PEMANFAATAN METODE PENGOLAHAN FITOREMEDIASI
TERHADAP KADAR COD, BOD, TSS DAN MERKURI DI INDUSTRI
PENAMBANGAN EMAS DUSUN TEJOGAN, HARGOREJO, KOKAP, KULONPROGO, SEBAGAI ANTISIPASI TERULANGNYA KASUS BUYAT
Heru Subaris Kasjono, Bambang Suwerda, Kamat Kartono
Phytoremediation is a type of wastewater treatment that use plants. Ipomea aquatica and Eichornia crassipes were used in this study. The study consisted of two steps, the first one was conducted in laboratory, and the second one was a field scale i.e. constructing wastewater treatment plants. The study was aimed to understand the effect of phytoremediation treatment using both plants towards the decrease of COD, BOD, TSS and mercury concentration by em-ploying ”pre-test post-test with control group” design. Wastewater sample were taken by using grab sampling method in three repetitions for both the experi-ment and the control groups. The results showed that for every 20 l wastewater, the highest effective dose for Ipomea aquatica an Eichornia crassipes was the same i.e. 0,75 kg. The results showed that the average decrease gained from the implementation of the treatment were: COD from 580 mg/l to 474 mg/l (17,1%); BOD from 336 mg/l to 332 mg/l; TSS from 1880 mg/l to 240 mg/l (87,2%); and mercury from 0,0039 mg/l to zero (100%). The post-treatment concentration for BOD, COD, and TSS has not fullfilled the requisite, however for mercury it has met the standard.
Kata Kunci : phytoremediation, gold mining waste water, BOD, COD, TSS,
REKAYASA FOTOSINTESIS TANAMAN HIAS
MENGGUNAKAN SINAR LAMPU LISTRIK
UNTUK MENGURANGI PENCEMARAN UDARA
Tuntas Bagyono, Sri Muryani, Susmono
Air pollution in some places have reached the dangerous level. As one of the pollutant gases, CO2 production is still increasing as an impact of human activities. As the CO2 level in ambient can be reduced by plants, the study was aimed to understand whether any indoor-plants could be photosynthesized by the light of electric lamps; and subsequently to reveal which light type that appropriate and to measure the CO2 absorption rate. The study was an experimental and employed “randomized complete block” design. The plants observed were: eusi-deroxylon Zwageri (kayu besi), Nycanthes arbortritis L. (sri rejeki), and metroxylon sp. (palm roll). Meanwhile, the lamps used were: day light TL (tabular lamp), violet TL, and clear bulb lamp; and also used four types of lighting. To measure the CO2, the instrument used was air sampler pump. Data were statistically analyzed by using Anove test at α 5%. The results showed that: 1) all indoor plants used in this study could be photosynthesized, 2) kayu besi was the most sensitive plant, 3) the most effective lamp type for each plant were not the same, 4) the photosynthesis rates between day and night were the same for all plants, 5) kayu besi was the best CO2 absorber.
Kata Kunci: photosynthesis engineering, indoor plants, electric lamp,
BEBERAPA SISTEM PENGELOLAAN SAMPAH MANDIRI
DAN PRODUKTIF BERBASIS MASYARAKAT DI KAMPUNG SUKUNAN,
BANYURADE, GAMPING, SLEMAN
Iswanto, Sarjito Eko Windarso, Narto
In 2000, Sukunan farmers complained on the increasing amount of plastic rubbish around their rice fields. As one of the impact from the rubbish problem was dengue cases nearly occur every year. Most people burned all types of rubbish including plastic, styrofoam, rubber, etc; without conducting any appropriate waste management. In 2003, a community-based waste management system was founded and later was introduced to all Sukunan people through many strategies and methods, such as demonstration, games, competition, songs, poems, discussion, training, writing, diagrams, leaflets, appeal letters, face to face meeting, and other social empowering approaches. The system has been proven to work very well, and to strongly help the local environment, to prevent some diseases, to avoid social conflict, to provide job opportunities, to give economic benefits, and to enhance the sense of belonging amongst the community in keeping their own programs and their village’s health..
