Xu, Yaxian Chen, Nan Feng, Chuanping Hao, Chunbo Peng, Tong
Published in
Environmental technology
Eggshell is considered to be a waste and a significant quantity of eggshell waste is generated from food processing, baking and hatching industries. In this study, the effect of different sulfur/eggshell (w/w) ratios and temperatures was investigated to evaluate the feasibility of the sulfur-based autotrophic denitrification with eggshell (SADE) pr...
Chen, Yi-Rong
Published in
Environmental technology
The aim of this study is to explore catalytic microwave pyrolysis of crude oil storage tank sludge for fuels using granular activated carbon (GAC) as a catalyst. The effect of GAC loading on the yield of pyrolysis products was also investigated. Heating rate of oily sludge and yield of microwave pyrolysis products such as oil and fuel gas was found...
Son, Dong-Jin Yun, Chan-Young Kim, Woo-Yeol Zhang, Xing-Ya Kim, Dae-Gun Chang, Duk Sunwoo, Young Hong, Ki-Ho
Published in
Environmental technology
The pre-denitrification biofilm process for nitrogen removal was combined with ceramic membrane with pore sizes of 0.05-0.1 µm as a system for advanced post-treatment of municipal wastewater. The system was operated under an empty bed hydraulic retention time of 7.8 h, recirculation ratio of 3, and transmembrane pressure of 0.47 bar. The system sho...
Liu, Yunlei Chen, Jian Lu, Shaonan Yang, Libo Qian, Jiazhong Cao, Shuqing
Published in
Environmental technology
Heavy metal contamination of water is an increasing environmental problem worldwide, and the use of aquatic plants for phytoremediation of heavy metal pollution has become an important subject of research. One key to successful phytoremediation is the identification of plants that are efficient at sequestering heavy metals. In this study, we examin...
Xie, En Ding, Aizhong Zheng, Lei Dou, Junfeng Anderson, Bruce Huang, Xiaolong Jing, Ruoting
Published in
Environmental technology
Denitrifying phosphorus-accumulating organisms (DNPAO) are viewed as one of the most effective means to solve the removal contradiction of nitrogen and phosphorus in wastewater treatment. In this study, we isolated a DNPAO (C-17, accession number: KU745702) from activated sludge in a patented circular plug-flow reactor, physiologically to Pseudomon...
Nag, Mitali Shimaoka, Takayuki Komiya, Teppei
Published in
Environmental technology
Landfill aeration can accelerate the biological degradation of organic waste and reduce methane production; however, it induces nitrous oxide (N2O), a potent greenhouse gas. Nitrification is one of the pathways of N2O generation as a by-product during aerobic condition. This study was initiated to demonstrate the features of N2O production rate fro...
Hudayah, N Suraraksa, B Chaiprasert, P
Published in
Environmental technology
Concomitant early granulation with chitosan addition under a syntroph-specific substrate and enhancement of extracellular polymeric substances (EPS) production were aimed at to build anaerobic granules with high syntrophic activities in a short period. Two laboratory-scale upflow anaerobic sludge blanket reactors were operated as control (R1) and c...
Gold, Moritz Dayer, Pauline Faye, Marie Christine Amie Sene Clair, Guillaume Seck, Alsane Niang, Seydou Morgenroth, Eberhard Strande, Linda
Published in
Environmental technology
In urban areas of low-income countries, treatment of faecal sludge (FS) is insufficient or non-existent. This results in large amounts of FS being dumped into the environment. Existing treatment technologies for FS, such as settling-thickening tanks and drying beds, are land intensive which is limiting in urban areas. Enhanced settling and dewateri...
Hamad, Dina Dhib, Ramdhane Mehrvar, Mehrab
Published in
Environmental technology
The performance of batch and fed-batch photoreactors with that of continuous photoreactor for the treatment of aqueous polyvinyl alcohol (PVA) solutions is compared. Hydrogen peroxide feeding strategies, residence time, and [H2O2]/[PVA] mass ratio are examined for their impacts on the molecular weight distribution (MWD) of PVA and the total organic...
Naidu, Gedela Ashok Kumar Gupta, Smita Chakraborty, Mousumi
Published in
Environmental technology
The extraction of p-nitrophenol (PNP) from aqueous solutions through a pseudo-emulsion hollow fiber strip dispersion (PEHFSD) system was conducted in a microporous hydrophobic polypropylene hollow fiber membrane contactor. For the optimization of the process variables, face-centered central composite design (FCCD) has been used. It was observed tha...
