Suwari Suwari
Jurusan Kimia, Fakultas Sains dan Teknik, Universitas Cendana, Jl. Adisucipto, Kupang 85001.

Published : 3 Documents
Articles

Found 3 Documents
Search

MODEL DINAMIK PENGENDALIAN PENCEMARAN AIR KALI SURABAYA

Bumi Lestari Journal of Environment Vol 11 No 2 (2011)
Publisher : Environmental Research Center (PPLH) of Udayana University

Show Abstract | Original Source | Check in Google Scholar

Abstract

The Surabaya River plays an important role as water supply of the Surabaya PDAM, irrigation, industry, transportation, and means of recreation. However, domestic, industrial, and agricultural waste that were discharged into the river stream polluted the Surabaya River and decreased the carrying capacity and assimilative capacity. Therefore, effort to monitor and control the Surabaya River water pollution need to be well organized and implemented. The aim of the research is to develop a model of water pollution control on Surabaya River region. The research was carried out based on field survey, in situ and laboratory sample examination, questionnaire, and expert judgment. Pollution control model developed in this study was built into three sub-models, namely: (1) ecology sub-model, (2) social sub-model, and (3) economy sub-model using powersim constructor 2.5 version. Pollution control scenarios were developed using prospective analysis. The results of water pollution parameters such as TSS, DO, BOD, COD, N-NO2, and the level of mercury (Hg) were higher than the allowable class 1 standard. The sources of Surabaya River pollution mainly are domestic and industrial waste with total load of BOD, COD, and TSS are 55.49, 132.58, and 210.13 ton/day, respectively. According to water quality status, the Surabaya River is categorized as heavy polluted and the loading pollution need to be decreased. By using prospective analysis, there were five important factors that affect the future of the Surabaya River water pollution control, i.e.: (1) population growth and community awareness, (2) community perception, (3) implementation of regulations, (4) commitment/local government support, and (5) system and institutional capacity. There are three development scenarios, that are pessimistic, moderate and optimistic. The moderate and optimistic scenario are the realistic scenarios that occur in the future for Surabaya River water pollution control in considering of ecology, social and economy aspects.

ANALISIS KEBUTUHAN LUASAN HUTAN KOTA BERDASARKAN PENYERAPAN CO2 ANTROPOGENIK DI KOTA KUPANG

Bumi Lestari Journal of Environment Vol 12, No 2
Publisher : Udayana University

Show Abstract | Original Source | Check in Google Scholar

Abstract

The main purpose of the research is to analyze the needs of urban forest in the Kupang City based on the sink of CO2 anthropogenic. Primary data collected through field surveys and laboratory analysis of leaf samples using carbohydrate method. Case studies and literature are used to obtain secondary data from relevant agencies or literature, especially the results of studies with similar cases. The results showed that increasing emmission of CO2 anthropogenic. Total emissions of CO2 anthropogenic come from the use of fuel oil and gas and electricity consumption was 393,498.003 tons/year, in 2015 increased to 490,673.45 tons/year, and in 2025 reached 710,928.38 tons/year. Urban forest area in the city today in many forms of 969.35 ha or 5.38%, but from the region of the pure function as urban forest is only 177 ha or 0.98%. Based on the absorption of CO2, the needs of urban forest area in the city at this time are sufficient, but based on Government Regulation number 63/2002 that establishes urban forest land area of at least 10% of the area of ??the city, the area available has not yet qualified. CO2 absorption of 9 tree species studied vary between tree species, depending on the mass of net carbohydrates, leaf area, and number of leaves per tree. Plants that have high the absorptive capacity of CO2 are the jackfruit and the banyan tree with value of 453.95 and 428.48 kg/tree/year, respectively, while the lowest  is flamboyant with 0.12 kg/tree/year of CO2 absorption.

MODEL PREDIKSI PENGARUH LIMBAH CAIR HOTEL TERHADAP KUALITAS AIR LAUT DI PESISIR TELUK KUPANG (A Prediction Model of Liquid Waste Hotel Impact on The Sea Water along The Coast of Kupang Bay)

Jurnal Manusia dan Lingkungan (Journal of People and Environment) Vol 22, No 3 (2015)
Publisher : Pusat Studi Lingkungan Hidup Universitas Gadjah Mada

Show Abstract | Original Source | Check in Google Scholar

Abstract

ABSTRAKHotel-hotel di pesisir Teluk Kupang sebagian besar membuang efluen limbah cairnya ke laut. Kondisi ini akan berpengaruh terhadap kualitas air laut dan berdampak pada kelangsungan hidup biota dan mikroorganisme laut. Penelitian ini bertujuan untuk membuat prediksi pengaruh efluen limbah cair hotel yang dibuang terhadap kualitas air laut di hadapannya. Parameter yang diteliti adalah minyak dan lemak dan ortofosfat efluen limbah cair hotel. Parameter kualitas air laut yang diteliti adalah kekeruhan, minyak dan lemak dan klorofil. Metode pengambilan sampel dan pengujian menggunakan SNI dan USEPA. Analisis data menggunakan uji korelasi dan regresi. Hasil penelitian menunjukkan bahwa kekeruhan air laut pada jarak 0 meter dan 25 meter dapat diprediksi dari kadar minyak dan lemak efluen limbah cair hotel melalui model regresi y = 0,0051 x + 4,8456 dan y = 0,0015 x + 4,5440. Kadar klorofil air laut pada jarak 25 meter dan 75 meter dapat diprediksi dari kadar ortofosfat efluen limbah cair hotel melalui persamaan regresi y = 0,0430 x + 0,0004 dan y = 0,0075 x + 0,0001. ABSTRACTMost of the hotels located along the coast of Kupang Bay dump their effluent liquid waste to the sea. This action will definitely affect the sea water quality and in turn, will unavoidably give deep impact on the life of both microorganism and all the living things in the sea. This research intends to make an impact prediction on the sea water quality over the dumping hotels’ affluent liquid waste to the sea. The parameters which are observed are oil and fat and orthophosphate of the hotels’ affluent liquid waste. While the observed parameters of the sea water quality are turbidity, oil and fat, and chlorophyll. The methods used to take and test the sample are SNI and USEPA. And to analyze the data, testing on both correlation and regression are applied. The result of the study reveals that the turbidity of the sea water within the range of 0 to 25 meters can be predicted from the level of oil and fat of the hotels’ affluent liquid waste by using regression model equation y = 0.0051 x + 4.8456 and y = 0.0015 x + 4.5440. Meanwhile, the level of the sea water chlorophyll within the range of 25 to 75 meter can be predicted from the level of orthophosphate of the hotels’ affluent liquid waste by using the equation of regression y = 0.0430 x + 0.0004 and y = 0.0075 x + 0.0001.