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All Journal CHEESA: Chemical Engineering Research Articles Ma'mal: Jurnal Laboratorium Syariah dan Hukum Jurnal Pengbdian Teknik Mesin
Azzahra, Tsania Putri
Unknown Affiliation
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering

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Optimization of Particle Size and Addition of Vinasse Waste to Improve Characteristics of Rice Husk Charcoal Briquettes Santi, Sintha Soraya; Azzahra, Tsania Putri; Salfana, Dian Rizka; Pasang, Timotius
CHEESA: Chemical Engineering Research Articles Vol. 7 No. 1 (2024)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v7i1.19575.36-46

Abstract

Biobriquettes are a biomass fuel with high calorific value. This study aims to determine the optimal conditions for the particle size of husk charcoal and the addition of vinasse waste as an independent variable, using the Response Surface Methodology and the Central Composite Design (CCD) method on Design Expert 13 software. The sample mixed with tapioca starch (8:1), which acts as an adhesive, and add vinasse waste in 3, 6, 9, and 12 mL amounts. Carbonization process, which is then mashed and sieved according to particle sizes of 20, 30, 40, 50, and 60 mesh. Then, the sample is mixed with tapioca starch as adhesive with the ratio of charcoal and adhesive 8:1 as well as vinasse waste in volumes of 3, 6, 9, and 12 mL. The resulting briquette samples were tested in the form of water content, ash content, and calorific value tests. The optimum conditions that have a significant effect on the response variable are the combination of particle size variables of 35.152 mesh and the volume of vinasse waste of 6.049 mL. The moisture content obtained was 6.696%., The ash content was 5.450%, and the calorific value was 5003.399 cal/g with a desirability value of 0.927 in the quadratic model.
Pembuatan Biopestisida dari Campuran Kulit Bawang Merah dan Kulit Bawang Putih Sebagai Produk Unggulan di Kelurahan Urangagung Azzahra, Tsania Putri
abdimesin Vol. 5 No. 1 (2025): Abdi-mesin
Publisher : UPN "Veteran" Jawa Timur

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Abstract

Biopestisida atau pestisida nabati merupakan bahan yang dapat mengontrol hama pada tanaman yang terbuat dari ekstrak bahan alam yang tidak dapat meracuni tanaman maupun lingkungan. Bahan alam yang dapat digunakan sebagai bahan pembuatan biopestisida yang memiliki kandungan berupa zat tannin, alkaloid, sulfur, flavonoid, dan saponin karena kandungan tersebut berfungsi sebagai antimikroba, antivirus, dan antijamur. Kulit baawang merah dan kulit bawang putih merupakan bahan dengan kandungan yang bersifat insektisida sehingga mampu untuk menolak kehadiran serangga. Mayoritas warga Kelurahan Urangagung berprofesi sebagai petani yang masih menggunakan pestisida kimia atau pestisida sintesis sebagai cairan penghilang hama. Penggunaan pestisida kimia menjadi permasalahan bagi para petani di Kelurahan Urangagung karena pestisida kimia dapat mematikan seluruh hewan di sekitar tanaman termasuk hewan pembantu penyerbukan dan menghasilkan residu yang tidak ramah lingkungan. Salah satu alternatif yang dapat dilakukan yaitu menggunakan pestisida nabati atau biopestisida sebagai pengganti pestisida kimia. Kegiatan KKN yang kami lakukan berupa sosialisasi terkait pembuatan biopestisida dari campuran kulit bawang merah dan kulit bawang putih yang dihadiri oleh Kepala Kelurahan Urangagung serta kelompok tani Urangagung.
Transformation of Customary Law Community Structure in Internal and External Dynamics from the Perspective of Islamic Law Azzahra, Tsania Putri; Ridwansyah, Moh. Haikal; Santoso, Zaidan Ramadhan; Ilmania, Nurika Falah; Ali, Salih Awadh
Ma’mal: Jurnal Laboratorium Syariah dan Hukum Vol. 6 No. 5 (2025): October
Publisher : Laboratorium Fakultas Syariah dan Hukum UIN Sunan Ampel Surabaya (https://uinsa.ac.id/fsh/facility)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15642/mal.v6i5.450

Abstract

The structure of customary law societies is a fundamental element in the traditional social system that governs the lives of local communities in Indonesia. This research aims to analyze how the structure undergoes transformation due to internal dynamics as well as external pressures derived from the penetration of state laws, development programs, globalization, and economic investment. This research is normative research using a literature study and document analysis approach. The data collected on indigenous peoples in Indonesia are analyzed deductively with Islamic legal theory. This study found that the structure of indigenous peoples is not static but adaptive, undergoing complex changes. External intervention often weakens indigenous authorities, causes agrarian conflicts, and triggers disharmony between traditional values and the demands of modernity. However, indigenous peoples also show resilience through institutional revitalization, strengthening cultural identity, and efforts to gain legal recognition. From the perspective of Islamic law, customs that do not contradict the sharia are legitimate under the principles of 'urf and the rules of al-'ādah muḥakkamah. The analysis of maqāṣid al-syarī'ah shows that the protection of property, the soul, the intellect, and descendants must serve as the basis for assessing changes in the customary structure. Therefore, harmonization between customary law, Islamic law, and national law is essential to realize an inclusive and equitable legal system.
Co-Authors Ali, Salih Awadh Pasang, Timotius Ridwansyah, Moh. Haikal Salfana, Dian Rizka Santi, Sintha Soraya Santoso, Zaidan Ramadhan