Value-Added Products Derived from Waste Activated Sludge: A Biorefinery Perspective

Zhang, Wei; Alvarez-Gaitan, Juan Pablo; Dastyar, Wafa; Saint, Christopher P.; Zhao, Ming; Short, Michael D.

doi:10.3390/w10050545

Cited by 50 publications

(19 citation statements)

References 135 publications

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“…• Keseimbangan aliran dan komposisi, syarat utama untuk pelaksanaan proses biologi lanjutan secara efisien karena pembuangan air limbah sangat bervariasi berkaitan dengan volume, kekuatan, suhu, pH, dan tingkat gizi. [24]. Lumpur pengolahan susu jarang mengandung bakteri patogen yang sama seperti lumpur domestik [24] dan memiliki konsentrasi logam berat yang jauh lebih rendah dari lumpur domestik [26].…”

Section: Penanganan Limbah Cair Industri Susuunclassified

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Teknologi Penanganan Limbah Cair Industri Pengolahan Susu Sapi Secara Biologis: Artikel Review

Rohmanna

Azizah²,

Hidayat³

2021

Biotropika

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Industri susu merupakan salah satu industri penghasil limbah cair yang cukup besar. Pengolahan produk susu untuk setiap produk yang berbeda menghasilkan limbah cair dengan karakteristik yang berbeda pula dan berdampak pada lingkungan. Hal tersebut membutuhkan perhatian lebih terkait penanganan limbah cair yang sesuai. Tujuan dari naskah ini adalah untuk meninjau tentang teknologi penanganan limbah cair industri pengolahan susu secara biologis dari berbagai penelitian yang telah ada. Sumber dan karakteristik limbah cair industri pengolahan susu, opsi penanganan dan teknologi pengolahannya dideskripsikan. Penanganan secara biologis berupa penanganan aerobik dan anaerobik merupakan teknologi penanganan yang umum dilakukan pada limbah cair industri pengolahan susu dengan kelebihan dan kelemahan masing-masing dijelaskan secara detail. Berdasarkan pendekatan tersebut, pengolahan limbah cair pada industri susu lebih efektif dengan metode anaerob.

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Section: Penanganan Limbah Cair Industri Susuunclassified

“…[24]. Lumpur pengolahan susu jarang mengandung bakteri patogen yang sama seperti lumpur domestik [24] dan memiliki konsentrasi logam berat yang jauh lebih rendah dari lumpur domestik [26].…”

Section: Penanganan Limbah Cair Industri Susuunclassified

Teknologi Penanganan Limbah Cair Industri Pengolahan Susu Sapi Secara Biologis: Artikel Review

Rohmanna

Azizah²,

Hidayat³

2021

Biotropika

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“…Bioplastics do have the challenges of the primary feedstocks, water footprint, land use, and limited infrastructure. However, the utilization of by-products and waste flows as raw materials by integrating production in a biorefinery would drastically reduce the ecological footprint [67,[96][97][98][99]. Recent studies have shown that wood and other lignocellulosic residues from agroforestry would be more sustainable alternatives due to their polysaccharides and lignin [95,100].…”

Section: Opportunities For Bioplasticsmentioning

confidence: 99%

Preventing Petrochemical Plastics Pollution: Sustainable Material Alternatives

Singh¹,

Ogunseitan²,

Tang³

et al. 2021

Preprint

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Achievement of some of the United Nation’s Sustainable Development Goals will not be possible if global trends in pollution associated with petrochemical-based plastics continue. Alternatives to petrochemical plastics have been researched intensely, but they have not been developed to replace current plastic products in a commercially viable way. The demand for single-use plastic personal protective equipment created by the COVID-19 pandemic has stimulated urgency in developing pollution prevention strategies that transcend reliance on highly variable consumer behavior. Biological material plastics are potentially sustainable because their manufacture utilizes renewable resources, and they are biodegradable. In this paper, challenges facing the sustainable management of discarded single-use petrochemical plastics are discussed, and a material lifecycle perspective is proposed that would be integrated into a circular economy of biological plastics. Preventing petrochemical plastics pollution requires a shift to fossil-free feedstock and energy and the design of biopolymers with desired properties. In this work, strategies for improving the performance and recyclability of biological plastics by designing polymers with diversified functionalities are presented.

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“…Generally, sludges contain water, organic and mineral substances, and various microbial strains. Interestingly, sludges can be used in various fileds (as fertilizer in agriculture, to produce bricks for buildings, as growth media for industrial microbial growth, etc) (Ben Rebah et al 2001, Zhang et al 2018). In sludge, microorganisms produce extracellular polymeric substances and as reported above, these polymers consist mainly of polysaccharides, proteins and nucleic acids.…”

Section: Wastewater Sludgementioning

confidence: 99%

Agro-industrial waste materials and wastewater as growth media for microbial bioflocculants production: a review

Siddeeg

Tahoon

Rebah

2019

Mater. Res. Express

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Various microbial strains (bacteria, fungi, and microalgae) produced polymers variable in composition (protein, cellulose, polysaccharide, etc) with interesting flocculation properties such as the ability to remove large spectrum of pollutants (organic and inorganic materials, etc) from wastewater and the stability over a wide range of temperature, pHs and salt concentrations. These bioflocculants have been characterized and successfully tested in wastewater treatment and sludge dewatering. The production of microbial bioflocculants involves the culture step of the bioflocculant-producing microorganism in an appropriate medium, followed by polymer extraction. The production processing is mostly controlled by the microbial growth medium cost. Agro-industrial wastes including agricultural by-products (rice hull, rice stover potato by-products, peanut hull, corn cob, wheat bran, etc), sugar processing wastes and fermentation liquors contain nutrients such as nitrogen and carbon, which can sustain the microbial growth and bioflocculant production. Recently, the potential use of wastewater and sludge as growth media for various bioflocculant-producing microorganisms has been demonstrated. Interestingly, waste pre-treatments may be essential to enhance the microbial growth and the bioflocculant production. Bioflocculant properties (polymer yield, polymer composition, flocculating activity, etc) are controlled by the growth conditions. Moreover, the produced materials showed acceptable results for wastewater treatment and sludge dewatering. This new strategy reported in this review can decrease to some extent the environmental problems related to the disposal of agro-industrial wastes and wastewater sludges. At the same time, this could reduce the cost of microbial bioflocculant production.

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Value-Added Products Derived from Waste Activated Sludge: A Biorefinery Perspective

Cited by 50 publications

References 135 publications

Teknologi Penanganan Limbah Cair Industri Pengolahan Susu Sapi Secara Biologis: Artikel Review

Teknologi Penanganan Limbah Cair Industri Pengolahan Susu Sapi Secara Biologis: Artikel Review

Preventing Petrochemical Plastics Pollution: Sustainable Material Alternatives

Agro-industrial waste materials and wastewater as growth media for microbial bioflocculants production: a review

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