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Application of Electrocoagulation for Printing Wastewater Treatment: From Laboratory to Pilot Scale
Thuy, Nguyen Thi,Hoan, Nguyen Xuan,Thanh, Dang Van,Khoa, Pham Minh,Tai, Nguyen Thanh,Hoang, Quang Huy,Huy, Nguyen Nhat The Korean Electrochemical Society 2021 Journal of electrochemical science and technology Vol.12 No.1
This study reports for the first time the application of electrocoagulation (EC) from laboratory to pilot scales for the treatment of printing wastewater, a hazardous waste whose treatment and disposal are strictly regulated. The wastewater was taken from three real printing companies with strongly varying characteristics. The treatment process was performed in the laboratory for operational optimization and then applied in the pilot scale. The weight loss of the electrode and the generation of sludge at both scales were compared. The results show that the raw wastewater should be diluted before EC treatment if its COD is higher than about 10,000 mg/L. Pilot scale removal efficiencies of COD and color were slightly lower compared to those obtained from the laboratory scale. At pilot scale, the effluent CODs removal efficiency was 81.9 - 88.9% (final concentration of 448 - 992 mg/L) and color removal efficiency was 95.8 - 98.6% (final level of 89 - 202 Pt-Co) which proved the feasibility of EC treatment as an effective pre-treatment method for printing wastewater as well as other high colored and hard-biodegradable wastewaters.
Inhibitory effects of indirubin derivatives on the growth of HL-60 leukemia cells.
Cuong, Nguyen Manh,Tai, Bui Huu,Hoan, Dang Hoang,Huong, Tran Thu,Kim, Young Ho,Hyun, Jae-Hee,Kang, Hee-Kyoung Natural Product Communications 2010 Natural product communications Vol.5 No.1
<P>Six indirubin derivatives have been synthesized and their inhibitory effects on the growth of HL-60 human promyelocytic leukemia cells investigated. Cell viability was determined using the trypan blue exclusion method. Indirubin-3'-oxime (I-1) inhibited the growth of HL-60 cells with a GI50 value of 36.6 microM, whereas I-0, I-2, I-3, I-4 and I-6 showed only weak cytotoxic activities against HL-60 cancer cells with GI50 values in the range of 97.3 to over 100 microM. These results indicate that indirubin derivatives might be useful candidate agents for exploring potential antileukemic drugs.</P>
Synthesis and Anti-osteoporosis Potential of Two New Indirubin-3'-oxime Derivatives
Cuong, Nguyen Manh,Tai, Bui Huu,Hoan, Dang Hoang,Long, Pham Quoc,Choi, Eun-Mi,Kim, Young-Ho The Korean Society for Applied Biological Chemistr 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.1
Two new indirubin-3'-oxime derivatives, indirubin-3'-[O-(3-bromoprop-1-yl)-oxime] (2) and indirubin-3'-[O-(methoxycarbonylmethyl)-oxime] (3) were synthesized. Their structures were confirmed by ESI-MS and NMR spectroscopic method. Both of them (5 ${\mu}g/mL$) significantly caused a elevation of cell growth, alkaline phosphate activity, and mineralization in osteoblastic MC3T3-E1 cells(p<0.05).
Synthesis and Anti-osteoporosis Potential of Two New Indirubin-3`-oxime Derivatives
( Nguyen Manh Cuong ),( Bui Huu Tai ),( Dang Hoang Hoan ),( Pham Quoc Long ),( Eun Mi Choi ),( Young Ho Kim ) 한국응용생명화학회 2010 Applied Biological Chemistry (Appl Biol Chem) Vol.53 No.1
Two new indirubin-3`-oxime derivatives, indirubin-3`-[O-(3-bromoprop-1-yl)-oxime] (2) and indirubin-3`-[O-(methoxycarbonylmethyl)-oxime] (3) were synthesized. Their structures were confirmed by ESI-MS and NMR spectroscopic method. Both of them (5 μg/mL) significantly caused a elevation of cell growth, alkaline phosphate activity, and mineralization in osteoblastic MC3T3-E1 cells (p<0.05).