نتایج جستجو برای: gac adsorption

تعداد نتایج: 55606  

Journal: :Sustainability 2023

Developing low-carbon advanced processes for sustainable wastewater treatment is of great importance to increase bioenergy recovery and reduce the greenhouse gas effect. In this study, influence adding 25 g/L granular activated carbon (GAC) on process performance was studied with a lab-scale GAC amended anaerobic dynamic membrane (G-AnDMBR) used treat real domestic wastewater, which compared co...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Clint A Stalnecker Scott M Ulrich Yunxing Li Sekar Ramachandran Mary Kate McBrayer Ralph J DeBerardinis Richard A Cerione Jon W Erickson

The mitochondrial enzyme glutaminase C (GAC) catalyzes the hydrolysis of glutamine to glutamate plus ammonia, a key step in the metabolism of glutamine by cancer cells. Recently, we discovered a class of allosteric inhibitors of GAC that inhibit cancer cell growth without affecting their normal cellular counterparts, with the lead compound being the bromo-benzophenanthridinone 968. Here, we tak...

2003
Michael Malisoff Ludovic Rifford Eduardo Sontag

We announce a new construction of a stabilizing feedback law for nonlinear globally asymptotically controllable (GAC) systems. Given a control affine GAC system, our feedback renders the closed loop system input to state stable with respect to actuator errors and small observation noise. We also announce a variant of our result for fully nonlinear GAC systems.

2004
Debasish Das Vivekanand Gaur Nishith Verma

Experiments were carried out to study adsorption/desorption of volatile organic compound (VOC) on the activated carbon fiber (ACF) under dynamic conditions. The primary objective was to experimentally demonstrate the suitability of ACF in effectively adsorbing VOCs from inert gaseous stream under varying operating conditions, and compare its performance vis-à-vis that of the other commercially ...

Journal: :Water research 2005
Michelle Edith Jarvie David W Hand Shanmugalingam Bhuvendralingam John C Crittenden Dave R Hokanson

Granular activated carbon (GAC) adsorption is an effective treatment technology for the removal of synthetic organic chemicals (SOCs) from drinking water supplies. This treatment process can be expensive if not properly designed. Application of mathematical models is an attractive method to evaluate the impact of process variables on process design and performance. Practical guidelines were dev...

Journal: :Bioresource technology 2009
Huijuan Liu Jia Ru Jiuhui Qu Ruihua Dai Zijian Wang Chun Hu

A new biomimetic absorbent, cellulose acetate (CA) embedded with triolein (CA-triolein), was prepared and applied for the removal of persistent organic pollutants (POPs) from micro-polluted aqueous solution. The comparison of CA-triolein, CA and granular activated carbon (GAC) for dieldrin removal was investigated. Results showed that CA-triolein absorbent gave a lowest residual concentration a...

Journal: :Bioscience, biotechnology, and biochemistry 2002
Hiromitsu Aoki Nguyen Thi Minh Kieu Noriko Kuze Kazue Tomisaka Nguyen Van Chuyen

The carotenoids in Gac fruit (Momordica Cochinchinensis spreng) were analysed by high-performance liquid chromatography (HPLC), and the concentrations of beta-carotene, lycopene, zeaxanthin and beta-cryptoxanthin were measured. Lycopene was found to be predominantly present in the Gac seed membrane at a concentration of up to 380 microg/g of seed membrane. The concentration of lycopene in the G...

Journal: :Water SA 2022

Oil and grease (O&G) removal efficiencies using 4 automobile stormwater treatment systems were investigated compared. The used were: low-cost granular activated carbon–rice husk (GAC–RH) filter system, river gravel–granular carbon (GR–GAC) rice only (RH) system the conventional PVC O&G trap (COT). Sampling of from five selected workshops was carried out manual grab sampling methods. inv...

2018
Hoang V Chuyen Minh H Nguyen Paul D Roach John B Golding Sophie E Parks

The peel of Gac fruit (Momordica cochinchinensis Spreng.) contains high levels of bioactive compounds, especially carotenoids which possess significant antioxidant capacities. However, the peel of Gac is regarded as a waste from the production of carotenoid-rich oil from Gac fruit. In this study, carotenoids of Gac peel were extracted by microwave-assisted extraction (MAE) and ultrasound-assist...

Journal: :Environmental technology 2012
Flávia Vieira da Silva Natália Ueda Yamaguchi Gilselaine Afonso Lovato Fernando Alves da Silva Miria Hespanhol Miranda Reis Maria Teresa Pessoa Sousa de Amorim Célia Regina Granhen Tavares Rosângela Bergamasco

This study evaluates the performance of a polymeric microfiltration membrane, as well as its combination with a coconut granular activated carbon (GAC) pretreatment, in a gravitational filtration module, to improve the quality of water destined to human consumption. The proposed membrane and adsorbent were thoroughly characterized using instrumental techniques, such as contact angle, Brunauer-E...

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