Studi Pemanfaatan Lumpur Kering Dari Drying Area IPLT Betoyoguci Sebagai Pengganti Pupuk Untuk Tanaman Nonproduktif

Nabiilah, Ghinaa Audy Saarah (2025) Studi Pemanfaatan Lumpur Kering Dari Drying Area IPLT Betoyoguci Sebagai Pengganti Pupuk Untuk Tanaman Nonproduktif. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Lumpur kering yang dihasilkan drying area Instalasi Pengolahan Lumpur Tinja (IPLT) Betoyoguci di Kabupaten Gresik memiliki potensi untuk dimanfaatkan sebagai pengganti pupuk. Namun, hingga kini belum ada studi yang dilakukan untuk mendukung peningkatan nilai guna lumpur tersebut sebagai pengganti pupuk. Penelitian ini bertujuan untuk menentukan karakteristik lumpur kering dari drying area IPLT Betoyoguci serta untuk melihat perubahan fisik tanaman setelah diberi lumpur kering sebagai pengganti pupuk.
Penelitian berskala laboratorium dengan sampel lumpur kering yang diambil dari drying area IPLT Betoyoguci. Parameter yang diamati meliputi C-Organik, rasio C/N, kadar air, pH, hara makro (N, P₂O₅, K₂O), hara mikro (Fe, Zn), logam berat (As, Hg, Pb, Cd, Ni, Cr), cemaran mikroba, serta perubahan fisik tanaman berupa perubahan panjang tanaman, pertambahan jumlah daun baru, berat kering, dan berat basah. Variasi perlakuan meliputi rasio campuran lumpur kering dengan tanah (1:1, 2:1, dan 3:1) dan jenis tanaman yang digunakan (Tradescantia spathacea, Tradescantia pallida, dan Tradescantia zebrina). Penelitian dilakukan selama 36 hari setelah tanam (HST) untuk mengamati perubahan fisik tanaman.
Hasil menunjukkan beberapa parameter melebihi ambang batas standar mutu, yaitu kadar air, bahan ikutan, dan cemaran E. coli. Secara umum, pemberian lumpur kering menunjukkan respons positif terhadap perubahan fisik tanaman. Pada tanaman adam hawa perlakuan kontrol lumpur kering (AL) menghasilkan pertumbuhan paling besar dengan pertambahan tinggi 2,7 cm, pertambahan daun 42 helai, berat basah 146,80 gram, dan berat kering 12,01 gram. Pada tanaman hati ungu perlakuan kontrol lumpur kering (HL) menghasilkan pertumbuhan paling besar dengan pertambahan tinggi 23,5 cm, pertambahan daun 35 helai, berat basah 140,45 gram, dan berat kering 11,35 gram. Sedangkan pada tanaman rumput belang, pertumbuhan paling besar terjadi pada penambahan lumpur dengan rasio 2:1 (R2) dengan pertambahan tinggi 8 cm, pertambahan daun 22 helai, berat basah 12,70 gram, dan berat kering 1,29 gram. Hal ini menunjukkan bahwa lumpur kering yang digunakan dalam kondisi langsung tanpa pengolahan, memiliki kandungan hara yang seimbang. Secara umum, semakin besar rasio lumpur yang digunakan, maka semakin besar pertumbuhan tanaman yang dihasilkan.
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The dried sludge produced by the drying area of the Betoyoguci Sludge Treatment Plant (IPLT) in Gresik Regency has the potential to be utilized as a fertilizer substitute. However, to date, no studies have been conducted to support the enhancement of the sludge’s value as a fertilizer substitute. This study aims to determine the characteristics of the dried sludge from the IPLT Betoyoguci drying area and to observe the physical changes in plants after the application of the dried sludge as a fertilizer substitute.
The research was conducted on a laboratory scale using dry sludge samples that were taken from the drying area of IPLT Betoyoguci. The observed parameters include organic carbon (C-Organic), C/N ratio, moisture content, pH, macronutrients (N, P₂O₅, K₂O), micronutrients (Fe, Zn), heavy metals (As, Hg, Pb, Cd, Ni, Cr), microbial contamination, and physical changes in plants such as plant length changes, the number of new leaf nodes, dry weight, and fresh weight. The treatments involved variations in the ratio of dry sludge to soil mixtures (1:1, 2:1, and 3:1) and different plants (Tradescantia spathacea, Tradescantia pallida, and Tradescantia zebrina). The study conducted over 36 days of planting (HST) to observe physical changes in plants.
The results showed that several parameters exceeded the quality standard limits, namely moisture content, impurities, and E. coli contamination. In general, the application of dry sludge gave a positive response to the physical growth of plants. In adam hawa plants, the control treatment with dry sludge (AL) resulted in the highest growth, with an increase in height of 2,7 cm, 42 new leaves, a fresh weight of 146,80 grams, and a dry weight of 12,01 grams. In hati ungu plants, the control treatment with dry sludge (HL) also showed the best growth, with a height increase of 23,5 cm, 35 new leaves, a fresh weight of 140,45 grams, and a dry weight of 11,35 grams. Meanwhile, for rumput belang, the highest growth was obtained in the treatment with a sludge-to-soil ratio of 2:1 (R2), with an increase in height of 8 cm, 22 new leaves, a fresh weight of 12,70 grams, and a dry weight of 1,29 grams. These findings suggest that dry sludge applied directly without further processing contains a balanced nutrient composition. In general, a higher proportion of sludge in the growing medium resulted in greater plant growth.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	lumpur tinja, lumpur kering, pupuk, dry sludge, fertilizer, septage sludge
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD195.S47 Sewage disposal plants--Environmental aspects T Technology > TD Environmental technology. Sanitary engineering > TD767.7 Sewage sludge treatment and disposal T Technology > TD Environmental technology. Sanitary engineering > TD794.5 Recycling (Waste, etc.)
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25201-(S1) Undergraduate Thesis
Depositing User:	Ghinaa Audy Saarah Nabiilah
Date Deposited:	24 Jul 2025 04:21
Last Modified:	24 Jul 2025 04:21
URI:	http://repository.its.ac.id/id/eprint/121093

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