Investigating effectiveness of Moringa oleifera seed as environmentally-friendly phytocoagulant to reduce pollutant in batik industry wastewater has been conducted for period of times. This study found that processing coagulation flocculation independently was proved ineffective for batik industrial wastewater treatment. pH was variable that met effluent standards set by government, while other two variables, BOD and COD, did not meet the standard set, as both increased along with the increasing dose of Moringa oleifera. The increase of BOD and COD was probably caused by the oil content which was not extracted from the seeds. Although TDS variable showed significant reduction between 66%-92%, it did not meet effluent standard set by government. This study suggested that future research should add an independent variable, such as variations of rapid stirring, pH variations, or oil extraction. In addition, combining several processing methods and adding different dose of Moringa oleifera seeds can be also another option. These are to possibly see the effectiveness of the flocculation-coagulation process independently as well as the combination of them in the wastewater treatment of batik industry.
Human behaviour is strongly influenced by prerequisite knowledge, residential, working place, and schools/studying place situation as well as friend or companion’s behaviour. Soldiers have different behaviours compared to educators, doctors, farmers, traders, and so forth. To make students become environmentally friendly-human beings, they need to have knowledge on how to protect the environment. Since 1986, the Republic of Indonesia government has included environmental education into school curriculum; and the end is the 2013 curriculum (C-13). There are eight subject courses in elementary school’s 2013 curriculum. Of the eight subjects, Natural Science is relevant subjects as a means to implement the environmental education (EE) concepts. Natural Science is taught in grades IV, V, and VI using thematic approaches for 9 x 40 minutes a week. However, the implementation of C-13 in elementary schools is still less optimal because there are still many prerequisite factors to be fulfilled, such as: infrastructure, learning resources, teachers’ skills, and assessment systems. In conclusion, Natural Science subjects has a significant role to debrief the environmental education concepts especially in elementary school. Thus, learning model and media of natural science need to be further developed.
Pelatihan di latar belakangi untuk menyamakan kompetensi kelulusan siswa pada mata pelajaran tersebut, terkait adanya perkembangan operasional alat dan pengembangan alat dari manual ke idital. Sebagai masalah 1) Guru sebagai pendidik selalu berusaha menyiapkan lulusan SMK sebagai tenaga kerja dikonstruksi, 2) selalu menyesuaikan diri dari perkembangan teknologi pada pekerjaan lapangan, 3) pentingnya fungsi alat UT di lapangan sebagai alat sarana penetapan titik duga, cek kelurusan, ketegakan yang dikehendaki pada bangunan gedung. Tujuan PKM:1) menyamakan pemahaman kompetensi mata pelajaran tersebut bagi kelulusan SMK, 2) memberi pemahaman informasi perkembangan teknologi alat pengukuran, 3) pemahaman operasional dan pengolahan data alat pengukuran di lapangan yang hasil pengukurannya sangan berfungsi untuk pembangunan. Rumusan masalah pelatihan 1) bagaimanakah peningkatan pemahaman mengolah data hasil pengukuran waterpass, theodolit, total station 2) bagaimanakah kepuasan materi dan pemateri pada pelatihan. Metode pelatihan ceramah, mengerjakan tugas, pemberian pre tes dan post tes serta pengisian angket kepuasan. Hasil Pelatihan:1) pemahaman materi, peserta sudah mempunyai kemapuan cukup karena menjawab pertanyaan dengan benar 58 %, 2) Peningkatan pemahaman setelah pelatihan ada kenaikan sedikit sekitar 18 % 3) Pemahaman materi operasional alat total stasion sebesar 40 %, 4)Peserta 95 % menyatakan sangat puas pada materi yang diberikan. 5)Kepuasan pada pemateri pelatihan 88 %.
This research is motivated by the fact that the quality of groundwater in small type housing in Surabaya is low, with a high content of E-Coli bacteria. By this fact, it is necessary to study what factors are causing the high content of E-Coli bacteria. Continuing the previous research as a target of the study, this study was conducted in Pondok Benowo Indah Housing (PBI) Pakal subdistrict West Surabaya. From the PIB housing area, four houses/ shallow wells were selected as the center of the study site. This study analyzed several variables such as water quality with several parameters, the distance between septictank and the wells, soil density, soil permeability, many quality of septictank construction of surrounding community activities, channels situation, and frequency of flood. Data were collected by means of measurements in the field, laboratory tests, news on social media, and interviews with local communities. Data processing was done descriptively. This study found that the main factor of the high content of e-Coli bacteria originated from the quality of septictank, there may be damaged, broken, leaking, and the wall is permeabel, so that by the times, it become absorbed and by the soil and run into the well.
KampusUnesa Ketintang selalu terjadi banjir pada setiap musim penghujan. Bila terjadi hujan deras dengan durasi 2-3 jam akan terjadi genagan setinggi 30 – 50 cm. Tujuan penelitian ini untuk mengetahui penyebab banjir, besar debit banjir tahunan dan menghitung parit resapan yang dapat mengurangi genangan banjir tahunan. Jenis penelitian kwantitatip, sampel penelitian lokasi genagan di kampus Unesa Ketintang. Metode pengambilan data 1) survey kondisi saluran,bozem, rumah pompa, lokasi parit, 2) dokumentasi data sekunder, 3) menghitung nilai laju peresapan. Hasil penelitian: 1) saluran drainase berkapasitas 0,470 m3/dt, banyak semak belukar, 2) saluran yang berada di kanan kiri sepanjang jalan berkapasitas 0,312 m3/dt terdapat sedimentasi dan sampah, 3) Debit bangunan Bosem hanya menampung 0,900 m3/dt, 4) rumah pompa yang berkapasitas 0,059 m3/dt banyak rerumputan dan bisa diperluas dan diperdalam, 5) Dua buah pintu pengatur kurang dioperasionalkan, sehingga air Saluran Pembuang Sekunder Wonorejo terjadi aliran balik masuk ke kampus. Total kapasitas pada saat banjir sebesar 1741 m3/dt, kurang efektif. Debit pada masa ulang 5th sebesar Q5 = 2,062 m3/dt, dapat menyebabkan banjir sebesar 0,321 m3/dt bila prasarana yang ada berfungsi. Berdasarkan percobaan jenis tanah dengan koefisien laju rembesan sebesar K = 16, 266 cm/jam atau 0,000467 m/dt.
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