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Abstrak :
Penelitian ini membahas Persepsi Risiko Masyarakat Terhadap Limbah Cair Industri Karet di RT 04 RW 04 Kelurahan XYZ Palembang dengan menggunakan pendekatan psikometrik. Limbah cair industri, apabila dibuang tanpa diolah terlebih dahulu, dapat memberikan pengaruh yang berbahaya bagi kehidupan masyarakat dan makhluk hidup lainnya, apalagi jika limbah tersebut mengandung bahan kimia yang bersifat beracun. Pendekatan psikometrik merupakan cara penilaian terhadap terbentuknya persepsi risiko seseorang berdasarkan faktor internal individu dan beberapa variabel penelitian yang berkaitan dengan faktor dalam pendekatan psikometrik tersebut, yang dapat melihat persepsi risiko masyarakat terhadap limbah cair industri karet. Desain penelitian ini bersifat cross-sectional dengan pendekatan kuantitatif. Subjek yang terlibat dalam penelitian ini diambil berdasarkan jumlah kepala keluarga sebanyak 85 responden. Hasil studi menunjukkan adanya hubungan antara umur, tingkat pendidikan, lama tinggal, faktor kecepatan efek risiko, pengetahuan, pengalaman, kebaharuan risiko, pengendalian risiko, potensi risiko, dan keparahan konsekuensi risiko dengan persepsi risiko terhadap limbah cair industri. Hasil penelitian ini menyarankan adanya promosi kesehatan mengenai pengetahuan dan informasi tentang bahaya limbah cair untuk mengedukasi masyarakat pada umumnya, serta perlunya perhatian dari pemerintah setempat mengenai pengawasan pembuangan limbah cair industri. --- This study discusses the public's risk perception of liquid rubber industry waste in RT 04 RW 04 Kelurahan XYZ Palembang using a psychometric approach. Liquid industrial waste, when discarded without being processed first, can have harmful effects on people's lives and other living things, especially if the waste contains toxic chemicals. The psychometric approach assesses the formation of risk perceptions based on individual factors and various research variables within this approach, which can evaluate the public's risk perception of rubber industry wastewater. This study uses a cross-sectional design with a quantitative approach. Subjects involved in this study were drawn based on the number of families, totaling 85 respondents. The study results show a relationship between age, education level, length of stay, risk effect speed, knowledge, experience, novelty of risk, risk control, potential risk, and severity of risk consequences with risk perception of industrial wastewater. The results suggest the need for health promotion and information about the dangers of wastewater to educate the public, as well as the necessity for local government oversight of industrial wastewater disposal.

Abstrak :
Penelitian ini membahas Persepsi Risiko Masyarakat Terhadap Limbah Cair Industri Karet di RT 04 RW 04 Kelurahan XYZ Palembang dengan menggunakan pendekatan psikometrik. Limbah cair industri, apabila dibuang tanpa diolah terlebih dahulu, dapat memberikan pengaruh yang berbahaya bagi kehidupan masyarakat dan makhluk hidup lainnya, apalagi jika limbah tersebut mengandung bahan kimia yang bersifat beracun. Pendekatan psikometrik merupakan cara penilaian terhadap terbentuknya persepsi risiko seseorang berdasarkan faktor internal individu dan beberapa variabel penelitian yang berkaitan dengan faktor dalam pendekatan psikometrik tersebut, yang dapat melihat persepsi risiko masyarakat terhadap limbah cair industri karet. Desain penelitian ini bersifat cross-sectional dengan pendekatan kuantitatif. Subjek yang terlibat dalam penelitian ini diambil berdasarkan jumlah kepala keluarga sebanyak 85 responden. Hasil studi menunjukkan adanya hubungan antara umur, tingkat pendidikan, lama tinggal, faktor kecepatan efek risiko, pengetahuan, pengalaman, kebaharuan risiko, pengendalian risiko, potensi risiko, dan keparahan konsekuensi risiko dengan persepsi risiko terhadap limbah cair industri. Hasil penelitian ini menyarankan adanya promosi kesehatan mengenai pengetahuan dan informasi tentang bahaya limbah cair untuk mengedukasi masyarakat pada umumnya, serta perlunya perhatian dari pemerintah setempat mengenai pengawasan pembuangan limbah cair industri. --- This study discusses the public's risk perception of liquid rubber industry waste in RT 04 RW 04 Kelurahan XYZ Palembang using a psychometric approach. Liquid industrial waste, when discarded without being processed first, can have harmful effects on people's lives and other living things, especially if the waste contains toxic chemicals. The psychometric approach assesses the formation of risk perceptions based on individual factors and various research variables within this approach, which can evaluate the public's risk perception of rubber industry wastewater. This study uses a cross-sectional design with a quantitative approach. Subjects involved in this study were drawn based on the number of families, totaling 85 respondents. The study results show a relationship between age, education level, length of stay, risk effect speed, knowledge, experience, novelty of risk, risk control, potential risk, and severity of risk consequences with risk perception of industrial wastewater. The results suggest the need for health promotion and information about the dangers of wastewater to educate the public, as well as the necessity for local government oversight of industrial wastewater disposal.

