The most extensive textile export product and one of the nation's cultural legacies is batik cloth. However, regarding environmental quality, West Java's growing demand for batik production results ...in garbage contaminating the nearby waterways. The type of dye is where the harmful properties of batik waste originate. With descriptive qualitative methodologies and the Miles and Huberman model, this study intends to explain the various types of dyes used by SMEs producing batik in the batik centre region of the City and Tasikmalaya Regency and their impact for environmental health. The findings revealed that small and medium-sized enterprises (SMEs) engaged in the batik industry in Tasikmalaya City (Cipedes) utilized synthetic dyes such as indigosol, reactive Procion and Remazol, dispersion, and direct (mostly monoazo and diazo). In the meantime, batik artisans at the Tasikmalaya Batik Center (also known as Sukapura batik in Sukaraja) work with reactive Procion and Remazol (diazo), indigosol, jolawe fruit peel (Terminalia bellirica), soga jambal bark (Peltophorum pterocarpum), and tingi as natural dyes (Ceriops condolleana). The impact of used the different azo dyes can change the level of pH extremely, also improve the level of BOD, COD, TDS, and heavy metal such as chromium hexavalent ((Cr(VI)) in the waters
Faktor yang mendukung keberhasilan belajar seseorang diantaranya adalah faktor internal. Salah satunya berupa kemampuan seseorang untuk mengatur dan memberi arah pada dirinya sendiri sehingga mampu ...memperoleh hasil belajar yang maksimal. Adapun tujuan penelitian ini adalah untuk mengetahui hubungan atara self regulated learning dengan hasil belajar peserta didik pada sub konsep ekosistem di kelas XI MIPA tahun ajaran 2020/2021. Penelitian ini dilaksanakan pada bulan Agustus 2020 sampai dengan bulan September 2020 disalah satu SMAN di Kota Tasikmalaya. Metode penelitian yang digunakan adalah korelasional dengan populasi seluruh peserta didik kelas XI MIPA dengan jumlah 261 orang. sampel yang diambil dengan menggunkan teknik simple random sampling, sehingga penelitian ini mengambil sampel 7 orang dari setiap kelas XI MIPA dengan jumlah 8 kelas. Instrumen yang digunakan dalam penelitian ini terdiri dari 2 instrumen yaitu instrumen angket Motivated Strategies for Learning Questionnaire (MSLQ) bagian self regulated learning yang diadopsi dari penelitian sebelumnya dan instrumen tes yang berupa soal pilihan majemuk pada materi sub konsep ekosistem yang berjumlah 36 butir soal. Teknik analisis data yang digunakan adalah uji korelasi bivariat person dengan taraf signifikansi (É‘)=5%. Berdasarkan hasil penelitian dapat disimpulkan bahwa terdapat hubungan antara self regulated learning dengan hasil belajar peserta didik pada materi sub konsep ekosistem (R=0,502). Besar kontribusi dari self regulated learning terhadap hasil belajar sebesar 25,2%.
The batik industry in Indonesia has an IKM (Small and Medium Industry) scale so that it does not yet have adequate waste treatment. In the long term, waste is disposed of directly into the ...environment which can damage aquatic ecosystems and harm human health. Textile wastewater has a complementary picture and has a deep color. One of the most dangerous heavy metals contained in textile waste is hexavalent chromium (Cr(VI)). Several ways can be done to reduce hexavalent chromium (Cr(VI)) by bioremediation. Based on the results of the literature review, it shows that the bioremediation agents from single isolate microorganisms that are most effective in degrading chromium with high efficiency are Bacillus subtilis and Pseudomonas aeruginosa. The most effective consortium servers with constant reduction rates are the consortium of bacteria genus Mesophilobacter, Methylococcus, Agrobacterium, Neisseria, Xanthobacter, Deinococcus, Sporosarcina, and Bacillus by reducing BOD levels by 85.71%. The hexavalent chromium-degrading microorganisms are characterized by the presence of chromate reductase enzymes, mostly gram-negative bacteria, and a high growth rate.
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