Kata Kunci: rubbish, waste-management, community empowering
PENGURASAN ALAT PENGOLAH AIR MINUM DAMIU (DEPOT AIR MINUM ISI ULANG) UNTUK MENURUNKAN ANGKA KUMAN, BAHAN ORGANIK,
BESI DAN MANGAN
Sri Puji Ganefati, Sri Muryani, Abdul Hadi Kadarusno
Water is very important for human life. People need approximately 2,5 liter wa-ter everyday. In some places, the quality of drinking water are decreasing so that no longer appropriate. According to Bapedalda in 2003, Yogyakarta’s ground water were polluted by coliform microbes, organic substances, iron and mangan. Meanwhile, diarrhea cases in Yogyakarta are always high and were suspected related with those unstandardized water supply. On the other hand, the increasing use of DAMIU is potentially causing new problem in the community since it was found that respectively 56-57% and 68-75% of the depots were bacteriologicallly and chemically affected. The purpose of the study was to understand the effect of the drainage frequency of DAMIU on the decrease of MPN coliform, organic substances, iron and mangan by conducted experimental study with ”pre-test and post-test” design. The results showed that for all those parameters the percentage of the decrease were respectively as follows: 90,2-98,4%; 38,9-69,1%; 68,6-99,8%; and 81,3-95,1%. However, eventhough the decrease were statistically significant, the actual post-concentration of MPN coliform and organic substances have not fulfilled the requisites. In addition, it was found that there was no difference between once and twice a week of drainage frequency.
Kata Kunci: pengurasan, Depot Air Minum Isi Ulang, air minum,
angka kuman, bahan organik besi, mangan
ARANG AKTIF UNTUK MENURUNKAN
KELEMBABAN KAMAR TIDUR
Siti Hani Istiqomah, F.X. Amanto Rahardjo, Mohamad Mirza Fauzie
The research was aimed to decrease bedroom humidity. Based on the results from other study, in village of Kajor, Banyuraden, Gamping, Sleman, the range of humidity in bedrooms were measured between 78 and 82%. The research was an experimental one and employed “pre-test and post-test with control group” study design. By using Anova test, the results showed that the application of various weight of activated charcoal (i.e. 6, 7, 8, 8, 9 and 10 kg respectively) affected the decrease of bedrooms’ humidity. For one m3 room volume, the most effective treatment activated charcoal was 0,215 kg. However, in order to keep the carbon effective, it must be sun-dried every four days.
Kata Kunci: room humidity, activated charcoal
STUDI DESKRIPTIF KERUSAKAN EKOSISTEM DAN FAKTOR RISIKO DAMPAK KESEHATAN AKIBAT PENGGUNAAN PESTISIDA
DI SEKTOR PERTANIAN
STUDI KASUS: PERTANIAN BAWANG MERAH DAN CABE
DI KABUPATEN BREBES, JAWA TENGAH, 2004
Agus Suwarni, Pramiyati
Basically, pesticides used for agricultural sectors such as organophosphate and carbamate are degradable. However, if they are used continuosly, the by-product residue can affect the ecosystem and causing damage. The damage on ecosystem can be caused as well by the use of non-degradable organochlorine pesticides. The damage can be known by measuring soil diversity index. The intrution of the pesticides residue through ground water can pollute the well-water. Subsequently, if the water is consumed by the people it could become risk factors for some health impacts. The results of the study showed that the residue of carbamate in surface water and ground soil were respectively 9 and 4,3 times higher that those in control; meanwhile, the residue of organophosphate in both places were 27 and 3,6 times higher. In addition, based on the diversity index of plankton the pesticide pollution was considered as minor to moderate, while of benthos it was moderate.
Kata Kunci: pesticides, ecosystem, public health