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Metode Buffer Index Untuk Menentukan Volum Tangki Pada Proses Netralisasi Air Limbah Siti Agustina; Emmy Ratnawati
Jurnal Kimia dan Kemasan BULLETIN PENELITIAN VOL. XVII NO. 4 DESEMBER 1995
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24817/jkk.v0i0.5064

Abstract

We often found that industrial waste water have low or high pH; therefore it should be adjust to neutral before discharging into river or sea. We can treat it by neutralization to get no pH. There are many factors that affect eutralization process. One of them is retention time the reaction tank. Research has been done by using artificial waste water which is hydrochl acid solution (0,025N) and acetic acid solution (0,025 N). Sodium hydroxide (0,5 N) and Sodzz; carbonate (0,8 N) solution were used as an alkali. By using neutralization equipment, retention time will produce smaller pH fluctuation; and the bigger buffer index the smaller, fluctuation. The relationship among retention time, pH fluctuation and buffer index, will help ­to design volume of the reaction tank for continous neutralization that treat heavy containing waste water using pH control.
Formulasi Bioinsectisida Dari Bakteri Bacillus Thuringiensis Emmy Ratnawati; Rahyani Ermawati; Rahayu Susilowati
Jurnal Kimia dan Kemasan BULLETIN PENELITIAN VOL. XVIII NO. 1 APRIL 1996
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3763.138 KB) | DOI: 10.24817/jkk.v0i0.5080

Abstract

Among the pathogenic bacteria, Bacillus Thuringiensis is the one of potential bacterial insecticides which has the capability in crystallizing protein in the cell as an entomoxcyn or active agent of bioinsecticides. The advantages of bioinsecticides usage are toxic only to the insect target, and it is net creating bioinsecticides are toxic. The commercial form of Bacillus Thuringiensis is made from the active bacteria agent as mixing of spora and protein crystal and carrier. The active bacteria agent prepared by two kinds of fermentation methods, sub merged fermentation and semi solid fermentation. There are 7 bioinsecticide form available in Indonesia such as Granule, Flowable Concentrate, Wettable Powder, Suspension, Aqueous Suspension, Water Dispersible Granule and Ultra Low Volume. There product are not produce yet in Indonesia, just repacking for commercial purposes.
Penelitian Pembuatan Formulasi Insektisida Dari Tanaman Nimba Sri Pudji Rahayu; Rofienda Rofienda; Emmy Ratnawati
Jurnal Kimia dan Kemasan BULLETIN PENELITIAN VOL. XVIII NO. 2 AGUSTUS 1996
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24817/jkk.v0i0.5071

Abstract

Neem tree (Azadirachta indica) was found contain azadirachtion that can be used as an insecticide. Extraction of azadirachtin has been conducted in BEIK laboratory with neem seed collected from Madura and Ngawi, by using n-hexane, methanol petroleum ether and ethyl acetate as solvents. The experiment showed that n-hexane gave the best result in the extraction of neem seed from Madura, that was 20,36 °10. The neem extract then used to made Emulsifiable Concentrate (EC) formulation of insecticide. As a control, it was used neem oil from India.From the physico - chemical testing of formulation, is found that EC formulation of neem extract arc not give good result yet, compared then EC formulation that made from Indian neem oil.
Proses Aktivasi Ulang Bentonit Bekas Proses Pemucatan Minyak Kelapa Sawit Siti Agustina; Emmy Ratnawati; siti Nurtri H; Rofienda Rofienda; Tri Widianto
Jurnal Kimia dan Kemasan BULLETIN PENELITIAN VOL. 26 NO. 2 DESEMBER 2004
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2975.958 KB) | DOI: 10.24817/jkk.v0i0.4711

Abstract

Pada saat ini limbah adsorben bekas pada proses pemucatan minyak kelapa sawit yang berupa bentonit bekas belum dimanfaatkan secara optimal oleh industri. Penelitian ini bertujuan untuk meminimisasi limbah tersebut dengan cara mengaktivasi ulang, sehingga dapat digunakan kembali untuk proses pemucatan minyak kelapa sawit. Proses aktivasi bentonit bekas dilakukan dengan 2 cara, yaitu pertama aktivasi secara pemanasan dan kedua aktivasi secara pengasaman lalu pemanasan. Variabel penelitian adalah suhu pemanasan, jenis asam dan konsentrasi asam. Berdasarkan data hasil penelitian menunjukkan bahwa proses aktivasi adsorben bekas yangterbaik adalah proses aktivasi dengan cara pengasaman lalu pemanasan dengan menggunakan asam sulfat 4 % serta suhu pemanasan 400° C selama 1 jam. Efektifitas penurunan warna pada proses pemucatan minyak kelapa sawit dengan menggunakan bentonit bekas hasil aktivasi ulang adalah 90 %.
Metode Buffer Index Untuk Menentukan Volum Tangki Pada Proses Netralisasi Air Limbah Siti Agustina; Emmy Ratnawati
Jurnal Kimia dan Kemasan BULLETIN PENELITIAN VOL. XVII NO. 4 DESEMBER 1995
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3504.532 KB) | DOI: 10.24817/jkk.v0i0.5064

