Article Per Year (5 Year)
p-Index From 2021 - 2026
0.659
P-Index
This Author published in this journals
All Journal Journal of Applied Chemical Science Chemistry Indonesian Journal of Chemical Research Chemical Engineering Journal Storage (CEJS) Chemistry Notes
Bibiana D. Tawa
Department of Chemistry Faculty of Science and Engineering, Nusa Cendana University
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science

Published : 9 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search
Journal : Journal of Applied Chemical Science

 1 
The Moringa Seed (Moringa oleifera, L.) Extracts Potentially Reduce the Effects of Clothes Washing Wastewater on Growth of Green Beans (Vigna radiata) Merymistika Y. Afred; Bibiana D. Tawa; Pius D. Ola
Journal of Applied Chemical Science Volume 1, No. 2 , 2012
Publisher : Journal of Applied Chemical Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

A study concerning the use of Moringa seed (Moringa oleifera, L.) extracts to reduce the influence of clothes washing wastewater on growth of green bean (Vigna Radiata) has been conducted. The study aimed to determine the effective dose of coagulants prepared from moringa seed extracts (400, 600, 800, 1000, and 2000 mg/L) on germination of green beans in wastewater. The results showed that the optimum dose of coagulant was 2000 mg/L. The treatments with various doses of coagulants indicated significantly different except for the dose of 1000 mg/L and 2000 mg/L (P < 0.05). The stem height and leaf watering with coagulant water were 25.9 cm and 14.1 cm2, respectively, while by the tap water were 24.3 cm and 10.99 cm2, respectively. Those results conclusively indicated that the water coagulant prepared from moringa seed extracts promotes growth of the vigna radiata.
The Amelioration of BOD and COD Levels in Tofu Industry Liquid Waste by the Extracts of Moringa Seeds (moringa oleifera L.) and Activated Carbon of the Corn Cob (Zea mays L.) Nurhadyati; Bibiana D. Tawa; Febri O. Nitbani
Journal of Applied Chemical Science Volume 2, No. 1 , 2013
Publisher : Journal of Applied Chemical Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

There has been conducted a research to measure effectiveness of moringa seeds (moringa oleifera L) extract as biokoagulan and the activated carbon of corn cob (Zea mays, L) as adsorbent to ameliorate the chemical oxygen demand (COD) and biochemical oxygen demand (BOD) contents in tofu industry liquid waste. The used metods were, first method, the coagulation-floculation using moringa seed extract in various concentrations of 5000, 5200, and 5400 ppm, and the activated carbon of corn cob at concentration of 26.67 ppm and the second, the combination of coagulation/floculation with adsorption method. The results showed that the initial values of the COD and BOD of the tofu liquid waste were 1048.8 mg/L and dan 201.78 mg/L, respectively. The separated koagulation-floculation process provided maximum concentration of moringa seed extract was 5200 ppm and able to reduce COD and BOD levels respectively up to 555.07 and 161,68mg/L, while using 26.67 ppm of corn cob activated carbon could reduce the COD and BOD levels respectively up to512.13 and 115.42 mg/L; whereas the combination of coagulation/floculation-adsorption method utilizing 5200 ppm of biocoagulan and 26.67 ppm of the activated carbon yielded those COD and BOD levels respectively up to 272.93 and 73.07 mg/L. Referring to the SNI standard, these COD and BOD values meet the demand quality standard required. Both moringa seed extract and the corn cob activated carbon are prospective material to maintain COD and BOD levels of water flowing from the tofu industry.
Co-Authors Afred, Merymistika Yufrani Antonius R.B. Ola Bokay, Ernawati A. Cunha, Theodorus M. Da E. Selan, Odi Th. Fone, Maria Y.B. Gauru, Imanuel Hadijah Salim, Siti Hermania Em Wogo Kale, Alfius R. Ledoh, Sherlly M. F. Lulan, Theodore Y. K. Merymistika Y. Afred Nitbani, Febri O. Nurhadyati Pius Dore Ola Pius Dore Ola Sedo, Karolina M. Suwari Suwari Tnunay, Yarni R. Weking, Maria Y. T.