A combined process of activated carbon adsorption, ion exchange resin treatment and membrane concentration for recovery of dissolved organics in pre-hydrolysis liquor of the kraft-based dissolving pulp production process

2013 ◽  
Vol 127 ◽  
pp. 59-65 ◽  
Author(s):  
Jing Shen ◽  
Ishneet Kaur ◽  
Mir Mojtaba Baktash ◽  
Zhibin He ◽  
Yonghao Ni
Keyword(s):  
Activated Carbon ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Activated Carbon Adsorption ◽  
Combined Process ◽  
Carbon Adsorption ◽  
Dissolved Organics ◽  
Pulp Production ◽  
Resin Treatment ◽  
Membrane Concentration

Study on Soybean Polypeptide Refining Process

2013 ◽  
Vol 652-654 ◽  
pp. 439-442
Author(s):  
Yong Sheng Ma ◽  
Lin Tong Wang ◽  
Xian Hui Sun ◽  
Liu Ying Li ◽  
Jie Sun ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Exchange Process ◽  
Ion Exchange Resin ◽  
Ash Content ◽  
Optimal Dosage ◽  
Activated Carbon Adsorption ◽  
Cation Resin ◽  
Carbon Adsorption

Soybean polypeptide mixture was decolorized by adopting activated carbon adsorption decolourization process. Anion/cation exchange process was used in the desalination processing of soybean polypeptide. It was showed that excellent decolorizing and desalting effect to soybean peptide solution was gained in the decolourization and desalination process adopted in this experiment. Optimal dosage of activated carbon was 1.2% solution amount (w/w). After decolorizing soybean polypeptide solution color was yellow. Proportion of anion resin and cation resin of ion exchange resin was 2:3(V/V). The volume of solution processed was 5 times as the volume of anion exchange resin. After desalination processing, ash content of soybean peptide solution reduced to 2.11% (dry basis), salinity decreased by 86%, on the other hand taste of soybean polypeptide was lite.

Preparation of Oligopeptide Mixture with a High Fischer Ratio from Egg White Proteins

2011 ◽  
Vol 140 ◽  
pp. 406-410
Author(s):  
Wei Xu ◽  
Xi Bo Wang ◽  
Yu Jie Chi
Keyword(s):  
Ion Exchange ◽  
Free Amino ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Egg White ◽  
Recovery Ratio ◽  
Activated Carbon Adsorption ◽  
Egg White Protein ◽  
Carbon Adsorption ◽  
Egg White Proteins

Oligopeptide with a high Fischer ratio by protease hydrolysis from egg white was prepared. The optimal substrate concentration 5.5% and denatured time 15min were determined by nitrogen recovery ratio (NR) testing. Alcalase and enzymesⅡ were selected to hydrolyze egg white protein. The performance of ion exchange resin was chosen when flow rate of the hydrolysate was 8vol/hr. The NR of the hydrolysate was 84.01% and the desalinization ratio was 81.73% after passing ion exchange resin. Activated carbon adsorption chromatography was used to remove free AAA and the result of UV-scanning indicated that active carbon was efficient to absorb AAA. The composition analyzed results showed that the Fischer ratio of hydrolysate was 20.46 and the content of free amino acid was 8.04％. The G-25 gel filration chromatography was used to determine the molecular weight (MW) of hydrolysate and the results showed that the MW distribution of the hydrolysate with a high Fischer ratio was consecutive and it ranged from 300 to 600.

Test Study on Combined Process of Clarification-Adsorption-Membrane Separation for Chemical Agent VX Polluted Surface Water Treatment

2013 ◽  
Vol 750-752 ◽  
pp. 1457-1460
Author(s):  
Xiao Jie Wang ◽  
Hong Wei Zhang ◽  
En Feng Chen ◽  
Yun Zhe Ji
Keyword(s):  
Activated Carbon ◽  
Surface Water ◽  
Membrane Separation ◽  
Chemical Agent ◽  
Activated Carbon Adsorption ◽  
Combined Process ◽  
Surface Water Treatment ◽  
Adsorption Performance ◽  
Carbon Adsorption ◽  
Test Study

t developed test devices and carried out test adopting combined process ofclarification-adsorption-membrane separationtargeted at surface water which was polluted by chemical agent VX. Investigation on purification effects of sand filtration, microfiltration, ultrafiltration, activated carbon adsorption and reverse osmosis was implemented in sections. It also researched on working principles of each section. Furthermore, comparative study has been made for adsorption performance of coaly granular activated carbon and that of shell activated carbon. The results show that the combined process can remove effectively simulation agent in water and the outlet quality complies with requirements of relevant standards.