Abstract

We often found that industrial waste water have low or high pH; therefore it should be adjust to neutral before discharging into river or sea. We can treat it by neutralization to get no pH. There are many factors that affect eutralization process. One of them is retention time the reaction tank. Research has been done by using artificial waste water which is hydrochl acid solution (0,025N) and acetic acid solution (0,025 N). Sodium hydroxide (0,5 N) and Sodzz; carbonate (0,8 N) solution were used as an alkali. By using neutralization equipment, retention time will produce smaller pH fluctuation; and the bigger buffer index the smaller, fluctuation. The relationship among retention time, pH fluctuation and buffer index, will help ­to design volume of the reaction tank for continous neutralization that treat heavy containing waste water using pH control.
Penelitian Pembuatan Formulasi Insektisida Dari Tanaman Nimba Sri Pudji Rahayu; Rofienda Rofienda; Emmy Ratnawati
Jurnal Kimia dan Kemasan BULLETIN PENELITIAN VOL. XVIII NO. 2 AGUSTUS 1996
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4233.999 KB) | DOI: 10.24817/jkk.v0i0.5071

Abstract

Neem tree (Azadirachta indica) was found contain azadirachtion that can be used as an insecticide. Extraction of azadirachtin has been conducted in BEIK laboratory with neem seed collected from Madura and Ngawi, by using n-hexane, methanol petroleum ether and ethyl acetate as solvents. The experiment showed that n-hexane gave the best result in the extraction of neem seed from Madura, that was 20,36 °10. The neem extract then used to made Emulsifiable Concentrate (EC) formulation of insecticide. As a control, it was used neem oil from India.From the physico - chemical testing of formulation, is found that EC formulation of neem extract arc not give good result yet, compared then EC formulation that made from Indian neem oil.
Penurunan Kadar Sianida Dengan Pengolahan Sistim Oksidasi Pada Industri Pelapisan Logam Siti Agustina; Emmy Ratnawati
Jurnal Kimia dan Kemasan BULLETIN PENELITIAN VOL. 22 NO. 1 JUNI 2000
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2235.502 KB) | DOI: 10.24817/jkk.v0i0.4817

Abstract

It's common that the waste water from electroplating industry contains heavy metals such as cyanide. Based on this research, reduction of cyanide content from electroplating waste water is conducted by CN and CNO oxidations with sodium hypochlorite as an oxidator. The result-of this research shown that the optimum condition for CN oxidations is on pH 10.5, reaction time 6 minutes which resulting CN reduction 98,6%, while the CNO oxidations is on pH 8. 0, reaction time 15 minutes. By process of oxidations, coagulations, sedimentations and filtrations the CN content from electroplating wastewater can be reduced from 3 0 mg!! to 0. 004 mg/! to fulfill waste water quality standard for electroplating industry maximum 0. 05 mg/!.
Formulasi Bioinsectisida Dari Bakteri Bacillus Thuringiensis Emmy Ratnawati; Rahyani Ermawati; Rahayu Susilowati
Jurnal Kimia dan Kemasan BULLETIN PENELITIAN VOL. XVIII NO. 1 APRIL 1996
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24817/jkk.v0i0.5080

Abstract

Among the pathogenic bacteria, Bacillus Thuringiensis is the one of potential bacterial insecticides which has the capability in crystallizing protein in the cell as an entomoxcyn or active agent of bioinsecticides. The advantages of bioinsecticides usage are toxic only to the insect target, and it is net creating bioinsecticides are toxic. The commercial form of Bacillus Thuringiensis is made from the active bacteria agent as mixing of spora and protein crystal and carrier. The active bacteria agent prepared by two kinds of fermentation methods, sub merged fermentation and semi solid fermentation. There are 7 bioinsecticide form available in Indonesia such as Granule, Flowable Concentrate, Wettable Powder, Suspension, Aqueous Suspension, Water Dispersible Granule and Ultra Low Volume. There product are not produce yet in Indonesia, just repacking for commercial purposes.
Penurunan Kadar Sianida Dengan Pengolahan Sistim Oksidasi Pada Industri Pelapisan Logam Siti Agustina; Emmy Ratnawati
Jurnal Kimia dan Kemasan BULLETIN PENELITIAN VOL. 22 NO. 1 JUNI 2000
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24817/jkk.v0i0.4817

Abstract

It's common that the waste water from electroplating industry contains heavy metals such as cyanide. Based on this research, reduction of cyanide content from electroplating waste water is conducted by CN and CNO oxidations with sodium hypochlorite as an oxidator. The result-of this research shown that the optimum condition for CN oxidations is on pH 10.5, reaction time 6 minutes which resulting CN reduction 98,6%, while the CNO oxidations is on pH 8. 0, reaction time 15 minutes. By process of oxidations, coagulations, sedimentations and filtrations the CN content from electroplating wastewater can be reduced from 3 0 mg!! to 0. 004 mg/! to fulfill waste water quality standard for electroplating industry maximum 0. 05 mg/!.
Penelitian Pembuatan Bahan Aktif Pestisida Dari Sumber Hayati Emmy Ratnawati
Jurnal Kimia dan Kemasan BULLETIN PENELITIAN NO.34 TRIWULAN IV 1985/1986
Publisher : Balai Besar Kimia dan Kemasan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24817/jkk.v0i0.4943

Abstract

Natural pesticide resources that ever been developed in Indonesia are Tobacco (Nicotiana Tabacum L) contains 2-­5% nicotine in leaf, 0,47­- 0,87 nicotine in stem, Derris Eliptica contains 1-­ 14% rotenone. Phyrethrum (Phyrethrum Cineraefolium) contains 1-1,5% pyrethrin, Phachyrrhizus Erosus Urban contains 1-­5,5% pachyrrhizid and Black Pepper (Piper Nigrum L) contains piperine. Tobacco and Black Pepper are the potential resources that can be deve­loped as natural pesticides because it have better availibility.