation layer on pyrite.

Journal of Hazardous Materials, 2020
Acid mine drainage (AMD) formation and toxic arsenic (As) contamination are serious environmental problems encountered worldwide. In this study, we investigated the crucial roles played by common secondary mineral phases formed during the natural ...
C. Tabelin, Ryan D. Corpuz, T. Igarashi, M. Villacorte-Tabelin, R. Alorro, Kyoungkeun Yoo, S. Raval, Mayumi Ito, N. Hiroyoshi   +8 more
semanticscholar   +1 more source

Redox Behavior of Secondary Solid Iron Species and the Corresponding Effects on Hydroxyl Radical Generation during the Pyrite Oxidation Process.

Environmental Science and Technology, 2022
During the pyrite oxidation process, aqueous ferrous/ferric ions (Fe2+/Fe3+), as well as surface-adsorbed Fe2+/Fe3+, have been widely recognized to dominate hydroxyl radical (•OH) generation, while this study reveals that the secondary solid iron species
Zhenyu Zhao, Shuai Peng, Canming Ma, Chao Yu, Deli Wu   +4 more
semanticscholar   +1 more source

Corncob-pyrite bioretention system for enhanced dissolved nutrient treatment: Carbon source release and mixotrophic denitrification.

Chemosphere, 2022
Solid biomass waste amendment and substrates modification in bioretention systems have been increasingly used to achieve effective dissolved nutrients pollution control in stormwater runoff.
Zhongshuai Weng, Haiyuan Ma, Jingchen Ma, Zheng-hong Kong, Zhiyu Shao, Yun-Song Yuan, Yanhong Xu, Qichang Ni, H. Chai   +8 more
semanticscholar   +1 more source