Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Jurnal Teknik Kimia dan Lingkungan JURNAL REKAYASA KIMIA & LINGKUNGAN
Lestari, Rizka
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Environmental Impact Evaluation of Tofu Production using Life Cycle Assessment Lestari, Rizka; Rahmawati, Dian; Binti Ibrahim, Khairul Nadiah
Jurnal Teknik Kimia dan Lingkungan Vol. 8 No. 1 (2024): April 2024
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtkl.v8i1.5069

Abstract

Tofu is one of the products made from soybeans that a sizable portion of people in a larger society consume. There are several ways to make tofu, from conventional to modern. The conventional tofu production process generates a lot of waste. Many of the researchers have explored numerous strategies to handle tofu waste in a way that minimizes its harmful influence on the environment. However, in many cases, the environmental impact is simply transferred from one process to another during the treatment of tofu waste. As a result, the whole tofu-making process requires an evaluation of the effects. Among these approaches is life cycle assessment (LCA). The study discovered that energy use was the primary factor leading to environmental impacts. Burning firewood for energy resulted in 55.61 kg of carbon dioxide equivalent. The emission value has been reduced to 32 kg CO₂ eq and 28 kg CO₂ eq, respectively, according to the findings of simulations by utilizing biogas and natural gas as fuels.
Microalgae as A Bioremediation Agent for Palm Oil Mill Effluent: Production of Biomass and High Added Value Compounds Putri, Nita Ariestiana; Dewi, Resti Nurmala; Lestari, Rizka; Yuniar, Rizka Ayu; Ma'arif, Luluk Majidah; Erianto, Ricky
Jurnal Rekayasa Kimia & Lingkungan Vol 18, No 2 (2023): Jurnal Rekayasa Kimia & Lingkungan (December, 2023 )
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v18i2.34018

Abstract

Palm oil mill effluent (POME) is high strength wastewater obtained from palm fruit processing, which contains high chemical oxygen demand (COD), biological oxygen demand (BOD), and other contaminants. The pollutant load in POME can serve as a source of nutrients for microalgae growth. As a result, the goal of this work was to utilize Spirulina sp. and Nannochloropsis oculata to reduce the nutritional content of POME while producing biomass rich in high-value chemicals. The cultivation was conducted in a batch reactor using various POME fractions (0-20%) under 5,000 lux light intensity and continuous aeration at a temperature of 22-28C and a salinity of 30 ppt for 14 consecutive-days. The results demonstrate that Spirulina sp. produced the most biomass at 15% POME, accounting for 4.670.95 g/L with 0.570.11 1/day of growth rate and 3.33% of COD reduction efficiency. Meanwhile, Nannochloropsis oculata thrived in 20% POME, producing 4.430.36 g/L biomass, 1.180.31 1/day growth rate, and 14.43% COD reduction efficiency. In the proximate analysis. Spirulina sp. and Nannochlorpsis oculata provided 0.87%; 1.11% lipid and 1.03%; 0.86% protein, respectively.
Co-Authors Binti Ibrahim, Khairul Nadiah Dian Rahmawati Erianto, Ricky Ma'arif, Luluk Majidah Nita Ariestiana Putri Resti Nurmala Dewi Rizka Ayu Yuniar