METODE DAKWAH BI AL-LISAN DALAM PROSES DAKWAH PADA MAJELIS TAKLIM NURUN NISA KELURAHAN GEDONG AIR KECAMATAN TANJUNG KARANG BARAT BANDAR LAMPUNG

Dakwah adalah kewajiban bagi setiap muslim yang tujuannya adalah supaya tercapainya kebahagiaan baik di dunia maupun di akhirat kelak nanti. Untuk mewujudkan kerja dakwah, Islam memberikan berbagai macam metode yang dapat digunakan para aktivis dakwah sesuai dengan situasi dan kondisi yang dihadapi dalam proses dakwah, Sejak awal penyampaian pesan-pesan dakwah, melalui Metode dakwah yang paling utama dan baik adalah dengan menggunakan lisan atau ucapan dalam bentuk nasihat yang baik, diskusi dengan cara yang baik. Dalam perkembangan metode dakwah dengan ucapan ini dikenal dengan dakwah bi al- lisan. Dakwah yang menggunakan metode lisan maupun ucapan ini sebenarnya cukup epektif. Mengingat pentingnya metode dakwah dengan menggunakan lisan ini, penulis mengadakan penelitian pada Majelis Ta’lim Nurun-Nisa Kelurahan Gedong Air Kecamatan Tanjung Karang Barat Bandar Lampung. Hasil penelitian penulis pada inti masalah ini adalah; bahwa Proses Metode Dakwah Bi al-Lisan dalam kegiatan dakwah Pada Majelis Ta’lim Nurun- Nisa Kelurahan Gedong Air Bandar Lampung? Adapun tujuan penelitian ini yaitu; untuk menjelaskan bahwa penggunaan Metode Dakwah Bi al-Lisan dalam proses Dakwah pada Majelis Ta’lim Nurun Nisa Kelurahan Gedong Air, bukan hanya menggunakan pidato ataupun ceramah saja yang diterapkan tetapi menggunakan imla’i (cara mengulang materi) dan juga ikrar (mencatat materi yang disampaikan oleh da’i. Populasi dan sampel dalam penelitian ini adalah jama’ah & Da’i yang mengisi kegiatan pada Majelis ta’lim Nurun Nisa Kelurahan Gedong Air. Dengan jumlah 42 orang. Penelitian ini adalah penelitian deskriptif kualitatif yang dilakukan lapangan (field research), dengan menggunakan purposive sampling dalam menentukan jumlah sampel. Sedangkan alat pengumpulan data (APD) dalam penelitian ini menggunakan observasi, Interview, dan Dokumentasi. Setelah data terkumpul di analisis dengan metode indukatif, yaitu cara pengambilan kesimpulan dari hal bersifat khusus padahal yang bersifat umum. Hasil yang didapati dari penelitian ini adalah: 1) para pengurus dan da’i juga berupaya menjadikan dakwah tidak hanya terlaksana pada Majelis Ta’lim saja. Tetapi cara dakwah seperti ini, akan dibawa dalam aktivitas masyarakat di kehidupan sehari-hari

PENGABDIAN MASYARAKAT TERKAIT PENERAPAN TEKNOLOGI IRIGASI OTOMATIS DI LAHAN PERTANIAN MARJINAL DESA WONOPRINGGO PEKALONGAN