Abstrak :
University laboratories are supporting facilities, which play an important role for implementation of education, research and public service activities. University laboratories which use chemicals might produce environmentally hazardous wastewater, when proper management effort is not undertaken.During implementation of a study carried out in august to december 1998, it was observed that laboratory of department of environmental engineering ITS produced 138 L concentrated wastewater and 23 m3 diluted wastewater from washing basins. Concentrated wastewater is classsified into 5 groups, namely acidic waste, basic waste, waste with heavy metal, organic solvent and organiz waste. Forst four groups are known as hazardous wastes. PH range of acidic waste is 0.54-1.86 and that of basic waste is 12-12.67. heavy metal wastewater contains 60.54 mg/L Ag (concentration variation between 0.05-243.23 mg/L); 37.84 mg/L (concentration variation between 0-50.58 mg/L) and 11,26 mg/L Cr (concentration variation between 0-32,17 mg/L). principal component of organic solvent waste is cloroform. Wastewater of washing basins has a PH range of 1.5-4.2 and contains 6.40 mg/L (variation concentration between 0.01-26.54 mg/L); 8.59 mg/L Hg (variation concentration between 0-20.12 mg/L); and 0.95 mg/L Hg (variation concentration between 0-2.27 mg/L). quality and composition of wastewater showed that laboratory should be supported with proper wastewater management system. Appropriate collection and treatment system of wastewater is proposed in order to minimize pollution of surrounding environment.

Abstrak :
ABSTRAK
Komposit TiO2-NT/karbon aktif/Fe3O4 telah berhasil disintesis dengan menggunakan metode heteroaglomerasi dan digunakan untuk mengeliminasi 2,4,6-Triklorofenol (2,4,6-TCP) dalam limbah cair industri pulp dan kertas. Komposit ini dikarakterisasi dengan menggunakan XRD, FT-IR, SEM-EDX, TEM dan BET. Hasil karakterisasi XRD menunjukkan bahwa komposit TiO2-NT/karbon aktif/Fe3O4 memiliki fasa anatase TiO2 yang dapat mendegradasi polutan dan fasa Fe3O4 yang dapat ditarik oleh medan magnet luar. Hasil karakterisasi FT-IR menunjukkan ikatan elektristatik dari ketiga material yang dikompositkan. Hasil karakterisasi SEM-EDX dan TEM menunjukkan adanya material karbon aktif, TiO2-NT dan Fe3O4 dalam morfologi dan komposisi komposit. Selain itu, hasil karakterisasi BET menunjukkan bahwa komposit mempunyai luas permukaan yang tinggi sebesar 116.8 m2/g. Berdasarkan hasil uji eliminasi 2,4,6-TCP, komposit TiO2-NT/karbon aktif/Fe3O4 memiliki kemampuan menyisihkan 2,4,6-TCP secara efektif. Komposisi komposit dan kondisi operasi optimum yang didapatkan adalah komposisi perbandingan massa TiO2-NT : karbon aktif : Fe3O4 yaitu 1 : 0.02 : 0.1, loading katalis sebesar 1 g/L, penambahan laju alir udara sebesar 500 cc/menit dan konsentrasi awal limbah kurang dari 10 ppm dengan dengan lama irradiasi selama 4 jam. Selain itu, berdasarkan pengukuran waktu separasi komposit menggunakan batang magnet luar, didapatkan bahwa penambahan Fe3O4 dalam komposit mampu mereduksi waktu separasi komposit.

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Composite TiO2-NT/activated carbon/Fe3O4 has been successfully synthesized by use heteroaglomeration method and is used to eliminate 2,4,6-trichlorophenol in wastewater of pulp and paper industry. The composite is characterized by using XRD, FT-IR, SEM-EDX, TEM and BET. XRD characterization results indicate composite TiO2-NT/ activated carbon/Fe3O4 has anatase TiO2 to degrade pollutants and Fe3O4 to be pulled by external magnetic field. FTIR characterization results indicate electrostatic bonding of composite materials. SEM-EDX and TEM characterization results indicate the presence of activated carbon material, TiO2-NT and Fe3O4 in morphology and composition. In addition, BET characterization results indicate composite has high surface area of ​​116.8 m2/g. Based on results of elimination of 2,4,6-TCP, TiO2-NT/activated carbon/Fe3O4 have ability to eliminate 2,4,6-TCP effectively. The optimum of composition and operating conditions obtained are composition mass ratio of TiO2-NT : activated carbon : Fe3O4 is 1: 0:02: 0.1, loading the catalyst of 1 g/L, air flow rate of 500 cc/min and an waste initial concentration is less than 10 ppm with irradiation for 4 hours. In addition, based on measurements of time separation composite using an external magnetic rod, it was found that the addition of Fe3O4 in composite is capable of reducing separation time of composite.