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All Journal Jurnal EnviScience (Environment Science) Jumat Pertanian: Jurnal Pengabdian Masyarakat
Lestari , Dwi Indah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Engineering Public Health Other

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Sintesis dan Evaluasi Adsorpsi Batch Cr(VI) Menggunakan Karbon Aktif Jerami Padi Teraktivasi Asam Sulfat Daning Kinanti Sutama; Lestari , Dwi Indah; Rahmat, Vitro; Raudhatussya'rifah, Ra'ida; Diningrum, Dipta Ardiya
Jurnal EnviScience (Environment Science) Vol. 10 No. 1 (2026): Environmental Health: Multidisciplinary Approaches to Improving Air, Water, an
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/jev.v10i1.971

Abstract

Jerami padi merupakan residu pertanian yang melimpah dan berpotensi dikembangkan sebagai prekursor karbon aktif untuk pengolahan limbah cair yang mengandung logam berat. Penelitian ini bertujuan untuk mensintesis dan mengevaluasi kinerja karbon aktif jerami padi teraktivasi asam sulfat (H₂SO₄) dalam menyisihkan kromium heksavalen (Cr(VI)) dari larutan sintetik. Karbon aktif disintesis melalui karbonisasi pada suhu 500 °C selama 2 jam dan aktivasi kimia menggunakan H₂SO₄ 2 M dengan rasio impregnasi 1:10 (b/v). Pengujian adsorpsi dilakukan secara batch dengan variasi pH (5–9), ukuran partikel (60–100 mesh), dan waktu kontak (0–120 menit) untuk menentukan kondisi optimum. Kondisi optimum diperoleh pada pH 7, ukuran partikel 100 mesh, dan waktu kontak 60 menit. Data kesetimbangan lebih sesuai dengan model isoterm Langmuir (R² = 0,8923) dengan kapasitas adsorpsi maksimum (qₘ) sebesar 5,42 mg/g dan konstanta Langmuir (KL) sebesar 2,40 L/mg, yang mengindikasikan mekanisme adsorpsi monolapis dengan afinitas interaksi yang cukup kuat. Hasil ini menunjukkan bahwa karbon aktif jerami padi teraktivasi H₂SO₄ berpotensi sebagai adsorben alternatif yang ekonomis dan ramah lingkungan untuk pengolahan limbah cair yang mengandung Cr(VI).
Pemanfaatan Photosynthetic Bacteria sebagai Biofertilizer di Desa Bakalan Yuliana, Anggi Indah; Shobirin, Mochammad Syafiuddin; Gangsar, Azhar Irfana; Lestari , Dwi Indah; Safitri, Safitri
Jumat Pertanian: Jurnal Pengabdian Masyarakat Vol. 7 No. 1 (2026): April
Publisher : LPPM Universitas KH. A. Wahab Hasbullah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32764/abdimasper.v7i1.6291

Abstract

This study aims to enhance farmers’ understanding and skills in utilizing organic fertilizer based on Photosynthetic Bacteria (PSB) in Bakalan Village, Sumobito District, Jombang Regency. This community service program was implemented through outreach and training activities, focusing on the introduction and practice of PSB fertilizer production as an alternative to the currently dominant chemical fertilizers. The methods applied included face-to-face approaches, participatory discussions, and direct demonstrations of PSB production techniques using locally available materials. The results indicated a positive response from the participants. Most of them showed improved knowledge about the benefits of PSB fertilizer and developed practical skills in its production process. In addition, they gained a better understanding of the importance of using environmentally friendly organic fertilizers to support sustainable agriculture. Evaluation findings revealed a high level of acceptance toward this innovation. Nevertheless, challenges remain, particularly the farmers’ tendency to prefer chemical fertilizers due to their practicality and the limited availability of raw materials in larger quantities. Overall, this activity demonstrates great potential in promoting sustainable agriculture while raising public awareness of the importance of innovations based on local wisdom. The utilization of PSB as an organic fertilizer is expected not only to support increased agricultural productivity but also to improve environmental quality and reduce dependence on chemical fertilizers.
Co-Authors Anggi Indah Yuliana Daning Kinanti Sutama Diningrum, Dipta Ardiya Gangsar, Azhar Irfana Rahmat, Vitro Raudhatussya'rifah, Ra'ida Safitri Safitri