Sektor pertanian merupakan mata pencaharian dominan di Desa Wonopringgo, Pekalongan. Tujuan dari pengabdian ini adalah untuk mengetahui dampak implementasi penerapan teknologi irigasi otomatis menggunakan tenaga surya bagi petani di kawasan lahan kritis Desa Wonopringgo Kabupaten Pekalongan. Metode yang digunakan dalam kegiatan pengabdian ini adalah metode pendidikan masyarakat dan difusi IPTEKS melalui kegiatan pemberdayaan masyarakat. Hasil dari kegiatan ini mempresentasikan bahwa pelaksanaan pengabdian menunjukkan bahwa mayoritas (80%) petani merasa puas dan mendapatkan manfaat dari pelaksanaan program ini. Selanjutnya, sebanyak 33% petanin merasa sangat diuntungkan, 60% merasa diuntungkan, dan 7% tidak diuntungkan dari implementasi kegiatan pengabdian ini. Kemudian secara umum, sebesar 93% kegiatan pengembangan alat irigasi otomatis dengan panel tanaga surya ini memberikan dampak sebesar 93% untuk pengembangan kegiatan inovatif dan 7% transfer ilmu pengetahuan bagi petani di Desa Wonopringgo. Kesimpulan dari hasil pengabdian ini adalah dampak implementasi penerapan teknologi irigasi otomatis dinyatakan memberikan dampak besar dan menguntungkan bagi kelompok budidaya Tani Makmur di Desa Wonopringgo. Dampak nyata yang dirasakan oleh petani dari adanya program ini adalah terlaksananya kegiatan yang baru dan kreatif di bidang pertanian yang berorientasi kepada penguatan ilmu pengetahuan dan aplikasi teknologi oleh petani

Pemanfaatan Limbah Botol Plastik Polyethyelene Terephthalate (PET) Sebagai Membran Dan Modifikasinya Untuk Pengolahan Air Dan Pemisahan Gas

Pencemaran lingkungan yang diakibatkan oleh limbah plastik PET menjadi masalah serius berbagai negara di dunia. Penelitian ini bertujuan untuk menghasilkan membran dari limbah prlastik PET untuk pengolahan air dan pemisahan gas. Untuk mendapatkan membran PET dengan kinerja tinggi, membran dimodifikasi dengan penambahan aditif jenis garam anorganik (LiCl) dan jenis polimer (PEG-400) untuk pengolahan air dan dengan pengisi (zeolit-NaY) serta teknik penggabungan (blending) dengan polimer pebax untuk pemisahan gas. Pendekatan komputasi dilakukan juga pada penelitian ini untuk memilih pelarut yang tepat untuk PET. Preparasi membran dilakukan dengan teknik inversi fasa nonsolvent induced phase separation. Berdasarkan hasil perhitungan komputasi dengan metode DFT/B3LYP/def2-SVP dan conductor-like polarizable continuum model, pelarut fenol merupakan pelarut terbaik untuk PET karena memiliki nilai energi solvasi paling rendah (-101,879 Kjmol-1) dan energi ikat paling tinggi (2,4 Kjmol-1) dibanding pelarut organik lainnya. Hasil penelitian menunjukkan membran PET termodifikasi LiCl mampu menjernihkan air dengan kualitas memenuhi standar dari Permenkes Nomor 32 Tahun 2017. Kualitas air tersebut mencapai kekeruhan sebesar 1,42 NTU, 374 ppm untuk TDS, 37 ppm untuk TSS, 2,45 ppm untuk COD, dan 1,24 ppm untuk BOD dari air sungai yang sebelum proses penyaringan dengan membran menunjukkan kekeruhan sebesar 400 NTU, 506 ppm untuk TDS, 793 ppm untuk TSS, 17,05 ppm untuk COD, dan 6,94 ppm untuk BOD. Selain itu, untuk aplikasi pemisahan gas membran PET dengan penambahan Pebax 9% menunjukkan peningkatan permeabilitas pada gas CO2, CH4 dan H2 berturut-turut sebesar 750±0,06, 600±0,21, dan 2500±0,31%. Pada pemisahan CO2/CH4, membran PET-PBX 9% memiliki permeabilitas CO2 tertinggi dengan peningkatan sebesar 21±0,03% dari membran PET tanpa Pebax. Penambahan zeolit-NaY mampu menghasilkan peningkatan permeabilitas gas CO2 sebesar 1044 ± 0,20 % dari membran PET tanpa zeolit. ======================================================================================================================== Environmental pollution caused by PET plastic waste is a serious problem in many countries. This study aims to produce membranes from PET plastic waste for water treatment and gas separation. The PET membrane was modified to obtain high-performance PET membranes by adding inorganic salt (LiCl) and polymer (PEG-400) additives for water treatment and with fillers (zeolite-NaY), as well as blending techniques with pebax polymers for gas separation. This study also used a computational approach to choose the right solvent for PET. Membrane preparation was carried out using the nonsolvent-induced phase separation technique. Based on the results of computational calculations using the DFT/B3LYP/def2-SVP method and the conductor-like polarizable continuum model, phenol solvent is the best solvent for PET because it has the lowest solvation energy value (-101.879 Kjmol-1) and the highest binding energy (2.4 Kjmol-1) compared to other organic solvents. The results showed that the LiCl-modified PET membrane could purify water with a quality that met the standards of Permenkes Number 32 of 2017. The water quality reached turbidity of 1.42 NTU, 374 ppm for TDS, 37 ppm for TSS, 2.45 ppm for COD, and 1.24 ppm for BOD from river water which before the membrane filtering process showed turbidity of 400 NTU, 506 ppm for TDS, 793 ppm for TSS, 17.05 ppm for COD, and 6.94 ppm for BOD. In addition, for gas separation applications, PET membranes with the addition of 9% Pebax showed an increase in permeability to CO2, CH4, and H2 gases, respectively 750 ± 0.06, 600 ± 0.21, and 2500 ± 0.31%. In the CO2/CH4 separation, the 9% PET-PBX membrane had the highest CO2 permeability with an increase of 21 ± 0.03% compared to the PET membrane without Pebax. Zeolite-NaY increased the permeability of CO2 gas by 1044 ± 0.20% compared to the PET membrane without zeolite

