Recovering Nutrients from Waste Black Water Through Multi-Functional Mesoporous Silica

2021 ◽  
Vol 21 (9) ◽  
pp. 4936-4940
Author(s):  
Eun-Sik Kim ◽  
Wang Geun Shim ◽  
Jeongmin Cha ◽  
Min-Jin Hwang
Keyword(s):  
Wastewater Treatment ◽  
Mesoporous Silica ◽  
Magnetic Force ◽  
Nanoporous Silica ◽  
Nutrient Recovery ◽  
Black Water ◽  
Adsorption Capacities ◽  
Silica Adsorbents ◽  
Silica Materials ◽  
Harmful Effects

In order to prevent the harmful effects in water phase such as eutrophication, industrial and urban sewages must be treated before discharging into the aquatic environment. In this work, amine grafted magnetic nanoporous silica materials are synthesized and applied as an adsorbent for the recovery of nutrients from waste black water. The magnetic force could separate the surface func-tionalized nanoporous silica materials from aqueous medium after treatment, and showed the higher adsorption capacity of nutrients than that of the original mesoporous silica. The multi-functional nanoporous silica adsorbents were effectively removed phosphate and nitrate at 20 °C with the maximum adsorption capacities of 42.5 and 34.9 mg/g, respectively. The overall results indicated that the synthesized multi-functional nanoporous silica sorbents can be a candidate material for the nutrient recovery in wastewater treatment system.

Exergy analysis of nutrient recovery processes

2003 ◽  
Vol 48 (1) ◽  
pp. 27-36 ◽  
Author(s):  
D. Hellström
Keyword(s):  
Wastewater Treatment ◽  
Exergy Analysis ◽  
Chemical Elements ◽  
Source Separation ◽  
Chemical Processes ◽  
Nutrient Recovery ◽  
Black Water ◽  
Recovery Processes ◽  
Exergy Consumption ◽  
Physical And Chemical

In an exergy analysis, the actual consumption of resources in physical and chemical processes is calculated. Energy and chemical elements are not consumed in the processes - they are only transformed into other forms with lower quality. The principals of exergy analysis are illustrated by comparing different wastewater treatment systems for nutrient recovery. One system represents an end-of-pipe structure, whereas other systems include source separation of grey water, black water, and urine. The exergy flows analysed in this paper are those related to management and treatment of organic matter and nutrients. The study shows that the total exergy consumption is lowest for the system with source separation of urine and faeces and greatest for the conventional wastewater treatment system complemented by processes for nutrient recovery.

scholarly journals Mechanisms and Intermediates in the True Liquid Crystal Templating Synthesis of Mesoporous Silica Materials

2021 ◽  
Vol 125 (12) ◽  
pp. 3197-3207
Author(s):  
Johanna R. Bruckner ◽  
Jessica Bauhof ◽  
Jacqueline Gebhardt ◽  
Ann-Katrin Beurer ◽  
Yvonne Traa ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Mesoporous Silica ◽  
Silica Materials ◽  
Mesoporous Silica Materials ◽  
Liquid Crystal Templating ◽  
Templating Synthesis

scholarly journals Broad diversity of bacteria degrading 17ß-estradiol-3-sulfate isolated from river sediment and biofilm at a wastewater treatment plant discharge

2021 ◽  
Author(s):  
Tamara Mainetti ◽  
Marilena Palmisano ◽  
Fabio Rezzonico ◽  
Blaž Stres ◽  
Susanne Kern ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
River Sediment ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Aquatic Environments ◽  
Bacterial Isolates ◽  
Degrading Bacteria ◽  
17Β Estradiol ◽  
Aquatic Wildlife ◽  
Harmful Effects

AbstractConjugated estrogens, such as 17β-estradiol-3-sulfate (E2-3S), can be released into aquatic environments through wastewater treatment plants (WWTP). There, they are microbiologically degraded into free estrogens, which can have harmful effects on aquatic wildlife. Here, the degradation of E2-3S in environmental samples taken upstream, downstream and at the effluent of a WWTP was assessed. Sediment and biofilm samples were enriched for E2-3S-degrading microorganisms, yielding a broad diversity of bacterial isolates, including known and novel degraders of estrogens. Since E2-3S-degrading bacteria were also isolated in the sample upstream of the WWTP, the WWTP does not influence the ability of the microbial community to degrade E2-3S.

Fl–DFO molecules@mesoporous silica materials: Highly sensitive and selective nanosensor for dosing with iron ions

2011 ◽  
Vol 358 (1) ◽  
pp. 136-145 ◽  
Author(s):  
Bao-Lian Su ◽  
Nicolas Moniotte ◽  
Noan Nivarlet ◽  
Li-Hua Chen ◽  
Zheng-Yi Fu ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Iron Ions ◽  
Highly Sensitive ◽  
Silica Materials ◽  
Mesoporous Silica Materials

Monolithic Macroporous-Mesoporous Carbon Using Ionic Liquids as Carbon Source

2014 ◽  
Vol 988 ◽  
pp. 23-26
Author(s):  
Ai Bing Chen ◽  
Yun Hong Yu ◽  
Yi Feng Yu ◽  
Hai Jun Lv ◽  
Ting Ting Xing ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Carbon Source ◽  
Mesoporous Silica ◽  
Mesoporous Carbon ◽  
Structure Directing Agent ◽  
Silica Source ◽  
Pu Foam ◽  
Silica Materials ◽  
Mesoporous Silica Materials ◽  
Ordered Macroporous

A facile approach is employed for the preparation of hierarchically porous structures monolithic ordered macroporous-mesoporous silica materials (OMS) using the commercially available and cheap polyurethane (PU) foam as monolithic template, triblock copolymer P123 (EO20PO70EO20) as structure-directing agent and tetraethyl orthosilicate (TEOS) as silica source, then monolithic ordered macro porous-mesoporous carbon materials (OMC) is synthesized by using monolithic ordered macroporous-mesoporous silica materials as hard template and ionic liquids as the carbon source. The silica and carbon monoliths possess uniform pore sizes (3.74-3.84 nm) and ordered mesostructure.

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