Study on Combined Process of Adsorption-Membrane Separation for Military Toxicant VX Polluted Municipal Water Treatment

2013 ◽  
Vol 361-363 ◽  
pp. 789-792 ◽  
Author(s):  
Xiao Jie Wang ◽  
En Feng Chen ◽  
Yun Zhe Ji
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Reverse Osmosis ◽  
Membrane Separation ◽  
Activated Carbon Adsorption ◽  
Combined Process ◽  
Effluent Quality ◽  
Adsorption Performance ◽  
Carbon Adsorption ◽  
Municipal Water

It developed test devices and carried out test adopting combined process of adsorption-membrane separation targeted at municipal water polluted by military toxicant VX. Investigation on purification effects of sand filtration, microfiltration, ultrafiltration, activated carbon adsorption and reverse osmosis was implemented in sections. It also studied on working principles of each section. Furthermore, comparative study has been made for adsorption performance of coaly granular activated carbon and that of shell activated carbon. The results show that the device can remove effectively simulation agent in water and the effluent quality complies with requirements of relevant standards.

scholarly journals Separation and characterization of lignin and sugars in the hydrolysate of hot water extraction of poplar wood by membrane filtration and activated carbon adsorption

BioResources ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. 6613-6628
Author(s):  
Guoyu Tian ◽  
Yaqi Chu ◽  
Xiaoqian Chen ◽  
Xiuhong Zhong ◽  
Zhaojiang Wang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Membrane Filtration ◽  
Hot Water ◽  
Water Extraction ◽  
Poplar Wood ◽  
Activated Carbon Adsorption ◽  
Combined Process ◽  
Hot Water Extraction ◽  
Carbon Adsorption

Hot water extraction of poplar wood was conducted at temperatures from 190 to 200 °C for 5 to 8 min. A hemicellulose yield of 81% and a lignin yield of 38% were obtained at 200 °C for 8 min. A combined process of microfiltration, ultrafiltration, and activated carbon adsorption was developed to separate lignin and sugars in the hydrolysate of hot water extraction. Lignin recovery efficiencies of 56.7%, 26.0%, and 13.2% were attained for microfiltration, ultrafiltration, and activated carbon adsorption, respectively. The characterization of lignin revealed diversity in molecular weight and functional groups, which is beneficial for high-value valorization. The obtained hemicellulose sugars from the combined process showed a good recovery rate of 43.8% and remarkable purity of 97.5%. The purified sugars were a mixture of monomers and oligomers that consisted of arabinose, galactose, xylose, glucose, and mannose. Sugar oligomers with degrees of polymerization from 2 to 6 accounted for 21.6% of all sugars.

Treatment of High-Strength, Complex and Toxic Chemical Wastewater: End-of Pipe “Best Available Technology” vs. an In-Plant Control Program

1994 ◽  
Vol 29 (8) ◽  
pp. 221-233
Author(s):  
Shimshon Belkin ◽  
Asher Brenner ◽  
Alon Lebel ◽  
Aharon Abeliovich
Keyword(s):  
Activated Carbon ◽  
Control Program ◽  
High Strength ◽  
Activated Carbon Adsorption ◽  
Acceptable Solution ◽  
Conventional Activated Sludge ◽  
Carbon Adsorption ◽  
Individual Source ◽  
Best Available Technology ◽  
Available Technology

A case study is presented, in which two approaches to the treatment of complex chemical wastewater are experimentally compared: an end-of-pipe “best available technology” option and an in-plant source segregation program. Both options proved to be feasible. Application of the powdered activated carbon treatment (PACT™) process for the combined end-of-pipe stream yielded up to 93% reduction of dissolved organic carbon, with complete toxicity elimination. In order to examine the potential for applying a conventional activated sludge process, a simplified laboratory screening procedure was devised, aimed at establishing baseline data of removability potential, defined either by biodegradation, activated carbon adsorption or volatilization. Using this procedure, the major source of the non-biodegradable fraction in the combined park's wastewater was traced to a single factory, from which twelve individual source streams were screened. The results allowed the division of the tested sources into three groups: degradable, volatile, and problematic. A modified wastewater segregation and treatment program was accordingly proposed, which should allow an efficient and environmentally acceptable solution. This program is presently at its final testing stages, at the conclusion of which a full comparison between the two approaches will be carried out.

The effect of surface metal oxides on activated carbon adsorption of phenolics

1998 ◽  
Vol 32 (6) ◽  
pp. 1841-1851 ◽  
Author(s):  
Lois J. Uranowski ◽  
Charles H. Tessmer ◽  
Radisav D. Vidic
Keyword(s):  
Activated Carbon ◽  
Metal Oxides ◽  
Activated Carbon Adsorption ◽  
Carbon Adsorption ◽  
Surface Metal ◽  
Effect Of Surface
Sign in / Sign up

Export Citation Format

Share Document