Utilization of Nanochitosan as Adsorbent of Mercury (Hg) in Gold Ore Processing Waste

Mercury pollution in gold ore processing wastewater can cause environmental and health problems. A large amount of mercury pollution causes neurological disease, paralysis, loss of sense of taste, irregular speech, and death. One effective method to reduce mercury amount in the environment is adsorption. Adsorption performance is affected by several factors such as surface area of material, deacetylation degree (DD), and adsorption condition, which is indicated by contact time and mercury concentration. Nanochitosan is used in this research. Effect of deacetylation degree (85%; 87%; 95%), contact time (30;60;90;120 minutes), and variation of mercury concentration (5;10;15;20;25;30 ppm) on adsorption performance was investigated in this research. Nanochitosan in this research is characterized by FTIR, SEM-EDX, BET-BJH, and pH PZC. AAS measures adsorption performance in this research. The result shows that nanochitosan, which has the best adsorption performance, is nanochitosan with a deacetylation degree of 95%, at a contact time of 60 minutes, and mercury concentration is 15 ppm

Utilization of drinking water bottle waste as a sustainable and low-cost membrane material in water purification

The rapid development of membrane technology in various applications requires new membrane materials to achieve good separation performance. Materials in great demand are low in cost, easy to prepare, sustainable, and have good separation performance. In addition, consideration of environmental aspects is also crucial in the selection of membrane materials. On the other hand, plastic bottle waste, which increases every year (381.73 million tons), has the property of forming films or thin layers. Therefore, plastic bottle waste as a low-cost, sustainable, and “green” membrane material has great potential. The membrane from PET plastic bottle waste (PET-B membrane) was prepared using the immersion-precipitation phase inversion technique. Modification of the membrane is done by adding LiCl as an additive. Furthermore, the fabricated membranes were tested for their performance in water purification. The results showed that the PET-B membrane had a porosity of 74.8%. The addition of LiCl can increase the porosity of the PET-B membrane to 81.4%. The addition of LiCl caused an increase in flux to 3 times (65.30 Lm-2h-1bar−1 to 171.1 Lm-2h-1bar−1) and an increase in rejection from 64.46% to 99.45%

Solvent selection in membrane preparation from polyethylene terephthalate plastic waste: computational and experimental study

