A new type three-stage gasification of dried sewage sludge: Effects of equivalence ratio, weight ratio of activated carbon to feed, and feed rate on gas composition and tar, NH 3 , and H 2 S removal and results of approximately 5 h gasification

Energy ◽  
2017 ◽  
Vol 118 ◽  
pp. 139-146 ◽  
Author(s):  
Young-Kon Choi ◽  
Ji-Ho Ko ◽  
Joo-Sik Kim
Keyword(s):  
Activated Carbon ◽  
Sewage Sludge ◽  
Feed Rate ◽  
Equivalence Ratio ◽  
Weight Ratio ◽  
Gas Composition ◽  
New Type

ESEM - A multipurpose surface Electron Microscope

1986 ◽  
Vol 44 ◽  
pp. 632-633 ◽  
Author(s):  
G.D. Danilatos
Keyword(s):  
Electron Microscope ◽  
Room Temperature ◽  
Environmental Scanning ◽  
Gas Composition ◽  
Saturated Water Vapor ◽  
Surface Electron ◽  
Current State ◽  
Saturated Water ◽  
New Type ◽  
Temperature And Pressure

Over recent years a new type of electron microscope - the environmental scanning electron microscope (ESEM) - has been developed for the examination of specimen surfaces in the presence of gases. A detailed series of reports on the system has appeared elsewhere. A review summary of the current state and potential of the system is presented here.The gas composition, temperature and pressure can be varied in the specimen chamber of the ESEM. With air, the pressure can be up to one atmosphere (about 1000 mbar). Environments with fully saturated water vapor only at room temperature (20-30 mbar) can be easily maintained whilst liquid water or other solutions, together with uncoated specimens, can be imaged routinely during various applications.

Analisis Variasi Temperatur Aktivasi Terhadap Daya Serap Arang Aktif Tandan Aren (Arenga Pinnata Merr) Dengan Agen Aktivasi Potassium Silicate(K2SiO3)

2020 ◽  
Vol 5 (3) ◽  
pp. 221
Author(s):  
Muhammad Azam ◽  
Muhammad Anas ◽  
Erniwati Erniwati
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Adsorption Capacity ◽  
Temperature Variation ◽  
Chemical Activation ◽  
Weight Ratio ◽  
Potassium Silicate ◽  
Physical Activation ◽  
Activation Temperature ◽  
Pyrolysis Reactor

This study aims to determine the effect of variation of activation temperature of activated carbon from sugar palm bunches of chemically activatied with the activation agent of potassium silicate (K2SiO3) on the adsorption capacity of iodine and methylene blue. Activated carbon from bunches of sugar palmacquired in four steps: preparationsteps, carbonizationstepsusing the pyrolysis reactor with temperature of 300 oC - 400 oC for 8 hours and chemical activation using of potassium silicate (K2SiO3) activator in weight ratio of 2: 1 and physical activation using the electric furnace for 30 minutes with temperature variation of600 oC, 650 oC, 700 oC, 750 oC and 800 oC. The iodine and methyleneblue adsorption testedby Titrimetric method and Spectrophotometry methodrespectively. The results of the adsorption of iodine and methylene blue activated carbon from sugar palm bunches increased from 240.55 mg/g and 63.14 mg/g at a temperature of 600 oC to achieve the highest adsorption capacity of 325.80 mg/g and 73.59 mg/g at temperature of 700 oC and decreased by 257.54 mg/g and 52.03 mg/g at a temperature of 800 oCrespectively.However, it does not meet to Indonesia standard (Standard Nasional Indonesia/SNI), which is 750 mg/g and 120 mg/g respectively.

Defluorination and regeneration study of lanthanum-doped sewage sludge-based activated carbon

2021 ◽  
pp. 105740
Author(s):  
Yujian Zhang ◽  
Lizhi He ◽  
Guoqiao Wang ◽  
Xinxin Zhang ◽  
Ya Liu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Sewage Sludge ◽  
Regeneration Study

scholarly journals Preparation and characterization of activated carbon from sewage sludge: carbonization step

2004 ◽  
Vol 49 (1) ◽  
pp. 139-146 ◽  
Author(s):  
S. Rio ◽  
C. Faur-Brasquet ◽  
L. Le Coq ◽  
D. Lecomte ◽  
P. Le Cloirec
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Sewage Sludge ◽  
Thermal Treatment ◽  
Wastewater Treatment Plants ◽  
Carbonization Temperature ◽  
Carbon Production ◽  
By Products ◽  
Characterization Of Activated Carbon

Sewage sludges produced from wastewater treatment plants continue to create environmental problems in terms of volume and method of valorization. Thermal treatment of sewage sludge is considered as an attractive method in reducing sludge volume which at the same time produces reusable by-products. This paper deals with the first step of activated carbon production from sewage sludge, the carbonization step. Experiments are carried out on viscous liquid sludge and limed sludge by varying carbonization temperature and heating rate. The results show that carbonized residue properties are interesting for activated carbon production.

Efficient electrochemical incineration of phenol on activated carbon fiber as a new type of particulates

2014 ◽  
Vol 50 (6) ◽  
pp. 569-578 ◽  
Author(s):  
Lei Ma ◽  
Chenglin Sun ◽  
Jian Ren ◽  
Huangzhao Wei ◽  
Peijuan Liu
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Activated Carbon Fiber ◽  
New Type ◽  
Electrochemical Incineration

Simultaneous Removal of SO2 and NO with Activated Carbon from Sewage Sludge Modified by Chitosan

2012 ◽  
Vol 253-255 ◽  
pp. 960-964 ◽  
Author(s):  
Xiao Dan Fan ◽  
Xiang Kai Zhang
Keyword(s):  
Activated Carbon ◽  
Sewage Sludge ◽  
Active Sites ◽  
Operating Conditions ◽  
Competitive Sorption ◽  
Simultaneous Removal ◽  
No Removal ◽  
Adsorption Capacities ◽  
So2 Adsorption ◽  
Removal Of So2

The simultaneous removal of SO2 and NO was investigated with the activated carbon from sewage sludge (referred as ACS) modified by chitosan (referred as CS).The effects of CS loading and operating conditions on the simultaneous removal of SO2 and NO were analyzed. The results indicate that compared with the ACS, impregnating CS results in significant increase in SO2 or NO removal. Relative humidity enhances SO2 adsorption capacities, but not for NO. The SO2 adsorption capacities of the CS / ACS show no obvious decrease at small amount of NO in the feed. However, higher amounts of NO reduce the SO2 adsorption capacities. The opposite phenomenon appears for NO when a small amount of SO2. So a competitive sorption consists between NO and SO2. Simultaneous adsorptions for NO and SO2 is due to more active sites from CS.

Sign in / Sign up

Export Citation Format

Share Document