The selection of the solvent during the membrane preparation process significantly affects the characteristics of the resulting membrane. The large number of organic solvents available for dissolving polymers renders this experimental approach ineffective. A computational approach can select a solvent using the solvation energy value approach. In addition, no organic waste is generated from the computational approach, which is a distinct advantage. A computational approach using the DFT/B3LYP/def2-TZVP RIJCOSX method was used to optimize the structure of polyethylene terephthalate (PET). The PET for the experiment was obtained from the utilization of plastic bottle waste. In addition, a review of the thermodynamics, geometry, HOMO-LUMO orbitals, and vibrational frequencies was conducted to validate the PET molecule against the experimental results. A conductor-like polarizable continuum model was used to determine the best solvent for dissolving the PET plastic waste. The results demonstrated that the Fourier Transform Infra-Red and Fourier Transform Raman spectra obtained from computational calculations were not significantly different from the experimental results. Based on a thermodynamic approach, computationally the Gibbs free energy (−724.723), entropy (0.0428), and enthalpy (−724,723 Kjmol ^−1 ) values of the PET dimer molecule are not much different from the experimental values (−601, 0.042, and −488 Kjmol ^−1 ). The computational approach was successful in selecting solvents that can dissolve PET plastic bottle waste. Phenol solvent has the lowest solvation energy value (−101.879 Kjmol ^−1 ) and the highest binding energy (2.4 Kjmol ^−1 ) than other solvents. Computational and experimental results demonstrated that the phenol solvent was able to dissolve PET plastic bottle waste better than the other solvents

Bibliometric Analysis of Waqf Education on Google Scholar from 2019 to 2022 using VOSviewer

Bibliometric analysis using data on the number and authors of scientific publications as well as articles and citations in them aims to measure the outcomes of researchers, institutions, and countries, in order to identify national and international networks and map the development of new (multidisciplinary) fields of science and technology, this is also known as known as Scientometrics. While, VOSviewer is software for analyzing bibliometrics in order to find research novelties that have not yet appeared in the realm of science and knowledge. This study aims to analyze waqf education on Google Scholar from 2019 to 2022. This study aims to analyze the bibliometrics of waqf education on the Google Scholar data research. The research method used is using the publish and perish application to collect reference data for the last four years from 2019 to 2022. Then use the VOSviewer application to analyze the bibliometrics by referring to the results generated from the publish and perish application in the form of *.ris and *.xls files. The research findings show that there were 494 publications during the last four years for the 2019-2022 period in the field of waqf education with a total of 734 citations. As for the number of interconnection relationships between terminology in the existing research, it was found that the strongest number of relationships was term waqf of 356, cash waqf of 114, asset of 96, waqf of fund 75, and manager of 73. While the number of frequencies that frequently appeared was term waqf as much as 252 times, Cash waqf 71 times, asset 55 times, land waqf 41 times, and manager 36 times

Modification of PVDF membrane for harvesting of Nannochloropsis sp. and its cleaning results

One of the biggest challenges in implementing microalgae-based biofuels is the effective harvesting process. Filtration membrane has become one of the flexible methods in microalgae harvesting. This study investigated the harvesting of Nannochloropsis sp. using a modified PVDF membrane at various LiCl as an additive with N-methyl-2-pyrrolidone (NMP) solvent. Harvesting of Nannochloropsis sp. with PVDF membrane has never been reported before. The addition of LiCl can improve the performance of PVDF membrane due to LiCl has a great affinity for water, resulted in inducing the formation of the pore structure of membrane. The optimum membrane composition was determined at various LiCl additive from 1% to 3% (w/w). The hydrophilicity of the membrane increased as indicated by the increasing of water permeance, which were 516, 546, 660, and 614 l m ^−2 h ^−1 bar ^−1 for neat PVDF, PVDF/LiCl-1, PVDF/LiCl-2, and PVDF/LiCl-3 membrane, respectively. PVDF/LiCl-2 membrane showed the highest water permeance and the highest total average permeance (150 l m ^−2 h ^−1 bar ^−1 ) with 100% rejection of Nannochloropsis sp. harvesting. The membranes was cleaned using sodium hypochlorite, citric acid, and nitric acid. The SEM results showed that the membrane after cleaning appears the algae particles in the membrane pore. Furthermore, algae particles were almost not visible on cleaned membrane. The FTIR results showed an absorption at 3401 cm ^−1 , which was a characteristic of the hydrogen N–H bond, also including a typical amide uptake (C=O) at 1648 cm ^−1 indicating protein appearance. Moreover, the cleaned membrane did not appear any absorption that indicates the foulant